HP 7414A Operating And Service Manual

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OPERATING

AND

SERVICE

MANUAL

THERMAL-TIP

RECORDER

7414A

HEWLETT

i:I

PACKARD

r r

,

(

",MANUAL

CHANGES

MODEL 7414A

THERMAL-TIP

RECORDER

(MANUAL

TITLE)

MANUALSERIA LS PRE FI

XED

_----"1"-"1'-'4""'5~A~

_

MANUAL

PRINTED

MARCH,

1972

MAKE

ALL

CHANGESINTHIS

MANUAL

ACCORDINGTOTHE

ERRATA

BELOW.

ALSO

CHECK

THE

FOLLOWING

TABLE

FOR

YOUR

INSTRUMENT

SERIAL

PREFIX

(FIRST

THREE

DIGITSOFAN

EIGHT

DIGIT

SERIAL

NUMBER)

AND

MAKE

ANY

LISTED

CHANGE(S)INTHE

MANUAL.

SERIAL

PREFIX

MAKE

MANUAL

CHANGES

SERIAL

PREFIX

MAKE

MANUAL

CHANGES

ALL

INSTRUMENTS

ERRATA

1

?O?A

f"'l-lANr.E

1

1207A

CHANGE

2

ERRATA

Page

5-4,

Paragraph

5-15,

Step

g:

Page

5-5,

D,

3,

Step

c:

Page

5-10,

Step

a (4):

Page

5-23,

Paragraph

5-47,

Step

g:

Page

5-25,

Figure

5-14:

Page

6-6,

Table

6-1:

Page

6-12,

Table

6-1:

Page

6-14,

Table

6-1:

Page

6-16,

Table

6-1:

Change

reference

to

Paragraph

5-57

to

Paragraph

5-59.

Change

Figure

6-15

reference

to

Figure

5-4.

Should

read"...

by

levering

from

front

of

top

bar

...

"

Change

step

to

read

"Remove

snap

ring

holding

sprocket

to

drive

roller

shaft

using

snap

ring

pliers.

"

C-ring

0510-1017

shown

has

been

changedtosnap-ring

0510-1012,

which

must

be

removed

with

snap-ring

pliers.

Add

on

A3MP1,

7124-1605,

Label

59-61

(Hz).

Change

A3J6,

receptacle

to

1251-2995,

and

A3J5to9100-3198.

Change

A9T1to07754-60470.

After

A10MP5,

add

attaching

part

0510-1012;

Ring,

retaining.

A10A1MP26

was

changedinerror;

see

Change

1.

AddtoOption

008,

7124-1604,

Label

49-51

(Hz).

March,

1972

DATE

PUB.

100-1

07414-91999

MANUAL

PART

NUMBER

A

SUPPLEMENT

CHANGE

1:

CHANGE 2:

MANUAL CHANGES,

MODEL

7414A

(Cont'd)

Page

6-14,

Table

6-1:

On

A10A1MP26,

Add

07754-00880

Spring,

Solenoid

Adjustment;

Delete

(1)

07754-00840

Spacer

and

(3)

07754-00860

Shim.

Page

6-13,

Table

6-1:

Delete

A10W1,

Cable,

interlock.

Page

6-27,

Figure

6-12:

Delete

INTERLOCK

ASSEMBLYatbottom

center

of

schematic;

Substituteablack

jumper

across

the

pins

on

the

Transfer

Board

A3A1.

r

I I

I

1,

J

0-18937-4 0-18930-6

March,

1972

- 2 -

A

)

I

)

1

t

I

,

I

(

~MANUAL

CHANGES

MODEL

7414A

THERMAL-TIP

RECORDER

(MANUAL

TITLE)

MANUALSERIA LS PR EFI

XED

-=1=1c...:.

4

.L.5.:..:A:....-

_

MANUAL

PRINTED

MARCH,

1972

MAKE

ALL

CHANGESINTHIS

MANUAL

ACCORDING

TO

THE

ERRATA

BELOW.

ALSO

CHECK

THE

FOLLOWING

TABLE

FOR

YOUR

INSTRUMENT

SERIAL

PREFIX

(FIRST

THREE

DIGITSOFAN

EIGHT

DIGIT

SERIAL

NUMBER)

AND

MAKE

ANY

LISTED

CHANGE

IS)INTHE

MANUAL.

SERIAL

PREFIX

ALL

INSTRUMENTS

!'.!.

NEW OR

REVISED

ITEM

.6

ERRATA

MAKE

MANUAL

CHANGES

ERRATA

SERIAL

PREFIX

MAKE

MANUAL

CHANGES

Page

5-22,

Figure

5-12:

On

Speed

Control

Connections,

Pin3connects

to

ORANGE

wire

and

Pin4connects

to

YELLOW

wire.

Page

5-28,

Figure

5-18:

In

lower

right

corner,

specification

for

SHAFT

END

PLAY

of

gearbox

should

be

0.007

inch

(0.018

rmn).

April,

1972

DATE

PUB.

100-1

07414-91999

MANUAL

PART

NUMBER

B

SUPPLEMENT

I I

I

I I I I

I

1

)

07414·1

HEWLETT

~

PACKARD

MODEL

7414A

THERMAL-TIP RECORDER

SERIALS

PREFIXED:

1145A

This manual applies directly to

HP

Model 7414A Thermal Tip Recorders having serial numbers prefIxed 1145A.

OTHER

PREFIXES:

For instruments having prefixes lower than 1145A, refer to Appendix

I, Backdating Supplement. For

higher prefixes,

see

the manual change sheets pro-

vided.

OPERATING

AND

SERVICE

MANUAL

0741

4-91999

Copright

1972 Hewlett-Packard Medical

Electronics

Division

175

Wyman

Street

Waltham,

Massachusetts

02154

PRINTED, MARCH 1972

/

TableofContents

TABLE OF CONTENTS

Model 7414A

Paragraph

Page

Paragraph

Page

SECTIONI,GENERAL

INFORMATION

1-1

4-35.

Paper Feed

4-9

I-I.

Introduction

1-1

4-37. Recorder Power Supply and

1-3.

Four-Channel Recorder

1-1

Regulator Circuits

4-9

1-9.

Applications and Specifications

1-1

4-39.

Recorder

DC

Power Supplies 4-9

1-13. Accessories

1-1

4-41.

Regulator/Oscillator

.4-11

4-49.

Marker Circuits

.4-11

SECTION

II,

INSTALLATION

2-1

4-54.

440HzOscillator

.4-12

2-1.

Initial Inspection

2-1

4-57.

2400

Hz

Oscillator

.4-12

2-3. Mechanical Check

2-1

2-5. Performance Tests

2-1

SECTIONV,MAINTENANCE

5-1

2-7. Damage Claims

2-1

5-1. Introduction

5-1

2-9.

Storage

2-1

5-3.

Test Equipment and Lubricants

5-1

l"

2-11. Installation

2-1

5-5.

Performance Checks

5-1

2-13. Preamplifier Installation

2-1

5-8.

Variable Line Voltage

5-2

2-15. Power Connections

2-1

5-10. Preventive Maintenance

5-2

2-18 Signal Connections

2-1

5-12.

Operational Checks and Inspection

5-2

2-22. Tape System Connections 2-2 5-16.

Cleaning

5-9

2-24. Remote Control and Marker Connections 2-2 5-18.

Lubrication

5-9

5-20. Electrical Checks

.5-10

SECTION

III,

OPERATION

3-1

5-22. Adjustments and Minor Repairs

.5-10

3-1. Introduction

3-1

5-24.

Paper Drive Adjustments

.5-10

3-3.

Control Locations

3-1

5-29.

Stylus Adjustments

.5-12

3-5. System Operation

3-1

5-38. Corrective Maintenance

. 5-18

5-40.

Galvanometer Removal

SECTION

IV,

PRINCIPLES OF OPERATION

4-1

and Replacement

.5-19

4-1.

Introduction

4-1

5-43. Drive Unit Removal and Replacement

. 5-21

4-4.

Preamplifier Power Supply Circuits

4-1

5-46.

Paper Table Disassembly for Drive

4-7. Recorder Signal Circuits

4-1

Roller Replacement

.5-23

4-11.

Stylus Linkage

4-1

5-48. Gearbox Removal and Overhaul

.5-23

4-13.

Galvanometer Position Feedback

4-1

5-55.

Solenoid Adjustment

.5-34

4-17.

Galvanometer Damping 4-2 5-58.

Marker Assembly Maintenance

·5-34

I

4-20.

Heat Control Circuit 4-2

4-22.

Power Control Circuits 4-2

SECTION

VI,

RECPLACEABLE PARTS

6-1

4-26. Chart Drive

4-7

6-1.

Introduction

6-1

4-28. Chart Motor

4-7

6-4.

Reference Designations

6-1

4-30. Speed Control

4-7

6-9.

Ordering Information 6-2

LIST OF ILLUSTRATIONS

Figure

Page

Figure

Page

I-I.

Model 7414A Recording System

2-5.

Tape System Connections Using Control

and Optional Configurations 1-0

Sections 4681A and 4682A 2-6

1-2. 8800 Series Preamplifiers

1-3

2-6. Remote Control and Marker Connections

2-7

2-7.

Option 001 Rack Mounting Kit

2-8

2-1.

Recorder Access for Receiving Inspection

2-2

2-2.

Recorder Rear Panel Connections and Fuse

3-1. 7414A Recording System, Control

Locations.

2-3

Locations 3-2

2-3. Recorder and Mobile Cart Power

3-2. Paper Loading Procedure 3-3

Connections 2-4

2-4.

7414A System

Input

Cable Preparation 2-5

4-1.

Model 7754A Recorder, Block Diagram

4-0

07414-1

Model

7414A

TableofContents

LIST OF ILLUSTRATIONS

(continued)

Figure

Page

Figure

Page

.6-22

.6-23 .6-24

.6-25

.5-32

.5-33

. 5-33

. 5-34

. 6-3

Model 7754A Recorder

(End

Itern)

Unit Housing

Al

(07754-60270), Parts

Location Diagram

.....

. 6-19

Control Panel A2

(07754-60240)

Subassemblies,

Parts Location Diagram . 6-19

Control Panel A2 Schematic Diagram . 6-20

6-4.

6-1. 6-2.

6-3.

5-22. Overriding Clutch Lubrication

(Secondary Shaft)

5-23. Gearbox Shaft

End

Play Adjustment

5-24. Gearbox

Input

Chain Tension

Adjustment

.....

5-25. Marker Assembly Adjustment and

Removal .

6-5. Control Switch Board A2A 1 (07754-60120),

Component Location

Diagram.

. . . . 6-21

6-6. Heat

Potentiometer

Board A2A2 (07754-60130),

Component

Location Diagram .

..

. 6-21

6-7. Preamplifier Power Supply Board A2A3

(07754-60140)

Component

Location

6-8. Power Supply A3 (07754-60050)

Subassemblies, Attachments 6-9. Power Supply A3, Parts Location Diagram 6-10. Power Supply A3, Schematic Diagram

(Less A3A1) . 6-11. Transfer Board

A3Al

(07754-60150),

Component

Location Diagram

...

6-26

6-12. Transfer Board

A3Al,

Schematic Diagram

..

6-27

6-13. Driver Amplifier A4, A5, A6, A7 (07754-60170)

Component

Location

Diagram.

. . . . 6-28

6-14. Driver Amplifier A4, A5, A6, A7;

Schematic Diagram 6-29

6-15. Regulator/Oscillator A8

(60

Hz, 07754-60180),

orA9(50

Hz, 07754-60181),

Component

Location Diagram and

Schematic.

. . . 6-30

6-16. Drive Unit

AI0

(07754-60250)

Subassemblies,

Parts Location Diagram 6-31

6-17. Gearbox

AI0Al

(07754-60040),

Parts Location

Diagrams . . . . . . . . . . . . . 6-32

6-18. Galvanometer

All,

A12, A13,

A14

(07754-60070), Parts Location Diagram . 6-33

6-19. Marker A15, A16

(07754-60350),

Parts Location

Diagram . . . . . . . .

..

. 6-34

6-20. Oscillator,

2400HzA17

(868-500ACI3)

. 6-34

6-21. Oscillator,

440HzA18

(868-500ACI4)

.6-35

6-22. Accessories, A19 (Reference)

....

. 6-35

· 5-13

· 5-14

· 5-15

4-3

4-6

4-7 4-8

4-9

4-4

4-5

· 5-12

· 5-3

·

5-11

· 5-16

· 5-18

· 5-31

.4-10

4-12

· 4-12

.5-19 .5-20

.5-21 .5-22 .5-24

.5-25

.5-26 .5-27 .5-28 .5-28 .5-29 .5-29

5-1. Test and Adjustment Points 5-2. Test Cable, Plug and Fixtures 5-3. Driver Amplifier and Regulator/

Oscillator Test

....

~2.

Preamplifier Power Supply Circuits,

Simplified Diagram

4-3. Recorder Signal Circuits, Simplified

Diagram .

~4.

Galvanometer Position Feedback

Circuit . 4-5. Galvanometer Damping 4-6. Recorder Power

Control

Circuits,

Simplified Diagram 4-7. Chart Drive Gears

4-8. Gearbox Power Flow 4-9. Paper Feed Path 4-10. Recorder Power Supply and Regulator

Circuits, Simplified Circuit

4-11.

440

Hz Oscillator Circuit

4-12. 2400 Hz Oscillator Circuit

5-4. Regulator/Oscillator Board Test

Points . . . . . . . .

5-5. Driver Amplifier Board Test Points 5-6. Recorder Lubrication Points 5-7. Paper Brake Felt Cover Removal and

Replacement

....

5-8. Stylus Adjustments . . . .

5-9. Channel Time Synchronization

Adjustment

....

5-10. Stylus Removal

and

Replacement 5-11. Stylus Lapping Procedure

5-12. Drive Unit Removal . . . . .

5-13. Paper Table Removal

....

5-14. Drive Roller and Table Link Removal

(Part

1) .

5-15. Drive Roller

and

Table Link Removal

(Part 2) 5-16. Gearbox Removal . 5-1

7. Drive Chain Removal .

5-18. Gearbox Inspection and Solenoid Adjustment

5-19. Gearbox Cover Removal 5-20. Gearbox

Shaft

Removal

5-21. Spring Clutch Lubrication

(Primary Shaft)

LIST OF TABLES

Table

1-1. Model

7424A

Recording System

Specifications

(7754A

Recorder)

1-2. Model

7414A

Recording System,

Equipment

Options

5-1. Recommended

Test

Equipment

5-2. Lubricants

and

Solvents Required

Page

1-2

1-3 5-1

5-2

Table

5-3. Electrical Performance Checks

and

Adjustments

54.

Paper Drive Troubleshooting

6-1. Replaceable Parts 6-2. Code List

of

Manufacturers

Page

.

54

.

.5-15

. 6-3 .6-18

07414-1

jj

Section I General Information

1-0

Model 7414A

MODEL

7414A

RECORDER

IN

BENCHTOPENCLOSURE

MOBILECART

OPTION

054

Figure 1-1. Model 7414A Recording System and Optional Configurations

07414-1

Model

7414A

SECTION I

GENERAL

INFORMATION

Section I

General Information

1-1.

INTRODUCTION.

1-2. This manual contains installation, operating, and maintenance instructions for

your

Hewlett-Packard Model 7414A Recording System, which has four channels, and produces four recorded traces with heated styli on heatsensitive chart paper Permapaper.® Other manuals, for use

with the 8800-Series Preamplifiers, and for

other

equipment ordered with the 7414A System are provided separately since a variety

of

preamplifiers, scopes, tape

re-

corders,

computer

terminals and control units

may

be used

with the recording system.

1-3.

FOUR-CHANNEL

RECORDER.

1-4. The Model 7414A Recorder (Figure 1-1)atthe core

of

the system,issupplied

mounted

in a

benchtop

enclosure.

It

is

optionally available

mountedina mobile cart, or

unenclosed, for mounting in an existing

equipment

rack.

1-5. The Recorder houses

uptofour Hewlett-Packard

8800

Series Preamplifiers and supplies

them

with operating power and signal connections. The preamplifiers, selected for each channel and ordered separately, are installed and tested with the recorder

at

the factory.Itis

easytochange

the function

of

any channelbyloosening two front panel

thumbscrews and replacing the preamplifier with a different

model.

1-6. The Model

7414A

Recording System records signals monitored from devices, processes, or transducers. To monitor

a signal, connect the signal cable to the

input

connector for the assigned channel

on

the recorder rear

panel. The rear panel inputs are connected

to

signal condi-

tioning preamplifiers

mountedinthe recorder. Each pre-

amplifier

outputisapplied to a power amplifier

that

drives

one recording stylus.

From

the preamplifier

output

on,

all

four channels are identical.

For

easeofmaintenance, all electrical adjustments are accessible from the front or top of

the recorder, and most assemblies can be removed with

the recorder

mounted

in the enclosure, mobile cart, or

equipment

rack.

1-7. The recorder uses Z-fold chart paper for convenient

access to any

part

of

the recording. The folded paper

permits rapid scanning

of

the record

to

assess response trends. All pages are numbered to allow insertion in a notebook,

or

the complete record may be filed in the

original flat

box

(pages are 8 x 12 inches,20x

30

cm,

approximately). A new pack

of

chart paper can be loaded

quickly, in less

than

ten

seconds,

to

minimize loss

of

recording continuity.

07414-1

1-8. The recorder may be remotely controlled to mark events, start, or go on standby. Two event markers are provided; one permits the user to indicate the start and finish

of

an event, the second provides time interval

marking in minutes

or

seconds.

1-9. Applications

and

Specifications.

1-10. A wide selectionoftransducers and Hewlett-Packard

preamplifiers are available for research, laboratory, and industrial applications. The following list gives some typical applications where data can be measured, monitored, and recorded using the recorder and Hewlett-Packard preamplifiers:

Engine Testing Aircraft, Missile, and Space Flight Analysis Seismographic Studies Environmental Pollution Monitoring

Telemetry Systems

Production Control

Relative Displacement and Velocity Monitoring

1-11. Hewlett-Packard will be glad

to

cooperate in the

selection

of

transducers and preamplifiers for any particular

measurement, and to send you information

as

additional

instruments are developed

to

provide

your

recording system

with

other

capabilities.

For

help in expanding

your

system,

con tact the field engineer

at

any Hewlett-Packard Sales/

Service Office listed in the

backofthis manual.

1-12. Table

1-1

gives the specifications for the Model

7754A Recorder, a

partofthe Model

7414A

Thermal Tip

Recording System, and Table

1-2

lists the recorder options available. Preamplifier specifications will be found in the separate preamplifier manuals. Preamplifier frequency response and rise time

must

be modified by the frequency response and rise time specifications given for the recorder. Recording quality

is

improved by the recorder's low level

of

hysteresis distortion. Minor waveform details are

not

obscured by recorder-contributed distortion.

1-13. 8800 Series Preamplifiers

(7414A

System).

1-14. The

7414A

Recording Systemisfactory assembled

for use with the solid-state

8800

Series Preamplifiers (Figure 1-2). They plug in interchangeably from the front of

the recorder. Signal connections are madeatthe rear,

but

signals can be monitored from the

front

of

the

preamplifiers. The general characteristics

of

each preampli-

fier are given in the following paragraphs.

For

complete

information see the preamplifier instruction manual.

1-1

Section I General Information

Table 1-1. Model 7414A Recording System Specifications (7754A Recorder)

Model 7414A

1-2

SENSITIVITY: ±2.5 volts (±0.5 volts) full scale.

(Adjustable.)

FREQUENCY RESPONSE: Flat within ±0.5

dB

(±6%), dc to50Hz, reference 50 div. at 10 Hz; down

less

than 3dBat 100 Hz, reference 10 div. at 10 Hz.

POWER

RESPONSE: At 50

Hz:

More than 50 divi-

sions (full scale). At 100 Hz: More than 10 divisions.

CHART SPEEDS:

0.25,0.5,1.0,2.5,10,25,50,

and

100 mm/sec. Speed Regulation:

±1%.Paper

Weave:

Less

than 0.5 mm. (Speeds selected

via

panel push-

buttons.)

INPUT IMPEDANCE: Loading at preamplifier out-

putis50 kilohms, min.

NOISE: Not discernible with recorder input open or

shorted.

GAIN

STABILITY:

(One hour warmup). Tempera-

ture: 0.25 div/25°C, from 20°C to 40°C. Line Volt-

age:

0.25 divisions from 103 to 127 vac.

ZERO

DRIFT:

(One hour warmup, input shorted). Temperature: 0.25 div/25°C, from 20°C to 40°C. Line Voltage: 0.25 divisions from 103

to

127 vac.

OUTPUT

LINEARITY:

Error

less

than ±0.25

divi-

sions at any scale point, including hysteresis (after

calibration at center scale and at +20 divisions).

With 8808A Log-Audio Preamplifier, error

less

than

0.5 division at any scale point, including hysteresis (after calibration for zero error at upper and lower scale ends).

RISE TIME: 5 milliseconds over any 20 divisions

(10% to 90%), overshoot adjusted for

4%

or less.

LIMITING:

Stylus limit

1.5

mm over channel edge

(adjustable).

MARKERS: Event: Local or remote control (mono-

polar), located on right side, between channels 3 and

4. Timed: 1 minute or 1 second interval (monopolar), located on left side, between channels 1 and 2.

HYSTERESIS:

Less than ±0.15 divisions (see line-

arity).

DAMPING: Galvanometer damping set

to

about

4%

overshoot.

CHART PAPER: Four

40

mm wide channels, each

with 50 divisions; time lines every 1 mm; heat

sensitive Z-fold Permapaper ® with green grid lines

is

available in packsof500 sheets, each sheet 12 inches (30 cm) long, and numbered for footage and indexing.

Green grid lines and black stylus trace make recording suitable for reproduction.

PAPER

LOADING:

No threading required. Loading

in 10 seconds.

PAPERTAKE

UP:

On shelfofrecorder, or in drawer

provided with cart installations.

TRACE WIDTH: 0.020 inches (0.5 mm) nominal;

depends upon heat control setting.

REMOTE OPERATION: Rear panel connector J8:

Remote operation

of

chart drive, event marker, optional extra marker. Connector also supplies ±12, ±20, and -24 vdc.

FRONT PANEL CONTROLS: Power, Chart Drive,

Chart Speed selection, Time Marker, Event Marker, Channel Heat controls.

OTHER CONTROLS: Each Channel: Position, Gain,

Damping,

High Limit, Low Limit,

440HzOscillator

Amplitude.

POWER

REQUIRED: 115/230 volts ac, (±10%), 60

Hz

(50

Hz

optional), 300 watts. Warmup time,

ap-

proximately15seconds.

DIMENSIONS: Height: 10.5 inches (29 cm). Width:

19.0 inches (48.3 cm), for standard rack. Depth:

22.75 inches (57.3 cm). Projection: 2.5 inches (6.3 cm) from rack fron t.

Bench

Top

Enclosure: Height: 11.87 inches (30.2

cm). Width: 20.25 inches (51 cm). Depth: 24 inches (60.5 cm). Paper Takeup Tray projects 10.5 inches (26.4 cm) from front; hangs down 5.5 inches (13.8 cm).

Mobile

Cart

(Option

054): Height:

41

inches (105

cm). Width: 23 inches (59 cm). Depth:

31

inches (79

cm).

WEIGHT: Recorder: 76

Ibs

(34.4 kg). Bench Top

Enclosure:

94

Ibs

(42.5 kg); with paper takeup shelf

95.5 Ibs (43.3 kg); with Mobile Cart: 1911bs (81 kg).

ENVIRONMENT: Maximum ambient temperature

(free air circulation): 40°C (104°F). No free air

cir~ulation:

25°C (77°F). Location: Free from dust,

explosive vapors, corrosive vapors, and extreme cold.

07414-1

I

Model 7414A

Option

001

008

012

015

054

Part

Number

7414A

07754-60600

07754-60350

Section I

General Information

Table

1-2. Model 7414A Recording System, Equipment Options

Description

Four Channel Thermal Tip Recording System, 60 Hz, 115/230V ac; mint gray front panels, jade green knobs, 440

Hz

Oscillator for 8803A High Gain Preamplifier, and

2400

Hz

Oscillator for 8805A Carrier Preamplifier; moss gray Bench Top Enclosure

07754-60261.

Rack mounting kit (Figure 2-7), with paper take-up tray and panel.

For 115/230V ac, 50

Hz

operation.

Less one channel; right channel No. 4

is

deleted, event marker installed between

channels 2 and 3, extra marker cannot be installed with this option.

Extra monopolar marker installed between channels 2 and 3; this marker cannot be installed with Option 012.

Mounted in 1064B Mobile Cart; moss gray, with paper take-up drawer, blank panel.

Note: For a complete System, order up to four 8800 Series Preamplifiers.

Figure 1-2.

8800

Series Preamplifiers

07414-1

1-3

Section I General Information

1-15. MODEL 8801A

LOW

GAINDCPREAMPLIFIER.-

With a maximum sensitivity

of

5 mV/div, the 8801A provides stable and precise amplification from dc to the limit

of

the recorder's capability, or up to

10kHz

when

used with an oscilloscope or other indicator. The 8801 A

features calibrated zero suppression with limits

of

±10 and

±100 volts.

1-16.

MODEL

8802A

MEDIUM GAIN

DC

PRE-

AMPLIFIER. - The 8802A has a gain

thatisfive

times

greater than the 8801A and zero suppression to

±2

and ±20

volts. Except for the common-mode tolerance, which

is smaller by a factoroffive on the high sensitivity positions of

the RANGE control, the choice between the 8801A and

8802A depends directly

on

signal input requirements.

1-17. MODEL 8803A

LOW

LEVEL PREAMPLIFIER. -

With a maximum sensitivity

of

1 IlV/div, corresponding to a

gain

of

100,000, the 8803A accommodates a much wider rqngeofsignal amplitude (within a bandwidthofdc to 100 Hz) than the 8801A and 8802A. The 8803A features a fully-guarded input circuit, with a floating input and

common-mode rejection

as

highas160dBat dc (120dBat

60

Hz).

In addition to a high rejection ratio, the input

circuit will tolerate a common-mode voltage

as

highas±300

Vdc at any position

of

the RANGE control. Calibrated zero

suppression

is

provided in three maximum ranges: ±1, ±10,

and ±I00 volts with resolution to

10-

3

.

1-18. MODELS 8805A/B CARRIER AMPLIFIER. - The 8805s measure any physical variable

that

can be coupled to

a suitable transducer, i.e., strain

gage

bridge, resistance or reactance transducer, or differential transformer. A partial listing

of

physical variables includes: strain, pressure, force,

velocity, flow and acceleration. A 2400

Hz

oscillator in the

recording system provides an excitation voltage which

is amplified by a buffer amplifier in the 8805 to a power level appropriate for exciting the external transducer, eliminating the need for an external excitation circuit. The excitation

voltage, 5 Vrms at 2400 Hz, can drive a load resistance greater than 100 ohms; the amplifier will operate with

sources having

an

internal impedanceupto

5000

ohms

at

the signal

input

terminals. Calibrated zero suppression permits analyzing small signals when large static loads are present on the transducer. A calibration factor control allows attenuation and zero suppression to be calibrated in terms

of

transducer load units.

1-19.

MODEL 8806B PHASE-SENSITIVE DEMODU-

LATOR. - The 8806B provides a dc

output

proportional

1-4

Model 7414A

to the rms value

of

an input signal component thatisin

phase,

or

1800outofphase with respect to an external

ac

reference voltage. For flexibility, the phase-reference volt-

age

can be shifted to any phase angle by three plug-in

calibrated phase shifters, available for frequencies

of

60,

400,

or

5000 Hz. A fourth plug-in phase shifter covers six

frequency bands from 50

Hz

to 40 kHz and provides for

continuous phase shifting from 0

0

to 360

0

•

Other features

include transformer isolation for

both

the signal and reference voltage circuits, and a maximum calibrated sensitivity of

0.5 mV rms/div, corresponding to a gainof200 (rms ac

to dc).

1-20. MODEL 8807A

AC

TO

DC

CONVERTER. - The

8807A provides a dc voltage

output

proportional to the average value

of

a full-wave rectified ac input signal. Range

sensitivity

is

calibrated in terms

of

rms, for sinusoidal

waveforms. The

input

circuitistransformer coupled, floating, and guarded for high common-mode rejection, allowing measurements over a wide range

of

input signal conditions:

3 mV to 500 Vrms, from 50

Hz

to 100 kHz. Calibrated zero suppression and variable scale expansion permit clear analysis

of

small excursions in large

input

signals.

1-21. MODEL 8808A LOG LEVEL PREAMPLIFIER. -

The 8808A contains compression and full-wave detection

circuits

that

provide an

output

proportional to the

log}0of

the ac

input

signal amplitude, expressed in decibels, where

zero decibels

is

takenasa 1 volt rms sine-wave input

voltage. The unit provides for 50

dB

and 100dBranges, with full-span outputs corresponding to ±2.5 volts or 0 to +5

volts.

Input

signals from 3

mvto300

Vrms may be

recorded without changing ranges; a voltage ratio

of

100,000 (100 dB).

1-22. MODEL 8809A SIGNAL COUPLER. - The 8809A

is

a low cost, solid state preamplifier with selectable high or

low

input

impedance and a GAIN control.Itis

used for

simple signal coupling

toanHP

direct writing recorder, in

single and multichannel systems.

1-23. Accessories.

1-24. For a listofrecorder accessories, refer to Table 6-1, Assembly A19, Accessories. Order accessories by their individual part numbers. For other system accessories, refer to the separate equipment manuals provided with the recording system.

07414-1

I

Model 7414A

2-1.

INITIAL

INSPECTION.

SECTION II

INSTALLATION

2-11.

INSTALLATION.

Section II

Installation

I I

I

2-2. Initial inspection consists

of

a check for physical

damage incurred during shipping,

and

the

completionofall

performance tests. See Figure

2-1

for

Recorder

inspection

particulars.

2-3. Mechanical Check.

24.Ifdamagetothe

shipping

cartonisevident,

notify

the

HP

Sales/Service Office and

unpack

the

equipment

in the

presenceofthe

carrier's agent. Upon unpacking, inspect the

instrument

for mechanical damage such as scratches, dents,

broken

knobs,orother

defects. Also

check

the cushioning

maieri'!lsfor signsofsevere stress during handling.

2-5. Performance Tests.

2-6. The electrical

and

mechanical performance

of

the

Model 7414A Thermal Tip Recording System

may

be

verified

upon

receipt, using

performance

tests described in

Section V, Maintenance. An 8800-Series Preamplifier

must

be in place for these tests.

2-7. Damage Claims.

2-8.Ifthe

instrumentisdamagedintransit,

notify

the

carrier

and

the

nearest Hewlett-Packard Sales/Service Office

immediately.

For

your

convenience, a listofthese offices

is

located in

the

rearofthis manual. Keep

the

shipping

carton and packaging material for the carrier's inspection. The Sales/Service Office will arrange for repair or replacement of

the

System

without

waiting for claim

settlements

from

the

carrier.

2-9. STORAGE.

2-10.Ifthe

Recording Systemistobestored

for a period

of

time, wrap the

front

panels in protective padding and

seal

the

equipment

in a

moisture-proof

covering. Repackage

the System in a

container

similartothe original factory

carton.Ifthe

Systemisinstalled in a Bench

Top

Enclosure,

leave it

mounted

in the enclosure.Ifitisinstalled in a

Mobile Cartorequipment

rack, remove it from the

cart

or

rack

to

facilitate

moistureproof

packaging.Iflong-term

storageisanticipated,

pull

the

paper

table

outatthe Cart

drawer and

unlatch

it. This will prevent a flat

spot

from

developing

on

the

drive roller from the spring-loaded

pressurerolle

r.

07414-1

2-12. Recording Systems installed in

the

Bench

Top

Enclo-

suredonot

require installation instructions.

For

access to

the Recorder, loosen

knobsatthe

frontofthe case and

raise the

top

cover (see Figure 2-1).Ifthe Recorder

is

installed in a Mobile Cart, release

the

four front-panel

shipping screws

to

slide the Recorder

out

for receiving

inspection and

performance

checks (see Figure 2-1).Ifthe

Recorderisinstalled in an existing

equipment

rack,

the

rack

slides

must

be installed before

mounting

the

Recorder

(Option

001).

2-13. Preamplifier Installation.

2-14. The Recording

Systemisshipped with all preampli-

fiers installed.

To

change a preamplifier,

perform

the

following steps.

a. Switch

off

Recorder

power.

b. Loosen

the

top

and

bottom

front

panel screws and

pull

the

preamplifier straigh tout.

c. Insert the

replacement

preamplifier

into

the channel

guide,

push

firmlytomate

connectors,

and tighten screws

at

the

top

and

bottomofthe

front

panel.

2-15. Power Connections.

2-16. Check

that

the

power

line voltage

and

frequency

is

the same as

that

shownonthe

Recorder

nameplate,

located

onashelfatthe

left

sideofthe

rear panel (see Figure 2-2).

Note locationsofthe

fuses.

2-17. When making

power

connections,

push

the

POWER

button

on

the

front

panel so

thatitprotrudes

and

a

Z-shaped line appears. Otherwise, the recorder will

start

when

the

power

cordisplugged in. RefertoFigure 2-3 and

perform

the

following steps for Mobile Cart

power

connec-

tions.

a.

Connectaground

wire (as shown)toa good

earth

ground,

suchasa cold

water

pipe.

b. Check

that

the

paper

take-up drawerisgrounded

with

a

strap,

and

that

the

recorder chassisisgroundedtothe

cart.

c. Plug

the

power

cord

connector

into

the

recorder

POWER INPUT

jack,

and

into

the

line receptacle

built

into

the cart.

d.

Connect

the

cart

power

cord to a 3-wire line

outlet,

completing

the

power

connections.

2-1

Section n

Installation

REMOVE 2

SCREWS

FOR

ACCESS TO

RETAINING SCREWS

Model 7414A

TYPICAL

RETAINING

SCREWS

Press front slide locks to slide recorder back into cart or cabinet.

WARNING:

DO

NOT

ACTUATE REAR SLIDE LOCKS

UNLESS RECORDER IS SUPPORTED FOR REMOVAL.

Press rear slide locks to slide recorder completely

out

of

retaining slides.

I

2-2

Figure 2-1. Recorder Access

for

Receiving Inspection

07414·1

Model

7414A

AUXILIARY

SIGNAL

DRIVER

AMPLIFIERS

r------===~======----------"

I~-====:::::c=====------..

Section II

Installation

J24

SIGNAL INPUT

F3----~r-

......

F4

F5

FUSE

COMPLEMENT

Reference Designator

J23

J22

Service

J21

J19 J18

J8

POWER

OUT/REMOTE

J16 J15

S4

F1

i-+;-'-F2

J5 POWER IN

Value

and

Type

F1

F2

F3 F4 F5 F6 (not shown)

AC Power, 115V Service AC Power, 230V Service

Recorder, 115V Service

Recorder, 230V Service

+20V dc

-20V

dc

-24V

dc

2400

Hz

Oscillator (Option 004)

-20V

dc

supply -

See

Figure 6-7.

6A 3AT

2.5AT

1.25AT 3AT 3AT 3AT

100mAT

Figure 2-2. Recorder Rear Panel Connections and Fuse Locations

07414-

i

2-3

Figure 2-3. Recorder

and

Mobile

Cart Power Connections

Section II Installation

CART

POWER CORD

TO

WALL

OUTLET

POWER OUTLETS

BARE

COLD

WATER PIPE

OR

OTHER

EARTH

GROUND

RECORDER POWER CORD

MOBILE

CART

GROUNDING

WIRE

DRAWER

GROUNDING

STRAP

Model

7414A

,

2-18. Signal Connections.

2-19.

For

signal connection information relative to the

individual preamplifiers, refer to the preamplifier instruc-

tion manuals. Also refer to Figure 2-4 for a description

of

signal cable preparation for the 8800-Series Preamplifiers.

2-20. Tape System Connections.

2-21.

If

an instrumentation tape recorderisto

be used with

the Recording System, the addition

ofa

4681A

or a

4682A

2-4

Control Section

is

recommended. Connections for the

Recorder and

the

Control Sections are shown in Figure 2-5.

2-22. Remote Control and Marker Connections.

2-23. A remote

control

and marker plugissupplied with

the Recorder

as

an accessory. To make remote control connections for operating the Recorder and the Event Marker, make the cable connections shown in Figure 2-6, using the HP parts noted in the illustration.

07414-1

1

II

I I

Model 7414A

Section II

Installation

SIGNAL CONNECTOR PREPARATION

I

II

a.

Slide the prepared

endofthe cable into

the

cable clamp and through the

connector

shell. Also slide the endofthe

cable through the guard shield

extension, for guarded input circuits.

For

non-guarded

input

circuits,

remove and store the guard shield extension.

b.

Wire

the connector according to the diagram below, according

to

preamplifiertobe used. For guarded

input

circuits, slide the guard shield

extension

into

place after soldering the signal leadstoterminals A and

B.

c.

Press the

connector

block carefully into the connector shell.

d. Insert the retaining ring.

e.

Tighten the cable screws.

f.

Check with an

ohmmeter

to determine

that

the cable shields are not

shorted to

the

connector

shell ortoeach

other.

Connector HP 1251-1895

GUARD

~

CABLE

SHIELD

I

CLAMP

~

,

ETAINER

~

RING

~~.~.

INSULATOR

\%i

,BLOCK

'"

GUARD

SHIELD

EXTENSION

SHELL

SIG+

.........

~---.

1/4

1/4 1/4

1/4

SHIELD

~

t

CONNECTION

Double-

---

Shield Cable

lq

HP

8120-0800

cO~'i:~~~I:;:

3/4~1-1/4

~

,-,

-

SIG

-

-+--+-L-.l..--~

SIG

-

-++-----,

SIG+

PREAMPLIFIER MODEL

8803A

8806B

*

8807A

**

GUARDED CABLE PREPARATION

SingleShield Cable

HP8120-0718

NOTES:

!I

I

II

* 1. Connect

Ref

voltagetopins A and B

on

auxiliary

connectorofthe

power

supply.

**

1.ACoutput

availableonpinCof

aux

iliary

connector

of

the

power

supply.

2. DC

input

(8807A,

Opt

02) availableonpins A

and

B

of

auxiliary

connectorofthe

power

supply.

2

SIG

-

-;'--H-'---~

S

IG

+

.....:....~----.

Double-

Shield Cable

HP

8120-0800

1/4

1/4 1/4

~M~,~IELO

~NECTION

1--

1-1

/

4

SIG

- .........

+-----,

SIG+

PREAMPLIFIER MODEL

8801A 8802A 8808A 8809A

"NOTE:

NON-GUARDED

CABLE PREPARATION

SingleShield Cable

HP 8120-0718

II

I

I!

Single

conductorshielded cable can be used

by

connecting center

conductortopin

A and

shieldtopin

B.

CARRIER

PREAMPLIFIER CABLE PREPARATION

II

PREAMPLIFIER MODEL

8805A 8805B

HP

Transducers having 5-pin

AN

connectors (pin

pattern

0 )

useInput

Adapter

14060B

for

sig-

nal

input

connections.

For

other

signal sources,

connect

the

input

signalsasshown.

The

transducer

output

leads and transducer

excitation

leads

must

be

twisted

and enclosed in braided shielding.

II

Figure

24.

7414A System

Input

Cable Preparation

I

II

07414-1

2-5

Section III Operation

3 4 5

Model

7414A

6

II

1.

RECORDER

POWER SWITCH: Press

to

apply

power; presstoremove power. Back-lighted

with

power

applied.

2.8800-SERIES

PREAMPLIFIERS:

Refer

to

the

individual

instruction

manuals

for

control

infor-

mation.

3.

MODE

CONTROL

BUTTONS: Pressing

the

STDBY

button

holds

the

styliofall

channels

at

chart

center

during

Recorder

operation.

The

REMOTE

button

transfers

controlofthe

Recorder

"run

mode"

toaremote

location.

The

RUN

button

starts

the

chart

drive, applies

heattothe

styli

and

signalstothe

recording circuits.

4.

SPEED

MM/SEC

CONTROL

BUTTONS: Nine

speed

selection

buttons

select

standard

chart

speeds

from

0.25

to

100

mm/second.

Button

remains depressedtoindicate

selected

chart

speed.

5.

TIMER

BUTTONS:

The

OFF

button-turns

off

the

interval timing

marker.

The

SEC

button

selects

timing

marks

at

1-second intervals.

The

MIN

button

selects

timing

marksat1-minute

intervals.

The

EVENT

MARKER

button

applies a

marker

pulse

when

pressed,tomark events in

the

process

being

recorded.

6.

STYLUS

HEAT

CONTROLS:

Individual

controls

adjust

the

heatateach

stylus

tip,

and

thereby

the

trace

width.

More

stylus

heatisgenerally required

for

high-frequency signals

than

low-frequency

signals.

Once

adjusted,

stylus

heatisautomatically

regulatedtocompensate

for

changesinchart

paper

speed.

7. PAPER

TAKEUP

DRAWER (CART):

The

takeup

drawer

pulls

outtoreceive used

chart

paper.

For

Bench

Top

Enclosure models, a

paper

takeup

shelf

is

provided. Install as

showninFigure 3-2.

II II

II

Ij

II

3-2

Figure 3-1. 7414A Recording System,

Control

Locations

07414-1

II

Model 7414A

Section III

Operation

1.

UNWRAP

PAPER and remove cardboard. Make sure highest odd

numberison

topofpack.

2.

PULL

PAPER

TABLE

OUTATBdTTOM.

3. LOWERITSLOWLY.Itmust be

fully

horizontal.

4.

SLIDE

PAPER PACK

INTO

FEED

TRAY

while

compressing paper,

and

pulling

top

sheet

out.

6. CLOSE PAPER

TABLE,

pulling

down

slightly

on paper.

Press

table

in

firmlysoit

locks in place.

Note

that

tabontakeup tray

catches

in

holeoncase lip.

9. IF RECORDER IS IN A

CART

OR A

CABINET,

PULL

OUT

PAPER

TAKEUP

DRAWER.

Odd-numbered sheet shouldbefirst

into

drawer.

8.

IF

RECORDERISIN A CASE, IN

TALL

TAKEUP

TRAY.

Note

thatanodd-numb

red

sheet should b

first

onto

tray.

Figure 3-2. Paper Loading Procedure

07414-1

3-3

Section IV Principles

of

Operation

Model 7754A/7414A

JUMPER

PREAMPLIFIER,----,

RECORDER

OUTPUTS

c:::::J

c=:J

INPUTS

GALVANOMETER

COIL

...

~

1

I

EXTRA

MARKER

COIL

MARKER

STYLUS

HEATER

I

~

I

..-J

TIMED MARKER COIL

I

Q

I

POSITION

I

'-

TRANSDUCER

~~-----,

I

~~~~~;

I

HEATER

~

RESS;URE

__

....

~.

ROLLER

DRIVE

~

ROLLER/

I

MARKER DRIVER

MM/SEC

SELeCT

-

GEARBOX

MOT

-

50-60

HZ~TIME

AMPLIFIER

GENERATOR

""-

MARKER SUPPLY

-24V RUN

1

A3K1 MOTOR RELAY

R3

:

R1

L

-20f,!

-

SIGNAL

{F6

-20V

SIGNAL

HE,IlT

POWER SUPPLY A3

-24V

POWER AMPL

-

r

n1

1--

1

OUTPUT

-

INPUT.o-

AUX

ILIA

RY·

1':----+

...

-.----

-

8800

SERIES PREAMPLIFIER (SELECTED)

115/230V

SW.

FROM

TRANSDUCER

-24V

RUN

II

l J

f-----

+12V

REGULATOR CIRCUITS

1

~

-12V

I

EVENT

I

L-

~

REGULATOR/OSCILLATOR

MARKER

I

EVENT

MARK

I

A8(60

HZ),

A9lS0

HZ)

I

COIL

POINER

~~~

I_--------------L----------------

-L

~~U~A~

-

I

AUX POWER OUTLET

EXTRA

-

A3R2

MARKER

I

C).

-12V

_,

S1

A

powER

I

.....1-

115/230V

F1

F2

RECTIFIER

TO

MOTOR

115/230V

.-

CIRCUITS

A-

POWER

-

Q-1~

-

'"

I

INLET

J3;-;---------------------------------,---------------------.,

POWER

I I I

R

R5

INPUT

R15

AMPL

I

••

}

•••

~L

RS··

~

I I I

«?:~'.

A6

V

LlMITEAS

!

Al~

!

'7 I

--

--------,

I

COMPENSATION

I

AND

- -

-I

I

DAMPING

I

GAIN

0

,I

I I

TRIM

I I

•

HEAT

CONTROL

I

'~I I

AMPLIFIER

I 1 I

~---------'--:7'"T-

----

I I

DRIVERAMPLIFIER

J

I~?DE

RUN

CONTROL

PANEL

I I

A4,

AS,A6OR

A7

(WITCH

....

A2Al

I •

r-;:p:;;;:;;O:;R::---------

I

~

OREMOTE

,-+-------~.-t-----+-+-------:.---l

.....

---t---..,Ir---------------{

4

12V

CHART

SPEED

I ,

I- I

~D~:

r:.~4

---k.

SWITCH

I

~::;ER

+12V

I I

I

~

(04~_.__4~~

.~A

~.~--f-+-.......-.---I---+---.

I

.5

/~

I

HEAT

I I

l~

~~

-\-

_~

I

ADJUST

~..

.,~

I I

I

r<J

0

¥~

_4~

:::

1 "

-12V~

I I

I I '-0.

(SEE

FIGURE

4-5

FOR

I

POSITION

I I

ACTUAL

CIRCUIT)

TRIM

I 6

EVENT

MIN

I I

1

lroJ

0-

l • 1

M

~ARKER

-

OOFFI

HEAT

POT

PREAMPLIFIER

I

I I

~

4,....-

TIMER

BOARD

POWER

SUPPLY

r---------------------

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R29

F/gure 4-1. Model 7754A Recorder,

Block

Diagram.

4-0

07754-1

Model 7754A/7414A

Section IV

Principles

of

Operation

SECTION

IV

PRINCIPLES OF OPERATION

4-1.

INTRODUCTION.

4-2. This section describes the principlesofoperation

of the Thermal Tip Recorder. The Recorder includes signal, power control, and power circuits, and a chart drive mechanism. The signal circuits are described for one channel only, as

all channels are identical. The power circuits and chart

drive are common to

all channels. This section provides

functional block and schematic diagrams

of

the Recorder;

for complete schematics, refer

to

Section VIatthe rear

of the manual.

4-3.

As

shown in the Block Diagram, Figure 4-1, the pre-

amplifier signal

is

routed through a jumper cable on the rear

panel to the driver amplifier, where it

is

amplified, limited, and combined with position feedback from the stylus position transducer.

It

is

then

amplified further and applied

to the galvanometer, which drives the heated signal stylus, producing a trace on the heat-sensitive Permapaper. The Perma-

paper

is

pulled through the recorderbya drive roller, which

is

driven through a variable speed gearbox

thatiselectri-

cally controlled from the front panel.

Four

solenoids and gear sets are used in various combinations to produce the full range

of

chart speeds. In conjunction with speed selec-

tion, the selector switch varies the stylus

heatsoitispro-

portional

to

the chart speed. Heat adjustment controls on

the front panel may be used

to

further vary the stylus

heat to compensate for greater stylus travel causedbyincreased signal frequency. Other circuits in the recorder include marker, timing, rectifier, regulator, and oscillator circuits. A regulated oscillator provides a

200

kHz excitation signal for the position transducer. The block diagram shows the assembly location

of

these functional component groups

as

a troubleshooting aid.

4-4. PREAMPLIFIER POWER SUPPLY CIRCUITS.

4-5. Figure 4-2, a simplified schematic diagram, shows the preamplifier power and signal connections

at

the top, and,

at the

bottom,

the recorder and preamplifier power supply circuits, including oscillators. The Preamplifier Power Supply board, A2A3, in addition to containing an oscillator fuse and power supply resistors, provides power amplification for the

440

Hz oscillator

output,

and connects the

front panel circuit boards

to

the transfer board. Refer

to the descriptionofthe recorder power supply for a description

of

these circuits.

4-6. Signals from the individual preamplifiers are routed into the power supply, on Transfer Board

A3Al,

and pass

through the rear panel, a jumper cable, and back into the

07754-1

power supply. From there they are applied

to

the inputs

of

the four driver amplifiers, which are discussed next.

4-7. RECORDER

SIGNAL

CIRCUITS.

4-8. The signal processing circuits consistofthe driver amplifiers, one for each channel, and the galvanometers. A simplified schematic diagram

of

these circuitsispresented

in Figure 4-3.

4-9. The signal from the preamplifier (or other source

that can be connectedtothe RECORDER INPUT jack) enters the driver amplifier and

is

appliedtoa summing junction

with the gain control signal and a transistor switch

that shorts

the

junctiontoground when the Recorderisin

standby mode. The signal

is

applied through R5tovoltage

amplifier

Ul

input

with position control voltage (±10mm on chart) and amplifier feedback being applied at the same point. After amplification, the signal and its control components encounter the limiter diodes, which

cut

the signal

off

at adjustable high and low levels. The diodes are

powered

by

emitter follower voltage sources (

not

shown). High, low, left, right, upscale and downscale are defined on the diagram. The signal, applied through R15

to

amplifier

driver U2,

is

then

current-limitedto600 mAbytransistors

Q5

and

Q8

and further amplifiedbypower amplifier Q4,

Q7

(not

shown), Q6, Q9. A feedback circuit around the

power amplifier and its driver acts as an

output

voltage

limiter (±12.5V).

4-10. The galvanometer circuit receives the driver amplifier output

signal, and the drive coil rotates a crank attached

to the signal stylus, which marks the recording chart. The galvanometer shaft is also attached

to

a capacitive position

transducer, described in Paragraph 4-14.

4-11. Stylus Linkage.

4-12. The linkage system shown in Figure 4-4 provides a linear motion at the stylus tip from the rotary

motion

of the galvanometer. The galvanometer moves the endofthe crank arm through the arc

of

a circle, and the endofthe

crank arm moves the center

of

the stylus through the same

arc. But because the inner end

of

the stylus frameiscon-

strained

by

a bearing

that

can move only toward or away

from the chart, the stylus tip moves in a straight line.

4-13. Galvanometer Position Feedback.

4-14. The position transducer consistsofa capacitor with a split

bottom

plate, one

top

plate

that

excites

both

bottom

4-1

Section IV Principles

of

Operation

plates, and a grounded rotor with apertures to permit passageofthe 200 kHz excitation signal. The rotorisattached to the galvanometer shaft. The bottom plate

is

divided into

four sections, connected diagonally (Figure 4-4)

so

that the

excitation

is

received differentially. This differential action keeps the load on the excitation oscillator constant, to aid the oscillator regulator in maintaining a constant

output current. Excitation signal amplitudeisimportant since it affects position transducer sensitivity.

4-15. The demodulator circuit senses the unbalance

between the two portionsofthe position sensing capacitor, caused

by

the amountofenergy from the oscillator that

is

coupled through the apertures in the rotor on the

galva-

nometer shaft.Ifthe circuitisbalanced,

both

halvesofthe

position capacitor receive equal amounts

of

200 kHz radi-

ation from the oscillator

output

plate. Refer to Figure

44.

On

theposi

tive excursion

of

the excitation signal

(200 kHz), diode CR2 conducts, turning on transistor

Q2

and charging

Cl.

Diode CRIisback-biased, and keeps

Ql cut

off

during this period. On the negative excursionofthe excitation signal, the opposite current flow takes place, with

Ql

cut

off

during this period. On the negative excur-

sion

of

the excitation signal, the opposite current flow

takes place, with

Ql

conducting the same amountasQ2 conducted previously. When the circuitisbalanced,Clthus reflects a net zero voltage

output.

During an unbalanced

condition, either

Ql

conducts more orQ2conducts more

to produce an average positive or negative voltage on

Cl.

4-16. An exampleofunbalanceisshown in Figure

44.

As the positive signal causes the galvanometer to move the stylus

as

shown, the rotor moves so that moreofthe oscil-

lator

outputisfelt on the shaded pairofsplit capacitor

plates. These plates are connected to the CRI-Q1 half

of the demodulator,sothat more negative voltageisimpressed upon

Cl.

The unshaded plates receive proportionately less

of

the oscillator

output,

and so CR2-Q2, the positive side

of the demodulator, produces less positive

output

for

Cl.

Cl, then, sends a negative feedback voltage to the driver amplifier, which tends to return the stylus toward the center

of the chart. The feedback voltageisaidedbya torsion spring that

facilitates settingofthe stylus mechanical center. For

maintenance purposes, note

that

one voltofposition volt·

age

correspondsto10 divisionsofstylus movement.

4-17. Galvanometer Damping.

4-18. The position feedback signalisfed back to the driver amplifier through resistor R36. Part

of

the position voltage

is

fed back throughC6as

velocity information andC4and C5asacceleration information. The amountofvelocity feedback controls the damping, which

is

varied with R30.

4-19. DAMPING. Damping is a force that

is

(1) propor-

4-2

Model 7754A/7414A

tional to galvanometer velocity and (2) opposite to the direction

of

pen motor velocity. Figure

4-5

shows the

effects

of

damping on frequency response and transient response, where underdamping produces peaked and oscillatory waveforms, and overdamping diminishes response. Optimum damping leaves about

71%of

the original signal

strength,

so

that the frequency responseisabout 3

dB down at the galvanometer's natural frequency and the response to a square wave (step function) input shows about

4%

overshoot.

4-20. Heat Control Circuit.

4-21. Stylus heatiscontrolled from the Heat Pot Board, A2A2, on the front panel. The heat control voltage

is applied to a simple feedback amplifier located on the driver amplifier assembly,

Qll,

Q12, and Q13, which has a cur-

rent limiting circuit similar to that used for the

galva-

nometer. The amplifier

output

drives the resistive stylus

heat element. A good stylus should have about

34

ohms

resistance.

4-22. Power Control Circuits.

4-23. Poweriscontrolled from the recorder front panel. Figure 4-6 shows recorder power switching and fuses together with chart motor control circuits and speed control solenoid circuit.

4-24.

line

common reaches the chart drive motor through

SI,

the power switch and S4, the voltage selector, whenever

SI

is

on. The high sideofline powerisapplied to the chart

drive motor through motor relay

Kl,

whichisactuated by

the control switch RUN

button

through interlockS3or by

a remote run signal (Figure 2-8). The motor

is

described

further in Paragraph 4-29.

Kl

also turns on stylus heat

through the control switch.

4-25. The motor drives the gearbox, the speeds

of

which

are controlled by speed selection solenoids

Ll,

L2, L3, and

IA. The speed control action

of

these solenoidsisdescribed

in

Paragraph 4-31. The segmentsofthe control switch are

so

arranged that the solenoids are energized in the correct combination for each speed desired (Table 4-1). The switch is

shown in the Imm/sec position.Asan exampleofhow

the switch works, the

-24V

supply voltage, applied to the

switch

via

the main feeder lineatthe topofFigure 4-6

energizes the center contacts

of

the switch segment.

When

the pushbutton marked

"I"isdepressed,

-24Visapplied

to solenoids

Ll

andL2through resistors R8 and R7 respec-

tively, selecting the proper gear combination. In speeds

of

2.5mm/sec and higher, the heat control voltageisaugmented by fixed voltages applied

to

the heat control poten-

tiometers by the control switch. The heat control poten-

07754-1

Model 7754A/7414A

Section IV

Principles

of

Operation

SIGNAL INPUT

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Figure 4-2. Preamplifier Power

Supply

Circuits,

Simplified

Diagram.

4-3

Section IV Principles

of

Operation

Model 7754A/7414A

10

R28

RI5

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Figure 4-3. RecorderSignal Circuits,

Simplified

Diagram.

Model 7754A/7414A

Section IV

Principles

of

Operation

~

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OVERDAMPED

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4%

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NATURAL

CI

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FRE-

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DETERMINED

BY

POSITION

FEEDBACK

•

Sine

Wave

Input

FREQUENCY

Step Function Input

TIME

Figure 4-5. Galvanometer Damping

07754-1 4-5

Section IV Principles

of

Operation

Model

7754A/7414A

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Figure 4-6. RecorderPower

Control

Circuits,

Simplified

Diagram.

4-6

07754-1

Model 7754A/7414A

tiometer setting permits front panel adjustment

of

the trace

density through the heat control circuit in each driver

amplifier (paragraph 4-21).

4-26.

CHART

DRIVE.

4-27. The recorder chart drive consists

of

a 115 volt ac motor, a gearbox with four clutches and speed selection solenoids, a pair

of

paper drive rollers, and a paper brake

, bar.

4-28. Chart Motor.

4-29. The chart

motorisa continuous duty, synchronous

motor with a speed

of

450

rpm for 60 Hz operation. A

sprocket gear on the

motor

shaft engages a drive chain

that transmits powertothe gearbox. To provide additional electrical safety, the

motorisinsulated from the recorder

chassis

by

non-eonducting spacers and an insulated sprocket

gear

at

the

gearbox input.

4-30.

Speed

Control.

I 4-31. Chart paper speed

is

variedbya gear train consisting

of

setsoffour gears, on two shafts (Figure 4-7). These

Section IV

Principles

of

Operation

shafts are fixed in place and do

not

rotate. Each setoffour

gears (A,

B,

C, and D) either provides

a'

~peed

reduction

with all four gears transmitting power, or

"no

speed reduc-

tion, with power bypassing the reduction gears through a

spring clutch

that

links gears A and D on the primary shaft.

Gear Dismachined together with Gear Aofthe next set,

so

powerisdirectly transmittedtothe next setofgears.

4-32. When direct drive

is

desired, the associated solenoid

is energized, withdrawing the plunger from the clutch pawls. The clutch then engages, coupling gears A

and

D. The

spring clutch between gears

Band

C automatically disen-

gages

since

output

gearC,being smaller than

input

gear

B,

rotates faster when gears A and D are in direct drive.

4-33. SPEED SELECTION SOLENOIDS. Solenoids

Ll,

L2,

L3

and

L4 control

the

speed reduction. They are energized

from Control Switch Assembly

A2Al.

The paper speeds

obtained by energizing different combinations

of

solenoids

are presented in Figure 4-8. Remember

thatasmore sole-

noids are energized,

the

fewer are the setsofgears

that

provide speed reduction, and thus

the

paper goes faster.

4-34. POWER FLOW. The mechanical power flow through the gearbox

is

diagrammed, for each speed, in Figure 4-8.

SECONDARY SHAFT

(FOR

ALIGNMENT

ONLY)

SPRING

CLUTCH

ACTS

SAMEASSPRAG-TYPE

CLUTCH,

TO

PERMIT

OVERRIDING

ACTION

WHEN

SOLENOIDISENERGIZED.

COIL

SPRING

CLUTCH:

STRAIGHT

THROUGH

DRIVE

WHEN

ENERGIZED

SOLENOID

ALLOWS

SLEEVE

TO

TURN

PRIMARY

SHAFT

(FOR

ALIGNMENT

ONLY)

07754-1

Figure 4-7. Chart Drive Gears

4-7

OUTPUT

NOTE:

ALL

FOUR

PAIRSOFGEARSONTHE

INPUT

SPROCKET

GEAR

OUTPUT

SHAFT

ARE

FREE·WHEELING

(INSULATED)

.25 mm/sec

E =

ENERGIZEOsoPAWLISWITHDRAWN

AND

CLUTCH

IS

ENGAGED

FOR

STRAIGHT·THRU

DRIVE

0.5 mm/sec

OUTPUT

GEAR

SPROCKET

1mm/sec

10mm/sec 25 mm/sec 50mm/sec

Section V Maintenance

2.5mm/sec

100mm/sec

4-8

Model 7754A/7414A

5 mm/sec

Paper Speed, MM/SEC

Energized

Solenoids

0.25

0.5

2.5

5

10

25

50

100

Ll

X

L2

X

Y

X

L3

X

X X

X

L4

X

Note:

When

solenoids

are

deenergized,

clutches

are

disen-

gaged,

permitting

pairsofprimary

gearstotransmit

power.

When

solenoids

are

energized

(power

on).

clutches

are

engaged,

causing

straight-through

drive.

Figure 4-8. Gearbox Power

Flow

07754-1

Model 7754A/7414A Section IV

Principles

of

Operation

Take the 1mm/sec speed flow

asanexample (top row, third from left). Power input from the drive motor enters the gearbox

via

the input drive sprocketatthe right sideofthe

upper (primary) shaft. Since solenoids

L1

andL2are ener-

gized, the first two sets

of

gears are directly coupled to the

input sprocket

by

the spring clutches. The third and fourth

sets

of

gears provide speed reductions since13andLAare deenergized and the associated clutches are kept from rotating by the released plungers. Power thus flows through

all

the gears in these two gear sets.

4-35. Paper

Feed.

4-36.Asshown in Figure 4-9, a paper brake arm establishes tension across the felt-covered paper brake bar. From the outputofthe gearbox, a chain drive runs a rubber drive roller. The drive roller pulls the chart paper at a uniform speed, slippage being prevented

by

a pressure roller

that causes the papertogrip the drive roller. After the Z-fold paper leaves the drive roller, it folds sheet

by

sheet

onto

a

takeup tray provided with the bench-top enclosure, or into

a takeup tray provided with the system cabinet or portable cart. The consecutively numbered chart pages indicate the

amount

of

paper remaining, and can be usedasan index for

instant access

to

any partofthe recording.

4-37. RECORDER POWER SUPPLY

AND

REGULATOR

CIRCUITS.

4-38. The power supply contains rectifier and regulator cir-

cuits, a 200 kHz oscillator for the galvanometer position feedback circuit, and may have transducer-excitation oscil-

lators (2400

Hz

or 440 Hz) for the input circuitsofsome

preamplifiers. Connections for these oscillators are shown

in Figure 4-2, and the rectifier and regulator circuits are

shown in Figure 4-10. In the figures, some elements such

as

current regulating circuits, bypass and suppression net-

works, some ground connections, minor feedback loops, ftlters, and coupling elements are omitted. Refer to Section

VI

for complete schematic diagrams.

4-39. Recorder DC Power Supplies.

4-40. The Recorder power supply rectifiers provide +20 volts,

-20

volts and

-24

voltsdcas

unregulated control

and heat supply voltages. The voltages are

fJ.1tered

and fused

on the power supply chassis,

as

shown in Figure 4-10.

DRIVE ROLLER

PRESSURE

ROLLER

PAPER

GUIDE

PAPER

TABLE

BRAKE ARM

FEED TRAY

PAPER

BRAKE BAR

PAPERINTAKEUP TRAY

OR

DRAWER-

_

Figure 4-9. Paper Feed Path

07754-1

4-9

Section

IV

PrinciplesofOperation

Model 7754A/7414A

POWER

SUPPL

V

A3

P8

J5

LINE POWER INLET

AUX PWR OUTLET

F1

F2

115/230

VOLT SELECTOR SWITCH

S4

T1

CR5

24VAC 50

HZ OR 60

HZ

+20V

-20V

-24V

:::}GROUND SIG

PWR

~~rn~------------------------------R~W~~W~

,

REGULATOR

R15

AS

(60

HZ)

ORA9(50

HZ) I

J

6-12V

MARKER HEAT

10

ELEMENT

CONNECT TO

REAR PANEL JACK

J17

5

+12V

2

-24V

OSCILLATOR

L

OUTPUT

MARKER

9

COIL

7

+5V

GROUND FOR

MIN

F

GROUND FOR

SEC

t

I

200

KHZ

I

OSCILLATOR

I

-12V

, ...

L-'-;;;..;;;;.-.;;;-'""""'II~"-==t=-

....

L _

-12

VOLT

REGULATOR

R12,

R13

R3

R25

R27

I

+20V

I

R28

I

I L_____ I

L

N~~~~=~~~~~

+20V

4

-20V:.!

f--+--------------JlJ.,.,-......Il

R5

-24VAC TIMING

I

INPUT

REF GROUND

B

f--+--

....~..

-4

.....

---W'¥--+--i

HEAT

CONTRO

L H

f--+-JI,1I/'1r---4~--+-t

IN

Figure 4-10. Recorder Power Supply

and

Regulator Circuits,

Simplified

Circuit

07754-1

4-10'

Model 7754A/7414A

4-41. Regulator/Oscillator.

442.

The Regulator/Oscillator Assembly includes a +5V, a

+12V and a

-12V

voltage regulator, a 200 kHz oscillator with a stabilizing regulator, and the timing circuits for the timed marker stylus. The relationship

of

these circuits

is

shown in Figure 4-10.

443.

+5-VOLT REGULATOR. The+5volt regulated sup-

ply

is

used in the timing generator, and in the signal inter-

ruption circuit

of

each driver amplifier. Itisderived from the +20 volt unregulated supply with an integrated circuit voltage regulator

that

has an independent voltage reference.

A resistor in series with

the

regulator absorbs someofthe power dissipated in the regulation process, thereby reducing the amount

of

heat generated in the regulator.

444.

+12-VOLT REGULATOR. The +12 volt supply

is

derived from +20 volts with an integrated circuit regulator

used

as

a regulator-driver. Since theICis

not

capable

of handling the required power, an external power transistor, Q6, acts

as

the

series regulator. TheICregulator incorpor-

ates a ±5% voltage reference. To adjust the voltage (within

100 millivolts), the circuit uses potentiometer R2

to

reference ground. Resistor R15, one ohm in series with regulating transistor Q6, provides short circuit protection and has a current-sensing function. R4 and

Cl

form anRCnet-

work

that

improves the stabilityofthe operational ampli-

fier

that

drives Q6.

445.

-12

VOLT REGULATOR. The

-12

volt supply

is

derived from the

-20

volt unregulated

output.

The

-12 volt regulatorisanother operational amplifier, with the driven, series regulating element

as

Q5. Q1 and Q2 are the

differential components

of

the

amplifier. Q1 base

is

returned to ground

via

R5, and the reference

input,

derived

from

-12

volts through R12 and R13,isconnected to Q2.

The amplifier

output

drives Q5, andisreturned to the

refer~

ence input

via

feedback resistor RIO. Current limiting

is

provided by R8 and Q4

(not

shown in diagram), and

RC

network R6,C3aids stability.

446.

200 kHz OSCILLATOR. The high frequency excitation signal, used in the galvanometer position capacitive transducer,

is

generated by

L-C

Oscillator Q9 and its associated circuitry. Random conductance in Q9 sets up currents in

Tl

which are fed back, in phase,tothe baseofQ9

through

CI3.

Since feedback is greater

than

unity gain,

oscillation amplitude

is

controlled only by saturation

of Q9, and reaches nearly the power supply voltage. Oscillator frequency

is

determinedbyC15 and the external loading

capacitance across

the

transformer primary together with

Tl

inductance. Filter choke

Ll,

with C14

(not

shown),

decQuples the oscillator and its harmonics from the

-12

07754-1

Section IV

Principles

of

Operation

volt supply. A step-up winding, connected to

CI8,

increases

the oscillator

output

voltagebyabout 7 to 1.

4-47. OSCILLATOR REGULATION CIRCUIT. Since the position transducers are an

important

factor in recorder

accuracy,

the

200 kHz oscillator must remain extremely

stable in operation. An indication

of

oscillator stability,

both

in frequencyofoscillation and ill amplitude, can be

obtained by detecting

the

productoffrequency and

output voltage, and comparing the results with a reference voltage. The

L-C

oscillator circuit,

by

nature, exhibits frequency changes with variations in load. The oscillator regulation circuit varies

the

oscillator supply voltage to compensate

for loading, which stabilizes the

output.

4-48. To do this, the oscillator

output

detector generates a

voltage proportional to frequency and amplitude

of

the

200

kHz component being removed by C11. This voltage

is compared in differential amplifier U2 to a reference voltage (+4.23 volts), derived from the +12 volt supply through voltage divider

RI8-RI9.

The comparator

output

drives a

series regulator transistor, part

of

U2, in such a way

that

the oscillator will maintain a constant

output

amplitude,

and therefore a constant frequency.

4-49. Marker Circuits.

4-50. The Recorder includes two monopolar markers, one of

whichistimed, and the other actuated with a front panel or remote pushbutton. The timing circuits for the timed marker are located on the Regulator/Oscillator Assembly, and operate by dividing 50 or 60

Hz

ac input to generate

one-second pulses, and

then

dividing these pulses to obtain

pulses at one-minute intervals. The selected set

of

pulses

is

then

amplified to drive

the

timed marker.

4-51. Line frequency ac voltage

at24Vacisobtained from

the power transformer and filtered

to

remove transients and high-frequency noise. Then a threshold detector circuit, QI3-QI4,

generates a trainofspike waveformsatline frequency to drive the divider TTL logic circuitry. Integrated circuit

U3

divides by 5 or 6, and then U4 dividesby10 to

achieve a 50: I or 60:1 division. The seconds

output

is routedtoswitch Q16, and alsotothe minutes divider, which divides by 60 in the same way, using IC's

U5

and U6.

The minutes

outputisrouted to transistor switch Q15.

4-52. MARKER SWITCHES. When the circuit

is

off,

both

switches are grounded, stopping conduction in

QI5

and Q16 and permitting Q17 to conduct steady-state. When either minute or second marking

is

selected, the ground

is removed from one switch, which conducts and connects the base

of

Q17 to ground. Once each minute or second, the

timing circuit cuts

off

the switch, thereby restoring the base

4-11

Section IV Principles

of

Operation

Model 7754A/7414A

drive to Q17 momentarily, so the marker coil is energized and the marker makes a jog on the paper. The diode at the collector

of

Q17 removes the large transient

that

results

when the marker solenoid stops conducting.

4-53. MARKER HEAT DRIVER. The marker heat

ele-

ments are powered from the

-20

volt unregulated line.

Heat regulation originates at the heat potentiometer sub-

assemblyofthe front panel, andisapplied to the base

of

Q10, which drives Q12, a series regulator

thatissimilar to

the voltage regulator circuits. Circuit feedback

is

applied for

stability, and the circuit

is

protected against a shorted out-

put by current limiter

Qll

(shown in Figure 6-15).

~54.

440 Hz Oscillator.

4-55. The 440Hzoscillator circuit (Figure 4-11) consists

of oscillator printed circuit assemblyA2and associated power regulation·circuits on the power supply chassis. Power for the oscillatorisregulated byQ2andQ3from

the

-20

volt

oscillator supply (refer to Figures

24

and 6-7) on the Pre-

amplifier Power Supply Assembly. The reference voltage

is

obtained from the

-12

volt supply. Voltage divider

Rll

and R13 senses any change in the

outputofregulator Q3.

The change

is

sensed by regulator driver QI andisapplied

to

the baseofQ3toreturn the

outputtoits former level.

4-56. Oscillations generated by push-pull oscillator

QI2, Q13 are frequency stabilized by capacitor CIS and the primary windings

of

transformer T4, which together form a

tank circuit in the oscillator output. Output from the

secondary

ofT4is

controlled in amplitudebydiodes CR21 and CR22 at a level determined by breakdown diode CR23. Each sideofthe T4 secondaryisconnectedtohalfofpushpull power amplifier Q4,

Q5

to drive

output

transformer

TI.

The

outputofT1isdistributed to the preamplifier

connectors and the auxiliary power

output

connector

as

shown in Figure 4-2.

~57.

2400 Hz Oscillator.

4-58. The 2400Hzoscillator furnishes a transducer excitation signal

to

pressure amplifiers suchasthe Model 8805A or 8805B. The preamplifier further amplifies the excitation voltage for use with a transducer. Power for the oscillator (Figure 4-12)

is

provided by the

-20

volt oscillator supply

through series regulator Q19. The base

of

QI9isheld at a

regulated

-12

volts from the preamplifier regulated supply,

providing collector voltage

to

Q20 and

Q21

through the

primary

of

T7. This voltageisfJltered by capacitor C21.

4-59. Oscillations generated by push-pull oscillator Q20, Q21

are frequency stabilized at 2400Hzby the primary

of

oscillation transformer T7, which, with the capacitance

of

CI8

and C19, forms a tank circuit across the oscillator

output. Thermistors

RTI

and RT8 provide temperature

stability. The

outputofT7isa 2400Hzsine wave balanced with respect

to

ground, with diodes CR25 and CR26 con-

trolling the oscillation amplitude

at

a level determined by

CR24. The differential signal

is

distributed to all channels

and auxiliary power

output

connector J8.

j

1-----------;;7-----

1

E

R=

019

6800

I

I RT7 I

FIT

I

J I • R421

If-

(7)

470

I

If-

R~I

II

470

I

If-

I

C I I

L -

e21 R39 I

I -

.0056

6800

1

---------_-1

868-500A-CI3 2400",

OSCILLATOR

P.C.

BOARD

ASS'y

If-

I

II

f-

CR22 I

l I

lS:-1

10

+ I

50V

'-'-----"\Mr-~

L

~

868-500A-CI4 440'"

OSCILLATOR

P.C.

BOARD

ASS'Y

1-

- - - -

--

- - -

---

- - -

~

cr(='

01

R26 1

8 I

'=

-16V

1800

I

R23 1

I

1800

J

CR21

I

If-

R27 I

IK

Figure 4-11.

440

Hz Oscillator

Circuit

Figure 4-12.

2400

Hz Oscillator

Circuit

4-12

07754-1

Model 7754A/7414A

SECTION V

MAINTENANCE

Section V

Maintenance

5-1.

INTRODUCTION.

5-2. This section provides maintenance and service information for the Hewlett-Packard 4-Channel Thermal Tip Recorder. Information includes:

required. Other test equipment may be used

if

its specifi-

cations equal those listed.

For

satisfactory performance, use only the lubricants listed in Table 5-2. Lubrication intervals are

as

follows:

Performance Checks Preventive Maintenance Adjustments and Minor Repairs Overhaul and Lubrication (Gearbox)

Paragraph 5-5. Paragraph 5-10. Paragraph 5-20. Paragraph 5-49.

Normal use in upper half

of

the

speed range:

12 months or 2000 hours.

Slow speed use, over extended periods:

6 months or 1000 hours.

For further information, refer to Paragraph 5-49.

For system troubleshooting information, refer to Table 5-3.

5-3. TEST

EQUIPMENT

AND

LUBRICANTS.

5-4. The test equipment recommended for maintenance

is

listed in Table 5-1, with the performance characteristics

5-5. PERFORMANCE CHECKS.

5-6. The performance checks verify specifications and cir-

cuit operation, and can be used under the following circumstances:

I

I I

Instrument Type

Variable Autotransformer

OCVTVM

Digital Voltmeter (DVM)

Function Generator

Oscilloscope

Stylus Pressure Tester

Test Boards

Test Cable

Oscillator Load Plug

07754-1

Table 5-1. Recommended Test Equipment

Required Characteristics

115or230

Vac; 0-130 Vac, 5 amperes;

0-260 Vac, 2.5 amperes

1 mV to 1000V full scale, 1 rnA to 1 ampere

Range: 0-999.9V; Accuracy: ±0.05%

0.01 Hz -

100

kHz 35V p-p open

circuit

output;

15V p-p into 600-ohm

load

Sensitivity 5 mY/division or better. Vertical amplifier dc coupled,

dc

to

400

kHz or

better

25 grams maximum

PC

Board

Support

for Driver and

Regulator

/0scillator

Driver Amplifier Extender Board Regulator/Oscillator Extender Board

For test signals

To

load

oscillator

Model Number

of

Instrument

Recommended

General Radio VARIAC

HP Model

412Aorequivalent

HP Model

3440A

or equivalent

HP Model

3300A

with Model 3301A Auxiliary Plug-in. Used with dualbanana

to

BNC

adapter HP 10110A.

HP

Model 140 with Time Base and

any 1400-series Vertical Amplifier.

HP

Part

o. 14023A or equivalent

07754-00900 (Figure 5-2)

07754-00920 07754-00910

To be made; see Figure 5-2

5-1

Section V Main tenance

Table 5-2. Lubricants and Solvents Required

Model

7754A/7414A

5-12. Operational Checks and Inspection

Type

MACHINE OIL,

0.10

GEAR

GREASE

CHAIN GREASE

PENETRA

TI G

OIL

SOLVE

T AND

CLEA

ER

Commercial

Source

or

Hewlett-Packard

Part No.

6040-0220

6040-0222

6040-0223

Commercial, such as Marvel Mystery Oil

DOW CWorothene (l,I-Inhibited TricWoroethane)

5-13. Switch Recorder

power

OFF.

Inspect

the

Recorder for evidenceofmechanical or electrical overload, dents, rust,

and

corrosion. Check

that

all

components

are securely

mounted,

including

the

cable connectors. Also

check

exter-

nal

connecting

cables for strain, breaks,

and

frayed insu-

lation.Ifthe

Recorder is installedina

cartorcabinet,

the

cables should be free when

the

Recorder is

movedinand

out.

WARNING

TO PREVENT PERSONAL INJURY IF RECORDER

SHOULD SLIDE PARTLY OUT, KEEP RECORDER

ATTACHED TO CART

OR

CABINET WITH SCREWS

IN

FRONT PANEL

AT

ALL TIMES EXCEPT DURING

MAINTENANCE.

5-14. Operate the

Recorder

in all speed ranges,

and

perform

the

operating

procedure,

using all

controls

listed in Figure

3-1.

a.

As

partofan incoming inspection;

b. Periodically, where

maximum

reliability is required;

c. To

troubleshoot

malfunctioning circuits;

and

d. After repairs or adjustments.

5-7. To facilitate checking

the

Driver Amplifiers

and

the

Regulator/Oscillator Assembly,

extender

boards (Table 5-1)

are availableasaccessories.

5-8. Variable Line Voltage.

5-9. During

the

performance

checks,

the

Recorder

should

be

connectedtothe

power

source

through

an adjustable

autotransformersothe

line voltage can be changed ± 10%

from

the

nominal 115or230

Vac.

CAUTION

TO AVOID DAMAGE, REMOVE POWER FROM THE

RECORDER BEFORE DISCONNECTING ASSEMBLIES

OR COMPONENTS.

5-10. PREVENTIVE MAINTENANCE

5-11. Preventive

maintenanceisrecommended

every six

monthsor1000

hoursofoperation

andasan aid for

minor

repairs,

adjustments

and

troubleshooting.

5-2

5-15.

The

following steps

check

operationofthe

Recorder:

a. Recorder slides: Check

that

the

slides rollinand

out

smootWy

and

that

they

lockinthe

full

open

position

(Figure 2-1).

b. Paper tension:

Run

the

Recorder

at

the

highest

speed,

and

inspect

paper

travel over

the

platenatthe

paper

table (See Figure 4-9). The

paper

should travel snugly over

the

paper

table. Adjust

the

paper

brake (paragraph 5-24)

if

necessary,orclean or replace

the

brake

felt (Paragraph

5-27).

c. Paper tracking:

The

paper

brake should be slightly

tighteratone side or

the

othersothe

paper

will

track

consistentlytothe right

and

not

weave

back

and

forth.

Run

approximately

5 feetofthe

chartat25

mm/sec.

Marker

styli are normallyina fixed position

between

channels.

Remove

the

record

and

measure

the

distance

between

the

marker

trace

and

the

edgeofthe

chart

paper.

The

measure-

ment

should

be consistent within ± 0.5

mm

all along

the

lengthofthe

record.

Repeat

this

procedureatthe

100

mm/sec speed.Ifthe

paper

weave exceeds

the

limit, loosen

the

left

paper

brake

adjustment

screw slightly (Figure 5-1).

If

adjustment

is difficultorif

tracking problems persist, see

Paragraph 5-24.

d. GalvanometertoPaper Parallax: So

that

all channels

will have

the

same time reference

with

respecttothe

paper,

all stylus tips

must

fall on

the

same time reference line

of

the

paper,±0.25

division.Tocheck

parallax,

apply

power

to

the

Recorder,

and

settoSTANDBY

mode.

With finger

pressure, gently move

the

stylus

off

center

full scale, in

the

07754-1

IModel 7754A/7414A

Section V

Maintenance

MARKER

COIL

LEADS

(TYPICAL)

+12V

ADJUSTMENT

DRIVER

AMPLIFIER

GAIN

440 HZ

OSCILLATOR

OUTPUT

ADJUSTMENT

CH3CH

4

y

STYLUS POSITION

TEST POINTS

F6,

2400 HZ OSCILLATOR

-20V

POWER

MARKER

HEAT

LEAD

PLUG

-12V

+12V

R13,

RIGHT,

DOWNSCALE,

OR LOW

LIMIT

R3Q,

DAMPING-2QV

+2QV

R9,

LEFT,

UPSCALE, OR

HIGH

LIMIT

STYLUS

AND

GALVANOMETER

MECHANICAL

ADJUSTMENTS:

REFER TO FIGURES

5-7

AND

5-8

PAPER BRAKE ADJUSTMENTS

Figure 5-1. Test

and

Adjustment

Points

07754-1

5-3

Section V Maintenance

positive and negative directions. The trace line over the width

of

each channel should be ± 0.25 mm;ifnot, see

Paragraph 5-33 to adjust stylus parallax. The time reference with respect to paper (full chart width or four channels) should be within

± 0.25 mm.

If

not,

refer to Paragraph 5-34

for the channel time synchronization procedure, which

is

used to adjust galvanometer parallax.

e.

Signal Styli: Inspect each signal stylus for cleanliness

and condition.

If

a stylusisbent

or twisted, replaceit(Para-

graph 5-35).

f.

Stylus Pressure: When stylus pressure

is

too

light, the

trace lacks definition,

but

when pressureistoo

heavy, friction causes noticeable non-linearity and hysteresis. Refer to Paragraph 5-31 for stylus pressure adjustments.

g.

Marker Styli: Inspect each marker stylus and solenoid

for cleanliness and condition. Run a few feet

of

paper

at

100 mm/sec while pressing

the

EVENT MARKER

button,

Model 7754A/7414A

and with the timed marker in

SEC

mode.Ifthe recording

is unsatisfactory, check the marker stylus electrical connections and pressure (Paragraph 5-57). Recheck marker performance.

If

still unsatisfactory, troubleshoot the marker

heat circuit, or replace the marker stylus.

h.

Stylus Heat: Turn Recorder power ON, set SPEED

to

25

mm/sec, and adjust STYLUS HEAT controls for best trace definition. Unlatch the Recorder (or raise the portable case lid), and rotate each preamplifier POSITION potentiometer (Figure 5-1) from one extreme

to

the other. Trace definition should remain the same over the whole channel width.

If

not,

first check for an unlapped stylus. Then

check for defects, improper clamping (paragraph 5-29), or

poor stylus pressure.

i. Electrical Checks: The electrical checks include

adjustment

of

the electrical and mechanical limiting

of

stylus deflection.

See

Table 5-3.

Table 5-3. Electrical Performance Checks

and

Adjustments

A. UNREGULATED POWER SUPPLY CHECK

a.

Push recorder POWER ON-OFF switch soitpops

out

(OFF).

b. Remove protective cover from 18 REMOTE to

gain access to

PC

board connections.

c. Insert connector body 1251-1190

into

18 to

provide test points.

d.

Remove

jumper

cable (07754-60450) from

131-132.

e.

Connect function generator (Table 5-1)

to RECORDER INPUT connector 132 through signal test cable.

f. Connect system

to

variable autotransformer (VARIAC). Set dial to 115 Vac, and push recorder POWER switch to

it

stays in (ON).

g.

Set function generator for 0.1 Hz square wave. Set amplitude dial fully counterclockwise

(CCW).

h. Rotate all stylus

heat

controls fully clockwise

(CW).

i. Set Recorder speed to 2.5 MM/SEC.

j. Set MODE switch to RUN. k. Adjust function generator amplitude control so

stylus motion covers complete

chart

width.

1.

Connect digital voltmeter (DVM) between Pin

1 (+20 volts) and Pin

11

(power ground)of18,

and observe the following voltages

on

DVM:

(1) All styli

at

topofchart,

about

+18 volts.

(2)

All

styliatbottomofchart,

about

+20

volts.

Note:

Top

of

chart istoleft.

m. Connect

DVM

between Pin D

(-20

volts) and

5-4

Pin11of

18, and observe following voltages on DVM: (1) All styli at top

of

chart, about

-20

volts.

(2) All styli

at

bottomofchart,

about

-18

volts. n. Set MODE switch to STDBY. o. Lower paper table. p. Set MODE switch to RUN and SPEED switch

to

100

MM/SEC.

q. Connect

DVM

between Pin E

(-24

volts) and

11of18.

DVM

should read

-24

volts dc.

L Set Function Generator amplitude control fully

CWo

S. Press interlock switch (Figure 5-14), located

under paper table.

DVM

should read about

-22.5

volts.

t. Set MODE switch to STDBY.

U.

Push paper table up and inatbottom

so

it

locks in to place.

B.

440

HZ OSCILLATOR ADJUSTMENT. This pro-

cedure

is

to be performed onlyifthe Option 005

Oscillator

is

installed.

a.

Push Recorder POWER switch soitpops

out

(OFF).

b. Connect oscillator load plug,

to

oneoffour

preamplifier connectors,

inside the preamplifier

housing (11,

12,

13 or 14).

C.

Push POWER switchsoit

stays in (ON).

d.

Connect scope between Pin A (440Hz) and Pin

11of18.

e.

Adjust

440

Hz voltage

output

control RIO

07754-1

Model

7754A/7414A

Table 5-3. Electrical Performance Checks

and

Adjustments

(cant.)

Section V

Maintenance

(Figure 5-1) for an

outputof14.0 volts p-p

on

scope.

C.

2400

HZ OSCILLATOR CHECK

a.

Connect scope between Pin 2 (OSC

"B")

and

Pin11of

J8;

scope should read about 17.0

volts p-p.

b.

Connect scope between Pin 3 (OSC

"A")

and

11ofJ8;

scope should read

about

17.0

volts p-p.

c. Set Recorder POWER switch to

OFF.

d.

Remove

input

cable from function generator,

oscillator load plug, scope leads, and remove

connector

body

fromJ8REMOTE. Reinsert

protective cover

into

J8.

e.

Reconnect

jumper

cable on recorder rear panel.

D. REGULATOR/OSCILLATOR BOARD CHECK

AND ADJUSTME T.

ote:

Regulated vol tages

under

test are loaded

with preamplifiers installed in

the

recorder.

1.

+12 Volt Regulator Check and Adjustment.

a.

Set

Recorder POWER switch to

OFF.

b.

Remove Oscillator/Regulator Assembly.

c. Install

extender

board 07754-00910

and

test fixture

07754-00900onthe assembly,

as

shown in Figure 5-3.

d.

Install

extender

board with regulator/ oscil-

lator

and test fixture

into

Recorder 117.

e. Set Recorder SPEED switch

to

2.5 MM/

SEC,MODE switch

to

STDBY, and POWER

switch ON.

f.

Connect

DVM

between

TPI

(+12 volts dc)

and

power

ground.

g.

Set

MODE switch to RUN.

h. Position all styli

to

center scale with POSI-

TIO

controloneach preamplifier.

i. Set MODE switch to STDBY.

j. Check

DVM

for reading

of+12.0

volts dc ±30mV.Ifreadingisbeyond tolerance, adjust

potentiometer

R2 (Figure 5-4) for

+12.0

voltsdc±30

mY.

k. Change

input

voltage with Variac (Table 5-1)

to 103 Vac and 127 Vac.

DVM

reading must

not

vary more than

±30

mY.

1.

Return

Variacto115 Vac setting.

m. Disconnect test cable

at

DVM

and

connect

it

to scope.

n. Set scope I PUT

to

AC, SWEEPto5 MSEC/

CM, and SE S to 5 mV/CM.

o. Ripple observed

on

scope

must

not

exceed

5

mV

p-p.

07754-1

p. Disconnect cable from scope and reconnect

cable

to

DVM.

2.

-12

Volt Regulator Check.

ote Only the +12 volt regulator circuit is adjustable. The

-12

volt regulator uses +12 vol ts

as

a reference.

a.

Connect

DVM

between TP2

-12V

dc and

power ground. The

DVM

must

read

-12.0

volts dc ±0.1 vol

t.

b.

Change

input

voltage with Variac to 103 Vac

and 127 Vac. Reading

on

DVM

must

not

exceed tolerance.

c.

Return

Variac to 115 Vac.

d.

Disconnect cableatDVM, and connect it to scope.

e. Set scope I PUT

to

AC, SWEEPto5 MSEC/

CM,

and

SE S to 5 mV/CM.

f.

Ripple observedonscope

must

not

exceed

5

mV

p-p.

3.

200 kHz Oscillator Measurements.

a.

Remove standard probe (1:1 probe) from scope, and

connect

10:1 probe.

b.

Set

scope controls as follows:

Switch Position INPUT

AC SWEEP 2 uSEC/cm SE S 10V/cm

c.

Connect

scope between TP3

(200

kHz) and

oscillator ground. There are other TP3's

on

other

boards; this oneisshown in Figure

6-15.

d.

Scope

must

show a

patternasin the following

photograph.

e. Remove 10: 1

probe

from TP3 and from scope.

5-5

Section V Maintenance

Table 5-3.

Electrical

Performance Checks

and

Adjustments

(cant.)

Model 7754A/7414A

d.

Connect scope between TP6 and power

ground.

e.

Set scope controlsasfollows:

Switch Position

f.

One pulse should appear on the scope every second (centimeter on the scale),

of

about

+3.0V

POp.

g.

Connect scope between TP7 (Figure 5-4)

and power ground.

h. Set scope SWEEP switch to 5 SEC/CM.

i.

One pulse should appear every minute on scope +3.0V

pop.

j. Set recorder POWER switch to OFF.

k. Remove extender board, Regulator/Oscilla-

tor board and support from Recorder. Remove extender and support from board.

1.

Reinstall Regulator/Oscillator board into Recorder 117

if

satisfactory, otherwise make

necessary repairs and retest.

E.

PREAMPLIFIER POWER SUPPLY ASSEMBLY ADJUSTME TS (07754-60140)

1.

Position Control Adjustments.

ote CHA POS controls are only for trimming channels.

To

position stylus during

operation, use preamplifier POSITIO

control. a.

Remove small cable from rear panel

of Recorder (07754-60450), to disconnect preamplifier signals from Recorder input.

b.

Set Recorder SPEED switchto2.5 MM/SEC.

c.

Set MODE switchtoRUN.

d.

Adjust

Channell

position (CHAN POS 1)

control on preamplifier power supply board

to its complete range. Stylus 1 should be able

to be positioned over

±10 divisions each side

of

center.

e.

Position stylus 1 to centerofchart

Channell.

f.

Repeat steps d and e for Channels 2, 3, and 4.

g.

Set MODE switch to STDBY position.

2.

Gain

Control Adjustments.

a.

Reconnect signal test cable (shown in Figure

5-2) to J32, and connect the dual banana plug

toDCStandard 741 (Table 5-1), OUT-

PUT.

b.

Set

outputofdc

standardto0 volts.

c.

Set MODE switch to RUN, on 7754A Recorder.

4.

Input to Timing Generator.

a.

Reinstall1:1 probe on scope in placeof10: 1

probe.

b.

Set scope controls sameasin Step 3 except SWEEP

to

10 mSEC/cm.

c.

Connect scope between TP4

(24

Vac,50Hz

or

60

Hz),

and power ground.

d.

Scope must show patternasin following

photograph.

e.

Remove scope probe from TP4.

\ "

\"

,1\

I

V

.

V

·

'."

/

V . V

lJ

5.

OutputofTiming Generator.

a.

Set scope controlsasfollows:

Switch Position INPUT

DC SWEEP 5 mSEC/cm SE S 2V/cm

b.

Connect scope (1: 1 probe) between TP5 (collector

of

Q14) and power ground.

c. Scope must show a pattern

as

in following

photograph:

INPUT SWEEP SENS

AC

1 SEC/CM

2V/CM

j

1

5-6

07754-1

Model 7754A/7414A

Table 5-3. Electrical Performance Checks

and

Adjustments

(cant.)

Section V

Maintenance

I I

I

d.

Setdcstandard

outputto+2.5V dc. All styli

should move upscale

(to

left).

e.

Adjust all GAl controlsonPreamplifier Power Supply board to set all styli accurately

to 25 divisions deflection

(top

lineonchart).

f.

Resetdcstandard ou tputto0 vol

ts.

g.

Repeat steps c, d, e, and f until an accurate 0 to 25 divisions gain

is

obtained.

h. Set Recorder MODE switch to STDBY.

i.

Disconnect dual banana plug from dc standard.

F. STYLUS MECHA ICAL LIMIT ADJUSTME T

a.

Connect dual banana plug on RECORDER

INPUT TEST CABLE

to

Function

Generator

through

HP

dualtoB C adapter 1011

OA.

b.

Set

Function

Generator frequencyto1 Hz, and

output

to triangular waveform.

Set

amplitude

control to 5.0V p-p.

c. Set Recorder MODE switch to RU .

d.

Adjust LIMIT controls

(R9

and

R13,

Figure

5-1

inset) on each Driver Amplifier board fully

clockwise, to cause all styli to travel

at

least 2.5

divisions beyond chart channel edge.

e.

Adjust

Channell

right and

left

bumpers

to

limit travelofstylusto2.5 divisions

beyond

top

and

bottom

lineofchart channel.

f.

Repeat Step e for Channels 2,3,and 4.

ote

Stylus travel beyond the edge

of

the chan-

nel grid

must

not

interfer with any adjacent channel stylus or marker stylus when styli are

at

maximum excursion toward each

other.

G.

DRIVER AMPLIFIER ASSEMBLY ADJUST-

MENTS

1.

Electrical LimitingAdjustment.

a.

Adjust

Channell

LIMIT L control

(R9,

Figure 5-1)tolimit

stylus travel to 1.5 divi-

sions

beyond

top lineofchart

(turn

ccw).

b.

Adjust Channel 2 LIMIT R control

(RI3, Figure 5-1) to limit stylus travelto1.5 divisions

beyond

bottom

lineofchart

(turn

ccw).

c.

Repeat Steps a

and

b for Channels 2,3,and 4.

d.

Turn amplitude controlofFunction

Generator

ccw so stylus travel stops

at

last grid line

of

chart

top and

bottom.

Triangular waveform

must

not

limitateither top or

bottom

of

chart.

e.

Set MODE switch to STDBY.

07754-1

2.

Damping Adjustments.

a.

Push Recorder SPEED

button

for10MM/

SEC speed.

b.

Adjust

Function

Generator

output

to 1 Hz

square wave.

c.

Set Recorder MODE switchtoRUN.

d.

Adjust

Function

Generator amplitude con-

trol

to

produce a20division deflection on

Recorder chart.

e.

Adjust

Channell

DAMPI G

control

(R30,

Figure

5-1

inset) so overshoot on chart does

not exceed 0.8 division.

f.

Set MODE switch to STDBY.

g.

Set

Function

Generator

outputto5 Hz sine

wave.

h. Set MODE switch to RU .

i. Adjust

Function

Generator amplitude

control

to produce full-scale

(50

division) deflection

on chart.

j. Set

Function

Generator

outputto50

Hz sine

wave; stylus deflection

must

be no less

than

45 divisions.

k.

Set MODE switch to STDBY.

1.

Repeat steps b through k for Channels2,3, and

4.

3.

Frequency Response Check.

a.

Set

Function

Generatorto10Hz

sine wave.

b.

Push Recorder SPEED

button

for10MM/

SEC speed.

c.

Set

MODE switchtoRU .

d.

Adjust

Function

Generator amplitude

control

for a10division stylus deflection.

e.

Set

Function

Generator

outputto100

Hz

sine wave.

f.

Stylus

must

deflect

7.07

divisions (3dBdown)

on chart.

g.

Set MODE switch to STDBY.

h. Repeat steps a through g for Channels

2,3,

and 4.

4.

Linearity Check.

a.

Set

Function

Generator

outputto0.1 Hz

triangular waveform.

b.

Push Recorder SPEED

button

for10MM/

SEC speed.

c.

Set MODE switchtoRU .

d.

Adjust

Function

Generator amplitude for

full-scale stylus deflection.

e.

Stylus must show less than ±0.25 division deviation from straight line.

f.

Set MODE switchtoSTDBY.

5-7

Section V Maintenance

Table 5-3. Electrical Performance Checks

and

Adjustments

(cant.)

Model

7754A/74l4A

5.

Signal Waveform Measurements.

a.

Press Recorder POWER switch to remove power (OFF).

b.

Remove Driver Amplifier Assembly (07754-

60170) from channel to be tested.

c.

Install extender board (07754-00920) and plastic support (07754-00900) on Driver Amplifier Assembly.

d.

Install extender board, with Driver attached, to Recorder connector from which Driver was

removed.

e.

Press Recorder POWER switch to apply power

(0

).

f;

Adjust Function Generator

outputto50

Hz

sine wave.

g.

Set scope controlsasfollows:

Switch Position

Scope must show pattern same

as

"B"

in

following photo:

j

h. Connect scope between

TPI

(Figure 5-5)

and signal ground.

i.

Push Recorder SPEED

button

for 2.5 MM/

SEC.

j. Set MODE switch to RUN.

k. Adjust Function Generator amplitude for full

scale stylus deflection.

1.

Scope must show a patternasin the following photograph:

q.

Turn Function Generator amplitude control

to produce full scale deflection on chart without

limiting.

r. Set Recorder MODE switch

to

STDBY.

s.

Connect scope between TP3ofDriver Amplifier and signal ground, and set Scope controls as

follows:

INPUT SWEEP

SENS

AC

5 MSEC/CM

0.5V/CM

Switch INPUT

SWEEP SENS

Position

AC 5 MSEC/CM

lV/CM

j

5-8

m. Connect scope between TP2 and signal

ground.

n.

Set scope SE S control to 10V/CM.

o.

Scope must show pattern sameas"A"

in fol-

lowing photo.

p. Turn Function Generator amplitude control

clockwise to cause limiters to limit signal.

Scope should show pattern

as

in following

photo:

t. Connect scope between TP4 and signal ground,

and set scope SENS to 5V/CM. Scope must show pattern

as

in following photo:

07754-1

Model

7754A/7414A

Table 5-3. Electrical Performance Checks

and

Adjustments

(cont.)

Section V

Maintenance

I I

I

u. Connect Scope between TP5 and signal ground,

and set scope

SEScontrol

to 1V/CM. Scope

must show

patternasin following

photo:

v.

Set MODE switchtoSTDBY and remove test cable from 132 on rear

of

Recorder.

Reconnect

jumper

cable 07754-60450 to 131 and 132.

6.

Driver Heat Control Amplifier Check

a.

Connect Digital Voltmeter (DVM) between TP6 (Figure 6-13) and power ground.

b.

Set

all Recorder STYLUS HEAT controls

fully clockwise.

c. Push Recorder SPEED

button

for .25 MM/SEC

5-16. Cleaning.

5-17. Depending on environmental conditions, cleaning may be required at

much

shorter intervals

than

the regular

maintenance intervals:

a.

Unplug Recorder power cord. Remove

chart

paper.

Expose

top

and rearofRecorder, and remove dust with a

vacuum hose.

b. Clean Recorder and Preamplifier front panels and

controls with a soft, lint-free

cloth

or a wax-impregnated

polishing cloth.

CAUTION

IF

A

SOLVENT

IS NECESSARY TO

CLEAN

THE

PANEL,

USE

ONLY

CHLOROTHENE

OR

ETHYL

ALCOHOL.

OTHER SOLVENTS, SUCH AS ACETONE

OR ISO-PROPYL

ALCOHOL,

MAY

REMOVE

PANEL

PAINT

OR

MARKINGS.

IF

THE

PANEL

MUST

BE

MARKED,

FOR INSTANCE WITH

CHANNEL

IDEN-

TITY,

USE

ONLY

CHINA

MARKING

WAX

CRAYON,

OR

COLOR-CODED

EMBOSSING TAPE. DO

NOT

USE

07754-1

and set MODE switch

to

RUN.

d.

Push Recorder SPEED

buttons

in sequence,

and observe following readings on DVM; return

MODE switch

to

STDBY for last reading:

SPEED SPEED

MM/SEC

DVM

MM/SEC

DVM

.25

-6.4

Vdc

10

- 8.4 Vdc

.5

-6.4

Vdc 25 - 9.8 Vdc

1

-6.4

Vdc

50

-I1.0Vdc

2.5

-6.4

Vdc

100

-11.9

Vdc

5

-7.7

Vdc

STDBY

- 5.7 Vdc

FELT,

NYLON,

OR BAMBOO-TIPPED

MARKERS

ON

THE

INSTRUMENT

PANEL

OR

THE

MARKING

MAY

DISCOLOR THE

PANEL

PAINT

PERMANENTLY.

c. Pull the paper table

outatthe

bottom

(Figure 3-2,

Step 2). Clean the black surface

of

the paper table with

Chlorothene solvent. On the rear surface

of

the table, clean the metal pressure roller and the metal paper brake arm with Chlorothene.

At

the

bottom

frontofthe Drive Unit, clean the rubber drive roller with Chlorothene (Figures 5-13,5-14).

d. Carefully clean the writing and marker styli with

Chlorothene. Do

not

use steel wool or abrasive cleaning

compounds.

5-18. Lubrication.

5-19. Minor lubrication should be performed during preventive maintenance. Major lubrication (minor lubrication plus

gearbox)

is

doneatoverhaul andatregular intervalsof12

months or

2000

hours operation,ifused mostly in the

upper

halfofthe speed range.Ifthe Recorderisused most-

ly for low speed operation, more clutches are engaged and

5-9

Section V Maintenance

more reduction gears are used. Thus, a more

frequent

lubri-

cation

may

be required, typically every 6

monthsor1000

hours.

To

help assure

uninterrupted

serviceifan

extended periodofrecordingisanticipated, overhaul and lubricate the Recorder before placing

itonline. Lubricants are listed

in Table 5-2. Lubrication

points

are shown in Figure 5-6.

5-20.

ELECTRICAL

CHECKS.

5-21. For electrical performance checks and adjustments,

refer

to

the

procedures in Table 5-3.Toremove

and

replace

the Driver Amplifier, Regulator,

and

Power Supply Assem-

blies, see Figure 5-2

and

5-3. Driver Amplifier Board test

points are shown in Figure

54.

Regulator/Oscillator Board

test points are shown in Figure 5-5.

5-22. ADJUSTMENTS

AND

MINOR

REPAI

RS.

5-23. Mechanical adjustments are confined

to

the paper

drive and galvanometer assemblies. Paper drive

minor

repair

and

troubleshooting

informationispresentedinTable

54.

If

necessary, galvanometer superficial parts may be replaced

only

to

the

extent

indicated in the Replaceable Parts List.

Do

not

attempt

to

disassemble the Galvanometer,

but

returnitto

HP for service.

5-24. Paper Drive Adjustments.

5-25. The rubber drive roller pulls

paper

over the

paper

table, whereitis

alignedbythe paper guide.

The

paper

is

kept

snug on the table by the paper brake pad, which

presses the paper against a felt-covered plate.

The

paper

is

kept

from slipping on the drive rollerbya pring-loaded

pressure roller. To set up the Recorder so

that

styli run on

the

channel centerlines, the paperisfirst adjusted to run

at the right edgeofthe paper guide, whichisfixed in location. Then the stylus position for each channel

is

adjusted (see

Table 5-3),

the

mechanical limit stops are adjusted,

and

the

electrical limiters are adjusted.

5-26. PAPER BRAKE ADJUSTMENT. The paper brake may have

to

be adjusted occasionally as

the

felt compacts and wears. In all cases, the Recorder should pull the paper snugly,

but

not

tightly, over the paper table.Ifadjustment

is

difficult, refertoParagraph 5-27 and renovate or replace

the felt backing. Load paper into the Recorder (Figure 3-2),

and

runitat

25 mm/second. The paper should settle at the

right edge

of

the paper guide (Figure 5-1).Ifnot,

lower the

paper table and

attempt

oneofthe following adjustments:

a.

If

paper climbsorwrinkles against right edge, loosen

left

adjustment

screwbyturning

it

clockwise (Figure 5-1).

b.

If

paper climbs against left edge, loosen right screw

by turning

clockwise.

5-10

Model

7754A/7414A

c.

If

paper weaves,oralternately moves from side to

side, tighten left screw slightly

by

turningitcounterclock-

wise.

Allow paper travel so

paper

feed and possible paper weave

can be observed. Make further corrections as needed.

If

the paper brake arm has been replaced, take up on the adjustment

screws all the way (CW),

then

release

them

equally

until braking actioniscorrect, by checking paper speed,

and

paper

snugness over the platen. The paper

may

weave

slightly. To correct this weaving, adjust the

paper

brake arm

slightly

at

the leftbytightening the left screw (CCW) so

drag will be greater

at

the

left. Adjust arm progressively

until the paper settles

to

the

right.

5-27. PAPER BRAKE

FELT

RE

OVATIO .Ifthe paper

brake adjustment

is

difficult or

"touchy",

the

paper brake

felt may be worn

out

or compressed.Ifthe

paper

weave

cannot

be corrected

the

felt may be compressed more on

one side than

the

other,

or be misadjusted. Renovate the

felt

as

follows:

a. Lower paper table

and

inspect felt.Ifitisworn

badly, replace 'it.

Ifitis

coated

with plastic

from

Perma-

paper, renovate

it

(below)

and

turnitinside

out

so fresh

surface

is

exposed.Ifitisnot

excessively

coated,

clean and

expand

feltasfollows:

(1) Using a flat-blade screwdriver as a lever, pry

retaining rod from

topoffelt,asshown in Figure 5-7.

(2)

Lower felt and remove retaining stripatbottom

of

felt.

(3) Wash felt in Chlorothene solvent

with

stiff

brush

to

remove all tracesofchart

paper plastic residue. While

it

itisstill wet, uniformly fluffitwith compressed air (aerosol

can

or

air hose),orletitdry and

then

brushitagain.

(4)

Reinstall felt with retaining stripatbottom,

and

retaining

rodattop,bylevering from backoftop

bar as

shown in Figure 5-7.

b. Readjust

paper

brake (Paragraph 5-24),

but

not

so

tightly as

to

affect paper timing.

5-28. PAPER TIMI G CHECK. The timed marker

is

used

to check

the

paper speed accuracy. Since this marker

is

timed from line frequency and

the

paper drive

motorisa

synchronous

type

operatingata multipleofline frequency,

the

two should coincide exactly. This test therefore checks

for mechanical slippage and stretched paper or incorrect

paper brake adjustment.

a. Set the TIMER

to

SEC, the SPEEDto25 MM/SEC,

and MODE

to

RUN.

Turn

on Recorder power.

Run

a few

feet

of

paper

and

set MODEtoSTDBY.

07754-1

J

Model

7754A/7414A

Section V

Maintenance

SIGNAL

TEST

CABLE

~

"OSCB"2400

Hz

./

1

"

2

<

3

<

"OSCA"2400

Hz

4

./

"

5

<

6

<

7

<

8

<

9

<

10

<

440

Hz

"

11

"

12

<

R1

::

R2

::

R3':

, ,

:

~

13

"

14

<

OSCILLATOR

LOAD

PLUG

R1is12.5

ohms, 5 W

R2

is

1 K ohms,

y..

W

R3is1 K ohms,

y..

W

ConnecterisHP

Part No.

1251-1843

A

B

o

E

J

L M

P

H

R

Block:

1251-1682

Catch:

1251-1694

Soc Guide:

1251-1005

Pin Guide:

1251-1006

Contacts:

5080-3772

(6

required)

2-pin Plug:

1251-1818

Clamp:

1251-1697

Nut:

0590-0494(2req'd)

Note:IfHP

3300A

Function

Generatorisused,

use

HP dual-bananatoBNC adapter Part

No.1

011 OA.

Dual Banana Plug:

HP

1251-1818

General Radio

274-MB

Superior

IPG-2

National

Type

FWA

Johnson

108-202

3/16

In. Dia.

(.47

em.

Dia.l

07754-1

....

--------------

5

in.

(12.7 em)

--------------

......

1 in. (2.54 em)

1

1.75

in. (4.5 em)

L...---

J

PC

BOARD

TEST

SUPPORT

Figure 5-2. Test Cable, Plug

and

Fixtures

5-11

Section V Maintenance

EXTENDER

BOARD

(Table 5-1)

TEST

SUPPORT

(FIGURE

5-2)

DRIVER

AMPL!FIER

OR

REGULATOR/

OSCI

LLATOR

ASSEMBLY

(TYPICAL)

Model

7754A/7414A

•

I

Figure 5-3.

Driver

Amplifier

and

Regulator/Oscillator Test

b. Check the spacingofthe timing marks

with

a milli-

meter scale. They should be 25

mm

± 1

%.

Check again

at

100 MM/SEC

and

5 MM/SEC speeds, allowing a maximum

error

of

1

%.

Under certain

humid

conditions,ifthe

paper brakeisset

too

tightly, the paper will stretch slightly on the paper

table, resulting in false timing.

5-29. Stylus Adjustments.

5-30.

The

stylus

pressure, mechanical centering and

parallax may be adjusted. Mechanical stops are adjusted

as

partofthe electrical maintenance procedures,asis

galva-

nometer sensitivity,

but

the galvanometer

itself

has no

adjustments.

5-12

5-31. STYLUS PRESSURE ADJUSTMENT. Stylus pressure must be checked

at

the tipofthe stylus only, for

accurate readings. For access to the stylus tips, four holes

are provided in the front top bar. See Figure 5-8

and

pro-

ceed

as

follows:

a.

Gain accesstotopofRecorder and remove painted

metal cross bar cover

to

expose four holes for stylus pres-

sure tester.

b.

Run

Recorderat5 mm/sec. Hook tipofaccessory

Stylus Pressure Tester 14023A under edge

of

stylus under

test.

c.

lift

tester and stylus. When stylus stops writing,

07754-1

I

Model 7754A/7414A

Section V

Maintenance

TP3

200KHZ

R2

+12V

ADJ

__

.....

L 10

~--J.,

K 9

•

~.J8

~'1~~s~la

H 7

\.~

F 6

~

.....

~

E 5

~~-...-D

4

C 3

.......

r-....S

2

A 1

:::DER~

~

COMPONENT

SIDE

TP8

200 KHZ

REF

TO

OSC

TP1

+12V

TP2

-12V

GROUND,

PIN K

·1

Figure 5-4. Regulator/Oscillator Board Test Points

07754-1

5-13

Section V Maintenance

5-14

TP5

Figure 5-5.

Driver

Amplifier

Board Test Points

Model

7754A/7414A

R30,

DAMPING

9

8

7

6 5 4

3

2

1

SOLDER SIDE

COMPONENT SIDE

07754-1

Model

7754A/7414A

Table 5-4. Paper Drive Troubleshooting

Section V

Maintenance

Trouble

IMPROPER PAPER TRACKI G (paper moves to one side or the other)

PAPER TEARS AT Z-FOLD

PAPER JAMS I PRESSURE ROLLER

PAPER WEAVES FROM SIDE TO SIDE

IRREGULAR PAPER SPEED

I CORRECT PAPER SPEED

oPAPER DRIVE

oSIG AL 0 PAPER

Probable

Cause

Worn brake felt or

bent

paper guide. Uneven tension on paper brake arm adjustment screws.

Excessive brake pad pressure. Also see

One pressure roller spring

is

weaker

than the other.

Paper brake arm tension

not adjusted or armisdirty. Slick or dirty drive roll.

Slick or dirty drive roll.

Solenoid wires to Transfer Board loose or misconnected. Solenoid coil or lead open.

Defective drive motor.

Galvanometer circuit problem.

CAUTIO:

GALVANOMETER

IS NOT FIELD REPAIRABLE.

REPLACE ONLY PARTS SHOWN

IN FIGURE 6-18.

Solution

and

Paragraph

Replace worn part; 5-27. Establish even paper tension, slightly more on left side; Paragraph 5-24.

Adjust

both

brake adjustment

screws clockwise; 5-24.

Replace

both

springs.

Establish slightly more pressure on left; 5-24. Clean or replace;

5-28.

Clean or replace; 5-28.

Check for bad connections, open

solenoid coils, leads.

Check drive

motor

fuse and cable

from power supply.

Refer to Table 5-3 for Driver troubleshooting, and see Paragraphs 5-29

to

5-34 for galvanome-

ter adjustments.

STYLUS

TAIL

PIVOT*

STYLUS

PIVOT*

07754-1

.-~SLlDE

LOCKS (4)

SLIDE

ROLLERS*

TABLE

PIVOT

ROD*

TABLE

LINK

PIVOT

ROD*

DRIVE

ROLLER BEARINGS (2 PLACES)*

PRESSURE

ROLLER

(2

PLACES)*

*LUBRICANT:

ONE DROP OF NO. 10 MACHINE

OIL

DRIVE

CHAIN

GEARBOX

(OVERHAUL)

Figure 5-6. Recorder

Lubrication

Points

5-15

Section V Maintenance

Model 7754A/7414A

REMOVING

FELT

STEP 1

REPLACING

FELT

/-

I

REMOVING

FELT

STEP 2

GALVANOMETER

MOUNTING

SCREW ACCESS

HOLES

(4)

Figure 5-7. Paper Brake

Felt

Cover Removal

and

Replacement

5-16

07754-1

Model 7754A/7414A

tester should read

20

grams,±2grams. Read tester with

respect to

topoffluted ring (Figure 5-8).

d.

If

pressure adjustmentisrequired,

turn

adjusting

screw (Figure 5-8).

CAUTION

DO NOT ATTEMPT TO BEND STYLUS.

e.

If

stylus pressure cannot be adjusted, replace stylus

(Paragraph 5-35),

but

only after observing whether stylus

is

properly mounted, and

that

pivot arm and retaining clip are

locked on.

5-32. STYLUS CE

TER

ADJUSTMENT. Use the fol-

lowing procedure

to

center the writing stylusinits chart

channel:

a. Run chart paper at 25 mm/sec

to

find correct position on table. Unplug galvanometer cable to permit true mechanical centering.

b. Loosen pivot arm clamp screw (Figure 5-10),

but only enough so pivot arm moves on galvanometer upper suspension with a little resistance.

c. Position stylus on channel mechanical center. Run

chart paper to check stylus position, and correct

if

neces-

sary.

d. Slide pivot arm so its

upper

surface is flush with top

of

upper coil shaft (Figure 5-10). Tighten pivot arm clamp

screw firmly.

CAUTION

USE

A SHARP-CORNERED ALLEN WRENCH

THAT

WILL

STAY

IN SET SCREW HOLE

WITHOUT

APPLY-

ING SIDE PRESSURE. DO NOT APPLY EXCESSIVE

SIDE PRESSURE.

e. Reconnect galvanometer cable

to

transfer board

assembly.

5-33. STYLUS PARALLAX ADJUSTMENT. When the stylus has proper parallax, the tail pivot and the stylus tip are on

the

same lineasthe chart channel centerline, with

the result

that

square waves drawn by the stylus are exactly

parallel

to

the chart time lines. To adjust the stylus par-

allax:

a. Loosen two screws indicated in Figure 5-8 and move

stylus tail pivot

into

proper position. Tighten

both

screws

snug

but

not

tight.

b. Test for parallax

by

moving stylus gently with finger

07754-1

Section V

Maintenance

pressure, upscale and downscale, and observing whether stylus markings are parallel

to

time lines, ±0.1

mm

across

width

of

each channel.

c. When adjustment

is

complete, tighten tail pivot

screws. 5-34. CHANNEL TIME SYNCHRONIZATION. When all

channels are synchronized with respect

to

time, all styli fall

on the same time line

of

the recording chart, ±0.25 mm

over the width

of

the entire recording chart. Stylus parallax

may have

to

be readjusted (Paragraph 5-33) after synchronizing channels since galvanometer adjusting screws may have some side play.

If

necessary, the galvanometers can be lined

up

as

follows:

a. Remove chart paper.

b. With a long Pozidriv screwdriver, loosen 2 galvanometer hold-down screws in each misaligned channel just enough so galvanometer can be moved with adjustment screw (Figure 5-9).

c. Adjust with adjustment screws until traces all fall on

same time line. This adjustment

is

by trial and error since

chart paper will interfere with adjustment.

5-35. STYLUS REMOVAL AND REPLACEMENT. The

stylus

is

attached to the galvanometer pivot arm with a

sliding retainer.

CAUTION

CONSIDERABLE CAUTION

IS

REQUIRED

IN

RE-

MOVING

STYLUS SINCEITIS EASILY BENT IN VER-

TICAL

PLANE ALTHOUGHITIS

EXTREMELY

STI FF

HORIZONTALLY.

To remove the stylus, perform the following procedure

(Figure 5-10):

a.

Using long nosed pliers and obtaining some leverage

to limit travel

of

the pull, remove two heater wires from

pins on galvanometer.

b. Push retaining clip on pivot arm forward, toward

Recorder front,

as

shown.

c. Grip stylus between center attaching pin and tail

pivot.

d. Carefully lift stylus free

of

pivot arm and tail pivot

while rocking stylus from side to side.

5-17

Section V Maintenance

Model 7754A/7414A

CONTROL

PANEL

CROSS

BAR

STYLUS PRESSURE TESTER

14023A

PIVOT

ARM

SET-

SCREW

FOR

CEN-

TER

ADJUSTMENT

STYLUS

PRESSURE

ADJUSTING

ARM

LOOSEN

TAIL

PIVOT

SCREWS

PRESSURE

TO

ADJUST

STYLUS

PARALLAX,

ADJUSTMENT

MOVE

PIVOT

SIDE-TO-SIDE

Figure 5-8. Stylus Adjustments

5-36. After stylus replacement, the tipofthe new stylus must be made to conform with the exact angle

of

the paper surface. This angle varies slightly from stylus to stylus. Styli therefore should never be replaced without lapping.

stylus tip

soitspans center 10 divisions. Hold lapping paper

with one finger on each side

of

stylus so paperisexactly

flat. (Figure 5-11.)

NOTE: The new stylus tip should be on the same time line as

the other styli, ± 0.25 mm, otherwise adjust channel time

synchronization, Paragraph 5-34.

c.

Run recorder at .25 mm/sec, slowly moving paper

under the stylus tip. Lapping time should be about

15

seconds. Turn

off

recorder and remove lapping paper.

5-37. STYLUS LAPPING. A new or replacement stylus

must be lapped so

it

will have a uniform trace widthasit

moves across the paper.

a.

Connect30Hz

sine

wave

signal to inputofchannel.

Run recorder at .25 mm/sec speed, and adjust signal ampli-

tude for about 10 divisions deflection. Stop recorder.

d. Lapping

is

complete when stylus leaves uniform trace

across entire channel width. Check stylus pressure,

as

described in Paragraph 5-31. Do

not

lap

excessively since

the stylus tip

is

tapered and will leave a progressively wider

trace.

5-38.

CORRECTIVE

MAINTENANCE.

b. Place a pieceoflapping paper (07850-01520) under

5-39. Instructions for removing and replacing Power Supply

Assembly A3 and Driver Amplifier Assemblies A4, AS,

A6

5-18

07754-1

Model

7754A/7414A

CHANNEL

TIME

SYNC

ADJUSTMENT

SETSCREW

GALVANOMETER MOUNTING

SCREWS

(HIDDEN)

Figure 5-9. Channel Time Synchronization

Adjustment

Section V

Maintenance

and A7 are given in the electrical performance test in Table

5-3. Corrective maintenance procedures cover:

Galvanometer Removal and Replacement

Drive Unit Removal and Replacement Paper Table Removal and Replacement Gearbox Removal, Lubrication and Replacement Marker Assembly and Adjustment.

5-40. Galvanometer Removal and Replacement.

5-41. To remove a Galvanometer, perform the following procedure:

a. Remove any marker assemblies attached to Galva-

nometer, following procedures in Paragraph 5-57.

b. Remove galvanometer cable

WI

fromPCedge con-

07754-1

nector

on

Transfer Board Assembly.

c. Pull

out

paper table at

bottom,

open fully.

d. Remove pack

of

paper from feed tray.

e. Remove stylus from Galvanometer (Paragraph 5-35).

f.

Pass a screwdriver up through galvanometer mounting

screw access holes (Figures 5-7, 5-12) and

unfasten

two

galvanometer

mounting

screws (Figure 5-9). Do

not

change

timing sync setscrew adjustment.

g.

Carefully lift Galvanometer freeofmounting.

5-42. Replacementofthe Galvanometeristhe reverse

of the removal procedure. Always check the Galvanometer synchronization (position) with respect to the chart timing

5-19

Section V Model 7754A/7414A Maintenance

1.

PULL

OFF

HEATER

WIRES UPPER

COIL

SHAFT

USING LONGNOSE PLIERS

2.

PUSH

RETAINING

CLIP

FORWARD

SETSCREW

STYLUS

GALVANOMETER

PIVOT

ARM

3.

GRIP

STYLUS

BETWEEN

PIVOT

AND

TAIL

PIVOT

AND

WHILE

ROCKING

STYLUS

FROM

SIDETOSIDE,

LIFT

GENTLY,

STRAIGHT

UP

4.

CAREFULLYLIFT

STYLUS

FREE OF

TAlLPIVOT

Figure 5-10. Stylus Removal

and

Replacement

5-20

07754-1

Model 7754A/7414A

Section V

Maintenance

Pressure:

20

grams ±2 grams

Signal:

60

Hz sine wave

Amplitude:

10

div deflection

Speed:

0.25

mm/sec

Lapping Time: 15 Seconds Lapping Paper:

07850-01520

(fine)

RECORD FROM

UNLAPPED STYLUS

RECORD FROM

PROPERLY

LAPPED STYLUS

HOLD

LAPPING PAPER AS SHOWN

STYLUS

Figure 5-11.

Stylus

Lapping Procedure

lines (Timing Sync, Paragraph 5-15, part d) after replacement. Faulty

parall~

may be corrected with the time

synchronization procedure in Paragraph 5-34.

5-43. Drive

Unit

Removal

and

Replacement.

5-44. The Drive Unit can be removed from the main chassis for maintenance.

Itisnot

necessary to remove the drive

unit to gain access to the gearbox or galvanometer

assemblies, which can be removed separately. To remove the Drive Unit,

fust

remove the Recorder from the Case (Figure

2-11).

To

removeitfrom the Case, unfasten the screws

shown and lift out the Recorder. The Recorder need

not

be

removed from the Cabinet or the Cart,

but

a table should

be placed under the drive

unit

before the drive

unitisre-

moved.

CAUTION

TO PREVENT

ACCIDENTALLY

UNBALANCING

THE

RECORDER,

ALWAYS

TIPITONTO THE

HEAVY

SIDE

THAT

CONTAINS THE

DRIVE

UNIT.

07754-1

a. Tip the Recorder

onto

its left side (facing the front

panel).

b. Refer to Figure 5-12 and disconnect the drive

motor plug and speed control wires (inset). Remove four screws from the front and rear

bottom

cross bars. Two typical

screws are shown in the illustration.

c. Carefully return the Recorder to a level position, on a

flat surface.

d. Remove the control switch cover bracket and the control panel cross bar (Figure 5-8). Unplug galvanometer, interlock and marker cables.

e. Remove one flat-head Pozidriv screw from upper rear

center portion

of

paper feed tray on Drive Unit (Figure

5-12, lower illustration).

f.

Carefully lift the Drive Unit up and

outofthe main

chassis (Unit Housing Assembly).

5-21

Section V

Maintenance

Model 7754A/7414A

2

RED

BLACK

o

SPEED

CONTROL

CONNECTIONS

WIRE

1 BROWN

~--""':-""-4

ORANGE

:.-----;---3

YEL LOW

DRIVE

MOTOR

PLUG

TRANSFER

BOARD

ASSEMBLY

A3A1

GALVANOMETER

FRONT

BOTTOM

DRIVE

UNIT

MOUNTING

SCREW CROSS

BAR

(HAS

2 OF

RETAINING

ACCESS

HOLES

4

RETAINING

SCREWS; SCREWS (2 OF 4)

NOT

SHOWN)

GALVANOMETER MOUNTING

SCREW

ACCESS HOLES

LOCATION

OF

DRIVE

UNIT

REAR

TOP CROSS

BAR

SCREW

Figure 5-12. Drive

Unit

Removal

5-22

07754-1

Model

7754A/7414A

5-45. Reinstallationofthe Drive Unitisthe reverseofthe

removal procedure.

5-46. Paper Table Disassembly for Drive Roller Replace-

ment.

5-47. The Drive Unit must be removed from the Recorder

if

the paper tableisto be disassembled, to gain access to the

drive roller

if

it is to be replaced. To disassemble the paper

table, proceed

as

follows:

a. Pull

out

the paper table at the

bottom

and lower it to

a horizontal position (Figure 5-13).

b. Remove two flat head screws

that

mount

paper guide

plate through a strip

nut

(barofmetal with two tapped

holes)

at

backofpaper table (Figure 5-13).

c. Remove paper guide plate.

d. Remove rod retainer exposed at

upper

right corner

of

table, slide pivot rod to lefttodisengage pivot arm.

e. Spring one

of

center table link pivots outward gently

to disengage table from pivot rod.

f.

Loosen 4 gearbox retaining screws to slacken drive

chain on table sprocket.

g.

Using small, flat-blade screwdriver, pry

off

snap ring

holding sprocket to drive roller shaft (Figure 5-14).

Pry

only at centerofC-shaped ring,

as

shown, using keyway for

access to ring.

h. Remove sprocket gear and key from shaft.

i. Remove screw

at

bottom

right edgeofdrive

unit

(Figure 5-15).

j.

Spring drive unit side plate outward with finger pres-

sure

only,

and pull table link and drive roller

outasshown

in Figure 5-15

(1, 2).

k. Remove bearing

at

each endofdrive roller (3).

1.

Remove right sideofdrive roller by springing table

link

outward

(4)

and pulling drive roller up and to right (5).

m. Reverse disassembly procedures to reassemble paper

table.

NOTE: Paper interlock switch and wires may

not

be pre-

sent in some units.

07754-1

Section V

Maintenance

5-48.

Gearbox

Removal

and

Overhaul.

5-49. The gearbox may be removed for service

without

re-

moving the drive unit from the main recorder chassis

(unit

housing assembly). To remove

tre

gearbox, perform the

following steps:

a.

Remove all preamplifiers from preamplifier rack.

b. Remove speed control wires and

motor

cable from

transfer board assembly (Figure 5-18 inset).

c. Remove four screws shown in Figure 5-16,

as

follows:

(1) Remove Screw A, located on the Drive Unit in-

side the preamplifier rack.

(2)

Tip the Recorder up at the preamplifier side. Under the preamplifier rack, toward the rear, locate and remove Screw B from the Drive Unit.

(3)

Remove Screw C through the Recorder side

plate.

(4)

Remove Screw D through the Recorder side

plate.

d. The gearbox will drop away from the Drive Unit.

If

necessary, press inonthe hex

nut

shown in Figure 5-16 to

clear side plate.

e. Elevate the front

of

the Recorder with a wooden

block about 3.5 inches (7 or 8 cm) high. Lift the

output

chain away from the

output

sprocketasshown in Figure 5-17. OTE: The gearbox should be lubricated whenever the recorder

is

overhauled, in addition to the

normallubri-

cation at 12

monthsor2000

hoursofoperation at varying speeds. Under continued low speed operation, the gearbox should be lubricated every 6 months or 1000 hours. Whenever an extended period

of

recordingisanticipated, that is,

for

30,

60 or90days continuous

duty,

a lubrication

and inspection before the recording period will help to assure uninterrupted service.

For

a listofthe recommended lubri-

cants, see Table 5-2.

5-50. GEARBOX INSPECTION. With the gearbox separated from the Drive Unit, set

it

up for test running. This

test run

is

the same as the run-in performed after lubri-

cation. Connect the

motor

cable and speed

control

cable to

the Transfer Board Assembly with extender cables

as

shown

in Figure 5-18. Remove

the

inspection platetoexpose

the gear train. Inspect for brass particles from the gears.Ifany are found, move the gears

by

hand

and inspect the gear teeth for excessive wear or damage. Run the gearbox in all chart speeds (selected from the recorder

control

panel), and

5-23

Section V Maintenance

DRIVE UNIT SIDE

PLATE

PIVOT ROD

SEPARATE

PAPER

TABLE

FROM

TABLE

LINK

BY

PRYING

HERE

/

Model 7754A/7414A

PRESSURE

ROLLER

PAPER

GUIDE

5-24

e~""~~!!!1~5~~~==-_..:.

STRIPNUT

Figure 5-13. Paper Table Removal

07754-1

Model 7754A/7414A Section V

Maintenance

DRIVE

INTERLOCK

PAPER

INTERLOCK

PAPER PAPER

ROLLER

WI

RE

SWITCH

TABLE

BRAKE

ARM

Figure 5-14. Drive

Roller

and

Table

Link

Removal (Part

1)

5-25

KEY

07754-20590

LINK

PIVOT

DRIVE

SNAP

ROLLER

SHAFT

RING

TABLE

LINK

SMALL

SCREWDRIVER

SNAP

RING

07754-1

I

I I

I

I I

I

I I

Section V Maintenance

1.

PUSH

DRIVE

UNIT

SIDE

PLATE

OUTWARD

HERE

Model

7754A/7414A

SIDE

PLATE

2.

PULL TABLE

LINK

OUT

5.

PULL

DRIVE

ROLLER

UP

AND

OUT

BEARING

REMOVE

SCREW

FROM

ENDOFBEARING

4.

SPRING

TABLE

LINK

3.

REMOVE

BOTH

OUTWARD

AT

THIS

POINT

BEARINGS

Figure 5-15. Drive

Roller

and

Table

Link

Removal (Part 2)

5-26

07754-1

I

Model7754A/7414A

Section V

Maintenance

SCREW A

SCREW

B

REAR

07754-1

SCREW

C

SPROCKET HEX

NUT

Figure 5-16. Gearbox Removal

SCREW

0

5-27

SPEED

CONTROL

CABLE

CONNECTION

CLU

CH

SLEEVE

CLA

PER

OIL

TWO

SIDE

PLATE

BEARINGS

FEELER GAUGE FOR CLUTCH

SLEEVE

CLEARANCE

OF 0.01 INCH

SOLENOID ADJUSTMENT SCREW (TYPICAL OF 4)

POWER SUPPLY ASSEMBLY

A3

EXTEND

WITH

JUMPERS

MOTOR

EXTENDER CABLE CABLING

8120-0962

CONNECTOR 8120-0971

CONNEC

OR

8120-0961

(SAMEASA3J9)

GEARBOX

R CHASSIS

I CREW (TYPI L OF 4)

(1) BROWN

(2) RED

(3)

ORANGE

(4)

YELLOW

(5)

BLACK

LEFT

SIDE

PLATE

TRANSFER

BOARD

MEASURE

SHAFT

END

PLAY

WITH FEELER GAUGE

AT

SIDE PLATE (0.001 INCH) (ACTUAL

LOCATIONISHIDDEN)

OIL

BETWEEN

ALL

GEARS

AFTER

BENCH RUN-IN

(TYPICAL

LOCATION)

Figure 5-18. Gearbox Inspection

and

Solenoid

Adjustment

Section V Maintenance

• •

•

GEARBOX

A10A1

WOOD

BLOCK

(SEE

TEXT)

Model 7754A/7414A

Figure 5-17. Drive Chain Removal

listen for chatteringofclutch springs, which indicates either a need for lubrication or replacement

of

the clutch spring

or replacement

of

a gearifthe gear hubisworn. Parts

that

are obviously faulty, suchasa twisted spring jamming

the

gearbox, should be replaced during overhaul.

5-51. GEARBOX DISASSEMBLY.

Use

the following pro-

cedure

to

disassemble the gearbox, and to inspect for clutch

wear.

a. Remove four screws holding the

motor

chassis and

drive

motor

(Figure 5-18).

b. Tip

the

chassis, toward the drive

motor

as shown in

Figure 5-19, removing the chain, cover, and

motorasa unit.

c. Turn the gearbox upside down and remove eight

screws holding the

bottom

cover and solenoids.

d. Remove

the

bottom

cover

by

lifting

it

upward

(Figure 5-19).

5-28

OTE:

If

gears are

to

be replacedorcomponents lubri-

cated remove only one shaft at a time to preserve the order

of

the gears on the shaft for best wear characteristics.

e. Remove one screw holding the primary shaft to

the

end plate, and pull

out

the shaftbythe large

output

gear

(Figure 5-20).

Lift

the entire primary gear train

outasone

unit. Note the orientation and position

of

each component.

f.

Remove the parts from the gear train one at a time,

and clean each

part

by

brushing it with Chlorothene solvent. Wipe plastic clutch sleeves with Chlorothenedampened cloth.

CAUTION

ALWAYS

BRUSH

NON-PLASTIC

PARTS; NEVER

IMMERSE THEM IN SOLVENT. DO NOT WASH PLAS-

TIC

CLUTCH SLEEVES WITH SOLVENT.

g.

Inspect each

part

for damage and wear before lubrication. To check for hub wear, drag a fingernail across hub surface and check for grooves.

07754-1

1.

CHASSIS

REMOVING

MOTOR

CHASSIS

2.

REMOVING

GEARBOX

COVER

Figure

5-19. Gearbox Cover Removal

Mode17754A/7414A

1.

Section V

Maintenance

2.

3.

07754-1

Figure 5-20. Gearbox

Shaft

Removal

5-29

Section V Maintenance

h. Arrange each part in order on a wooden dowel for proper position during reassembly on the shaft during lubrication.

5-52. GEARBOX LUBRICATION. After all gears are arranged on the dowel, lubricate

as

follows:

a. Oil each gear bearing with Mystery Oil (Table 5-2)

to

soften gum residues.

b. Grease each primary clutch and gear assembly as shown in Figure 5-21, using the following steps to grease each assembly:

(1) Work grease into coils

of

each spring, and install

on one

halfofclutch hub. Note

that

spring key must be in

proper position (Figure 5-21).

(2) Slip plastic clutch sleeve (with ratchet teeth) over

spring; mate sleeve

cutouttospring key, and pack more

grease into end

of

sleeve.

(3) Coat mating gear

hub

with grease and twist hub

into assembled clutch and spring.

As

a testofclutch wear,

clutch hub should

"grab"

spring when twisted in one direc-

tion, and slip when twisted in other.

If

clutch slips in

both

directions, replace hub and attached gear, or worn spring.

c. When

all gears are reassembled

onto

shaft, slip shaft

out as shown in Figure 5-20, leaving gear train

as

one unit.

Oil

shaft lightly with No. 10 oil (Table 5-2), and remove

excess oil. Reassemble primary shaft between side plates (Figure 5-20), in reverse disassembly procedure, and tighten screw securely. Note

that

shaft does

not

rotate. Steel

washer on shaft end must be properly positioned.

d. Remove secondary shaft in same way

as

primary shaft (Paragraph 5-5), clean gears and spring clutches without submerging them in solvent, and arrange them in order (Figure 5-22).

Oil

with Mystery Oil (Step a).

e. Grease each secondary clutch and gear assembly

as shown in Figure 5-22. Inspect each part for damage or wear before greasing,

as

noted

in illustration. Drag a fingernail

across hub surface

to

inspect for wear grooves.

Use

follow-

ing steps to grease springs and hubs:

(1) Work grease into the coils

of

each clutch spring.

(2)

Grease each clutch hub.

(3) Twist spring and hub together. Remove excess

grease. Test clutch hub by twisting in

both

directions. Hub

should

"grab"

spring when twisted one way and slip when

twisted

other

way.

5-30

Model 7754A/7414A

When all gears are reassembled

onto

shaft, slip shaft

out,

leaving gear trainasone unit (Figure 5-20).

Oil

shaft lightly

(do

not

use grease).

g.

Reassemble shaft between side plates and tighten

screw securely.

h. Grease gearbox gear

teeth

with

HP

6040-0222 gear

grease.

i. Replace

bottom

cover (eight screws, Figure 5-19).

CAUTION

THIS COVER ACTS

AS

A SPACER TO

KEEP

SIDE

PLATES A

FIXED

DISTANCE APART

AND

PARALLEL,

AND THUS SHOULD

BE

INSTALLED BEFORE

AD-

JUSTING SHAFT END PLAY.

5-53. GEARBOX SHAFT END PLAY ADJUSTMENT. The end play

of

the primary shaft and the secondary shaft may

be adjusted with the gearbox top cover and drive

motor

removed. Perform the following steps for each shaft:

CAUTION

END PLAY MUST

BE

NO MORE

THAN

0.007 INCH (0,2

mm),

OTHERWISE CLUTCH SPRINGS WILL WIND

DOWN

BETWEEN CLUTCH HUBS

AND

DISABLE

GEARBOX.

a. Tighten sprocket hex.

nut

snug; back

off

using feeler

gage

to obtain 0.007 inch end play. Push all gearstoone

side and measure at side plate (Figure 5-18).

b. While holding hex

nutsoit

cannot move, use a

440 Bristol spline wrenchtotighten locking setscrew in center of

hex

nut

(Figure 5-23). An Allen wrench will

not

fit.

5-54. GEARBOX REASSEMBLY. Reassemble the gearbox and adjust the tension

of

the input chain (transfers torque

from the drive motor

to

the gearbox)asfollows:

a.

Place input chain on

motor

sprocket, and install gear-

box top cover and

motor

with four screws (Figures 5-18,

5-19), leaving them loose in oval mounting holes.

b. Suspend gearbox

by

drive

motor

as in Figure 5-24.

Weight

of

gearbox sets chain tension. Tighten screws with

gearbox hanging by

motor,

being sure

motor

and gearbox

are aligned.

c. To test chain alignment, sight along chain and inspect

for misalignment

of

motor

sprocket with gearbox sprocket.

If

necessary

to

straighten chain, readjust

motor

shaft

sprocket toward or away from motor.

07754-1

Model 7754A/7414A

PRIMARY

SHAFT

COMPONENTS

INSPECT FOR WEAR

AT

THESE POINTS,

TYPICAL

OF 8 PLACES

Section V

Maintenance

01LSHAFT

BEARINGS

WITH

MYSTERY

OIL

(TYPICAL

LOCATION)

FOR RUN-IN

INSPECT FOR DAMAGED

SLEEVES

AND

SPRINGS

1.

2.

3.

07754-1

Figure 5-21. Spring Clutch

Lubrication

(Primary Shaft)

5-31

Section V Maintenance

SECONDARY

SHAFT

COMPONENTS

o

Model 7754A/7414A

OIL

SINTERED

BEAR

INGS

WITH

MYSTERY

OIL

INSPECT FOR

WEARATTHESE

POINTS,

TYPICAL

OF 8 PLACES

5-32

Figure 5-22. Overriding Clutch

Lubrication

(Secondary Shaft)

07754-1

I

I I

I

Model 7754A/7414A

Section V

Maintenance

BRISTOL

WRENCH

o

4-40

BRISTOL

SPLINE

WRENCH

HEX

NUT

HOLD

HEX

NUT

STEADY

WITH

WRENCH

WHILE

TIGHTENING

SETSCREW

Figure 5-23. Gearbox

Shaft

End

Play

Adjustment

CHART

DRIVE

MOTOR

GEARBOX

LUBRICATE

INPUTCHAIN

BEFORE

INSTALLING

TOP

COVER

07754-1

Figure 5-24. Gearbox

Input

Chain Tension

Adjustment

5-33

Section V Maintenance

5-55. Solenoid Adjustment. 5-56. Adjust

the

solenoids (Figure 5-18) using

the

adjust-

ment

screw shown, and check while energized with a 0.01

feeler gage between the solenoid clapper and

clutch

sleeve.

5-57. GEARBOX BENCH RUN-IN. After lubricating

the

gearbox

components,

connect

the

gearboxtoa recorder as

shown in Figure 5-18. With the inspection plate removed, run the gearbox at lowest speed (selected at the recorder control

panel). Excess Mystery Oil, applied in the pro-

cedure

in

Paragraph 5-52 will run

out

from between

the gears, carrying with it dissolved gum and grease residue. Stop the drive

motor

and wipe away this residue frequent-

ly. After 15 minutes

of

running, run through a complete

set

of

gear changesatthe front panelofthe recorder while

inspecting the action

of

the

gearbox

through

the inspection

hole.

All

clutches should operate properly

and

the gears

should

rotate

smoothly.

Stop

the

drive

motor

and place

three or four drops

of

o. 10 oil (Table 5-2) between

the

gearstolubricate

the

gear bearings (typical points are in-

dicated in Figure 5-18).

Run

the

gearboxatits lowest speed

for several minutes

to

ensure

that

the

oil will seep

down

into

the gear bearings

and

be stored for future lubrication.

Then run through the gear changes again to see

that

all

relays are operating properly, retracting the actuators fully,

and

not

hanging uponthe

clutch

sleeves.

HEAT

LEAD

ATTACHMENT

SCREW

Model

7754A/7414A

5-58. Marker Assembly Maintenance.

5-59. The marker assemblies are

attachedtoadjacent gal-

vanometers.

To

adjust

the

stylus position, first set the

writing stylus bumpers (Table 5-3) and

then

loosen the at-

tachment

screw (Figure 5-25). Position the marker stylus so

that

it does

not

hit

either

bumper

during its excursion, and

tighten the

attachment

screw. Unfasten this screw to re-

move the stylus,

and

also remove the

heat

lead and its

attachment

screw. To increase stylus pressure move stylus

toward paper

by

loosening the screw in the slotted hole

just

above

mounting

screw for stylus. To remove the marker coil, unfasten the marker leads (Figure 5-1) from the Transfer Board Assembly,

and

unfasten the

two

marker

moun

t-

ing screws shown in Figure 5-25. Two stylus heat leads also must be disconnected in the marker frame area.

5-60.

If

the stylus only, less coil, must be replaced, remove

heat

leads from standoffs on galvanometer and remove

Pozidriv screw from marker mounting

bracket

(Figure

5-25). Install the new stylus on the

mounting

bracket

with

the screw, and reinstall the

heat

leads. Reset stylus pressure with each new installation, and readjust the marker amplitude moveable stop,

if

necessary (Figure 5-25).

MARKER

AMPLITUDE

ADJUSTMENT

STOP

MARKER

STYLUS

j

1

MARKER

MOUNTING

SCREWS

ADJUSTMENT STOP SCREW

STYLUS

ATTACHMENT

AND

POSITION

ADJUST-

MENT

SCREW

5-34

Figure 5-25.

Marker

Assembly

Adjustment

and

Removal

07754-1

Model 7414A

SECTION

VI

REPLACEABLE

PARTS

Section

VI

Replaceable Parts

6-1.

INTRODUCTION.

a.

6-2.This section con tains schematics, figures and information for identifying, locating and ordering replacement

parts.

A1

/

ASSEMBLY

NO.

R

COMPONENT

NUMERIC

DESIGNATION

6-3. Table

6-1

lists parts in sequential order

of

the reference designations (circuit references) and provides the following information for each item.

a.

Descriptionofthe

part

(see listofabbreviations on the

following page).

b. Typical manufacturer

of

the

part

using a five-digit

code. See the code list

of

manufacturers in Table 6-2.

COMPONENT

ALPHA

DESIGNATION

The complete reference designationisreadasthe first resistor

(R1)of

the firs t assembly (A 1).

b.

SU

BASSEMBLYNO.

c.

Manufacturer's part number.

d.

Total quantity used in the instrument (TQ column).

Note: Identification

of

the attaching parts (screws, nuts,

washers, rivets, etc.) used to secure a componen t in place

is

entered immediately after the listing

of

the respective

component in Table 6-1.

A1

/

ASSEMBLY

NO.

A2

R1

COMPONENT

ALPHA-NUMERIC DESIGNATION (REFERENCE

DESIGNATION)

6-4. REFERENCE DESIGNATIONS.

6-5. Table

6-1

uses an alphabetical-numerical (alpha-

numeric)

method

of

listing the end item, assemblies, subassemblies and circuit components. These items are defined

as

follows.

a.

An E D ITEMisthe instrument with all the supplied

accessories. The E D ITEM

is

madeupof

assemblies to aid

in the location

of

parts.

b. Each assembly and subassembly

is

assigned an

"A"

number

(AI,

A2, A3, etc). Assemblies and subassemblies

that

can be purchased have

part

numbers

in

the

part

number column

of

Table 6-1; those

that

cannot

be

purchased have the word

"Reference"

in the column.

c.

Components within the assembly and subassembly

circuits are assigned circuit reference designators

(C

1

capacitor,

Rl

resistor, etc.). These parts are prefaced by the

assembly number

(AICI,

A2C2,

AIRl,

A2R2

etc.) to

indicate the assembly on which the

partislocated.

6-6. Examples

of

the alpha-numeric numbering

method used to identify assemblies, subassemblies and circuit components follow:

07414-1

The complete reference designation

is

readasthe first

resistor

(RI)ofthe second subassembly (A2)ofthe first

assembly

(AI).

6-7. Partial reference de ignations are normally u ed on the equipment

and illustrations. The partial reference

designation consists

of

the

component

alpha designation

and

numeric

designation. The complete reference

designations are obtained by placing the

prope~

assembly number (and subassembly number, when applicable) before the partial reference designations.

6-8. In this section, these assembly prefix numbers are usually shown with each reference designation, in the title of

the figure or at the

bottomofthe illustration block

following the notation

"REF

DESIG

PREFIX".

The complete reference designation should be used to easily locate a part and the description in the Parts List (Table 6-1).

6-9.

For

example,

to

determine the value and the

part numberofresistor R6 in the A2 assembly (A2R6), locate the A2 group listing

(the

second group) in the parts list. Then refer to the R (resistor) designations in the group and find R6. The value and the

part

number areinthe columns

adjacent to the description.

6-1

Section

VI

Replaceable Parts

6-10. ORDERING

INFORMATION.

6-11. To order a replacement part, address order or inquiry to the local Hewlett-Packard Sales/Service Office (see list

of addresses at the rearofthis manual) and supply the HP part number

of

the item from Table 6-1.

6-12. To order a

part

not

listed in the table, provide the

following information:

Model

7414A

a.

Model numberofthe instrument.

b. Complete serial number

of

the instrument.

c.

Description

of

the

part

including function and

location.

6-13. To order a

part

from a manufacturer other than

Hewlett-Packard Company provide the complete part

description and the manufacturer's

part

number from Table

6-1.

REFERENCE

DESIGNATORS

A

assembly

F

fuse

Q

transistor

U non

repairable

assembly

B

motor

FL

filter

R

resistor

V

vacuum

tulle

BT

battery

HR

heater

RT

thermistor

photocell,

etc.

C

capacitor

J

jack

S

switch

W

cable

CP

coupler

K

relay

T

transformer

X

socket

CR

diode

L

inductor

TB

terminal

board

XDS

lampholder

DL

delay

line

M

meter

TC

thermocouple

XF

fuseholder

OS

device

signaling

(lamp)

MP

mechanical

part

TP

test

point

y

crystal

E

miscellaneous

electronic

part

P

plug

Z

network

ABBREVIATIONS •

A

amperes

fil

hd

fillister

head

n

nano (10-9)

rot

rotary

j

ACC

accessories

flm

film

NC

normally

closed

AFC

automatic

frequency

control

FR

front

Ne

neon

s-b

slow-blow

Al

aluminum

fwd

forward

NE1WRK

network

scon

semiconductor

AMP

amplifier

fxd fixed

Ni

PI

nickel

plale

Se

selenium

as

ord

as

ordered

NO

normally

open

sect

section(s)

G

cis

gigacycles

per

second

NPN

negative

positive

negative

SEMS

machine

screw

with

BeCu

beryllium

copper

(see

G Hz)

NPO

negative

positive

zero

washer

BFO

beat

frequency

oscillator

Ge

germanium

(zero

temperature

SEQ

sequential

bh

binder

head

GE

generator

coefficient)

Si

silicon

bp

bandpass

G

Hz

gigacycles

per

second

nsr

not

separately

replaceable

sil

silver

brs

brass

gl

glass

sl

slide

grd

ground(ed)

obd

orderbydescription

SPOT

6ingle-pole

double-

cis

cycle<;/second

(see

Hz) od

outside

diameter

throw

CALIB

calibration

h

henry(ies)

ov hd

oval

head

spl

special

ccw

count

rclockwise

hex

hexagonal

ox

oxide

SPST

single-pole

single-

cd pi

cadmium

plate

Hg

mercury

throw

cer

ceramic

Hz

cycle

per

second

pc

printed

circuit

board

sst

stainless

steel

ch

channel

PEMS

circular

press

fitted

nut SWTCH

switch

cmo

cabinet

mount only

impg

impregnated

pF

picofarad

(10-12farads)

coef

coefficient

incd

incandescent

PH

phone

Ta

tantalum

com

common

ins

insulation(ed)

ph

brz

phosphor

bronze

td

=

time

delay

comp

composition

ips

inches

per

second

Phi

he:

Phillips

head

Ti

{

titanium

conn

connector

piv

peak

inverse

voltage

tog

toggle

CRT

cathode-ray

tube

k, K

kilo

(1000)

pk

peak

tol

tolerance

cw

clockwise

Kc,

kc/s

kilocycles

(see

kHz)

P

L

panel

trim.

trimmer

KEPS

hex put with

lockwasher

P

positive

negative

positive

twt

traveling

wave tube

dB

decibel

kHz

kilocycles/second

poly

polysty

rene

micro

(10-

6

)

dep C

deposited

carbon

por

porcelain

1J0r U

DISP

display

lin

linear

taper

pos

position(s)

IJA

microamperes

DPDT

double-pole

double-throw

lkwash

lockwasher

pot

potentiometer

IJF

mic

rofarads

j

DPST

double-pole

single-throw

log

logarithmic

taper

pp

peak-to-peak

11

V

microvolts

lp

fit

low-pass

filter

PREAMP

preamplifier

ElA

tubesortransistors

meeting

milli

(10-3)

prec

precision

V

volt(s)

Electronic

Industries

Associ-

m

(temperature

coeffi-

vac

\acuum

ation

standards

will

normally

rnA

milliamperes

cient,

long

term

Vacw

volt(s)

alternafing

resultininstrument

opera-

mam

milliammeter

stabi

lity,

and/or

currntworking

ting within

specifications;

M

mega.ll0

6

)

tolerance)

var

variable

tubes

and

transistors

selected

M

cis

megacycles

(see

M Hz) pt point

Vdcw

volt(s)

dIrect

current

for

best

performance

will

be

met

flm

metal

film

working

suppliediforderedbystock

mfr

manufacturer

rec

recorder

numbers

mH

millihenry

rect

rectifier

W

watt(s)

elect

electrolytic

MHz

megacycles/second

rev

reverse

w/

with

encap

encapsulated

minat

miniature

rf

radio

frequency

w/o

without

mom

mnmentary

rh

round

head

wiv

reverse

working

F

farad(s)

mtg

mounting

rmo

rack

mount only

voltage

fet field

effect

transistor

mV

millivolt

rms

root-mean-square

ww

wirewound

fh flat

head

mW

milliwatt

n

ohm

FIG

figure

my

mylar®

(DupontdeNemours)

ElectriC

Accounting

Machines

(EAM)

capitalize

all

abbreviations

6-2

07414-1

Model

74l4A

Section

VI

Replaceable

Parts

Table 6-1. Replaceable Parts

Reference

HP Part Number

Qty

Description

Mfr

Part Number

Designation

Code

Al

07754-60270

1

UNIT HOUSINGCFIG.

6-21

28480

07754-60270

A2

07754-60240

1

CONTROL

PANELIFIG.

6-31

281t80

07754-60ZltO

A2Ai

07754-60120

1

CONTROL

SWITCH BOARDIFIG.

6-51

284BO

07754-60120

A2A2

07754-60130

1

HEAT

POTENTIOMETER BOARD(FIG.

6-6)

28480

07754-60130

A243

07754-60140

1

PREAMPLIFIER

POWER

SUPPLYCFIG.

6-71

28480

07751t-60140

A3

07754-60050

1

POWER

SUPPLY(FIG.

6-91

281t80

07754-60050

A341

07754-60150

1

TRANSFER BDARD(FIG.

6-11)

28480

07754-60150

A4

07754-60170

7

DRIVER

AMPLIFIERIFIG.

6-131

28480

07751t-60170

A5

07754-60170

DRIVER

AMPLIFIERIFIG.

6-131

28480

07754-60170

A6

07754-60170

DRIVER

AMPLIFIER(FIG.

6-131

281t80

07751t-60170

A7

07754-60170

DRIVER

AMPLIFIERIFIG.

6-131

28480

07751t-60170

A8

07754-

60180

1

REGULATOR/OSCILLATOR BOARD:60

HZ

(FIG.

6-15)

281t80

07751t-60180

A9

07754-60181

1

REGULATOR/OSCILLATOR BOARD:50

HZ

(OPT 008)

28480

07754-60181

Al~

07754-60250

1

DRIVE

UNITIFIG.

6-161

281t80

07754-60250

AI0Ai

077

54-

60040

1

GEARBOXCFIG.

6-171

28480

07754-60040

All

07754-60070

4

GALVANOMETERCFIG.

6-181

28480

07754-60070

AlUI

07754-60340

1

STYLUS(FIG.

6-18)

28480

07751t-60340

A12

07754-60070

GALVANOMETER(FIG.

6-18)

28480

07754-60070

An

07754-60070

GALVANOMETER(FIG.

6-18

)

28480

07754-60070

Alit

07754-60070

GALVANOMETER(FIG.

6-18)

28480

07754-60070

A15

07754-

60350

2

MARKER

(FIG.

6-19).

EVENT

28480

07754-60350

A16

07754-60350

HARKER

(FIG.

6-19).

TUIED

28480

07754-60350

A17

868-500AC13

1

OSCILLATOR:21t00 HZ(OPT

004,

FIG.

6-201

28480

868-500AC13

A18

868-500AC14

1

OSCILLATOR:1t40 HZ(OPT

005,

FIG.

6-211

28480

868-500AC14

A19

07754-63499

ACCESSORIES(FIG.

6-221

28480

07754-63499

A2:l

07754-60350

MARKER

(FIG.

6-19).

OPTION 015

28480

07754-60350

EVENT

MARKER

A15

UNIT HOUSING

A1

TIMED

MARKER

A16

'2.._~....-

--GALVANOMETER

ASSEMBLIES

A11-A14

440HzOSCILLATOR

ASSEMBLY

A18

DRIVER AMPLIFIER

A4

DRIVER

AMPLIFIER

A7

07414-1

Figure 6-1. Model 7754A Recorder (End Item)

6-3

Model 7414A

Table 6-1. Replaceable Parts (continued)

Section

VI

Replaceable Parts

Reference Designation

A1

.A1

El

A1MP1 A1MPZ

A1MP)

A1MP4

A1I'4P5 AHIP6 Al14P1

A1MP8

AZMP1 AZMPZ AZ14P3

AV4P4 AZMP5

AZ14P6

AZ14P1 AZMP8 AZ14P9 AZMP10

AZMP

11 AZMP1Z AZ14P13 AZMP14 AZ14P15

AZMP16 AZ14P11 AZMP18 AZMP19 AZMPZO

AZMPZ1 AZMPZZ AZA1

A2A1C1 AZAlCZ

A2AlC3 AZA1C4 AZA1C5

A2A1C6

AZA1CH

AZA1CRZ

AZAlCU AZA1CR4 AZA1JZ6

AZA1MP1 AZA1R1

AZAU3 AZA1Rlt

AZA1R5 AZA1R6 AZAlR

1

AZA1R8 AZA1R9

AZA1R10

A2A1Rll

AZAlSZ AZALU1

AZAZ

HP

Part Number

01154-60210 01154-

00411 2360-0182 01154-00063 01154-00064

01154-00010 2510-0123 2580-0006 01754-00080 2Z00-0

165 07154-20311

2510-0123 01754-

2032 0 2510-0123 01154-20330

2510-0123 07754-20350 2360-0182 07154-00110 01754-60240

2360-0185 2680-0051 0370-1005 0370-1005 0310-1005

0370-1005

01754-

00090 2200-0103 07754-

00101

0380-0801 2200-0165

0370-2051 0370-2051 0370-2051 0310-2051

0370-2051 0370-2051 0370-2051 0370-2051 0370-2051

0370-2051 0370-2051 0310-2051 0370-2051 0370-2051

0310-2051 0370-2051 07754-60120 2200-0103 0150-0052

0150-0052

0150-0052 0150-0052

0160-3097

1901-0033 1901-0033

1901-0033 1901-0033 1251-2034 2340-0001

2200-0111

516-5 0361-0350 0683-2105 0683-4715

0683-2715 0683-1015 0683-2705 0683-2705 0683-2105

0683-2705 0683-2705

0683-1005

3101-1289

07754-00120 07154-

60130

Qty

1

10

1

2

11

15

1

8

5 5

4

1

6

1

2

16

18

1

22

1

22

4

2

4

6

5 1

11

Description

UNIT

HOUSING(FIG.

6-21

TRIM

STRIP

SCREW1FlATHOPOllOR6-32X0.312"

lG PANEllSIOE, lEFT PANEllSIOE,

RIGHT

MOUNT:POWER

SUPPLY

SCREW:FlATHOPOllDR8-32X0.500"

lG NUT:HEX

8-32

THREAD GUIOE:AMPlIFIER SCREW:FlAT

HO

POllDR4-40

X

1/4"

BAR:CROSS.

FRONT

SCREW:FlATHOPOllDR8-32X0.500"

lG

BAR:CROSS.

TOP

SCREW:FlATHOPOllOR8-32X0.500"

lG

BAR:CROSS.

REAR

SCREW:FlATHOPOllOR8-32X0.500"

lG

BAR:CROSS.

CONTROL

PANEL

SCREW:FlATHOPOllOR6-32X0.312"

lG

BRACKET:CONTROl

SWITCH

COVER

CONTROL

PANEl(FIG.

6-3)

SCREW:FlATHOPOllOR6-32X0.500"

lG

SCREW:PANHOPOllOR10-32X0.375"

lG

KNOB:JAOE

GREY

KNOB:JAOE

GREY

KNOB:

JADE

GREY

KNOB:JAOE

GREY

BASEl

PREAMP

BOARD

SCREWISST

PHH

POllOR4-40X1/4"W/lK PANEllCONTROl SPACER:0.250"

00,

4-40

TAP

SCREW:FlATHOPOllDR.-40

X

1/4"

KNOB:PUSHBUTTON.

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON.

JADE

GRAY

KNOB:PUSHBUTTON.

JADE

GRAY

KNOB:PUSHBUTTON.

JADE

GRAY

KNOBIPUSHBUTTON.

JADE

GRAY

KNOB:PUSHBUTTON.

JADE

GRAY

KNOB:PUSHBUTTON.

JADE

GRAY

KNOBIPUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

KNOB:PUSHBUTTON.

JADE

GRAY

KNOB:PUSHBUTTON,

JADE

GRAY

CONTROL

SWITCH

BOAROIFIG.

6-51

SCREW:SST

PHH

POllOR4-40X1/4"W/lK C:FXD

CER

0.05UF20'

400VDCW

C:FXD

CER

0.05UF20'

400VOCW

C:FXD

CER

0.05UF20'

400VOCW

C:FXO

CER

0.05UF20'

400VDCW

C:FXO

CER

0.05UF20'

400VOCW

C: FXI)

CER

0.47UF+1l0%

-20%

OIOOE:SllICON

100MA

180WV

DIODE:SllICON

100MA

180WY

OIOOE:SIlICON

100MA

180WY

OIOOE:SIlICON

100MA

180WY

CONNECTORIPC

EDGE(2X

10)20CONTACT

NUT:HEX

4-40X0.188"

ACROSS

FLAT

SCREW:PANHOPOllDR4-40X0.500"

lG

BRACKETIRIGHT

ANGLE

RIYET1SEMITUBUlAR

OVAL

HEAD

R:FXD

COMP21OHM

5'

1/4W

R1FXO

COMP

410

OHM

5'

1/4W

R:FXO

COMP

210

OHM

5'

1/4W

R:FXO

COMP

100

OHM5'1/4W

R:FXO

COMP21OHM5'1/4W

RIFXO

COMP21OHM5'1/4W

RIFXD

COMP21OHM5'1/4W

R1FXO

COMP21OHM

5'

1/4W

R1FXD

COMP21OHM

5'

1/4W

R:

FXD

COHI'100IlJ>15%1/4W

SWITCH:

PUSHBUTTON

BOARO:BlANK

PC

HEAT

POTENTIOMETER

BOARDIFIG.

6-6)

Mfr Code

28480 28480 00000 2B480 28480

28480 00000

18189

28480 00000

28480 00000 28480 00000 28480

00000 28480 00000 28480 28480

00000 00000 28480 28480 28480

28480 28480 00000 28480 00000

00000 28480 28480 28480 28480

28480 28480 28480 28480 28480

28480 28480 28480 00000 56289

56289 56289 56289 56289

56289

01263 01263

01263 01263 71785 00000

00000 28480 00000 01121 01121

01121 01121

01121

01121 01121

01121

28480 28480 28480

Mfr

Part Number

01154-60210 01154-00411 OBO 01154-00063 01154-00064

01754-00010 OBO KEP511-081800-00 01754-00080 OBO

01154-20311 OBD 01754-20320 OBO 01754-20330

OBO 01154-20350 OBO 01754-00110 01154-60240

OBD OBD 0370-1005 0370-1005 0370-1005

0370-1005 01754-00090 aBO 01154-00100 aBO

OBO 0310-2051 0310-2051 0370-2051 0370-2051

0310-2051 0370-2051 0370-2051 0370-2051 0370-2051

0310-2051 0310-2051 0370-2051 0370-2051 0370-2051

0310-2051 0370-2051 01754-60120 OBO 33C17A

33C11A 33CI1A 33Cl1

A

33CI1A

5C54C2-CHL

F03369 F03369

F03369 F03369 252-10-

30-

300

OBO aBO

516-5 OBO

CB

2105

CB

4115

CB

2115

CB

1015

CB

2105

CB

2105

CB

2105

CB

2105

CB

2105

Cll-l005

3101-1289 07754-00120 01754-60130

6-4

See

introductiontothis

section

for

ordering

information

07414-1

Model 7414A

Table 6-1. Replaceable Parts (continued)

Section VI

Replaceable Parts

Reference Designation

A2~2J25

A2A2Rl A2A2R2

A2A2R3 A2A2R4

A2A2Ul

A2A3

A2A3CR

1

A2A3CR2

A2A3Fl

A2A3141 A2A314Pl

A2A314P2

A2A3MP3

A2A314P4 A2A3Ql

A2A3Q2

A2A3Q3

A2A3Q4 A2A3Q5 A2A3Rl

A2A3R2

A2A3R3

A2A3R4

A2A3R!> A2A3R6

A2A3R7 A2A3R8

A2A3R9

A2A3RI0

A2A3Rli

A2A3R12

A2~3R13

A2A3R14 A2A3R15 A2A3R16

A2A3R17 A2A3R18

A2~3R19

A2A3R20 A2A3R21

A2A3R22

A2A3R23

A2A3Tl

A2A3Ul A2A3XFl A3

A3Cl A3C2

A3C3

A3C4

HP

Part Number

1251-0498 2340-0001 2200-0111 2100-3062 2100-3062

2100-3062 2100-3062

07754-00130

07754-60140 2360-0113

1901-0033 1901-0033 2110-0234 1010-0032 1205-0021

1205-0213 1205-0213 01250-21720 1853-0066 1854-0071

1854-0063

0340-0464

2190-0008 2360-0119 2500-0001

1853-0045 1200-0181 1853-0045 1200-0181 2100-2031

2100-2031 2100-2031 2100-2031 2100-2031 2100-2031

2100-2031 2100-2031

0683-6815

2100-1772

0761-0052 0686-1515

0683-1215 0811-1732 0686-3325 0686-2215

0761-0052 0686-1525 0686-3315 0683-4705 0683-4705

0686-3315 0683-5655 9100-1925

21QO-0757

2500-0006 07754-00140

2110-0269

07754:"60050

1251-1679 1400-0017

1251-2744 2190-0758

2190-0760

2530-0004

2580-0006

2680-0055

0180-2367

2510-0051

0180-2367

2510-0051

0180-2366

2360-0123

2480-0006 0150-0052 0160-2149

Qty

4

6

1 1 1

2 1

27

15 21

14 10 42

9

14

8

1

2

4

1

14

1 1

5

2

1 1

2

1

2

1

6

7

12

2

4

2

8

2

1

5

11

1

Description

CONNECTOR:PC

EDGE

1 X22CONTACT

NUT:HEX

4-40X0.188"

ACROSS

FLAT

SCREW:PAN Ho

POllDR4-40X0.500"

LG

R:VAR

COMP

500

OH14

10.

LIN 1/2W

R:VAR

C014P

500

OHM

10Z

LIN

1/2W

R:VAR

C014P

500

OH14

10.

LIN

1/2W

R:VAR

C014P

500

OH14

10.

LIN

1/2W

80ARo:8LANK

PC

PREA14PLIFIER

POWER

SUPPLYlFIG.

6-7)

SCREW:PANHOPOll

6-32

X

1/4

W/LK

DIOoE:SILICON

100MA 180WV

DIOoE:SILICON

100144 180WV

FUSE:O.l

A14P

250V

SLOW-BLOW METER: INOICATOR HEAT

DISSIPATOR

FOR

TO-3

TRANSISTOR

HEAT

SINK:TRANSISTOR

HEAT

SINK:TRANSISTOR

SPACER

TSTR:SI

PNP

TSTR:SI

NPNlSELECTED

FROM

2N3704)

TSTR:SI

NPN

INSULATOR

FOR

T0-3

TRANSISTOR

WASHER:SPLIT

LOCK

'6 SCREW:SST

PANHoPOIOR6-32

X

7/16"

NUT:HEX

6-32

THREAD

TSTR:SI

PNP

140UNTING:TRANSISTOR

PAD

TSTR:SI

·PNP

MOUNTING:TRANSISTOR

PAD

R:VAR 50K

OHM

10.

LIN

1/2W

R:VAR

50K

OHM

10.

LIN

1/2W

R:VAR 50K

OH14

10.

LIN

1/2W

R:VAR

50K

OHM

10Z

LIN

1/2W

R:VAR 50K

OHM

10.

LIN

1/2W

R:VAR

50K

OHM

10Z LIN 1/2W

R:VAR 50K

OHM

10Z

LIN

1/2W

R:VAR

50K

OHM

10l

LIN

1/2W

R:FXo

COMP

680

OHM5.1/4W

R:VARWW500

OH145.TYPE H

lW

R:FXD

METOX270

OHM5ZlW

R:FXo

C014P

150

OHM

5l

1/2W

R:FXo

COMP

120

OH14

5.

1/4W

R:FXoWW1

OHM5.3W

R:FXo

COMP

3300

OH14

5Z

1/2W

R:FXo

C014P

220

OH14

5.

1/2W

R:FXo

14ETOX270

OHM5.lW

R:FXo

C014P

1500

OHM

5l

1/2W

R:FXo

C014P

330

OHM

5l

1/2W

R:FXD

C014P47OHM

5Z 1/4W

R:FXo

C014P47OH14

5l

1/4W

R:FXo

C014P

330

OH14

5l

1/2W

R:FXo

C014P

5.6

MEGOHM

5Z

1/4W

TRANSFORMER:OUTPUT WASHER:FLAT

FOR'6HOW

NUT:HEX

6-32

THREAD

80ARo:8LANK

PC

CLIP:FUSE

0.250"

DIA

POWER

SUPPLYlFIG.

6-9)

CONNECTOR

8LOCK:14

CONTACT

CLA14P,CA8LE

NYLON

5/16

CONTACT:R , P CONNECTOR,16FEMALE WASHER:

FLAT

'8

WASHER:FLAT

no

SCREW:FLATHoSLOTDR8-32X0.625"

LG

NUT:HEX

8-32

THREAD

SCREW:SST

PANHDPOllDR10-32X0.500"

C:FXoALELECT

16000UF+75-10.

30VoCW

SCREW:PAN Ho

POllnR8-32X0.625"

LG

C:FXoALELECT

16000

UF

+75-10l

30VOCW

SCREW:PANHDPOllOR8-32X0.625"

LG

C:FXoALELECT

5400UF+75-10Z

30VDCW

SCREW:SST

PANHoPOIDR6-32

X

5/8"

NUT:HEX

6-32

THREAD

C:FXo

CER

0.05UF20.

400VOCW

CLA14P:CAPACITOR

Mfr Code

71785 00000 00000 28480 281t80

28480 28480 28480 28480

00000

07263

75915 18583 28480

13103 13103 28480 80131 28480

80131 13103

00000

80131 13103 80131 13103 28480

28480 28480 28480 28480 28480

28480 28480 01121 28480 28480

01121

01121 28480 01121

01121

28480

01121

01121 28480 00000

00000

28480

91506

28480 28480

71616 00779

00000

78189

00000

56289

00000

56289

00000

56289

00000

00000 56289 56289

Mfr

Part Number

252-22-30-350 080 080 2100-3062 2100-3062

2100-3062 2100-3062 07754-00130 07754-60140

080

F03369 F03369

313.100/S

MODEL

120

LC

1205-0021

22288

22288 01250-21720

2N4250

1854-0071 2N3055

43-03-1

080 080 080

2N4036

7717-5-N 2N4036 7717-5-N

2100-2031

C8

6815

2100-1772

0761-0052 E8

1515

C8

1215

0811-1732

E8

3325

E8

2215

0761-0052 E8

1525

E8

3315

C8

4705

C8

4705

E8

3315

C8

5655 9100-1925 080 080

07754~00140

6008-32CN 07754-60050 1251-1679 CPC-1953-58

66104-1 080 OBo OBo KEP511-081800-00

080 360163G0308o6A 080 36D163G030806A 080

32D542G030AD6A 080 080 33C17A 4586-97A

07414-1

See

introductiontothis

section

for

ordering

information

6-5

Section VI

Replaceable Parts

Table 6-1. Replaceable Parts (continued)

Model 7414A

Reference

Designation

A3CRl

A3CR2

A3CR3 A3CR4 A3CR5

A3CR6

A3El A3E2 A3Fl A3F2

A3F3

A3

fit

A3F5 A3Jl

A3J2

A3J3

A3Jft

A3J5

A3J6 A3J7

A3J9

A3Jl1

A3J12

A3J13

A3Jllt

A3J21

A3J22 A3J23

A3J2It

A3J31

A3J32 A31U A3l4Pl

A3MP2 A3l4P3

A3MP4

A314P5

A3MP6

HP Part Number

1901-0164 1901-0164 1901-0164 1901-0164 1901-0164

1901-0164 0360-1092 0360-1092

2110-0386

2110-0380

2110-0381

1251-1842

2200-0166

0590-0199 0360-1357

1251-1842

2200-0166

0590-0199 0360-1357

1251-1842

2200-0166

0590-0199 0360-1357

1251-1842

2200-0166 0590-0199 0360-1357 9100-3142

2200-0107

1251-2358 0361-0346

1251-1682

8120-0961 0590-0199

2200-0107

1251-1894

2200-0166 0590-0199

1251-1827

1251-1828

1251-1894

2200-0166

0590-0199

1251-1827

1251-1828

1251-1894

2200-0166

0590-0199

1251-1827

1251-1828

1251-1894

2200-0166

0590-0199

1251-1827

1251-1828 1251-1945

1251-1945

1251-1682

1251-1295

0490-0424 07754-00050

7120-0004 07754-60440

2680-0051 2680-0118 2420-0006

2360-0197 0180-0078

2510-0045

2580-0006 01250-21401

Qty

6

2

4

22

18

4

6

1

6

2

1

4

1 1 1

1

1 1

9

2

10

2

Description

oIOoE:SILICON 200PIV

3A

oIOoE:SILICON

200PIY

3A

OIOoE:SILICON 200PIV

3A

oIOOE:SILICON 200PIV

3A

OIOoE:SILICON 200PIV

3A

oIOoE:SILICON 200PIV

3A

TERMINAL

STRIP:8

TERMINALS

TERMINAL

STRIP:8

TERMINALS

FUSE:6

AMPAT250V

FUSE:2.5

AMPAT250VSLOW-BLOW

FUSE:3.0

AMPAT250V

SLOW-BLOW

FUSE:3.0

AMPAT250V

SLOW-BLOW

FUSE:3.0

AMPAT250V

SLOW-BLOW

CONNECTOR:16

FEMALE

CONTACT

SCREW:SST

FLATHOPOZIDR4-40

X

0.312"

NUT:EXT

LOCK

'4-40

TERMINAL:SOLOER

LUG

FOR'5SCREW

CONNECTOR:16

FEMALE

CONTACT

SCREW:SST

FLATHOPOZI

DR

4-40

X

0.312"

NUT:EXT

LOCK

'4-40

TERMINAL:SOLoER

LUG

FOR'5SCREW

CONNECTOR:16

FEMALE

CONTACT

SCREW:SST

FLATHoPOllDR4-40X0.312"

NUT:EXT

LOCK

'4-40

TERMINAL:SOLoER

LUG

FOR'5SCREW

CONNECTOR:16

FEMALE

CONTACT

SCREW:SST

FLATHoPOZIOR4-40X0.312"

NUT:EXT

LOCK

'4-40

TERMINAL:SOLoER

LUG

FOR'5SCREW

FILTER:LINE6A50-400

HZ

SCREW:POZIDR4-40

X

3/8

W/LOCK

CONNECTOR:AC

POWER,3FEMALE

CONTACT

RIVET:SEMITUBULAR

OVAL

HEAD

BOOY:R

, P

CONNECTOR14POSITION

CABLE:CONNECTOR2FEMALE

NUT:EXT

LOCK

'4-40

SCREW:POZIOR4-40

X

3/8

W/LOCK

CONNECTOR:5

MALE

CONTACT

SCREW:SST

FLATHoPOZIDR4-40X0.312"

NUT:EXT

LOCK

'4-40

EXTENSION:GUARo

GUARD

FOR

SPECIAL

PURPOSE

CONNECTOR

CONNECTOR:5

MALE

CONTACT

SCREW:SST

FLATHOPOZIOR4-40X0.312"

NUT:EXT

LOCK

'4-40

EXTENSION:GUARo GUARD

FOR

SPECIAL

PURPOSE

CONNECTOR

CONNECTOR:5

MALE

CONTACT

SCREW:SST

FLATHoPOllDR1t-40 X

0.312"

NUT:EXT

LOCK

'4-40

EXTENSION:GUARo

GUARD

FOR

SPECIAL

PURPOSE

CONNECTOR

CONNECTOR:5

MALE

CONTACT

SCREW:SST

FLATHoPOZIOR4-40X0.312"

NUT:EXT

LOCK

'4-40

EXTENSION:GUARo

GUARD

FOR

SPECIAL

PURPOSE

CONNECTOR

CoNNECTOR:I0

FEMALE

CONTACT

CONNECTOR:I0

FEMALE

CONTACT

CONNECTOR:I0

FEMALE

CONTACT

CONNECTOR:I0

FEMALE

CONTACT

BooY:R , P

CONNECTOR14POSITION

BOoY:R

, P

CONNECTOR,14POSITION

RELAy:oPoT

2AAT125

VAC

CHASSIS:POWER

SUPPLY

NAMEPLATE:SERIAL

CHASSIS

AND

TERMINAL

STRIP

SCREW:PANHoPOZIDR10-32X0.375"

LG

SCREW:FLATHoPOZIDR10-32X0.500"

LG

NUT:HEX

6-32

THREAD

SCREW:SST

PANHo6-32X.375

CLAMP:

CAPACITOR

MOUNTING

SCREW:PANHoPOZIDR8-32X0.375"

LG

NUT:HEX

8-32

THREAD

SPACER:POWER

SUPPLY

(ATTAGlllNG

PARTS,

NEXT PAG!.:)

Mfr Code

04713 04713 04713 04713 04713

04713 71785 71785 71400 71400

71400 71400 71400 28480 00000

00000

00000 28480 00000

00000

00000 28480 00000

00000

00000 28480

00000

00000 28480

00000

28480

00000 00779 28480

00000

28480

00000

28480 05245

28480

00000

28480 05245

28480

00000

28480

05245

28480

00000

28480

05245

281t80

28480

00779

78277

28480

00000

56289

00000

78189

28480

Mfr

Part Number

IN4721 IN4721 IN4121

IN4121

IN4721 IN4121

326-20-08-001 326-20-08-001 ABC-6-A MoA-2-112

MOA

3

t10A

3

MoA

3 1251-1842 OBO

OBo aBO 1251-1842 aBO OBo

OBo 1251-1842 OBo OBo OBo

1251-1842 OBo OBO aBO 9100-3142

OBO

1251-2358

OBo

201298-1

8120-0961 OBo

OBo

1251-1894 OBo OBo

1251-1821

SM205

1251-1894 OBo OBo

1251-1821

SM205

1251-1894

OBo

1251-1827

SM205

1251-1894

OBo

aBO

1251-1821

SM205

1251-1945

1251-1945 1251-1945

201298-1

201335-1

42R06-2500S-SIL

01154-00050

7120-0004

01754-60440 OBo

OBo OBo

OBO 4586-2B

OBO KEP511-081800-00

01250-21401

J

6-6

See

introductiontothis

section

for

ordering

information

07414-1

Model

7414A

Table 6-1. Replaceable Parts (continued)

Section

VI

Replaceable Parts

Reference

HP

Part Number

Qty

Description

Mfr

Part Number

Designation

Code

2200-0105

19

SCREW:PANHOPOZIOR4-40X0.312"

LG

00000

OBO

2360-0116

2

SCREW:SST

FLATHOPOllOR6-32

00000

OBO

2480-0006

NUT:HEX

6-32

THREAD

00000

OBO

01154-00340

1

COVER:TRANSFORMER

28480

01154-00340

2200-0105

SCREW:PANHOPOll

DR

4-40X0.312"

LG

00000

OBO

A3~P8

01154-00530

1

COVERzBOTTOM

28480

01154-00530

2200-0166

SCREW:SST

FLATHOPOll

OR

1t-40

X

0.312"

00000

OBO

A3,1tP9

01154-00540

1

SHIELO:DRIVER

28480

01151t-00540

2200-0105

SCREW:PANHOPOllDR4-40X0.312"

LG

00000

OBO

A314PI0

01826-40040

1

SHIELO:PC

BOARD

28480

01826-40040

2200-0105

SCREW:PANHOPOllOR4-40X0.312"

LG

00000

OBO

2200-0191

1

SCREW:PANHOSLOTOR4-40X1.000"

LG

00000

OBO

A3MPll

07154-00810

1

OECAL:POWER

SUPPLY,

CAUTION(NOT

SHOWN

I

28480

01154-00810

A3,1tP12

07826-40050

2

FOOT:RUBBER

28480

01826-40050

A3P7

1251-2446

1

CONNECTOR:12

PIN,

MINIATURE

28480

1251-2446

1400-0018

3

CLAMP:CABLE

NYLON

7/16

OIA

71616

CPC-1953-1A

2360-0185

SCREW:FLATHOPOllOR6-32

X

0.500"

LG

00000

OBO

2420-0006

NUT:HEX

6-32

THREAD

00000

OBO

0360-1458

1

TERMINAL:SOLOER

LUG

FOR

'5

SCREW

00000

OBO

A3P8

1251-0198

1

CONNECTOR:PC

EDGE(2X

6)

12

CONTACT

71185

251-06-30-261

1251-1005

3

GUIOEzR

, P

CONNECTOR,

SERIES M

00719

200390-4

1251-1006

2

GUIOE:R

& P

CONNECTOR,

SERIES M

00179

200389-4

1251-1694

1

CATCHES:R

& P

CONNECTOR

00179

201673-1

A3iU

0683-2735

6

R:FXO

COMP

27K

OHM

5.

1/4W

01121

CB

2735

A3R2

0683-2225

1

R:FXO

COMP

2.2K

OHM

5.

1/4W

01121

CB

2225

A3R3

0686-1515

R:FXO

COMP

150

OHM

5.

1/2W

01121

EB

1515

A3S1

3101-1395

1

SWITCH:PUSHBUTTON

OPOT-OB

16854

53-67280-121/AIH

2190-0735

1

WASHER:FLAT

METALLIC

1/2"

10

00000

OBO

A3S4

3101-1234

1

SWITCH:SLIOE

OPOT

82389

11A-1242

0361-0346

RIVET:SEMITUBULAR

OVAL

HEAD

00000

OBO

A3Tl

9100-2361

1

TRANSFORMER:POWER

28480

9100-2361

0590-0304

4

NUT:HEX

STL

1/4-20

THREAD

SIZE

00000

OBO

A3Ul

01754-00160

1

BOARO:BLANK

PC

28480

01754-00160

A3XFl

1400-0085

5

FUSEHOlOER

15915

342004

A3XF2

1400-0085

FUSEHOLOER

75915

342004

A3XF3

1400-0085

FUSEHOLOER

15915

342004

A3XF4

I1t00-0085

FUSEHOLOER

75915

342004

A3XF5

1400-0085

FUSEHOLOER

75915

342004

A3XKl

1200-0127

1

SOCKET:

TUBE,

OCTAL

71185

101-12-10-044

0361-0346

RIVET:SEMITUBULAR

OVAL

HEAD

00000

OBO

A3Wl

07154-60450

1

CABLE:SIGNAL

JUMPER

281t80

07154-60450

A3Al

01154-60150

1

TRANSFER

BOAROIFIG.

6-11)

28480

07154-60150

1251-1249

1

KEY:

POLARIZING

02660

143-953

2360-0117

9

SCREWzPAN

HO

POll

6-32

X

3/8

W/LK

00000

OBO

1251-2205

4

KEY:POLARIIING

FORPCCONNECTORS

71785

OBO

A3AICI

0180-0097

1

C:FXO

TANT.47UF

10.

35VOCW

56289

1500416X9035S2-0YS

A3AICRI

1901-0033

OIOOE:SILICON

100MA

180WV

07263

F03369

A3AlCR2

1901-0033

OIOOE:SILICON

100MA

180WV

01263

F03369

A3AlJIO

1251-1886

1

CONN:PC

30-CONTACT

(2XI5)

71785

252-15-30-340

2340-0001

NUT:HEX

1t-40 X

0.188"

ACROSS

FLAT

00000

OBD

2200-0113

34

SCREWzPANHOPOllOR4-40X0.625"

LG

00000

OBO

A3AlJ15

1251-1962

5

CONNECTORzPC(2X 10120CONTACT

71185

252-10-30-330

2340-0001

NUTzHEX

4-40X0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREWzPAN

HO

POllOR1t-40X0.625"

LG

00000

OBO

A3AlJl6

1251-1962

CONNECTOR:PC

(2X10)20CONTACT

71785

252-10-30-330

2340-0001

NUT:HEX

1t-1t0

X

0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREwzPANHOPOllOR4-40X0.625"

LG

00000

080

A3AlJ 17

1251-1962

CONNECTORzPC(2X

10)

20

CONTACT

71185

252-10-30-330

2340-0001

NUT:HEX

4-40

X

0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREWzPAN

HO

POllOR4-40X0.625"

LG

00000

OBO

A3AlJl8

1251-1962

CONNECTOR:PC

(2X10)20CONTACT

71785

252-10-30-330

231t0-0001

NUT:HEX

1t-40

X

0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREWzPAN

HO

POllDR4-40X0.625"

LG

00000

OBO

A3AIJl9

1251-1962

CONNECTORzPC(2X

10)

20

CONTACT

71785

252-10-30-330

2340-0001

NUTzHEX

4-40X0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREW:PANHOPOllOR4-40X0.625"

LG

00000

080

A3AlJ20

1251-1881

1

CONNECTOR:PC

1t4

CONTACTS(2X22)

71185

252-22-30-340

2340-0001

NUT:HEX

4-40X0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREW:PANHOPOllOR4-40X0.625"

LG

00000

OBO

A3AlJ21

1251-1968

2

CONNECTORzPC10TUNING

FORK

TYPE

CONT

02660

143-010-01-1158

2340-0001

NUT:HEX

4-40X0.188"

ACROSS

FLAT

00000

OBO

2200-0113

SCREW:PANHOPOllOR4-40X0.625"

LG

00000

OBO

A3AlJ28

1251-1968

CONNECTOR:PC10TUNING

FORK

TYPE

CONT

02660

143-010-07-1158

See

introductiontothis

section

for

ordering

information

07414-1

6-7

Section

VI

Replaceable Parts

Table 6-1. Replaceable Parts (continued)

Model

7414A

Reference

HP

Part Number

Qty

Description

Mfr

Part Number

Designation

Code

2340-0001

NUT:HEX

4-40X0.188"

ACROSS

FLAT

00000

080

2200-0113

SCRE

.. :PAN

HD

POZI

DR

~-40

X

0.625-

LG

00000

080

A3UJ29

1251-2422

2

CONNECTOR:PC

12

CONTACT

91662

00-8129-012-603-002

A3Al

J30

1251-2422

CONNECTOR:PC12CONTACT

91662

00-8129-012-603-002

A3AlUl

0115~00150 1

80ARo:8LANK

PC

28480

0115~-00150

0360-1491

21

TERMINAL:SOLoER

STUD

28480

0360-1491

0403-0063

1

8UMPER:RU88ER 8UTTON,

PRESS

TYPE

13134

FSP

115201

A4

01154-60110

DRIVER

AMPLIFIERIFIG.

6-13)

28~80

01154-60110

A4C1

0180-0106

8

C:FXo

ELECT60UF

20~

6VOCW

28480

0180-0106

A4C2

0180-0106

C:FXo

ELECT60UF

20~

6VoCW

28480

0180-0106

A4C3

0160-015~

4

C:FXo

MICAMY0.0022

UF

10~

200VoCW

56289

192PZ2292-PTS

A4C4

0160-0165

12

C:FXoMY0.056

UF

10~

lOOVoCW

56289

192P56392-PTS

A4C5

0160-0165

C:FXDMY0.056

UF

10~

200VOCW

56289

192P56392-PTS

A4C6

0160-0165

C:FXDMY0.056

UF

10~

200VoCW

56289

192P56392-PTS

A4C7

NOT

ASSIGNED

A4C8

0160-0201

4

C:FXo

MYLAR

O.OlUF5.lOOVDCW

28480

0160-0201

A4CR1

1901-0033

oIODE:SIlICON

100MA

180WV

07263

F03369

A4CR2

1901-0033

oIOoE:SILICON

100MA 180WV

01263

F03369

A4CR3

1902-3182

8

DIODE 8REAKoOWN:SILICON

12.1V

5.

28480

1902-3182

A4CR4

1902-3182

DIODE

8REAKoOWN:SILICON

12.1V

5~

28480

1902-3182

A4CR5

1901-0033

oIODE:SILICON

100MA

180WV

01263

F03369

A4MP1

01154-20340

6

HEATSINK

28480

01154-20340

2190-0159

6

WASHER:FLAT

'10

00000

080

2190-0180

6

WASHER:FLAT

8LACK

FI8ER

'8

00000

080

2360-0119

SCREW:SST

PAN

Ho

POI

DR

6-32

X

1116"

00000

080

2500-0001

NUT:HEX

6-32

THREAD

00000

080

2680-0151

6

SCRE

.. :PANHDSLOTDR10-32X2.250"LG

00000

080

A401

1853-0066

TSTR:SI

PNP

80131

2N4250

A402

1854-0011

TSTR:SI

NPNISELECTED

FROM

2N3104)

28480

1854-0011

A403

1853-0066

TSTR:SI

PNP

80131

2N4250

A404

1854-0039

4

TSTR:SI

NPN

80131

2N3053

1200-0181

MOUNTING:TRANSISTOR

PAD

13103

1111-5-N

A405

1853-0066

TSTR:SI

PNP

80131

2N4250

A406

1853-0223

4

TSTR:SI

PNP

80131

2N4902

0340-0464

INSULATOR

FOR

TO-3

TRANSISTOR

13103

43-03-1

2190-0007

18

WASHER:INT

LOCK

'6

28480

2190-0001

2360-0201

28

SCREW:SST PHIL

POll

DR

6-32X0.500

00000

080

2500-0001

NUT:HEX

6-32

THREAD

00000

080

A401

1853-0045

TSTR:SI

PNP

80131

2N4036

1200-0181

MOUNTING:TRANSISToR

PAD

13103

1111-5-N

A408

1854-0011

TSTR:SI

NPNISELECTEo

FROM

2N31041

28480

1854-

0011

A409

1854-0063

TSTR:SI

NPN

80131

2N3055

0340-0464

INSULATOR

FOR

T0-3

TRANSISTOR

13103

43-03-1

2190-0007

WASHER:INT

LOCK

'6

28480

2190-0001

2360-0201

SCREW:SST PHIL

POll

DR

6-32X0.500

00000

080

2500-0001

NUT:HEX

6-32

THREAD

00000

OBo

A4~10

1854-0409

4

TSTR:SI

NPN

80131

2N5210

A4011

1853-0066

TSTR:SI

PNP

80131

2N4250

A4012

1854-0011

TSTR:SI

NPNISELECTEo

FROM

2N31041

28480

1854-0011

A4013

1854-0063

TSTR:SI

NPN

80131

2N3055

0340-0464

INSULATOR

FOR

TO-3

TRANSISTOR

13103

43-03-1

2190-0008

I·IASHER:

LOCK

NO.

6

00000

OBo

2360-0201

SCREW:SST PHIL POZIDR6-32X0.500

00000

080

2500-0001

NUT:HEX

6-32

THREAD

00000

080

A4R

1

0683-1035

22

R:FXo

COMP

10K

OHM

5~

1/4W

01121

C8

1035

A4R2

0698-6909

12

R:FXo

FLM

45.3K

OHM

0.5~

1/8W

28480

0698-6909

A4R3

0151-0452

4

R:FXo

MET

FLM

21.4K

OHM1~1/8W

28480

0151-0452

A4R4

0683-6835

4

R:FXo

COMP

68K

OHM

5'

1/4W

01121

C8

6835

A4R5

0698-6909

R:FXo

FLM

45.3K

OHM

0.5~

1/8

..

28480

0698-6909

A4Rb

0683-1055

4

R:FXo

COMP1MEGOHM

5~

1/4W

01121

C8

1055

A4R1

0698-5143

4

R:FXo

FLM

395K

OHM

0.25'

1/8W

28480

0698-5143

A4R8

0683-1035

R:FXo

COMP

10K

OHM

5~

1/4W

01121

CB

1035

A4R9

2100-2464

12

R:VARWW20K

OHM

10~

1W

28480

2100-2464

A4RI0

0698-3136

8

R:FXo

MET

FLM

11.8K

OHM1~218W

19101

MF4C

T-O

A4Rll

0683-1035

R:FXo

COMP

10K

OHM

5~

1/4

..

01121

C8

1035

A4R12

0698-3136

R:FXo

MET

FLM

11.8K

OHM

l'

218W

19701

MF4C

T-O

A4R13

2100-2464

R:VAR

"W

20K

OHM

10~

1W

28480

2100-2464

A4R14

0683-1035

R:FXo

COMP

10K

OHM

5~

1/4W

01121

C8

1035

A4R15

0698-7382

4

R:FXo

FLM

103.5K

OHM

0.1'

1/8W

28480

0698-7382

A4R16

0683-5635

4

R:FXo

COMP

56K

OHMS

5~

1/4W

01121

C8

5635

A4R17

0683-1515

14

R:FXo

COMP

150

OHM5.1/4W

01121

C8

1515

A4R18

0686-5605

8

R:FXo

COMP56OHM

5~

1/2

..

01121

E8

5605

A4R19

0683-1015

R:FXD

COMP

100

OHM

5~

1/4W

01121

C8

1015

A4R20

0811-2619

4

R:FXoWW1.2

OHM1~3'1

28480

0811-2619

A4R21

0761-0026

4

R:FXo

METOX220

OHM5~1W

28480

0761-0026

See

introductiontothis

section

for

ordf'ling

information

J

1

6-8

07414-1

Model 7414A

Table 6-1. Replaceable Parts (continued)

Section

VI

Replaceable Parts

Reference

Designation

AttR 22

A4R23 AItR

ZIt

A4R25 AltR2b

A4R27

AltR 2 8

A4R29 A4R30 A4R31

A4R32 A4R33

A4~34

A4R3b A4R37

A4R38 A4R39 A4R40 A4Hl A4R42

AltRlt3 A4Rlt4 A4Ul A4'J2 A4U3

A5 Ab A7 A8 A8

A8C

1 A8C2 A8C3 A8CIt A8C5

A8C~

A8C7 A8C8 A8C9 A8CIO

A8Cll A8C12 A8C

13 A8C

lit

A8C15 A8Clb

A8C17 A8C18 A8C19 A8C20

A8C21 A8C22 A8C23 A8CRl A811

A8/PI

A801 A8'l2 A803 A8'lit

A805

A80b

HP

Part Number

0686-2715 0686-1525 0686-1825

Ob86-5605

0683-1515 0683-1015

0811-1732 0683-2235

2100-2464

0757-0123 0683-2735

0683-1035 0683-1025 0698-6909 0683-1065

0757-0869 0683-2235 0683-1015 0683-1515 0686-3915

0683-1015 0811-1732

1820-0203 1820-0203

07754-00170

07754-60180

0140-0200

0150-0052 0160-2222 0160-0174 0180-1830

0180-0291 0150-0052 0180-0291 0150-0052 0160-2891

0150-0052 0160-0174 0160-0161 0160-0174 0140-0200

0160-2222 0160-0174 0160-0174 0160-0174 0150-0052

0150-0052 0160-0174 0160-0174

1901-0033 9140-0210

07754-20340 2190-0759 2190-,0780

2360-0119 2500-0001

2680-0157 1853-0066

1853-0066 1854-0071 1854-0071

1854-0063 0340-0464 2190-0007 2360-0201 2500-0001

Qty

4

7

9

4

7

4

8

4

16

2

4

2

Description

R:FXD

COMP

270

OHM

5~

1/2W

R:FXD

COMP

1500

OHM

S~

1/2W

R:FXD

COMP

1800

OHM

5~

1/2W

R:FXD

COMPS6OHM

5~

1/2W

R:FXD

COMP

150

OHM

5~

1/4W

R:FXD

COMP

100

OHM

5~

1/4W

R:FXDWW1

OHM5~3W

R:FXD

COMP

22K

OHM

S~

1/4W

R:VARWW20K

OHM

101

lW

R:FXD

MET

FLM

34.8K

OHM

1~

1/8W

R:FXD

COMP

27K

OHM

S~

1/4W

R:FXD

COMP

10K

OHM

S~

1/4W

R:FXD

COMP

1000

OHM

S~

1/4W

R:FXD

FLM

45.3K

OHM

0.51

1/8W

R:FXD

COMP

10M

OHM

S~

1/4W

R:FXD

MET

FlM

681K

OHM

1~

1/2W

R:FXD

COMP

22K

OHM

5~

1/4W

R:FXD

COMP

100

OHM

S~

1/4W

R:FXD

COMP

150

OHM

5~

1/4W

R:FXD

COMP

390

OHM

5~

1/2W

R:FXD

COMP

100

OHM

5~

1/4W

R:FXDWW1

OHMS~3W IC:OPERATIONAL AMPLIFIER IC:OPERATIONAL AMPLIFIER 80ARD:BLANK

PC

SAMEASA4,

USE

PREFIX

A5

SAMEASA4,

USE

PREFIX

A6

SAMEASA4,

USE

PREFIX

A7

REGULATOR/OSCILLATOR BOARD:60

HZ

(EXCEPT

OPT

008,

FIG.

6-15)

C:FXD

MICA

390

PF

5~

C:FXD

CER

0.05

UF

20~

400VOCW

C:FXD

MICA

1500

PF5~300VDCW

C:FXD

CER

0.47

UF

+80-20~

25VDCW

C:FXD

ELECT

5.b

UF

10~

35VDCW

C:FXD ELECT

1.0

UF

10~

35VDCW

C:FXD

CER

0.05

UF

20~

400VDCW

C:FXD ELECT

1.0

UF

10~

3SVDCW

C:FXD

CER

0.05

UF

20~

400VDCW

C:FXD

MICA33PF2~500VDCW

C:FXD

CER

0.05

UF

20~

400VDCW

C:FXD

CER

0.47

UF

+80-20~

25VDCW

C:FXDMY0.01

UF

10~

200VDCW

C:FXD

CER

0.47

UF

+80-20~

2SVDCW

C:FXD

MICA

390

PF

5~

C:FXD

MICA

1500

PFS~300VOCW

C:FXD

CER

0.47

UF

+80-20~

25VDCW

C:FXD

CER

0.47

UF

+80-20~

2SVDCW

C:FXD

CER

0.47

UF

+80-20~

25VDCW

C:FXD

CER

O.OS

UF

20~

400VDCW

C:FXD

CER

0.05

UF

20~

400VDCW

C:FXD

CER

0.47

UF

+80-20~

25VDCW

C:FXD

CER

0.47

UF

+80-20~

25VDCW

DIODE:SILICON

100MA 180WV

COIL/CHOKE

100

UH

5~

HEAT

SINK

WASHER:FLAT

no

WASHER:FLAT

BLACK

FIBER

'8

SCREW:SST

PANHDPOZDR6-32

X

7/16"

NUT:HEX

6-32

THREAD

SCREW:PANHDSLOTDR10-32X2.250"LG TSTR:SI

PNP

TSTR:SI

PNP

TSTR:SI

NPN(SELECTED

FROM

2N37041

TSTR:SI

NPN(SELECTED

FROM

2N37041

TSTR:SI

NPN

INSULATOR

FOR

TO-3

TRANSISTOR

WASHER:INT

LOCK

'6

SCREW:SST PHIL POZIOR6-32X0.500

NUT:HEX

6-32

THREAD

TSTR:SI

NPN

INSULATOR

FOR

TO-3

TRANSISTOR

WASHER:

INT

LOCK

'6

SCREW:SST

PHIl

POZIOR6-32X0.500

NUTsHEX

6-32

THREAD

Mfr Code

01121 01121 01121 01121 01121

01121 28480 01121 28480 28480

01121 01121 01121 28480 01121

28480 01121 01121 01121 01121

01121 28480 07263 07263 28480

28480

72136 56289 28480

5b289

56289 56289

56289 56289 56289 28480

56289 56289 56289 56289 72136

28480 56289 56289 56289 56289

56289 56289 56289 07263 82142

28480 00000 00000 00000 00000

00000 80131 80131 28480 28480

80131 13103 28480

00000

00000 80131

13103 28480

00000

Mfr

Part Number

EB

2715

EB

1525

EB

182S

EB

5605

CB

1515

CB

1015 0811-1732 CB

2235

2100-24b4

0757-0123 CB

2735 CB

1035 CB

1025 0698-6909 CB

1065 0757-0869

CB

223S

CB

1015 CB

1515 EB

3915 CB

1015 0811-I732 SL8940 SL8940 07754-00170

07754-60180

RDM15F391-J3C 33C17

A 0160-2222 SCll

B7S-CML

1500565X903582

DYS

lS0DI05X9035A2-DYS 33C17A 150DI05X9035A2-DYS 33C17A 0160-2891

33Cl7A 5C1187S-CML

192PI0392-PTS 5C1187S-CML RDH15F391-J3C

0160-2222 5CllB7S-CML 5CllB7S-CML SC11B7S-CML 33C17

A

33C17A 5CllB7S-CHL 5CllB7S-CML FD3369 lS-1315-12J

07754-~0340

080 OBO OBD OBO

OBO 2N4250 2N4250 1854-0071 1854-0071

2N3055

43-03-1 2190-0007

080 OBO

2N3055

43-03-1 2190-0007 OBD 080

07414-1

See

introductiontothis

section

for

ordering

information

6-9

Section VI

Replaceable Parts

Table

6-1.

Replaceable Parts (continued)

Model 7414A

Reference

Designation

A807 A808 A809

A8Q10 A8011

A8Q12

A8013 A8014 A8015 A8016

A8017

A8R1

A8R2

A8R3

A8R4 A8'l5 A8R6 A8R7 A8R8

A8R9 A8R10 A8Rll A8R12 A8R13

A8R14 A8R15 A8R16 A8R17 A8R18

A8R19 A8R20 A8R21 A8R22 A8R23

A8R24 A8R25 A8R26 A8R27 A8R28

A8R29 A8R30 A8R31 A8R32 A8R33

A8R34 A8R35 A8R36 A8R37 A8R38

A8;1.39 A8R40 A8RItl A8R42 A8R43

A8Tl A8U1 A8U2 A8U3 A8U4

A8U5 A8U6 A8U7

A8U8 A9

HP

Part Number

1854-0011

1853-0066 1854-0022 1200-0181 1854-0011

1854-0071 1854-0063 0340-0464 2190-0007

2360-0201 2500-0001

1854-0011 1854-0071 1853-0066 1853-0066

1853-0045 1200-0181 0698-6338 2100-1703 0698-5323

0683-3325 0698-4002 0683-1515 0683-2725 0811-1732

0686-1515 0698-4157 0757-0442 0698-6338 0698-6338

0683-4725 0811-1732 0683-1025 0698-6273 0698-6866

0698-5323 0683-4725 0683-1245 0683-5625 0683-1005

0683-1005 0686-6815 0811-1830 0683-2735 0683-1835

0683-1825 0811-1202 0683-3335 0683-3335 0683-3335

0683-1035 0683-3325 0683-4715 0683-1545 0683-1825

0683-1825 0683-1545 0683-4715 0683-1825 0757-0460

07754-60470 1826-0010 1820-0196 1820-0056 1820-0055

1820-0056 1820-0055 1820-0430 0340-0464

2360-0195 2190-0007

2500-0001 07754-00180 07754-60181

Qty

6

2

2 4

2

8

2

6

4

1 2

2

3

5

2

4

2

1

Description

TSTR:SI

NPNCSELECTED

FROM

2N37041

TSTR:SI

PNP

TSTR:SI

NPN

MOUNTING:TRANSISTOR

PAD

TSTR:SI

·NPNCSELECTED

FROM

2N37041

TSTR:SI

NPNISELECTED

FROM

2N37041

TSTR:SI

NPN

INSULATOR

FOR

T0-3

TRANSISTOR

WASHER:INT

LOCK

'6

SCREW:SST

PHIL

POZIOR6-32X0.500

NUT:HEX

6-32

THREAD

TSTR:SI

NPNCSELECTED

FROM

2N37041

TSTR:SI

NPNCSELECTED

FROM

2N37041

TSTR:SI

PNP

TSTR:SI

PNP

TSTR:SI

PNP

MOUNTING:TRANSISTOR

PAD

R:FXD

FLM5KOHMl'1/8W

R:VARWW2K

OHM

10'

1W

R:FXD

FLM4KOHM

0.5'

1/8W

R:FXD

CaMP

3300

OHM5'1/4W

R:FXD

MET

FLM5KOHMl'1/8W

R:FXD

COMP

150

OHM5'1/4W

R:FXO

CaMP

2700

OHM5'1/4W

R:FXDWW1

OHM5l3W

R:FXO

CaMP

150

OHM5'1/2W

R:FXD

FLM

10K

OHM

0.1'

1/8W

R:FXO

MET

FLM

10.0K

OHM

l'

1/8W

R:FXO

FLM5KOHM

It

1/8W

R:FXO

FLM5KOHMl'1/8W

R:FXO

CaMP

4700

OHM5'1/4W

R:FXOWW1

OHM5'3W

R:FXO

CaMP

1000

OHM

5l

1/4W

R:FXD

FLM

1500

OHM

O.ll

1/8W

R:FXD

FLM

2.182K

OHM

0.25'

1/8W

R:FXD

FLM4KOHM

0.5t

1/8W

R:FXO

COMP

4700

OHM5l1/4W

R:FXD

CaMP

120K

OHM

5'

1/4W

R:FXD

CaMP

5600

OHM

5l

1/4W

R:FXD

CaMP10OHM

5'

1/4W

R:FXD

CaMP10OHM

5f

1/4W

R:FXD

CaMP

680

OHM5l1/2W

R:FXOWW0.5

OHM

lot

3W

R:FXD

CaMP

27K

OHM

5t

1/4W

R:FXD

CaMP

18K

OHM

5t

1/4W

R:FXD

COMP

1800

OHM

5t

1/4W

R:FXOWW50

OHM5t3W

R:FXD

CaMP

33K

OHM

5t

1/4W

R:FXO

COMP

33K

OHM

5t

1/4W

R:FXD

CaMP

33K

OHM

5'

1/4W

R:FXO

COMP

10K

OHM5t1/4W

R:FXD

CaMP

3300

OHM

5t

1/4W

R:FXO

COMP

470

OHM

5t

1/4W

R:FXD

CaMP

150K

OHM5'1/4W

R:FXD

CaMP

1800

OHM

5l

1/4W

R:FXO

CaMP

1800

OHM

5t

1/4W

R:FXO

COMP

150K

OHM

5t

1/4W

R:FXD

CaMP

470

OHM

5t

1/4W

R:FXO

CaMP

1800

OHM5t1/4W

R:FXO

MET

FLM

61.9K

OHM

It

1/8W

IC:LINEAR.

VOLTAGE

REGULATOR

IC:LINEAR

VOLTAGE

REGULATORCINPUTI

IC:TTL DIVIDEBY1210MHZ

MIN.

IC:TTL

DECADE

COUNTER10MHZ

MIN.

IC:TTL DIVIDEBY12 10

MHZ

MIN.

IC:TTL

DECADE

COUNTER10MHZ

MIN.

IC:LINEAR.

VOLTAGE

REGULATOR

5V

INSULATOR

FOR

TO-]

TRANSISTOR

SCREW:PANHDPOllOR6-32X0.312"

LG

WASHER:INT

LOCK

'6

NUT:HEX

6-32

THREAD

BOARD:BLANK

PC

REGULATOR/OSCILLATOR

BOARD:50

HZ

COPT

008.

FIG.

6-151

Mfr Code

28480 80131 07263 13103 28480

28480 80131 13103 28480

00000

00000 28480

28480 80131 80131

80131

13103 28480

28480 28480

01121 28480 01121 01121

28480 01121

28480 28480

01121 28480 01121 28480

28480 28480

01121 01121 01121 01121

01121

28480

01121 01121

01121

28480

01121 01121 01121

01121

01121 01121 01121 01121

28480

28480 01295

01295 01295

01295

28480

13103

00000

28480

00000

28480

Mfr

Part Number

1854-0071 2N4250 S17843 7717-5-N 1854-0071

1854-0071 2N3055 43-03-1 2190-0007 aBO

080

1854-0071 1854-

0071 2N4250 2N4250

2N4036

7717-5-N 0698-6338 2100-1703 0698-5323

CB

3325 0698-4002 CB

1515 CB

2725 0811-1732

EB

1515 0698-4157 0757-0442 0698-6338 0698-6338

CB

4725 0811-1732 CB

1025 0698-6273 0698-6866

0698-5323 CB

4725 CB

1245 CB

5625 CB

1005 CB

1005 EB

6815 0811-1830 CB

2735 CB

1835 CB

1825 0811-1202 CB

3335

ca

3335 CB

3335

ca

1035

ca

3325

ca

4115 CB

1545 CB

1825

ca

1825

ca

1545

ca

4715

ca

1825 0757-0460

1826-0010

1820-0196

SN7492N SN7490N

SN7492N SN7490N 1820-0430

43-03-1

oao

2190-0007

aBO

07754-00180 07754-60181

j

6-10

See

introductiontothis

section

for

ordering

information

07414-1

Model 7414A

Table

6-1.

Replaceable Parts (continued)

Section

VI

Replaceable Parts

Reference Designation

A'JCl A9C2 A9C3

A9C~

A9C5 A9C&

A9C7 A9C8 A9C9 A9CI0

A9Cll A9CIZ A9C13

A9Cl~

A9C15 A9Cl&

A9C17 A9C18 A9C19 A9CZO

A9CZl A9C22 A9C23 A9CRl A911

A9HPl

A901 A902 A903 A90ft A905

A906

A9:17 A908

A9J9 A9010

A9011 A9012

A9013 A901ft A9015 A9016 A9011

A9U

A9R2 A9R3 A9Rft

A9R5 A9R!> A9R1 A9R8 A9R9

A9RI0 A9Rll A9R12 A9R13 A9R14

HP

Part Number

0140-0200 0150-0052 0160-2222 0160-0114 0180-1830

0180-0291 0150-0052 0180-0291 0150-0052 0160-2891

0150-0052 0160-0114 0160-0161 0160-0114 0140-0200

0160-2222 0160-0114 0160-0114 0160-0114 0150-0052

0150-0052 0160-0114 0160-0114 1901-0033 9140-0210

01154-20340 2190-0159 2190-0180

2360-0119 2500-0001 2680-0151

1853-0066 1853-0066 1854-0011 1854-0011 1854-0063

0340-0464 2360-0201 2190-0007

2500-0001

1854-0063 0340-0464

2360-0201 2190-0008 2500-0001

1854-0011 1853-0066

1854-0022

1200-0181

1854-0011

1854-0011 1854-0063

0340-0464 2360-0201

2190-0007

2500-0001 1854-0011

1854-0011

1853-0066 1853-0066 1853-0045

1200-0181 0698-6338 2100-1103 0698-5323 0683-3325

0698-4002 0683-1515 0683-2125 0811-1132 0686-1515

0698-4151 0157-0442 0698-6338 0698-6338 0683-4725

Qty

Description

C:FXO

MICA

390PF5l

C:FXO

CER

0.05

UF

20l

ftOOVOCW

C:FXD

MICA

1500PF5l

300VDCW

C:FXD

CER

0.41UF+80-20l

25VDCW

C:FXD

ELECT

5.6UF10l

35VDCW

C:FXD ELECT

1.0UF10l

35VDCW

C:FXD

CER

0.05

UF

20l

400VOCW

C:FXO ELECT

1.0UF10l

35VDCW

C:FXD

CER

0.05

UF

20l

400VDCW

C:FXD

MICA33PF2l500VDCW

C:FXD

CER

0.05

UF

20l

400VDCW

C:FXD

CER

0.41UF+80-20l

25VDCW

C:FXDMY0.01

UF

10l

200VDCW

C:FXO

CER

0.41UF+80-20l

25VDCW

C:FXO

MICA

390PF5l

C:FXO

MICA

1500PF5l

300VDCW

C:FXD

CER

0.41UF+80-20l

25VDCW

C:FXD

CER

0.41UF+80-20l

25VDCW

C:FXD

CER

0.41UF+80-20l

25VDCW

C:FXO

CER

0.05

UF

20l

400VDCW

C:FXO

CER

0.05

UF

20l

400VDCW

C:FXD

CER

0.ft1UF+80-20l

25VDCW

C:FXO

CER

0.41UF+80-20l

25VDCW

DIODE:SILICON

100MA 180WV

COlLI

CHOKE

100UH5l

HEAT

SINK

WASHER:FlAT

flO

WASHER:FLAT

BLACK

FIBER

'8

SCREW:SST

PANHOPOlDR6-32X7/16"

NUT:HEX

6-32

THREAD

SCREW:PANHDSLOTDR10-32X2.250"LG TSTR:SI

PNP

TSTR:SI

PNP

TSTR:SI

NPNISELECTED

FROM

2N3104)

TSTR:SI

NPNISELECTED

FROM

2N31041

TSTR:SI

NPN

INSULATOR

FOR

T0-3

TRANSISTOR

SCREW:SST

PHIL

POllDR6-32X0.500

WASHER: LOCK NO. 6

NUT:HEX

6-32

THREAD

TSTRISI

NPN

INSULATOR

FOR

T0-3

TRANSISTOR

SCREW:SST PHIL

POllDR6-32X0.500

WASHER:SPLIT

LOCK

'6

NUT:HEX

6-32

THREAD

TSTR:SI

NPNISELECTED

FROM

2N3104)

TSTR:SI

PNP

TSTR:SI

NPN

MOUNTING:TRANSISTOR

PAD

TSTR:SI

NPNISElECTED

FROM

2N3704)

TSTR:SI

NPNISELECTED

FROM

2N31041

TSTR:SI

NPN

INSULATOR

FOR

T0-3

TRANSISTOR

SCREW:SST PHIL

POllDR6-32X0.500

WASHER: LOCK

:-10.

6

NUT:HEX

6-32

THREAD

TSTR:SI

·NPNISELECTED

FROM

2N3104)

TSTRISI

NPNISELECTED

FROM

2N31041

TSTR:SI

PNP

TSTR:SI

PNP

TSTR:SI

PNP

MOUNTING:TRANSISTOR

PAD

R:FXD

FLM5KOHMIII/BM

R:VARWW2K

OHM

10l

1W

R:FXD

FUI

4K

Oil!'! 0.57.

1/8"

R:FXD

COMP

3300

OHM

51 1/4W

R:FXD

MET

FLM5KOHM

Il

1/8W

R:FXD CaMP

150

OHM5l114M

R:FXD

COMP

2100

OHM

5l

1/4W

R:FXDMW1

OHM5l3W

R:FXD

COMP

150

OHM5l112M

R:FXD

FLM

10K

OHM

O.ll

1/8W

R:FXD

MET

FLM

10.0K

OHMII1/8W

R:FXD

FLM5KOHM

II

118M

R:FXD

FLM5KOHM

Il

118M

R:FXD

COMP

4100

OHM

5l

114M

Mfr

Code

72136 56289 28480 56289 56289

56289 56289 562B9 562B9 284BO

562B9 56289 56289 56289 12136

284BO 56289 56289 56289 562B9

56289 562B9 56289 07263 82142

28480 00000 00000

00000

00000 00000

B0131 80131 284BO 2B480

80131 13103

00000 00000

00000 80131

13103

00000 00000

00000 28480

B0131 07263 13103 28480

28480

80131 13103

00000 00000

00000 28480

2B480 80131 80131 80131

13103 28480 28480

19701 01121

284BO 01121 01121 28480 01121

28480 28480 28480 28480 01121

Mfr

Part Number

RDMI5F391-J3C 33C11A 0160-2222 5CllB7S-CML

1500565X9035B2

OYS

1500105X9035A2-DYS 33CI1A 1500105X9035A2-DYS 33CI1A 0160-2891

33CI1A 5CllB1S-CML

192P10392-PTS 5CllB1S-CML RDMI5F391-J3C

0160-2222 5CllB1S-CMl 5CllB1S-CML 5Cll

B1S-CMl

33C11A 33CI1A

5CllB7S-CMl 5CllB1S-CMl

F03369 15-1315-12J

01154-20340 OBO OBO

aBO

OBO aBO

2N4250

2N4250 1854-0011

1854-0011

2N3055 43-03-1

aBO aBO

OBO

2N3055 43-03-1

OBO aBO

OBO 1854-0011

2N4250

S11843 1717-5-N 1854-0011

1854-0011 2N3055

43-03-1 aBO OBD OBO

1854-0011 1854-0011

2N4250

2N4250 2N4036

7111-5-N 0698-6338

2100-1703

~IF4C

r-2

CB

3325

0698-4002 CB

1515

CB

2125 0811-1132 EB

1515 069B-4151

0151-0442 0698-6338 0698-6338 CB

4125

07414-1

See

introductiontothis

section

for

ordering

information

6-11

Section

VI

Replaceable Parts

Table 6-1. Replaceable Parts (continued)

Model 7414A

Reference Designation

A9R15

A9R16 A9R17

A9U8

A9R19 A9R20 A9R21 A9R22 A9R23 A9R21t

A9R25 A9R26

A9iU7 A9R28

A9R29 A9R30 A9R31 A9R32 A9R33

A9R34 A9R35 A9R36 A9R31 A9R38

A9R39 A9Rlt0 A9R

Itl

A9Rlt2 A9Tl

A9'Jl A9U2 A9U3 A9UIt

A9J5 A9U6 A9U7

119

8

AI0

AI081

AI0:::1 AI0El

AI0MPl AlOMP2 AI0MP3

AI0MP4 AI0MP5 AI0MP6 AI0MP7

Al0HP8

IIl0MP9 AlOHPI0 AI0HP11 AI0HP12

AI0MP13 AlOHPlit AI0HP15

HP

Part Number

0811-1732 0683-1025 0698-6273 0698-6866 06911-5323

0683-4725

0683-1245 0683-5625 0683-1005 0683-1005

0683-1025 0811-1830

0683-1835 0683-2235

0683-1825 0811-1202 0683-3335 0683-3335 0683-3335

0683-1035 0683-3325

0683-4715 0683-1545 0683-1825

0683-1825 0683-1545 0683-4715 0683-1825 9100-2353

1826-0010

1820-0196

1820-0055

1820-0056

1820-0055

1820-0430 0340-0464

2360-0195

2190-0008 2500-0001

07754-00180 07751t-60250

2510-0053 3140-0337 1400-0017

2510-0121 2580-0006 0160-3614 0360-1289 0360-1279

2360-0123 2480-0006 1430-0451

1460-0798

1460-1227 1460-1228 1500-0290

1500-0294 1500-0295

07754-

0011

0

2510-0121

07754-00220 07754-00210 07754-00261 07754-00330

07754-00350

2200-0164 07754-00610

2510-001t5

07754-

00630

Qty

4

1

2

1

1 1 1 1

1

1 1

1

1 1

2

1

Description

R:FXOWW1

OHM5'3W

RzFXO

COMP

1000

OHM

5~

1/4W

R:FXO

FLM

1500

OHM

0.1'

1/8W

RzFXO

FLM

2.182K

OHM

0.25'

1/8W

R:FXDFL14K

OIlH

0.5%

1/8W

R:FXD

CaMP

4700

OHM

5~

1/4W

R:FXO

COMP

120K

OHM

5'

1/4W

R:FXD

COMP

5600

OHM

5~

1/4W

R:FXD

COMP10OHM

5'

1/4W

R:FXO

COMP10OHM

5~

1/4W

R:FXD

COMP

1000

OHM

5~

1/4W

R:FXDWW0.5

OHM

10'

3W

R:FXD

COMP

18K

OHM

5~

1/4W

R:FXD

COMP

22K

OHM

5'

1/4W

R:FXD

COMP

1800

OHM

5~

1/4W

R:FXDWW50

OHM5~3W

R:FXD

COMP

33K

OHM

5~

1/4W

R:FXO

COMP

33K

OHM

5~

1/4W

R:FXD

COMP

33K

OHM

5~

1/4W

R:FXD

COMP

10K

OHM

5'

1/4W

R:FXD

COMP

3300

OHM

5~

1/4W

RzFXO

COMP

470

OHM

5'

1/4W

RzFXO

COMP

150K

OHM

5~

1/4W

RzFXD

COMP

1800

OHM

5'

1/4W

R:FXD

COMP

1800

OHM

5~

1/4W

R:FXD

COMP

150K

OHM

5'

1/4W

RzFXD

COMP

470

OHM

5'

1/4W

R:FXD

COMP

1800

OHM

5'

1/4W

TRANSFORMER:OSCILLATOR

IC:LINEAR,

VOLTAGE

REGULATOR

IC:LINEAR

VOLTAGE

REGULATORIINPUT)

IC:TTL

DECADE

COUNTER10MHZ

MIN.

IC:TTL

DECADE

COUNTER10MHZ

MIN.

IC:TTL

DIVIDEBY1210MHZ

MIN.

IC:TTL

DECADE

COUNTER10MHZ

MIN.

IC:LINEAR,

VOLTAGE

REGULATOR

5V

INSULATOR

FOR

TG-3

TRANSISTOR

SCREW:PAN

HD

POZIOR6-32X0.312"

LG

WASHER:SPLIT

LOCK

'6

NUT:HEX

6-32

THREAD

BOARD:BLANK

PC

DRIVE

UNITIFIG.

6-16)

SCREW:PANHOPOZIOR8-32X0.750"

LG

MOTOR:450

RPM

60HZ

(EXCEPT OPTION

08)

CLAMP,CABLE

NYLON

5/16

SCREW:FLATHOPOZIOR8-32X0.375"LG NUT:HEX

8-32

THREAD

C:PAPER

AND

OIL BARRIER BLOCK:2 TERMINALS TERMINAL:JUMPER

FOR'6SCREW

SCREW:SST

PANHDPOZOR6-32

X

5/8"

NUT:HEX

6-32

THREAD

SPROCKET:20 TOOTH,

3/16

PITCH

160HZUNITS

ONLY)

SPRING: COMPRESSION

SPR I

NG:

PRESSURE SPRING:PRESSURE SPROCKET:25

TOOTH

CHAIN

DRIVE:0.188"

PITCH

CHAIN

DRIVE:0.188"

PITCH

TRAY

SCREW:FLATHOPOZIOR8-32X0.315"LG TABLE

LI

NK:

TABL

E

PLATE:SIDE,

RIGHT

ARM:

PIVOT

GUIOE:PAPER SCREW:FLAT

HO

POZI

4-40

X

3/16

CHASSIS SCREW:PAN

HO

POZIOR8-32X0.375"

LG

BRAKE

ARM

Mfr Code

28480 01121 281t80

28480 01121

01121 01121 01121 01121

01121

28480 01121 01121

01121

28480 01121 01121 01121

01121 01121 01121 01121 01121

01121 01121 01121 01121 28480

28480

28480 01295 01295

01295 01295 28480 13103 00000

00000

00000 28480

28480 00000

28480

71616

00000 78189 28480

98410 00000

00000

00000 28480

28480 28480

28480 00000

28480 28480

28480

00000

28480

00000

28480

Mfr

Part Number

0811-1732 CB

1025

0698-6273

0698-6866

HF4C

r-2

CB

4725

CB

1245

CB

5625

CB

1005

CB

1005

CB

1025

0811-1830 CB

1835

CB

2235

CB

1825 0811-1202 CB

3335 CB

1035 CB

3325 CB

4715 CB

1545 CB

1825 CB

1545 CB

4715 CB

1825 9100-2353

1826-0010 1820-0196 SN7490N SN7490N

SN7492N SN7490N 1820-0430 43-03-1 OBO

OBO OBO 07754-00180

07754-60250 OBD

3140-0337

CPC-1953-5B OBO

KEP511-081800-00 0160-3614 35002-3523 OBD

OBD OBD 1430-0451

OBD 1460-1221

1460-1228 1500-0290 1500-0294 1500-0295

07754-00110 OBD

01754-00220 07754-00210 01754-00261 01754-00330

01754-00350 OBO 01754-00610 OBO

01754-00630

J

I

J

6-12

See

introductiontothis

section

for

ordering

information

07414-1

Model 7414A

Table 6-1. Replaceable Parts (continued)

Section

VI

Replaceable Parts

Reference Designation

AlOMPl6 AU"'Pl1 AI0MP18 AI0"'Pl9

AU>'lP20

AlOMP21

Al014P22 AlO"'P23

AlOMP2it AlOMP25 AI0MP26

AI0MP21 AlOMP28

Al:>'lP

29

AI0MP30 AI0"'P3l AIJ"'P32

AlOMP33 AI0'lPH AlOMP35

AlOMP3b

AlOMP

31

AI014P38

AI0MP39

AI0MP~O

AI0MP~1

AI0"'Pft2

AlOMP~3

AI0MP44

AI0P9 AI01l1

AIJXCI AlOAl AI0AIMPl AlOAlMP2

AI0Al'lP3

AI0AlMP~

AlOAl'lP5 AI0AlMPb AI0Al>4P7

AI0AIMP8 Al 0

ttl

MP9

AI0Al>4PI0 AlJAIMP11 AI0AlMP12 AI0lIMP13 AI0AlMP14

AlOttlMP15 AI0ttlMP16

AI0ttlMP17

HP Part Number

07154-

00680 07754-00800 07754-

00700 07754-

0073

0

2360-0117 2480-0006

07754-00790

0520-0174 0610-0002 07154-

20280 2360-0182

0775~-20

360 2360-0183 07754-20510 07754-20400

07154-200\10 0510-0053 07754-20430 07754-20440 07754-20470

07754-20480

0510-0053

07754-20500 07754-20510 07754-20520

07754-20530 07754-20590 07754-20660 2360-0117 07754-20700

2200-0107 07754-20750 2200-0166 07754-0U810 0520-0174

07754-

20800

07754-60300

07754-60400 07754-

0085

0

2200-0103 07754-00820

07754-20380 2190-0736 2190-0754 8120-0962

07754-60200 1400-0082 2360-0115 2360-0182 2480-0006

0160-2729 2740-0003 07754-60040 2360-0121 1410-0974

1460-1210 1460-1211 1500-0288 2510-0185 1500-0291

07754-00590 2360-0115 07754-20060 07754-20070

07754-20080

07754-20090 07754-20100 07754-

20110

07754-20120

07754-20130 07754-20140

07754-20190 2190-0763 0570-1009

07754-20230

Qty

1 1

1

3

2

5

6

1

4

1

2

1

2 1

2

4

1 1

1

1 1 1

1

1 1

1

2

13

2

4

2

4 4

1

4

1

1 2

2

1 1

2

1

2

2 2

2

Description

FELT:

BRAKE

RETAINER:ROO, PAPER

TABLE PLATE:SHIM GUIDE SCREW:PANHOpall

6-32

x

3/8

W/LK

NUT:HEX

6-32

THREAD

SPRING:BRAKE,

LEAF

TYPE

SCREW:PAN

HO

pallOR

2-56X0.250"

LG

NUT:HEX,

BRASS

2-56

THREAD CLAMP:FELT

SCREW:FLAT

HO

pall

-OR

6-32X0.312"

LG MOUNT:GALVANOMETER SCREW:FLATHOpallOR

6-32X0.375"LG

STRIP

NUTIBAR)

SHAFT

ROO

RING:RETAINING

FOR

0.188"

OIA

SHAFT SPACER SHAFT SHAFT

SHAFT RING:RETAINING

FOR

0.188"

OIA

SHAFT BEARING STRIP

NUTlBARI

SCREW:AOJUSTMENT SPACER:MOTOR

MOUNTING,

PLASTIC KEY:SHAFT SPACER SCREW:PAN

HO

pall

6-32

x

-3/8

W/LK

BLOCK:GUARO SCREW:POlIOR4-40

X

3/8

W/LOCK BAR:BRAKE SCREW:SST

FLATHOpallOR

4-40X0.312"

SPRING,

TABLE

SCREW:PANHOpallOR

2-56X0.250"

LG

PAO:MOTOR ROLLER:PRESSURE PANElILEFT COVER SCREW:SST

PHH

pallOR

4-40X1/4"W/LK

PLATEN ROLLER: DRIVE WASHER:fLAT

FOR

3/8"

HOW

WASHER:FLAT

FOR

3/8"

HOW

PLUG:2

CONTACT

14,

HOTOR

CA8LE: INTERLOCK

CLAMP:CABLE

3/8"

WIDE

SCREW:PANHOpall

6-32x5/16

W/LK

SCREW:fLATHOpall

OR

6-32X0.312"

LG

NUT:HEX

6-32

THREAD

BRACKET:CAPACITOR,

CAOHIUH

PLATED

NUT:HEX STL

10-32

X

3/8

GEARBOXIFIG.

6-17)

SCREW:POlIOR6-32

X

1/2"

W/LOCK

BEARING:BALL, RADIAL SPRING:TORSION

SPRING:TORSION GEAR:SPROCKET

20

TOOTH

SCREW:FLATHOPOllDR8-32X0.437"

LG

GEAR:SPROCKET36TOOTH COVER

SCREW:PANHOpall

6-32x5/16

W/LK

GEAR:52

TOOTH

GEAR:104

TOOTH

GEAR:78

TOOTH

GEAR:52

AND78TOOTH

GEAR:36

AND78TOOTH

GEAR:120

TOOTH

GEAR:39

TOOTH

GEAR:36

AND

117

TOOTH

GEAR:120

TOOTH

SHAFT:INPUTOROUTPUT

WASHER:FLAT.6HOW

SCREW:SHOULOER

PANHOSLOTDR4-40

THO

PLATE:SIOE

Mfr Code

28480 28480

00000

00000 28480 00000 00000 28480

00000 28480 00000 28480 28480

28480 79136 28480 28480 28480

28480 79136 28480

28480 28480

00000

28480

00000

28480 00000 28480 00000

28480 28480 28480 28480 00000

28480

00000

28480 28480

09922

00000

00000 00000

1It655 78189 28480 00000 21335

28480 28480 28480 00000 28480

28480

00000

28480 28480 28480

28480 28480 28480 28480 28480

28480

00000 00000 28480

Mfr

Part Number

07154-00680 07754-00800

07154-00700 07754-00730 080

aBO 07754-00790 aBO aBO 07754-20280

aBO 07754-20360 aBO 07754-20510 07754-20400

07754-20410 5555-18-S-MO 07754-20430 07754-20440 07154-20470

07754-20480 5555-18-S-HO 01754-20500

07754-20520

01754-20530 07754-20590 07154-20660 aBO 01754-20700

aBO 01754-20750 aBO 07754-00810 aBO

01754-20800 07754-60300 01754-60400 01754-00850

aBO 07754-00820

01754-20380

aBO aBO 8120-0962

01754-60200 HP-2N aBO aBO aBO

30744-36 510-101810-51 07154-60040 aBO S7KOO

1460-1210

1460-1211 1500-0288 aBO

1500-0291

07754-00590 aBO 01754-20060

07754-20070 01754-20080

07754-20090

01754-20100

07754-2011

0

01754-20120

07754-20130 01754-20140

07754-20190 aBO aBO 01754-20230

07414-1

See

introductiontothis

section

for

ordering

information

6-13

Section

VI

Replaceable Parts

Table

6-1.

Replaceable Parts (continued)

Model 7414A

Reference Designation

A10U14P18

A10Al14P19

AI0Al14P20

A10AU4P21 AlOAl14P22

A10AlMP23 A10Al'4P24 A10Al14P25 A10AlMP26 All All14P1 All'4P2 AllMP3

AllMP4

AllMP5

AllMP6

A1U4P1

1111

'1'3

AllWl

Alll/1MPI

Allll1P1 A12 A13 A14 A15

A1511 A15MPI

A15MP2 A15MP3 A15MP4 A15W1 A16

A17 A11C18 AI1C19 Al1C21 A11CR24

A11CR25 A11CR26 Al1MPI AI1Q19

A11Q20 A17Q21 A11R31 AI1R38 Al

H39

HP Part Number

2200-0113 07754-20390 3030-0441

01250-21101 01754-20720

0490-0951

2200-0113

01754-20760 0570-0174

01754-60420 07754-40010

07754-60280 2190-0833 01754-00840

2200-0101

07754-00880

2200-0111

07754-60070

2680-0055

01754-20630

3030-0044 07754-00550

07754-20600

07154-20600

01754-

00390 2340-0006 2200-0105

3050-0269

07754-60430

0520-0173

0610-0002 07754-00040

2360-0107 2360-0111

on

5'f-OO'f:JO

07754-60080

07754-

0065

0

0360-1045 1400-0017

2200-0109

2340-0006 2360-0115 2420-0006

1251-0198

07754-60350 2200-0105

0550-0045 0380-0787 2190-0007 2200-0165

0520-0185 2200-0071 2200-0101 0490-0417

07754-00440

01754-00450 07754-00830 01754-60310

07754-60360

868-500AC13 0160-2838

0160-2771

0160-0158 1902-0551

1901-0026 1901-0026

801-157 1853-0045 1205-0095

1850-0180 1850-0180 0686-6825 0686-1005 0686-6825

Qty

2

2 4

8

1

2

1

4

1

2

4

6

4 4

4

4 4

4 8

4

4 4

If

4 4 4

4

2

2 2

2

2 2

1 1 1

1

4

2

1

Description

SCREW:PANHOpallDR4-40X0.625"

LG

LOCKNUT:SHAFT

END

PLAY

SCREW:SET

4-40X0.625"

LG

SPACER: SllAIT

LOCK

NUT

COUPL

ING

RELAY:

ACTUATOR

SCREW:PANHOPOllDR4-40X0.625"

LG

HUll:

SPROCKET

SCREW:SET

SOCKETDR8-32X0.250"

LG

ASSY:

COllAR

CLUTCH ASSY:CABLE

WASHER:FLAT

5/16"

OIA

SHAFT

SPACER:SOLENOID

SCREW:PAN

HO

POll

4-40X3/16

W/LK

SPRING, SOLENOIU

ADJUSTHENT

SCIU::HS,

PANHDPOZI 4-40 x

0.5

IN

LG

GALVANOMETERCFIG.

6-18)

SCREW:SST

PANHOpall

DR

10-32X0.500"

ARM:

PIVOT

SCREW:SOCKET

CAP

2-56X0.375"

CLIP:STYLUS

RETAINER

STYlUS

BUMP

ER

STYLUS

BUMP

ER

RETAINER:

BUMPER

NUT:HEX

4-40X0.250"

ACROSS

FLAT

SCREW:PANHOpallDR4-40X0.312"

LG

WASHER:FLAT'5HOW PIVOT,

TAIL

SCREW:PAN

HO

pallOR

2-56X0.lB8"

LG

NUT:HEX,

BRASS

2-56

THREAD

ARM:STYLUS PRESSURE ADJUSTING SCREW:PAN

HO

PHILDR6-32X1.B15"

LG

SCREW:PANHOpallOR

6-32X0.lB8"

LG

PL/ITC: SPllr.r.r.

CABLE:GALVANOMETER BRACKET:CONNECTOR LUG:SOLOER

FOR'4SCREW

CLAMP,CABLE

NYLON

5/16

SCREW:PANHOpallOR

4-40X0.438"

LG

NUT:HEX

4-40X0.250"

ACROSS

FLAT

SCREW:PANHOPOll

6-32X5/16

W/LK

NUT:HEX

6-32

THREAD

CONNECTOR:PC

EDGE12X6)12

CONTACT

SAMEASAll,

USE

PREFIX A12

SAMEASAll,

USE

PREFIX A13

SAMEASAll,

USE

PREFIX A14

MARKERIFIG.

6-19)

SCREW:PANHOpall

DR

4-40X0.312"

LG

SCREW:SST

PANHOSLOTDR5-40X0.125"

STANOOFF:INSULATEO,

HEX

BASE

WASHER:INT

LOCK

'6

SCREW:FLATHOpall

DR

4-40

X

1/4"

SCREW:PANHOPOllDR2-56X0.125"

LG

SCREW:FILHOSLOT

OR

4-~O

X

0.125"

LG

SCREW:PANHOPOll

4-40X3/16

W/LK

RELAY:24V 3A i

115

VAC

BRACKET:

MARKER

BRACKET:

MARKER

BRACKET

:l1MIT PEN:MARKER CABLEIMARKER

~lARKER,

TIllED,

SANEASA

15,

USE

PRJ:FlX A

16

OSCILLATOR:2400

HICOPT

004,

FIG.

6-201

C:FXO PAPER

0.33

UF

10~

C:FXOMY0.022

UF

10~

200VOCW

C:FXOMY0.0056

UF

10~

200VOCW

DIODE BREAKOOWN:6.19V

5~

OIOOE:SILICON

0.75A

200PIV

OIOOE:SILICON

0.15A

200PIV BRACKET TSTR:SI

PNP

HEAT

SINK:TRANSISTOR

TSTR:GE

PNP

TSTR:GE

PNP

RIFXO CaMP

6800

OHMS5~1/2W

R:FXO

CaMP10OHM5~1/2W

R:FXO CaMP

6800

OHMS5~1/2W

Mfr Code

00000

284BO 08664

28480 28480

00000 28480 00000 28480 28480

28480 00000 28480

00000

28480 00000

28480 00000 28480 70276 28480

28480 28480 28480 00000 00000

00000 28480 00000 00000 28480

00000 00000

28480 28480 00000

71616 00000 00000

00000

00000 71785

28480 00000

00000 00000 28480

00000

00000 00000

00000

17342 28480

28480 28480 28480 28480

284BO 2B480 14655 56289 28480

04713 04713 28480

80131 13103

80131

01121

Mfr

Part Number

aBO 01754-20390 080

01754-20720 0490-0957

aBO

07754-20760

OBO

01754-60420

07154-40010 01754-60280

OBO 01754-00840

aBO

01754-

OIlU

01754-60070 OBO 01754-20630 aBO 01754-00550

01754-20600 01754-20600 01754-00390 OBO OBO

aBO 07154-60430 OBO aBO 01754-00040

OBO OBO

~n5'f-f)nlf3"

07154-60080 07754-00650 aBO

CPC-1953-5B OBO OBO aBO OBO

251-06-30-261

07154-60350 aBO

OBO aBO 2190-0007 aBO

aBO

aBO aBO KS-1087-1 07754-00440

01754-00450 01754-00830 07754-60310 01754-60360

868-500AC

13 0160-2838 WMF2522

192P56292-PTS 1902-0551

SR1358-8

801-157 2N4036 2225B

2N1374 2N13

74

EB

6825

EB

1005

EB

6825

6-14

See

introductiontothis

section

for

ordering

information

07414-1

Model 7414A

Table

6-1.

Replaceable Parts (continued)

Section VI

Replaceable Parts

I

I I

Reference Designation

A1H40 A11R41 AIH42 A11R43 A11T1

A11TM1 A11TMB

A11lJl A18 A1BC15 AIBC16 A1BC11

A1BCR21 A1BCR22 AIBCR23 A1BMPl Al8Q12

AIBH3 A18R21 A18R22 A18R23 A18R24

A18R25 AIBR26 A18R21 A1BT4

AIBUI A19

A19MP1

A19..

P2 A19MP3 A19MP4 A19MP5 A19MP6

ABMP1 A19 ..

PB A19MP9 A19MPI0 A19 ..

Pll

A

19~U'12

A19

...

P13

A19MP14

A19~P15

A19MP16 Al9MP11

A19MP18 A19MP19 A19MP20 A19MP21 A19MP22

A1914P23 A19MP24

A20

HP Part Number

0686-5615 0686-5615 0686-4115 0686-4715 9100-1990

710P-1

0360-1491

0362-0215

0837-0031

0837-0037 752-353

868-500AC14

0160-2835 0180-0183 0180-0183

1901-0026

1902-0202

801-157

1850-0181

1850-0181 0686-1815

0811-1983 0686-1825 0686-1825

0686-1815 06

B6-182

5

0686-1025 9100-1967 0340-0191

1200-0080 752-363

01754-63499

2110-0305

2110-0380 2110-0381 2110-0386 5060-4641

5060-4642 6040-0220

6040-0222 8120-1395 8710-0865 8710-0875 01754-00760 07414-91999 07850-01520

14023A

9270-0878 1251-1895

1251-1895 1251-1895 1251-1895

1251-1944 1251-1944

07154-60350

2200-0105

Qty

2

8

2

1 1

1

2

1

1 1

1

1 1

1

1 1 1

1 1

1

5

1

4

Description

R:FXD

COMP

560

OHM~1/2W

R:FXD

COMP

560

OHM

~

1/2W

R:FXD

COMP

470

OHM

5~

1/2W

R:FXD

COMP

470

OHM

5~

1/2W

TRANSFORMER:TOROIDAL OSC. WASHER

TERMINAL:SOLOER

STUD

TERMINATION:CRIMP

TYPE

FOR

0.058"

DIA

THERMISTOR:310

OHM

10~

THERMISTOR:310

OHM

10~

BOARD:BLANK

PC

OSCILLATOR:440 HZ(OPT

005,

FIG.

6-21)

C:FXO PAPER 2

UF

20~

C:FXDALELECT10UF

+75-10~

50VDCW

C:FXDALELECT10UF

+75-10~

50VDCW

DIODE:SILICON

0.15A

200PIV

DIODE:SILICON

0.15A

200PIV

DIODE

BREAKDOWN:15.0V5~1W

BRACKET

TSTR:GE

PNP

TSTR:GE

PNP

R:FXD

COMP

180

OHM

5~

1/2W

R:FXDWW7.5

OHM5~3W

R:FXD

COMP

1800

OHM

5~

1/2W

R:FXD

COMP

1800

OHM

5~

1/2W

R:FXD

COMP

180

OHM

5~

1/2W

R:FXD

COMP

1800

OHM

5~

1/2W

R:FXD

COMP

1000

OHM

5~

1/2W

TRANSFORMER:TOROIOAL OSC.

INSULATOR:WAFER

FOR'8HOW

MTG.

INSULATOR:TRANSISTOR

MTG.

BOARO:BLANK

PC

ACCESSORIES(FIG.

6-22)

FUSE:1.25

AMP

SLOW

BLOW

(FOR 230V SERVICE) FUSE:2.5

AMPAT250VSLOW-BLOW

FUSE:3.0

AMPAT250V

SLOW-BLOW

FUSE:6

AMPAT250V

KIT:MONITOR

CONNECTOR

KIT:PWR/REMOTE

CONNECTOR

OIL:TURBINE

3/4

OZ.

LUBRICANTfl

OZ.)

CABLE

ASSY:AC

POWER

COROl8 FT)

WRENCH:ALLEN,

HEX

KEY

SCREWDRIVER LATCH:CABLE

HANUAI.:OPl::RATlNG

AND

SERVICE

PAPER:STYLUS LAPPING TESTER:STYLUS PRESSURE

PEPJ'lAPAPER, Z-FOLD,

GRI:I:N

GRID

CONNECTOR:5

FEMALE

CONTACT

CONNECTOR:5

FEMALE

CONTACT

CONNECTOR:5

FEMALE

CONTACT

CONNECTOR:5

FEMALE

CONTACT

CONNECTOR:HEXAGONAl10MALE

CONTACT

CONNECTOR:HEXAGONAl10MALE

CONTACT

CONNECTOR:HEXAGONAL10MALE

CONTACT

CONNECTOR:HEXAGONAl10MALE

CONTACT

MARKERIFIGURE

6-19)

EXTRA

OPTION

015.

SAMEASA15,EXCEPT PREFIX A20

SCREW:PAN

HD

POllDR4-40X0.312-

LG

Mfr Code

01121 01121

01121

28480 28480

28480

00719 83186 83186

28480 28480 28480 56289

56289

04713

04113

28480 28480

80131

01121

28480

01121

28480

76530 71185

28480 28480

11400

71400 71400 11400 28480 28480

01829 00000 70903 00000 00000

28480

28480 28480 28480

28480 28480 28480 28480

28480 28480 28480

28480

00000

Mfr

Part Number

EB

5615

EB

5615

EB

4715

EB

4715

9100-1990 710P-1

0360-1491 60598-6 23E3 23E3

752-353 868-500AC14 0160-2835 300106G050CB2-DSM 30D106G050CB2-DSM

SR1358-8 SR1358-8 1902-0202 801-157 2N2552

2N2552 EB

1815 0811-1983 EB

1825 EB

1825 E8

1815 EB

1825 EB

1025 9100-1961 294832

294834 752-363

07154-63499 MOX-1-1/4A

MOA-2-112 MDA

3 ABC-6-A 5060-4641 5060-4642

K614L011 OBD KH-1077 OBD OBD 07154-00760 07414-91999 01850-01520 14023A

1251-1895 1251-1895

1251-1895 1251-I895 1251-1944 1251-1944

1251-1944 1251-1944 07754-60350

07754-60350

OBO

07414-1

See

introductiontothis

section

for

ordering

information

6-15

Section

VI

Model

7414A

I I

Replaceable Part:

Table 6-1. Replaceable Parts (continued)

Reference

HP Part Number

Qty

Description

Mfr

Part Number

I

Designation

Code

I

07754-60600

RACK

t-nJNT

KIT

(OPTION

00l)

I

14-q:o--()S79

4

SLIDE

28480

1490-0819

2510-0123

24

SCREW:FLAT

HO

POll

OR

8-32

X

0.500"

LG

00000

080

I

01060-00470

11

STRIP

NUT

28480

01060-00470

07154-

00380

6

8RACKET:BACK

28480

07754-00380

2680-0051

28

SCREW:PANHOPOZIOR10-32

X

0.375"

LG

00000

OBO

07754-00400

6

BRACKET

:FRONT

28480

07754-00400

2680-0051

SCREW:PANHOPOZIOR10-32X0.315"

LG

00000

OBO

07754-

00640

3

COVER:RECOROER

28480

07754-00640

2360-0181

16

SCREW:FLATHOPOZIOR6-32

X

0.250"

LG

00000

OBO

07754-00670

12

PLATE:IVT

28480

07754-

006

70

07758-00512

1

BRACKET,

PAPER

TAKElJP

28480

07758-00512

077

58-20372

1

PN>EL,

PAPER

TAKElJP

BRACKET

28480

077

58-20372

07754-fi0410

1

ASSY:

PAPER

TI\KBJP

28480

07754-60410

50

HZ: OPTION

008

ADO

THE

FOLLOWING

FOR

OPTION

008

0160-2554

1

C:FXO PAPER

0.84

UF

61

220

VACW

56289

153P51-0CS

2420-0021

2

SCREW:FLATHOSLOTOR8-32

X

0.688"

LG

00000

OBO

2190-0780

6

WASHER:FLAT

BLACK

FIBER

.8

00000

OBO

2580-0006

NUT:HEX

8-32

THREAD

78189

KEP511-081800-00

1500-0289

1

SPROCKET:24

TOOTH

28480

1500-0289

3140-0398

1

MOTDR:SYNCHRONOUS

375

RPM

115V

50HZ

28480

3140-0398

07754-60181

1

REGULATOR/OSCILLATOR

BOARO:50

HZ

28480

07154-60181

DELETE

FOLLOWING

FOR

OPTION

008

REF.

07754-60250

1430-0451

SPROCKET

2510-0121

SCREW

j

3140-0337

MOTOR

07754-60180

OSC. REG.

MOUNTEDIN1064B

MOBILE

CART

OPTION

054

Ilt90-0819

1

SLIDE

28480

1490-0879

0590-0199

It

NUT:EXT

LOCK

'4-40

00000

OBO

2200-0107

It

SCREW:POII

DR

4-ltO

X

3/8

W/lOCK

00000

OBO

2680-0055

3

SCREW:SST

PANHOPOllOR10-32

X

0.500"

00000

OBO

Ilt9O-0960

1

SLIOES:CHASSIS

17.0"

LONG

284BO

1490-0960

2190-0702

12

WASHER:SHOULOER

0.500"

00

0.200"

10

00000

OBO

2510-0121

12

SCREW:FLATHOPOllOR8-32X0.375"LG

00000

OBO

2680-0107

12

SCREW:PANHOPOllOR10-32X0.750"

LG

00000

OBO

2510-0123

SCREW:

FLAT

HO

POZI

OR

8-32X0.500"

LG

00000

OBO

01064-00041

2

BRACKET

28480

01064-00041

2680-0118

16

SCREW:FlAT

HO

POll

OR

10-32X0.500"

lG

00000

OBO

01064-00042

1

8RACKET

28480

01064-00042

2680-0118

SCREW:FlATHOPOll

OR

10-32

X

0.500"

LG

00000

OBO

01064-00050

2

BRACKET:1 INCH

DRAWER

28480

01064-00050

2680-0055

SCREW:SST

PANHOPOll

OR

10-32X0.500"

00000

OBO

01754-00711

1

01

VI OER:

DRAWER

284BO

07754-00711

01810-00090

1

SPRING:

DRAWER

28480

07810-00090

2480-0006

2

NUT:HEX

6-32

THREAD

00000

OBO

J

1

See

introductiontothis

section

for

ordering

information

6-16

07414-1

Model 7414A

Table

6-1. Replaceable Parts (continued)

Section VI

Replaceable Parts

Reference

HP Part Number

Qty

Description

Mfr

Part Number

Designation

Code

2360-0115

4

SCREW:PAN

HO

pall

6-32x5/16

W/LK

00000

aBO

01810-60202

1

ORAWER:l

INCH

28480

01810-60202

2360-0111

2

SCREW:PAN

HO

pall

6-32x3/8

W/LK

00000

aBO

0590-0499

4

NUT:ACORN

BRASS

6-32

THREAD

00000

OBO

2680-0051

6

SCREW:PANHOPOllDR10-32

X

0.375"

LG

00000

aBO

2140-0003

2

NUT:HEX

STL

10-32x3/8

78189

510-101810-51

0362-0155

2

TERMINATION:CRIMP

LUG

FOR

110

SCREW

00000

080

8160-0018

2

BRAID:COPPER

WIRE

122")

10903

8660

2190-0012

1

WASHER:LOCKPHBRl

'10

00000

OBO

07B10-60130

2

GROUNDWIRE

2B480

01810-60130

2360-0115

SCREW:PANHDPOll

6-32

X

5/16

W/LK

00000

OBO

08824-00041

1

BLANK

PANEL

28480

08824-00041

21

Qo-Ol02

WASHER:SHOULDER

0.500"000.200"

10

00000

OBO

2680-0101

SCREW:PANHOPOllDR10-32X0.750"

LG

00000

aBO

05QO-0804

20

NUT:SHEET

METAL

10-32X0.550"

LG

18553

C-31758-10-32-24

BENCH-TOP ENCLOSUREISTANOARO SYSTEM)

01754-60261

1

CASE

28480

01154-60261

2190-0102

WASHER:SHOULOER

0.500"000.200"

10

00000

aBO

2680-0101

SCREW:PANHDpall

DR

10-32X0.750"

LG

00000

aBO

5060-0161

4

FOOT

ASSY:FM

28480

5060-0761

1124-2010

2

INSERT:

NAME

PLATE

28480

1124-2010

01154-

00242

1

SHIPPING

BRACKET,

RIGHT

28480

01154-0024?

07154-00241

1

SHIPPING

BRACKET:LEFT

28480

01154-00241

2680-0051

SCREW:PANHOPOll

DR

10-32

X

0.375"

LG

00000

OBO

01154-00511

1

BRACE:FRONT

28480

01154-00511

07154-00491

1

COVER:UPPER

28480

01154-00491

2680-0118

SCREW:FLAT

HD

pall

DR

10-32

X

0.500"

LG

00000

aBO

01154-00512

1

BRACE:FRONT

28480

01154-00512

2680-0118

SCREW:FLAT

HO

pall

DR

10-32

X

0.500"

LG

00000

OBO

01154-00521

1

BRACE:BACK

28480

01154-00521

2680-0118

SCREW:FLAT

HO

POll

DR

10-32X0.500"

LG

00000

aBO

01754-00522

1

BRACE:BACK

28480

01154-00522

2680-0118

SCREW:FLAT

HD

pall

DR

10-32X0.500"

LG

00000

aBO

01154-00561

2

TR1MSTRIP

28480

01154-00561

2360-0181

4

SCREW:FLAT

HD

POllDR6-32X0.250"

LG

00000

aBO

07754-00570

1

SPRING

28480

01154-00510

2580-0006

2

NUT:HEX

8-32

THREAD

78189

KEP511-081800-00

2510-0045

4

SCREW:PAN

HD

POllDR8-32

X

0.375"

LG

00000

OBD

01154-20610

4

SCREW:SHWLDER

28480

01154-20670

07154-20110

1

BLOCK

28480

01754-20710

2510-0045

SCREW:PANHDPOllDR8-32

X

0.375"

LG

00000

aBO

01754-60410

1

ASSY:PAPER-TAKE-UP

28480

07154-60410

01754-60291

1

ASSY:BOTTOM

28480

07154-60291

(I

07414-1

See

introductiontothis

section

for

ordering

information

6-17

Section VI Replaceable

Parts

Table 6-2. Code

ListofManufacturers

Model

7414A

6-18

CODE

00:>0) 007B

OUll

012~5

0266J

04713

0524!l

07263

0782~

086b4

09927

131B

14~55

185

:n

lQ101

21335

2848)

5628~

70216

70903 11400

116H

71785

72136

13734 75915

76530

76~54

71342

78131

78211 18553

79136

80131

82142

8238~

83U~

915)~

9166?

9841:>

MANUFACTURER

NAME

U.S.A.

COMMON

AMP

INC.IAIRCRAFT

MARINE

PI<OD.I

ALLEN

BRADLEY

co.

TEXAS

INSTPUMFNTS

INC.

SEMICONDUCTOR

COMPONENTS

DIV.

AMPHFNOL

CORP.

MOTO~DLA

SEMI(DNDUCTD~

PRoO.INC.

COMPONENTS

CORP.

FAIRCHILD

CAMERA

& INST. CJRP.

SE~ICONOUCTDR

DIV.

BODINE

ELECTRIC

CO.

BRI

STOL

CO.

THE

BlJRNDY

C')RP.

THERMAL

LOY

CO.

CD~NFLL

OURLIER

EL~CT.

OIV.FEDERAL PACIFIC ELECT.

cn.

CURTIS

I"4STRUMENTS

tNC.

ELECTRA/MIDLAND

CORP.

FAFNIR

REARING

co.

THE

DIV.

TFXT~ON

INC.

HEWLETT-PACKAP~

CCMPANY

SP~AGUE

ELECTRIC

CO.

ALLEN

~Fr..

cn.

BELDEN

CJRP.

BUSSMANN

MFr..

DIV.MCGRAW-EDISDN

co.

Co~MERCIAL

PLASTICS co.

CINCH

MFG.

co.

DIV

TRw

INC.

HECTRO

MOTIVE

MFG.

CO.

INC.

FE)ERAL

SCREW

PROD.

INC.

L ITTELFlJSE INC.

CINCH

MnNADN~CK

MILLS

DIV.

TRW

INC.

DA(

~FG.

co. DIV.

OAK

ELECTRo/NETICS CoQP.

AMERICAN

MACHINE&FOUNDRY

co.

POTTERr.BRUMFIELD

DIV.

SHAKEPROOF

DIV. ILLINOIS

TOOL

WORKS

SIGMA

INSTRIIMENT

INC.

T

INNER"1AN

PROD.

INC.

WALDES

KoHINO

R INC.

ELECTRONIC

INDUSTPIES

ASSOCIATION

AIRCO

SPEER

ELECT.

COMPo

SWITCHCQAFT

INC.

VICTORY

ENGINEERING

COPP.

AUGAT

INC.

HCO

CORP.

ETC

INC.

ADDRESS

ANY

SUPPLIEROFU.S.A.

HARRISBURG,

PA.

~ILWAUKEE,

WIS.

DALLAS,

TEX.

BROADVIEW,

ILL.

PHOENIX,

ARIZ.

CHICAGO,

ILL.

MOUNTI\IN

VIEW,

CALIF.

CHICAGO,

ILL.

WATERBUPY,

CONt-l.

NORWALK,

CONN.

DALLAS.

TEX.

"4E;./APK,

N.J.

~T.

KISCO,

N.Y.

MINERAL

WELLS,

TEX.

NEw

BRITAIN,

CONN.

PALO

UTO,

CALIF.

N.

ADAMS,

MASS.

HARTFORD,

CONN.

CHICAGQ,

Ill.

ST. LOUIS,

MO.

MU

DELEIN,

ILL.

ELK

GROVE

VILLAGE,

ILL.

WILLI"1ANTIC,

CONN.

CH

ICAGO,

ILL.

DES

PLAINES,

ILL.

CITYOFINDUSTRY,

CALIF.

CRYSTAL

LAKE,

ILL.

PRINCETON,INO. ELGIN,

ILL.

S.

BRAINTREE,

MASS.

CLEVELAND,

OHIO

LQf\lG

IS.

CITY, N.Y.

WASHINGTOf\l

D.C.

DU

BOIS,PA.

CHICAGO,

ILL.

SPRINGFIELD,

N.J.

ATTLEBORO,

MASS.

wILLOW

GROVE,

PA.

CLEVELAND,

OHIO

07414-1

I

A2A2,

A2MP1-MP4

Figure 6-3. Control Panel

A2

(07754-60240)

Subassemblies, Parts Location Diagram

IModel 7414A

MP10

Section

VI

Replaceable Parts

¢Figure 6-3.

07414-1

Figure 6-2.

Unit

Housing A 1

(07754-60270),

Parts Location Diagram

6-19

Section

VI

Replacea

ble

RI 15

R22 330

5"1o,1/2W

TP2v-_--

'OOOB

~

Hr

MI

440Hz OSC.

R23

AMPL.

5.6M

ADJ.

~

CW

RIO

500

/

IW

,

/

~

,

/

,

/

,

/

~

,

/

"

/

"-

/

"-

/

~ ~

,

/

,

/

,

/

~

,

/

"-

/

"-

/

,

~

RI8

1500

5%.

II2W

---<

RI9

330

5%.1/2W

~RI

;+-

~R2

~

50K

1/2WCW1/2W

CW

r-------

I I I

I

I ELAPSED

I~~~R

-------------

J25

--

/

6

"-

;-

(7

"-

/

4

"-

/

/10

"-

/

/1l2

"-

/

,,8

~

,

,,17

/

/18

"

I,

/

,

19

13

9

I

k

l

/

~

21

"-

RI:F

R2~F R3~F

R1P

500

.500

500

II2W

1/2W

~14

/

>0

,

/

15

"-

/

16

"-

/

( "

"-

/

2

,

....

i-

A2A2

(07754-60130)

HEAT

CONTROL

J25

P.e.

BOARD

ASSEMBLY

-------------

r

6

I I

I

I I I

I

I~I-

C6 I RII I

Gl

I

1ld

I

I I 1

1

I

I I I

I'"

1'-.47I10

~1t=-

-+I+-

~1r-

lr-

-jlr-

~1r-

-jlr-

-j

1

t-

-+1

11:

~1~:

__

-

~11:

-

-,-

.-

I-

'-1-

~

r+ r +

r-+

-

- - -

I

1-

-I

,

+--

IJ2

~

11:

11:-

11:

"-~11:-

--

~~r

C

I

~

+-

~

.

~

+-

-+

-,-

B

I

~Jll:

*

CR4 CR3

CR2

CRI

' E

1

~

~r

~

L{IO

~

+-

L4

,I

L3

/A

L2

/5

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3

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Figure 6-4. Control PanelA2Schematic Diagram

6-20

07414-1

Model 7414A

Section

VI

Replaceable Parts

Figure 6-5.

Control

Switch Board

A2A

1 (07754-60120)

Component

Location

Diagram

POTENTIOMETERS

(OTHER

SIDE)*

Figure 6-6. Heat

Potentiometer

Board

A2A2

(07754-60130)

Component

Location

Diagram

07414-1

6-21

Section VI Replaceable Parts

N

.

~

~mUOW~I~~~~Z~~~~~>~X~N

Figure 6-7. Preamplifier Power

Supply

Board

A2A3

(07754-60140)

Component

Location

Diagram

6-22

Model 7414A

07414-1

Model 7414A

A17,

2400

HZ

OSCILLATO (REF)

R

""'~,

~

U1

A18,

440

HZ OSCILLATOR (REF)

MP7--~

MP9

Section VI

Replaceable Parts

MP2

07414-1

Figure 6-8. Power Supply A

3, Exploded V·

lew

6-23

Section

VI

Replaceable Parts

6-24

Figure 6-9 Power

Supply

A3,

Electrical Parts

J17

Model 7414A

07414-1

j

EXTRA

MKR

SIGNAL

iNPUT

REMOTE

RUN

(-24V)

REMOTE EVENT MKR

INPUT

REMOTE

-24V

OSC

"B"

OSC

"A"

440

HZ +12V SIGNAL

INTERRUPT

(-12)

HEAT CONTROL-RUN

(-12)

INTERLOCK (NO)

-12V 24V/60HZTOTIMER CKT

+20V OSC

GND

REFERENCE

GND

SIGNAL

GND

POWER

GND

-20V

Section

VI

Replaceable Parts

-24V

PIO

A3AI

(07754-60150)

TRANSFER

BOARD

ASS'y

24V 20V

WER

GND

GNAL

GND

OV

2V 2V

oHZ

C "A" C

"B"

MOTE

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INPUT

MOTE RUN

(-24V)

TRA

MKR

SIGNAL

INPUT

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II

PO )12SI )1

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10

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A3,

Schematic Diagram

(Less

A3A

1)

07414-1

6-25

Section VI

Replaceable Part

Model

7414A

Figure 6-11. Transfer Board

A3A

1 (07754-60150)

Component

Location

Diagram

6-26

07414-1

6-27

Section VI

Replaceable

Parts

POWER

GROUND

SIGNAL

GROUND

-20V}

TO

J28

ONLY

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V

tl2V

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J27

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INPUT

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CIRCUIT

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L

EVENT

MARKER

INPUT

~

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VARIES

AS FUNCTIONOFSPEED (P/O

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}

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INPUT

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07414-1

I Model

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