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Gould 220 Service and user manual

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Page 1

GOULD 220 RECORDER ALL MODELS

Page 2

WARRANTY

Each instrument manufactured by Gould Inc., Instruments Division is warranted to be free from defects in material and workmanship and to operate in accordance with published specifications when used with the recommended associated equipment and with Gould approved supplies. Liability under this warranty is limited to servicing and replacement of any defective parts, except tubes, pens, styli, fuses and batteries, and excludes calibration and minor maintenance as outlined in Gould Operating Manuals. (Exception: The thermal pen in the 110 Strip Chart Recorder is guaranteed for life.)

This warranty is effective for one year after date of delivery to the original purchaser. If defective operation has been caused by misuse or abnormal conditions of operation, repairs will be billed at our current rate, in which case an estimate will be furnished prior to starting of repair work, if requested.

If a defect occurs:

  • 1. Notify your nearest ID Service Center (see below), giving full details of the difficulty, and include the model number, type number, and serial number. On receipt of this information, service data or shipping authorization and instructions will be forwarded to you.
  • On receipt of the shipping authorization, forward the instrument prepaid to location indicated on shipping authorization.

Compliance with the above procedure will assure the earliest repair and return of your equipment.

BOSTON INSTRUMENTS DIVISION 129 Middlesex Tumpike Builington, Massachusetts 01803 Phone: (617) 272-0750

SANTA CLARA INSTRUMENTS DIVISION 4600 Old Ironsida Drive Senta Clara, California 95050 Phone: (408) 988-8871

CHICAGO INSTRUMENTS DIVISION 801 Mark Street Elk Grove Village, Illinois 60007 Phone: (312) 640-4380

CLEVELAND INSTRUMENTS DIVISION 3631 Perkins Avenue Cleveland, Ohio 44114 Phone: (216) 361-3315

DAYTON INSTRUMENTS DIVISION 4668 Gateway Circle Dayton, Ohio 45429 Phone: (513) 433-9586

DENVER INSTRUMENTS DIVISION 730 Wast Hampden Avenue Englewood, Colorado 80110 Phone: (303) 761-7021

DETROIT INSTRUMENTS DIVISION 23775 Northwestern Southfield, Michigan 48075 Phone: (313) 355-0900

SERVICE CENTERS

COLUMBIA, SC INSTRUMENTS DIVISION c/o W.A. Brown Instruments Inc. 1201 St. Andrews Road Columbia, SC 29210 Phone: (803) 798-8070

HOUSTON INSTRUMENTS DIVISION 10500 Northwest Freeway Houston, Texas 77092 Phone: (713) 680-1121

HUNTSVILLE, AL INSTRUMENTS DIVISION c/o W.A. Brown Instruments Inc. 7917-C Charlotte Drive Huntsville, Alebama 35802 Phone: (205) 883-8660

LANHAM, MD INSTRUMENTS DIVISION 5900 Princess Garden Parkway Lanham, Maryland 20801 Phone: {301} 459-7350

LOS ANGELES INSTRUMENTS DIVISION 2525 Campus Drive Irvine, California 92715 Phone: (213) 639-7301

ORLANDO INSTRUMENTS DIVISION c/o W.A. Brown Instruments Inc. 222 Weber Avenue Orlando, Florida 32803 Phone: {305} 425-5505

PHILADELPHIA INSTRUMENTS DIVISION GSB Building Belmont & City Line Avenue Bala Cynwyd, Pennsylvania 19004 Phone (215) 839-7066

PITTSBURGH INSTRUMENTS DIVISION Campbells Run Road Parkway West Pittsburgh, Pennsylvania 15205 Phone: (412) 923-2160

SADDLEBROOK INSTRUMENTS DIVISION 74 Kenney Place Saddle Brook, New Jersey 07662 Phone: (201) 845-0220

SEATTLE INSTRUMENTS DIVISION The Commons Bldg. Suite C-155 1200 112th Avenue NE Bellevue, Washington 98004 Phone: (206) 453-8100

TORONTO ALLAN CRAWFORD ASSOC., LTD 6503 Northam Drive Mississauga, Ontario, Canada Phone: 678-1500

EUROPE

GOULD ALLCO S.A. 57 rue St. Sauveur 91160 Ballainvilliers, France Phone: 909-10-67

GOULD ADVANCE Roebuck Road Ha nault, Essex, England Fhona: 01-500-1000

Page 3

TABLE OF CONTENTS

I . GENER ALINFORMATION
1.1
1.2
1.3 		Introduction
П INSTA LLATION
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8 		General2.1Incoming Inspection2.1Power Requirements2.1Signal Connections2.1Chart Takeup Installation (Model 11-6402-03)2.1Interchannel Event Marker Installation (Model 11-6221-00)2.2One-Second Timer Installation (Model 11-6101-21)2.3Rack Mounting Installation2.4
ш OPERA TION
3.1
3.2
3.3
3.4
3.5
3.6 		General3.1Front Panel Controls3.1Rear Panel3.3Recorder Set-up and Operation3.5Operation with Brush Preamplifiers and Couplers3.5Telecommunications Recorder AC-DC Converter3.5
IV MAIN TENANCE
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13 		General4.1Changing Chart Paper4.1Cover Assembly4.2Replacing Analog Pen4.2Replacing Event Pen Model 11-2873-204.4Replacing Penmotor Band Asm on Penmotor 8647504.4Replacing Penmotor Band Asm on Penmotor 8819934.5Pen Pressure Measurement4.6Pen Lapping4.7Ink Cartridge Replacement4.8Pen Cleaning4.10Lapping Procedures for Extended Life Pen, Model 11-2823-344.10Schematics4.11
v CALIE BRATION
5.1
5.2
5.3 		General
VI THEO RY OF OPERATION
6.1
6.2
6.3 		General
Page 4

VII TROUBLESHOOTING

7.1 General
72 Electrical Power Malfunctions
73 Chart Drive Malfunctions
7.4 Pen Inking Malfunctions
7.5 Signal Malfunction
viii PART SIDENTIFICATION
8.1 General
١X SCHE MATICS
9.1 General
Page 5

SECTION I

GENERAL INFORMATION
1.1 INTRODUCTION

The Gould 220 Recorder is a completely self-contained, portable, lightweight two-channel analog recorder.

The recorder features a pen-position servo system, based on a frictionless transduer, assuring extreme accuracy. Traces are clear, crisp and uniform. This writing system of pressurized ink puts the traces into the paper, not on it. The ink is contained in a disposable plastic cartridge which can be replaced in minutes. Pen motion is rectilinear.

Recording range extends from one millivolt to 500 volts a-c, peak-to-peak and one millivolt to ±250 volts d-c. Input is differential balanced-to-ground, or single-ended by use of ground strap. Frequency response is flat from d-c to 100 Hz at ten divisions, with full scale response at 40 Hz (±2% full scale).

Full functional control, including 13-step attenuation, intermediate sensitivity, and pen positioning is provided on the front panel for each analog channel. Adjustable electronic pen limiters

on amplifier prevent analog pen damage from off-scale signals. Two event markers are standard on left and right-hand margins. A third event marker may be added between analog channels. Convenient jacks on rear panel permit activation of markers from an external switch closure.

Two series of Gould 220's are standard. One has four chart speeds of 1, 5, 25 and 125 millimeters per second, and the other has eight chart speeds of 1, 5, 25 and 125 millimeters per minute or millimeters per second (Figure 1-1). All chart speeds are electrically selected by pushbuttons.

A version of the Gould 220 is also available for the telephone industry with all standard features plus special remote control facilities and a 1/10 second interval timer (Figures 1-2 and 1-3).

Chart tracking error is less than 0.025 of an inch in 10 feet after stabilization at high speed. Chart capacity is 275 feet with high-contrast Kromekote and 400 feet with reproducible paper.

FIGURE 1-1 GOULD 220 RECORDERS: FOUR SPEED AND EIGHT SPEED

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FIGURE 1-2 GOULD 220 TELECOMMUNICATIONS RECORDER WITH COVER ASM, MODEL 11-6404-30

FIGURE 1-3 TELECOMMUNICATIONS RECORDER WITH COVER ASM MODEL 11-6404-30 WITH ACCESSORIES SHOWN

Page 7

1.2 SPECIFICATIONS

This paragraph lists the specifications and data pertinent to the Gould 220 Recorder.

a, General
Number of Channels
Channel Width
Trace Presentation
Trace Width
Pressurized fluid (U.S. Patent 3,054,109)
Writing Method 1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.
Writing Fluid Capacity 4.3 inches wide——two 40mm grids graduated in 50 divisions across span.
Chart Description
Chart Capacity
Chart Speeds
Chart Speed Accuracy
Operating Temperature
Storage Temperature
Principle Dimensions
Weight
b. Electrical
Sensitivity
Measurement Range
Insut Circuit
Input circuit in the second
In-Phase Rejection 60 dB at 60 Hz with maximum source unbalance of one kilohm
at one mv/div sensitivity setting
(decreasing on higher sensitivity settings)
Maximum Signal Input
Page 8

Maximum Common Mode Voltage . 10,000 times the VOLTS/DIV sensitivity up to a maximum of 500 volts

ATTENUATOR
SETTING 		MAX.COMMON-MODE
VOLTAGE
1 mV/div
2 mV/div
5 mV/div
10 mV/div
20 mV/div
all others 		10V d.c
20V d.c
50V d.c
100V d.c
200V d.c
500V d.c
Non-Linearity 0.5% full scale d-c
Frequency Response 50 div ±1 div d-c to 40 Hz
10 div ±1 div d-c to 100 Hz
3 dB down at 125 Hz
Stability (after 15-minute warm-up and excluding pa aperdrift)
(Zero with respect to)
Time ±0.1 div for 8 hours
Temperature ±0.1 div per ºC, 25ºC ±10ºC
Line Voltage ±0 .05 division, ±10% line variation
(Gain with respect to)
Time ±0.1% per 8 hours
Temperature . ±0.05% per °C, 25°C ±10°C
Line Voltage ±0.0 5% per volt, ±10% line variation
Power Input (a-c)
15-6327-50, -51, -57 115 volts ±10% 60 Hz
115 volts ±10% 50 Hz
230 volts ±10% 50 Hz
Power Consumption 160 watts; 269 volt-a mperes at 115 volts (all models)
1.3 SUPPLIES AND ACCESSORIES
a. Supplies
Chart Paper
High-Contrast, Kromekote (275 feet) 1mm time I ine
Reproducible (400 feet) 11-2923-4 3
Analog Pen 11-2823-33
Page 9
Extended Life Analog Per n. - · ٠ - · ٠ ٠ ٠ · ٠ ٠ · ٠ • • • · • • • • ٠ ٠ - · 1 1-28 323 -34
Event Marker Pen ٠ , 11 1-28 373. 20
Ink Cartridge (1 oz) • • • - • - 11 1-27 /30- 01
Pen Replacement Wrench ( Mul ltip le S Spl ine ed) ٠ ٠ 1. 120 )922 2.2
Pen Pressure Adjustment W /ren ch (M ult ipl e S Spl ine d) • ٠ - 1-1 209 922- 18
Gram Gage (Pen Pressure) ٠ ٠ 24 060 )1.9 10
Band Replacement Tool ٠ - 34 140 9.9 15
Band Replacement Wrench (M ulti ple s SI nilq nec d) • · 1. 120 922 2.3
Band Replacement Wrench (He ex) ٠ • · 245 5218 3-5
b. Accessories
Starter Kit • ٠ • ٠ , 11 1-62 250 00
Consists of:
Chart Paper (12 rolls)
Gram Gage
Pen Pressure Wrench
Pen Replacement Wrend
Dust Cover 		, , • · ·
•
• 		• • • • • • 1
- 		11
24
1-1
1- 		1-29
060
209
120
41 		123-
11-9
122-
1922
659 		32
10
18
2-2
71
Replacement Kit • • - - • • • - 11 -62 51- 00
Consists of:
Chart Paper (12 rolls)
Analog Pens (2)
Event Marker Pens (2)
Ink Cartridge (1 oz) 		• •
• • 		-
-
- 		• •
•
• 		-
-
- 		•
•
• 		• • • • • •
•
• 		11
13
11
11 		-29
-28
-28
-27 		23-
23-
73-
30- 		32
33
20
01
Rack Mounting Kit , ٠ ٠ , ٠ ٠ • ٠ ł • ٠ ٠ • 11 -12 02 ( 08
Internal One-Second Timer • · • - · • 11 -61 01.3 21
Chart Takeup • • · ٠ · · • • • • 11 -64 02.( 03
Interchannel Event Marker Kit - - - - • - • • ٠ · 11 -62 21- 00
Dust Cover ٠ , · • ٠ 46 359: 71
AC-DC Converter • • - · 11 -64 03.( 00
Shipping case (aluminum)
Case insert 		• ••• ••• ••• ••• ••• ••• ••• ••• •••
••• ••• ••• ••• ••• • • ••• • • ••• ••• ••• 36
40 		671)
580 		81
01
Page 10

Page 11

SECTION II

INSTALLATION

2.1 GENERAL

This section describes the inspection checks to be performed upon receipt of the Gould 220 and details power requirements and signal connections. In addition, this section describes and illustrates installation of the Chart Takeup, Interchannel Event Marker, One-Second Timer, and Rack Mounting Kit.

2.2 INCOMING INSPECTION

Perform the following procedures before operating the recorder.

  • Visually inspect unit for damage that may have occurred during shipment. Refer to warranty sheet in case of damage.
  • Remove packing material and tape from recorder.

NOTE: Do not attempt to operate this equipment before completing Section III, Operation.

2.3 POWER REQUIREMENTS

Listed below are the voltage, frequency, and power requirements for the various models of the Brush 220 Recorder.

Model No. Power Source

15-6327-50, 115 volts a-c, ±10%,60Hz, 160 watts 15-6327-51, 15-6327-57 15-6327-55 115 volts a-c, ±10%,50Hz, 160 watts 15-6327-56, 230 volts a-c, ±10%,50Hz, 160 watts 15-6327-58

2.4 SIGNAL CONNECTIONS

a. Drive Amplifier Input Signal

Connect signal to INPUT 1 and 2 terminals on front panel. For single-ended input, connect ground strap to terminal 2. For balanced or double-ended input, disconnect ground strap.

NOTE: A positive input to pin 1 will cause the pen to deflect to the left.

b. Event Marker Signals

The event markers are actuated by pushbutton switches located on front panel. The left marker pen deflects to the left, right marker pen deflects

to the right. Event markers may also be actuated by external switch closure (short) across terminals located on rear panel.

NOTE: Resistance of each event marker coil is 600 ohms and has -32 volts d-c connected from an internal source.

2.5 CHART TAKEUP INSTALLATION (MODEL 11-6402-03)

Refer to Figure 2-1 and perform the following:

  • Disconnect recorder from power source.
  • Remove recorder from case (refer to Para. 4.3a)
  • Remove plastic caps covering slots in front panel.
  • Remove ground straps from channel input terminals and set aside.
  • Remove screw and remove shield can from rear of channel 1 input terminals.
  • Loosen nut, on rear of middle binding post on channel 1 input terminals, allowing shield can mounting bracket to rotate free on binding post.
  • Position chart takeup on front panel with drive belt on left side.
  • Attach chart takeup to front panel with four screws and four lockwashers.
  • Slide pulley onto pressure roller shaft and secure with cotter pin.
  • Position chart takeup drive belt around pulley.
  • Position shield can mounting bracket and tighten nut on middle binding post.
  • 12. Attach shield can to mounting bracket at rear of channel 1 input terminals with screw.
  • 13. Replace ground strap.

NOTE: The ground strap should be positioned so that when disconnected from middle binding post it will swing away from chart takeup.

14. Install recorder in case (refer to Para, 4.3b).

Page 12

FIGURE 2-1 INSTALLATION OF CHART TAKEUP, MODEL 11-6402-03

2.6 INTERCHANNEL EVENT MARKER INSTALLATION (MODEL 11-6221-00)

Refer to Figures 2-2 and 4-5 and perform the following:

  • Disconnect recorder from power source.
  • Remove recorder from case (refer to Para. 4.3).
  • Remove pen access cover.
  • Secure Event Marker to permotor mounting bar with self-tapping screws.
  • Connect black lead from Event Marker to terminal 2 and blue lead to terminal 3 of terminal board TB-302, at rear of recorder.
  • Install jacks into existing holes in rear panel.

  • Attach capacitor across jacks (do NOT solder).
  • Solder one end of 10-inch lead to one end of capacitor and jack as shown.
  • Connect other end of 10-inch lead to terminal 3 of terminal board TB-302.
  • Solder one end of 4-inch lead to capacitor and jack as shown.
  • Solder other end of 4-inch lead to existing jack as shown.
  • 12. Install pen on Event Marker (refer to Para. 4.5).
  • Remove cap from manifold nipple and connect ink tubing from pen to ink manifold nipple.
Page 13

FIGURE 2-2 INSTALLATION OF INTERCHANNEL EVENT MARKER, MODEL 11-6221-00

  • Turn ink valve control clockwise to ON position.
  • 15. Check and adjust pen pressure (Para. 4.8),
  • 16. Lap pen if required (Para, 4.9).
  • 17. Install recorder in case.
  • 18. Replace pen access cover.
2.7 ONE-SECOND TIMER INSTALLATION (MODEL 11-6101-21)

Refer to Figure 2.3 and perform the following:

  • 1. Disconnect recorder from power source.
  • Remove recorder from case (refer to Para. 4.3).

Remove four screws securing rear panel to recorder and move panel to one side to allow access to inside of rear panel.

CAUTION: USE CARE WHEN MOVING REAR PANEL SO NOT TO BREAK ATTACHING LEADS.

Relieve pressure on ink cartridge (refer to Para. 4.10, step 3).

NOTE: Relieving pressure on cartridge will prevent ink escaping if tubing is accidently pulled from cartridge.

  • Position timer on inside of rear panel and attach with two screws.
  • Position timer ON-OFF switch on lower left-hand corner of rear panel and attach with two screws and two lock washers.
Page 14

FIGURE 2-3 INSTALLATION OF ONE-SECOND TIMER, MODEL 11-6101-21

  • Solder red and white/black/violet leads to right event marker jacks.
  • Connect white lead to terminal 5 and white/black/orange lead to terminal 6 on terminal board TB-301 on the right-hand side plate.
  • Apply pressure to ink cartridge (refer to Para. 4.10, step 4).
  • Position rear panel on rear of recorder and secure with four screws.
  • 11. Install recorder in case.

2.8 RACK MOUNTING INSTALLATION

The Gould 220 Recorder may be rack mounted in a standard 19-inch RETMA cabinet using Rack Mounting Kit, Model 11-1202-08

a. Installation

Refer to Figure 2-4 and perform the following:

  • 1. Remove four screw and rubber feet from bottom of recorder.
  • Attach support bracket to bottom of recorder with four screws and lock washers.
  • Attach two bottom nut bars to cabinet front rails at desired height using two screws and spacers.
  • Position right-hand hanger behind nut bar and attach to front rail with two screws.
  • Position support hanger against rear rail and attach with two screws.
  • Align slotted holes on hanger with holes on support and install two screws.
Page 15

FIGURE 2-4 INSTALLATION OF RACK MOUNTING KIT, MODEL 11-1202-08

Perform steps 4, 5, and 6 to mount left-hand hanger.

NOTE: The above procedure is used when the rear mounting is a single-bend cabinet rail. If the rear mounting is a multiple bend cabinet rail, the support hanger is not required. Instead, slide two floating nuts, onto the rear rail, position hanger against rail, and attach with two screws as shown on left rear rail in Figure 2-4.

Attach two top nut bars to cabinet front rails using four screws and spacer.

  • Slide support bracket with recorder attached onto hangers.
  • Position front panel around recorder and attach to front rails with four screws, nyion washers, and countersunk washers.
b. Removal

  • Remove four screws and attaching hardware and remove front panel.
  • Remove four screws and lock washers from support bracket and remove recorder.
Page 16

SECTION III

OPERATION

3.1 GENERAL

This section describes and illustrates the controls on the Gould 220 Recorder and also provides instructions for proper operation.

3.2 FRONT PANEL CONTROLS

NOTE: Item numbers listed below correspond to circled numbers in Figure 3-1.

ltem Control Description
1 POWER ON Controls a-c power to recorder. Depress button to turn recorder ON or OFF. An internal lamp illuminates the pushbutton when the recorder is on.
2 CHART SPEED Permits selection of four chart speeds and STOP.
When in STOP position chart drive is off, and pens
will not respond to input signals. Depressing any
chart speed button will activate the chart drive at
the selected speed. Chart speeds may be changed
while chart drive is running.

FIGURE 3-1 GOULD 220 RECORDERS - FRONT PANEL CONTROLS

Page 17

3 MM/SEC (Eight speed only) When depressed, chart speeds are in millimeters per second. This button may be depressed at any time while the chart drive is running, Δ MARK EVENT Two momentary switches permit manual marking of an event. When left MARK EVENT button is depressed the left event marker pen will deflect to the left. When the right MARK EVENT button is depressed the right event marker pen will deflect to the right. NOTE: The event marker pens will remain deflected until the MARK EVENT button is released. 5 SENSITIVITY Provides 13-step attenuation of input signal from one millivolt per division to ten volts per division. and OFF. SENSITIVITY X1 6 Provides intermediate sensitivities between the fixed settings of the stepped sensitivity control. When in the full clockwise x1 (detent) position, the sensitivity is fixed as indicated on the stepped sensitivity control. When rotated counterclockwise, the sensitivity is less than indicated on the stepped sensitivity control to a maximum ratio of 2.5 to 1. This control is fitted with a locking nut to prevent inadvertent turning. NOTE: This is a variable control, but not calibrated. 7 POSITION Permits pen positioning anywhere within the channel and allows either edge of channel, or any point between to be used as zero signal position. This control is fitted with a locking nut to prevent inadvertent turning. 8 Signal Input Terminals Three input terminals are provided for each channel. Ground strap is removable to provide balanced or floating input. Input is single-ended with ground strap connected. Writing Table . . 9 Complete assembly consisting of table, writing bar and paper supply shaft. To gain access to the paper supply, pull out on pull bar and swing table up. To close, swing table down into position and push on pull bar until table snaps in place. NOTE: Writing table must be completely closed or recorder will not operate. Recorder is equipped with an interlock circuit which prevents operation

page 3.2

when writing table is not properly closed or when

paper supply is exhausted.

Page 18

3.3 REAR PANEL

NOTE: Item numbers listed below correspond to circled numbers in Figure 3-2.

1 Event Marker Right

Two jacks which permit actuation of right event marker by external switch closure. Placing a short between these two jacks will deflect right event marker pen to right (refer to Para. 2.4b).

Pen will remain deflected until short is removed.

FIGURE 3-2 REAR PANEL - GOULD 220 RECORDER.

Page 19
2 Center Event Marker Input (optional) Two jacks which permit actuation of center event
marker from external switch closure.
3 Event Marker Left Two jacks which permit actuation of left event marker from an external switch closure. Placing a short between these two jacks will deflect the left event marker pen to the left (refer to Para. 2.4b).
Pen will remain deflected until short is removed.
4 Tilt Support Permits operation of recorder in 30 degree reclined
position. Bar swings out and snaps in place.
5 SWITCH Remote Control With plug (supplied with the recorder) inserted, the recorder chart drive may be started by shorting (external switch closure) this plug.
NOTE: This jack performs the same functions as
the STOP switch on the front panel.
6 Schematic Number This schematic number, with the revision letter indicated, must correspond with the number and revision letter of the schematic found at the rear of this manual.
7 Internal Timer (optional) Provides internal one-second pulses to actuate right
event marker. When in the ON position, right event
marker will be actuated by an internal timer at the
rate of one pulse per second. When in the OFF
position, the internal timer is inoperative.
NOTE: Internal 1/10 second timer is standard on
Model 15-6327-51 Telecommunications Recorder.
8 Fuse Line fuse, protects the recorder from damage if a serious malfunction should occur.
9 Fuse Table A list of factory recommended ratings for fuses for
various a-c power source.
CAUTION: THIS LIST DOES NOT IMPLY THAT
THE RECORDER WILL OPERATE AT ALL THE
INPUT SOURCES LISTED. THE RECORDER
CAN ONLY BE OPERATED FROM A-C POWER
SOURCE AS INDICATED BY THE MODEL
NUMBER. REFER TO PARAGRAPH 2.3 FOR
THE CORRECT A-C SOURCE FOR THE MODEL
BEING USED.
10 Supplies List A list of supplies by correct model number permanently silkscreened on the rear of recorder. Refer to this list when re-ordering supplies.
11 24-28 VDC Remote Control With plug (supplied with recorder) inserted, the recorder chart drive may be started by applying 24 to 48 volts d-c to the plug. This jack overrides the switch jack.
NOTE: This jack performs the same functions as the STOP switch on the front panel.
Page 20

3.4 RECORDER SET-UP AND OPERATION

CAUTION: CHECK TO BE SURE ALL PROCEDURES IN SECTION II, INSTALLATION, HAVE BEEN PERFORMED.

When preparing the Gould 220 Recorder for operation, be sure to observe all of the following steps:

  • With unit disconnected, open writing table by pulling up on pull bar (see Figure 3-1) and be sure adequate paper for operation is on supply roll, and that it is properly threaded. (See threading diagram on side of writing table). If paper supply is exhausted or improperly threaded, refer to Para. 4.2 for complete instructions for changing chart paper. Close writing table firmly.
  • Connect unit to proper voltage and frequency as indicated on unit nameplate.
  • Depress POWER switch and observe that the POWER switch button is illuminated.
  • Depress 5 MM/SEC chart speed button and operate recorder to insure good ink flow on all channels. If no writing is present after first one foot of paper, refer to Para. 4.8 and check ink cartridge for adequate ink.
  • 5. Set SENSITIVITY control to OFF position.
  • Turn SENSITIVITY X1 control to full clockwise position (detent) and secure with locking knob.
  • Position pen at exact chart center or any other position desired as signal - zero position with the POSITION control. Lock knob in this position.
  • Switch SENSITIVITY control to a range that will permit maximum pen deflection without going beyond chart edge.
  • Chart deflection will be proportional to the SENSITIVITY control setting for the voltage being recorded.

  • 10. Select a chart speed that will best display the signal with respect to the frequency of the signal.
  • 11. Unit is now ready for operation.

NOTE: Primary power is removed from recorder by a paper interlock switch when paper supply is exhausted. Because of the necessity of keeping paper under pens at all times, some unused paper will remain on the roll.

3.5 OPERATION WITH GOULD PREAMPLIFIERS AND COUPLERS

When using this recorder in conjunction with any Brush preamplifier or coupler, proceed as follows to insure proper operation.

  • 1. Set recorder SENSITIVITY to OFF position.
  • Adjust recorder POSITION control to position pen at exact chart center and lock knob.
  • Check that recorder vernier SENSITIVITY X1 control is in the detent position, and lock knob.
  • Set recorder SENSITIVITY to 100 MV/DIV.
  • Connect preamplifier output to recorder in such as way that turning the preamplifier POSITION control clockwise will move the pen to the right. The recorder ground strap may have to be disconnected, depending on the output polarity of the preamplifier or coupler.
3.6 TELECOMMUNICATIONS RECORDER AC-DC CONVERTER

An AC-DC Converter, Model 11-6403-00 is supplied with the Model 15-6327-51 Telecommunications recorder. When properly attached to the recorder input terminals, this unit converts AC signals to equivalent DC levels. The converter is applicable in the frequency range of 700 Hz to 100K Hz.

Page 21

MAINTENANCE

4.1 GENERAL

This section describes and illustrates removal, installation, and adjustment procedures that can normally be performed by the operator. All pictures are of the four speed version.

4.2 CHANGING CHART PAPER

This paragraph describes and illustrates the procedures for changing the chart paper.

NOTE: The last 50 feet of all Brush chart paper is identified by a blue line moving from right edge to left edge. When blue line crosses chart center, approximately 25 feet of paper remain.

a. Removal

  • 1. Press chart speed STOP button.
  • 2. Turn recorder off.
  • Grasp pull bar (Fig. 4-1) on bottom of writing table and pull out and up to place writing table in open position.

  • Hold paper supply core and shaft and pull down on paper supply release lever (Fig. 4-2) and remove paper supply core and shaft.
  • 5. Unscrew paper core from supply roll shaft and discard paper core.

FIGURE 4-2 CHANGING CHART PAPER (2 of 4)

FIGURE 4-1 CHANGING CHART PAPER (1 of 4)

b. Installation

1. Slide new roll of paper onto supply roll shaft.

NOTE: Check to be sure flange of shaft is at right side adjacent to channel 2 on chart paper and paper unwinds from top of roll.

  • Screw supply roll shaft into paper core so that flange is snug against paper core.
  • Insert flanged end of paper supply roll shaft into shaft mounting holes in writing table assembly (Fig. 4-3), and push up on release lever to lock shaft into position.

CAUTION: CHECK TO BE SURE LEFT END OF SUPPLY ROLL SHAFT IS SEATED IN WRITING TABLE ASSEMBLY AND SUPPLY ROLL SHAFT ROTATES FREELY.

Feed paper over writing bar, through slot in front of writing table, behind pressure roll and out front of writing table assembly (Fig. 4-4).

NOTE: Refer to paper threading diagram on side of writing table assembly.

Page 22

FIGURE 4-3 CHANGING CHART PAPER (3 of 4)

CAUTION: USE CARE DURING PAPER THREADING NOT TO DAMAGE PENS.

Slowly close writing table assembly while gently pulling on paper. When friction resists rotation of paper roll, pull paper taut, center on writing table, and close writing table.

NOTE: Check to be sure writing table is properly engaged by pressing on both sides of writing table.

6. Turn recorder on and operate at 125 millimeters per second to run about two feet of chart paper to align chart paper.

4.3 COVER ASSEMBLY

The cover assembly must be removed to perform certain maintenance and calibration procedures on the recorder.

WARNING: CHECK TO BE SURE RECORDER IS TURNED OFF AND DISCONNECTED FROM A-C POWER SOURCE.

a. Removal

  • Lay recorder on rear panel and remove four screws attaching rubber feet and cover assembly to bottom of recorder.
  • 2. Return recorder to upright position.

  • Carefully slide recorder forward out of cover assembly.
  • b. Installation
  • 1. Carefully slide recorder into front of cover assembly.

CAUTION: CHECK TO BE SURE WIRES ARE NOT PINCHED BETWEEN COVER AND RECORDER CHASSIS.

  • Lay recorder on rear panel and install four screws attaching rubber feet and cover to recorder.
  • 3. Return recorder to upright position.

4.4 REPLACING ANALOG PEN

This paragraph describes and illustrates the procedures for removing and installing the analog pens.

a. Removal

  • Remove pen access cover (located above writing table) by pulling out on bottom of access cover.
  • Use a screwdriver and rotate individual ink valve button to OFF position (Fig. 4-5).
Page 23

FIGURE 4-5 REPLACING ANALOG PEN (1 of 2)

Gently remove pen ink tube from manifold nipple.

NOTE: Place a tissue under nipple and ink tube to prevent ink dripping on recorder components.

  • Use pen replacement wrench (part number 1-120922-2) and loosen set screw through access hole on side of penmotor drive arm shaft (Fig. 4-6) and remove wrench.
  • 5. Remove pen from penmotor drive arm shaft.

NOTE: Do not loosen set screw more than one-half turn or pen cannot be removed from shaft.

b. Installation

  • Carefully slide replacement pen onto penmotor drive arm shaft.
  • Align set screw in pen hub with access hole in drive arm shaft and "snug up" set screw using pen replacement wrench. Remove wrench.

NOTE: Set screw should be tightened to create friction, but loose enough to allow pen to be rotated in penmotor hub.

3. Install proper pen tube (3.34" long with right angle bend) between manifold and pen.

CAUTION: DO NOT USE SHARP INSTRUMENT.

4. Use screwdriver and turn individual ink valve button to ON position.

FIGURE 4-6 REPLACING ANALOG PEN (2 of 2)

  • Connect recorder to proper a-c power source and turn on recorder power.
  • Use pen POSITION control, and place pen at chart center.
  • 7. Operate recorder at five millimeters per second.
  • Lift pen slightly to allow ink to bleed through pen tip.
  • Press recorder chart speed STOP button and turn power off.
  • 10. Gently grasp pen near hub and move pen across entire chart width (40mm).
  • If ink trace is not parallel to a horizontal time line, gently turn pen in penmotor drive arm until trace is parallel to time line.
  • Use pen replacement wrench, tighten set screw securing pen in penmotor drive arm shaft and remove wrench.
  • If pen tip is not on same time line as other pens, loosen two pan head adjustment screws (Fig. 4-5) and slide pen up or down until all pen tips are on same time line, and tighten screws.
Page 24

14. Check pen pressure and adjust if required (Para. 4.8).

NOTE: The following steps pertain to Pen, Model 11-2823-33 only. For instructions on Extended Life Pen, Model 11-2823-34, refer to Para. 4.12.

  • New pen must be lapped before proceeding. Carefully raise pen tip just enough to slide a small strip of emery paper (3M wet or dry Tri-m-ite paper, Grit M-600, Brush part number 669234) under pen tip.
  • 16. Move emery paper back and forth five or six times, parallel to chart time lines.

CAUTION: MAKE SURE THAT EMERY PAPER IS HELD FLAT AGAINST THE CHART PAPER TO INSURE PROPER LAPPING OF PEN.

  • Remove emery paper, operate recorder at 5MM/SEC and check pen for dryness.
  • 18. If writing is not dry, proceed with normal penlapping as described in Para. 4.9.
  • 19. Install pen access cover.
4.5 REPLACING EVENT PEN MODEL 11-2873-20

This paragraph describes and illustrates removal and installation of the event marker pen.

a. Removal

  • Remove pen access cover (located above writing table) by pulling out on bottom of access cover.
  • 2. Use a screwdriver and rotate event marker individual ink valve button to OFF position.
  • Gently remove pen ink tube from manifold nipple (do NOT use sharp instrument).

NOTE: Place a tissue under nipple and ink tube to prevent ink dripping on recorder components.

Loosen two screws attaching pen to event marker and remove pen from event market (Fig. 4-5).

b. Installation

Slide replacement pen onto event marker and align pen tip on vertical grid line and on same time line as analog pen.

  • Tighten two screws attaching pen to event marker (Fig. 4-6).
  • Install proper pen tube (5.6" long) between manifold and pen.
  • Use screwdriver and rotate event marker ink valve button to ON position.
  • 5. Connect recorder to proper a-c power source and turn on recorder power.
  • 6. Operate recorder at 5 MM/SEC.
  • Lift pen slightly to allow ink to feed through pen tip.
  • 8. Check pen pressure and adjust if required (Para. 4.8).
  • New pen must be lapped before proceeding. Carefully raise pen tip just enough to slide a small strip of emery paper (3M wet or dry Tri-m-ite paper, Grit M-600, Brush part number 669234), under pen tip.
  • 10. Move emery paper up and down five or six times, parallel to division lines.

CAUTION: MAKE SURE THAT EMERY PAPER IS HELD FLAT AGAINST THE CHART PAPER TO INSURE PROPER LAPPING OF PEN.

  • 11. Remove emery paper, operate recorder at 5MM/SEC and check pen for dryness.
  • If writing is not dry, proceed with normal penlapping as described in Para, 4.9.
  • 13. Install pen access cover.

4.6 REPLACING PENMOTOR BAND ASM ON PENMOTOR 881993 (Fig. 4.9)

The permotor band assembly (part number 680294) should not be removed unless broken. Because band tension is critical, a band replacement tool (part number 341409-915) must be used to replace band assembly.

Page 25

FIGURE 4-7 PENMOTOR ASSEMBLY

NOTE: Penmotor need not be removed from recorder.

  • 1. Remove analog pen (Para, 4.4).
  • Remove socket-head cap screw and band clamping (curved) washer that secures band assembly to drive arm (use wrench 1-120922-3).
  • Remove socket-head cap screw, hex nut and two flat washers that secure band assembly to penmotor (use wrench 245218-5). Discard damaged band assembly.

CAUTION: TO PREVENT DAMAGE TO THE NEW BAND ASSEMBLY, CHECK TO BE SURE DRIVE ARM AND BRACKET ARE FREE OF NICKS, DIRT, INK BEFORE INSTALLING NEW BAND ASSEMBLY.

4. Position new band assembly around drive arm hub. Align mounting holes with tapped holes in drive arm bracket and install two screws and lock washers. Do not tighten screws.

NOTE: Check to be sure curved portion of washer is positioned to conform the radius of the drive arm hub. Use care not to nick or scratch band assembly.

  • Carefully install band clamping washer and socket-head screw.
  • Inspect band for proper positioning around drive arm hub so that equal pressure is main-

FIGURE 4-8 BAND TOOL MOUNTING

tained on top and bottom of band assembly.

  • Install band tool of penmotor and thread knurled thumb screw into penmotor (Fig. 4-8).
  • 8. Depress plunger and insert locking pin into two small holes of band assembly, making certain plunger is behind locking pin.
  • Tighten screw in penmotor, loosen onequarter turn, move drive arm back and forth several times to center band assembly and tighten screw.
  • Move drive arm back and forth several times to center band assembly on drive arm and tighten socket-head screw securing band assembly to drive arm.
  • NOTE: Do not tighten more than 22 inch-ounces.
  • 11. Depress plunger and remove locking pin.
  • 12. Loosen knurled screw securing band tool to drive arm bracket and remove tool.
  • Apply glyptal cement (or equivalent) to heads of the two screws and to nut to prevent loosening.
  • 14. Install analog pen (Para, 4.4).

4.7 PEN PRESSURE MEASUREMENT

Analog or event marker pen pressure should be checked if the ink trace is excessively wide

Page 26

FIGURE 4-9 PEN PRESSURE MEASUREMENT

(bleeding), indicating low pen pressure or if pen gouges the chart paper, indicating excessive pen pressure.

NOTE: Wide trace may also indicate an improperly lapped pen. Refer to Paragraph 4.8 for pen lapping procedures.

The gram gage (part number 240601.910) is used to measure the pressure of the analog and event marker pens as follows:

  • 1. Turn SENSITIVITY control to OFF position.
  • Depress POWER ON button to turn on recorder.
  • Remove pen access cover (located above writing table) by pulling out the bottom of access cover.
  • Press the 1MM/SEC chart speed button.
  • Place gram gage hook under pen shaft as close as possible to tip and form a right angle to pen shaft with gage hook (Fig. 4-9).
  • 6. Pull pen from chart and take reading on gage

FIGURE 4-10 PEN PRESSURE ADJUSTMENT

the moment excessive ink starts to flow from pen.

Proper writing pressure for analog pens is 28 to 32 grams. Event marker pen pressure is 20 to 25 grams.

When pens are replaced, pen pressure must be checked and if required, adjusted as follows:

  • Use pen pressure adjustment wrench (part number 1-120922-18) and turn adjusting screw (Figs. 4-4 and 4-10) clockwise to increase pressure or counterclockwise to decrease pressure.
  • Check pen pressure with gram gage and continue adjustment until proper reading is obtained.
  • 10. Install pen access cover. Recorder is ready for operation.
4.8 PEN LAPPING

NOTE: Extended Life Pen, Model 11-2923-34, must be lapped as described in Para. 4.11.

Page 27

a. General

This paragraph describes and illustrates the proper procedures for lapping the analog and event pens. Intermittent or "wet" ink trace are indications that pen pressure is incorrect or that pen requires lapping. Check for "wet" writing by operating the recorder at 5 MM/SEC chart speed, with the SENSITIVITY control in OFF position. Check pen trace by wiping index finger, with moderate pressure, across trace approximately one inch below pen tip. If ink does not smear, the pen is properly lapped. If trace smears, check and adjust pen pressure (Para. 4.7), Repeat test, and if trace continues to smear, lapping is required.

b. Lapping Procedure

NOTE: Lapping of pens should only be done when required.

  • 1. Turn recorder off.
  • 2. Remove pen access cover (located directly below chart speed selector switch) by pulling on bottom of access cover.
  • Carefully raise pen tip just enough to slide a small strip of emery paper (4/0, Brush part number 141119) under pen tip.

FIGURE 4-11 PEN LAPPING

CAUTION: DO NOT USE A COARSE OR VERY ABRASIVE TYPE OF EMERY PAPER. USE ONLY THE GRADE SPECIFIED.

Move emery paper back and forth under pentip, parallel to chart time lines, for a total distance of approximately two inches. (Fig. 4-11).

CAUTION: MAKE SURE THAT EMERY PAPER IS HELD FLAT AGAINST THE CHART PAPER TO INSURE PROPER LAPPING OF PEN.

  • Remove emery paper, operate recorder at 5 MM/SEC and check pen trace for dryness.
  • Repeat steps 3 thru 5 as required to obtain dry trace.

NOTE: If procedure is repeated more than three times, recheck pen pressure and repeat lapping. Strict adherence to above lapping procedures is imperative.

When dry trace is achieved, replace access cover.

4.9 INK CARTRIDGE REPLACEMENT

This paragraph describes and illustrates the procedures for replacing the Ink Cartridge, Model 11-2730-01.

a. Removal

  • 1. Remove recorder cover assembly (Para. 4.3).
  • Remove four screws and lock washers (two screws and lock washers located inside rubber mounts) attaching rear panel to recorder and carefully move rear panel free and clear of work area.

CAUTION: POWER CABLE, FUSE LEAD, AND EVENT MARKER LEADS WILL REMAIN ATTACHED TO REAR PANEL. EXERCISE CARE WHEN MOVING PANEL SO THAT LEADS ARE NOT BROKEN.

3. Turn activating screw (Fig. 4-12) clockwise until compression spring in ink plunger has been drawn up tight into ink plunger assembly and ink flow stopped.

CAUTION: PLACE PAPER TOWELS OR TISSUES UNDER INK SYSTEM TO PREVENT INK DRIPPING ON RECORDER COMPONENTS.

Page 28

FIGURE 4-12 INK CARTRIDGE, MODEL 11-2730-01

  • Carefully remove ink tube adapter assembly from ink cartridge.
  • Unscrew ink cartridge chamber from plunger assembly and discard cartridge.
  • b. Installation
  • 1. Remove plastic piston retainer ring from replacement cartridge and discard retainer (Fig. 4-12).
  • 2. Install ink cartridge in plunger assembly and tighten securely.
  • Remove shipping cap from ink cartridge and discard shipping cap.
  • 4. Install ink tube assembly on cartridge.

NOTE: Do not use tweezers or other sharp instruments to install adapter.

  • Turn activating screw (Fig. 4-12) counterclockwise until snug to pressurize ink system.
  • 6. Install recorder rear panel using four screws and lock washers and two rubber feet.
  • Connect recorder a-c power cable to proper power source.
  • Turn recorder on and operate recorder at a chart speed of 5 MM/SEC.
  • Gently raise each pen tip away from paper and allow ink tube to fill with ink and bleed air from tube until no air bubbles are formed at pen tip.
  • 10. Press recorder STOP button and disconnect a-c power cord from source.
  • 11. Install recorder cover assembly (Para, 4.3).
Page 29

4.10 PEN CLEANING

In the event that a pen should fail to write or displays intermittent writing, it may be caused by a clogged pen. The procedure outlined below is intended as a guide to flush pens, but may not always prove effective.

  • 1. Turn recorder off.
  • 2. Close ink valve on affected channel.
  • 3. Remove ink tubing from manifold.
  • 4. Remove pen (Para. 4.4a or 4.5a).

NOTE: Do not remove tubing from pen unless tubing is kinked or suspected of being defective. Use Brush part number 667277 for analog pen tubing and part number 666587 for event pen tubing.

5. Modify hypodermic needle per Fig. 4-13

FIGURE 4-13 HYPODERMIC NEEDLE

  • Attach modified needle onto 2cc hypodermic syringe.
  • 7. Insert needle in pen tubing.
  • Immerse pen tip in cleaning agent. (Isopropyl Alcohol, Cell-O-Solve or equivalent).
  • Back-flush by slowly withdrawing syringe plunger.

NOTE: It may be necessary to allow the pen to remain in the cleaning agent to dissolve dried ink at pen tip.

10. Install pen (Para. 4.4b or 4.5b).

NOTE: Clogging of pens may occur when proper adjustment, operating and/or handling as per Gould Operating Manual has not been adhered to.

4.11 LAPPING PROCEDURES FOR EXTENDED LIFE PEN, MODEL 11-2823-34

The Gould Model 11-2823-34 Extended Life Pen requires a different lapping procedure from that described in Para. 4.8. Install pen as described in Para. 4.3, but disregard lapping instructions referred to.

Lap Extended Life Pen as follows:

  • 1. Remove pen access cover.
  • Shut off ink manifold knobs of all channels by rotating all knobs counterclockwise.
  • Raise writing table and rewind chart paper so that no paper is left under pen tips. Be sure sufficient paper is on roll to energize interlock switch to permit recorder operation.
  • Close table and set pen pressure to 30 grams against writing bar.
  • 5. Place coarser of two lapping papers supplied (Brush part number 668963) under pen tip and drive pen at 60 Hz, 1/2 of full scale.
  • Simultaneously move lapping paper back and forth under pen. Lap in this manner for 90 seconds.
  • Now repeat procedure using finer lapping paper (Brush part number 668965) for 90 seconds.
  • Return recorder to normal operating condition (thread chart paper over writing bar and turn ink control knobs on).

NOTE: In most cases, one lapping will suffice, but occasionally two or three will be required to effect a proper seal.

  • 9. If pen tip should become blocked during lapping operation, touch pen at top of bend (above tip) with a hot soldering iron for a few seconds with pen tip slightly raised off paper. This will generally start ink flowing and flush out abrasive.
  • 10. Install pen access cover.
Page 30

CALIBRATION

5.1 GENERAL

The Gould 220 Recorder has been factory calibrated, and under normal conditions will not require calibration. However, because of parts replacement or repair, calibration may be necessary. This section describes and illustrates the correct calibration procedures. It should be pointed out that calibration should only be performed by qualified personnel familiar with procedures and standards.

5.2 TEST EQUIPMENT REQUIRED

The following is a list of recommended test equipment necessary for calibration.

NOTE: Specific manufacturer need not be adhered to, but comparable equipment is mandatory, since accuracy stated is imperative.

  • a. Function Generator (Hewlett-Packard, Model 202A, or equivalent).
  • b. D.C. Power Supply, 0 to 5 volts ±0.1% (floating).

NOTE: A precision voltmeter (Fluke 883A or equivalent) may be used to monitor D.C. Power Supply to insure accuracy if precision D.C. Power Supply is not available.

5.3 PROCEDURE

NOTE: Procedure outlined is typical of both channels.

  • 1. Remove unit from case (Para. 4.3) or slide unit forward out of rack to expose calibration controls (Fig. 5-1).
  • Connect unit to proper power source as indicated on unit nameplate.
  • Depress POWER ON on pushbutton and allow a fifteen minute warm-up time.
  • Set pen to exact chart center with pen POSITION control.
  • 5. Depress 5 MM/SEC chart speed button. Disconnect drive amplifier input by carefully removing white/black/brown wire from quick disconnect point 1.
  • Connect one end of test clip lead to drive amplifier input 1.

  • Alternately open and short input to ground (chassis).
  • Adjust ICO BAL (Balance) control for minimum pen movement when opening and shorting to ground.
  • 9. Connect clip lead from drive amplifier input terminal 1 to recorder ground (chassis).
  • 10. Center pen by adjusting ZERO control located on amplifier board,
  • 11. Disconnect clip lead from amplifier input to ground, and connect white/black/brown wire from preamplifier.
  • 12. Turn SENSITIVITY control to OFF position.
  • Continue to operate recorder at chart speed of five millimeters per second.
  • Verify that pen is at exact chart center; if not, use PEN POSITION control and set pen at exact chart center.
  • Rotate variable SENSITIVITY X1 control throughout its entire range several times and check for any pen deflection.
  • If no pen deflection is observed, preamplifier is properly balanced.
  • If observed pen deflection is greater than 1/4 division, adjust preamplifier BALANCE control for no pen deflection while rotating SENSITIVITY X1 control throughout its entire range.
  • Set SENSITIVITY control to 100 mv/div position.
  • Apply ±2.5 V d-c ±0.1% to input terminals. Adjust SPAN control for exactly 25 divisions of pen deflection.
  • 20. Apply a 1 Hz squarewave of 25 divisions peak-to-peak amplitude. Adjust DAMPING control for best wave-form reproduction.
  • 21. Check frequency response by apply a 10 Hz sine wave 10 divisions peak-to-peak. Increase frequency to 100 Hz; amplitude response must remain flat (±1 division). Increase frequency to 125 Hz; amplitude
Page 31

FIGURE 5-1 CALIBRATION CONTROLS, DRIVE AMPLIFIER 869223

Page 32

should be 7 divisions. Adjust DAMPING control if necessary.

  • Apply a 4 Hz sine wave, 50 divisions peakto-peak. Increase frequency to 40 Hz. Amplitude should remain flat at 50 divisions, ± 1 division.
  • 23. Apply positive 3 volts d-c to input and adjust LEFT LIMIT control to bring pen 1-1/2 to 2

divisions beyond chart edge.

Apply negative 3 volts d-c to input and adjust RIGHT LIMIT control to bring pen 1-1/2 to 2 divisions beyond chart edge.

This completes until calibration. Depress chart STOP button and disconnect all test equipment. Replace unit in case (Para. 4.3) or slide unit into rack, Unit is ready for operation.

Page 33

SECTION VI

THEORY OF OPERATION

6.1 GENERAL

The Gould 220 Recorder consists of two analog channels, associated preamplifiers, permotor drive amplifiers and power supplies (Fig. 6-1). The input signal to each channel is differential balanced-to-ground or single-ended by use of ground strap. Attenuation of input signal is accomplished by controls on the front panel.

Penmotor drive amplifier is a complete servo-type system utilizing a Metrisite transducer in the penmotor to develop position and a tachometer generator to derive velocity.

6.2 DETAILED DESCRIPTION, DRIVE AMPLIFIER NETWORK ASM 869223

a. Regulated D.C. Power Supply Circuit (Figure 6-2)

Primary power to each channel is applied to transformer T-301, and rectified by full wave

rectifier bridge, CR-215. The common output point of transformer T-301 is tied to ground. The output voltages, plus and minus 32 volts d-c are applied to the output stages of the drive amplifier. Regulated plus and minus 18 volts d-c to preamplifier and to amplification stages of drive amplifier are derived from resistors R-230 and R-231, and zener diodes CR-209 and CR-210. Regulated minus 5.6 volts, derived from resistor, R-245, and zener diode, CR-208 and regulated plus 5.6 volts, an output of oscillator A-201, are applied to the pen POSITION control, R-302.

b. Drive Amplifier and A.C. Feedback Circuit (Figure 6-2)

The drive amplifier acts as an error amplifier in that the input signal is constantly compared with pen position and assures that pen position on the chart accurately displays the input signal.

The summing of the amplifier is at the input of amplifier IC-201. The input signal is summed thru

FIGURE 6-1 BRUSH 220 RECORDER - FUNCTIONAL BLOCK DIAGRAM

Page 34

THEORY OF OPERATION

Page 35

resistor, R-218. The demodulated signal from the position sensing transducer (Metrisite) is summed thru resistor R-226. Resistor, R-225, serves as a summing resistor for the zero adjustment current thru ZERO control, R-223. Resistor, R-228, serves as the open-loop feedback path for the amplifier. Resistor, R-227, sums the velocity feedback signal which is derived from a tachometer generator within the penmotor. DAMPING control, R-234, permits adjustment for optimum frequency response and waveform reproduction.

Any error voltage is amplified by amplifier, IC-201, transistors, Q-206 and Q-207, which form a phase-splitting driver stage for the output transistors, Q-208 and Q-209.

c. Left and Right Limiter Circuit (Figure 6-2)

The output of the preamplifier is applied to the base of an emitter-follower transistor, Q-204, through diode network CR-201, CR-202, CR-203, CR-204, CR-205 and CR-206. The diode network provides the necessary bias and temperature compensation to assure a stable output from the limiters. Transistor Q-205 functions as a current source and emitter load for transistor Q-204. RIGHT LIMIT adjust, R-216, and LEFT LIMIT adjust, R-220, limit the voltage swing of transistor Q-204 which instantaneously clips any excess voltage applied to the limiters.

FIGURE 5-3 PREAMPLIFIER AND SENSITIVITY SWITCH CIRCUITS

Page 36
d. 20 KHz Oscillator and Demodulator Circuits

Oscillator, A-201, contains the 20 KHz circuit. Amplitude adjustment is provided by applying a variable d-c voltage from variable resistor, R-201, to terminal 2 of the module. An additional terminal (pin 4) is provided to allow additional components to be added to oscillator control loop.

The oscillator output voltage is amplified by transistor, Q-201 and further stepped up by transformer, T-201, which has a tapped secondary winding providing two outputs. One output (tap) is applied to primary of position-sensing transducer (Metrisite). This same output is applied to Oscillator, Q-201, to correct for any change in output amplitude from transformer, T-201.

The second output voltage of transformer, T-201 is applied thru reactor, L-202, (phase-shifting coil) to the phase-sensitive demodulator consisting of transistors, Q-202 and Q-203, and resistors R-204 and R-205.

The varying output voltage from the Metrisite is then applied to the demodulator circuit across resistors, R-202 and R-207. The demodulated and

1

filtered output of the Metrisite circuit is then applied to the error amplifier thru resistor, R-226,

6.3 SENSITIVITY (ATTENUATOR) CONTROL AND PREAMPLIFIER CIRCUITS (FIGURE 6-3)

Input signals are applied to the balanced attenuator network consisting of resistors R-101 thru R-126. The differential input signal from the attenuator network is applied to the input of the preamplifier module, AR-401, thru protective resistors, R-401 and R-402.

With the variable SENSITIVITY control (R-301/S-302) in the detent (X1) position, the preamplifier assembly operates at a gain of 100 which is set by resistor, R-403. The variable SENSITIVITY control places a portion of resistor, R-301 in series with resistor, R-403, and varies the gain down to 40. The single-ended output of the preamplifier assembly is applied to the drive amplifier thru the limiter circuit.

Pen position voltage, from the wiper arm of POSITION control, R-302, is applied to a reference terminal of preamplifier module, AR-401.

Page 37

SECTION VII

TROUBLESHOOTING

7.1 GENERAL

This section contains troubleshooting hints to assist operating or maintenance personnel in isolating malfunctions that may occur during normal operation of the Gould 220 Recorder. All malfunctions are listed in sequence. Be sure to check all steps in sequence to isolate a malfunction.

7.2 ELECTRICAL POWER MALFU NCTIONS
MALFUNCTION CAUSE REMEDY
1. Recorder inoperative (lamp will not turn on) with power switch a. Unit not connected to power source a. Connect unit
depressed b. Main fuse blown
  • Beplace fuse after correcting
    malfunction (Fig.8-1, item 31)
c. Chart paper interlock switch open
  • c. Load chart paper (Para.4.2;
    adjust or replace switch
    (Fig. 8-2, item 37)
d. Power switch not making
contact 		d. Repair or replace switch
(Fig. 8-1,item 10)
7.3 CHART DRIVE MALFUNCTIC ONS
1. Unit chart will not drive with
any chart speed button 		a. Idler (fiber) gear excessively worn a. Replace idler gear (Fig. 8-1,
item 47)
depressed b. Motor defective b. Replace motor or motor/
transmission (Fig.8-1,item 54)
  • c. Chart speed switch defective
    (not supplying voltage to drive
    motor)
c. Replace chart speed switch
(Fig.8-1, item 10)
  1. Chart runs at only one, two,
    or three speeds
a. Channel 1 drive amplifier relay
power supply defective 		a. Repair or replace (Fig.8-1,
item 41)
b. Transmission relays, resistors, defective b. Replace relays or resistors
(Fig. 8-1, item 54)
c. Chart speed switch defective c. Repair or replace switch
(Fig. 8-1, item 10)
  1. Chart speed consistently not
    accurate
a. Drive roll worn excessively a. Clean or replace
4. Chart speeds erratic a. Idler (fiber) gear worn a. Replace idler (fiber) gear
(Fig. 8-1, item 47)
b. Transmission clutch springs
defective 		b. Replace transmission
(Fig. 8-1, item 54)
Page 38
7.4 PEN INKING MALFUNCTIONS
MALFUNCTION CAUSE REMEDY
1. No trace or faint trace a. Ink supply exhausted a. Replace (Para. 4-9)
(Fig. 8-1, item 13)
b. Ink cartridge screw not full
counterclockwise
  • b. Rotate screw to full
    counterclockwise position
    (Para. 4.9)
c. Ink manifold OFF/ON knobs
not in full ON position 		c. Rotate to full ON position
(Fig. 4-5)
d. Ink manifold solenoid de-
energized
  • d. Repair or replace channel 2
    (Fig. 8-1, opposite item 41)
    drive amplifier relay power
    supply
· e. Pens clogged e. Clean or replace (Para. 4.10,
4.4,4.5)(Fig.8-1, item 68 & 73)
  1. Ink trace heavy or wet; pen
    tears or gouges paper
a. Pen worn excessively a. Replace pen (Para. 4.4,4.5)
(Fig. 8-1, item 68 & 73)
b. Pen not properly lapped b. Lap pen (Para. 4.8)
  • c. Pen pressure too heavy or too
    light
c. Set pen pressure (Para.4.7)
3. All pens not on same time line a. One or more pens out of
alignment 		a. Set pen alignment
(Para. 4.4,4.5)
  1. Pen does not return to same spot;
    sloppy
a. Pen loose a. Align and tighten pen
(Para. 4.4,4.5)
b. Band loose or broken b. Tighten or replace band
(Para. 4.7)
7.5 SIGNAL MALFUNCTION
1. Trace unusually wide a. Noise appearing at pen tip. a. Depress STOP button. If
noise continues, repair or
replace drive amplifier
(Fig. 8-1, item 41). If noise
ceases, release STOP button
and turn SENSITIVITY con-
trol to OFF position. If
noise continues, replace pre-
amplifier (Fig. 8-1, item 44).
If noise ceases, check signal
source and signal input
connections.
Page 39

TROUBLESHOOTING

MALFUNCTION CAUSE REMEDY
2. No signal on either or both channels a. Drive amplifier or preamplifier defective a. Replace drive amplifier or pre-
amplifier (Fig.8-1, item 41 & 44
b. Drive amp fuse(s) blown b. Replace fuse(s) after cor-
recting malfunction
(Fig. 8-7, F-201, F-202)
c. Chart speed switch defective c. Replace switch (Fig.8-1,item 10)
3. Pens limp or biased to either side a. Drive amplifier or preamplifier defective a. Repair or replace drive
amplifier or preamplifier
(Fig. 8-1, item 41 & 44)
b. Recorder requires calibration b. Calibrate recorder (Sec. V )
c. Pen loose c. Align and tighten pen
(Para, 4,4,4.5)
d. Band loose or broken d. Tighten or replace band
(Fig. 8-2, item 6)
Page 40

SECTION VIII

PARTS IDENTIFICATION
8.1 GENERAL

This equipment has been accurately calibrated and adjusted before shipment from the factory and should give long, trouble-free service. For servicing beyond the scope of the instructions contained in this manual or the technical equipment available, contact your nearest Gould Service Engineer listed on the warranty card shipped with the equipment.

The following parts lists and schematic diagrams are designed to assist in servicing and repairing the equipment. For replacement parts, refer to the appropriate Figures and their parts lists. The items listed present the lowest assembly or part but do not necessarily imply they are for sale. Contact

your local branch for availability of salable components, assemblies or parts.

To assure prompt and satisfactory delivery of replacement parts, include the following with the purchase order:

  • 1. Name and model number of the instrument.
  • 2. Description of the part as listed in the manual.
  • 3. Gould part number.

NOTE: Do not use the SYMBOL NUMBER from the parts lists for identifying desired parts on the order.

Page 41

GOULD 220 RECORDER ALL MODELS - EXPLODED VIEW FIGURE 8-1

ITEM PART DESCRIPTION SYMBOL
NO NUMBER NO
1 127457 Strap, Ground
2 126395-13 Post, Binding J-301, J-302, J-303
3 266558 Bracket
4 2-128693-1 Grommet
5 266494 Box, Metallic
DS 201
6 128327 Lamp 03-301
| 7 266063 Lampholder
8 869022 Manifold
9 246552-1 Button C 201
10 264930 Switch, Pushbutton 5-301
11 232660-4 Clamp
12 766243 Ink Plunger Asm
13 11-2730-01 Ink Cartridge Asm
14 269633 Bracket 1
15 269567 Switch 1
16 11.6101.21 Timer, 60 Hz 2 (see Fig. 8-5)
17 269259 Switch, Pushbutton 1
18 866211 Cover Asm
19 10-241145-224 Capacitor C-301,C-302, C-101
1101 1102 1204
20 265873-2 Jack, Banana 1-305 1-306 1-307
21 266107-5 Bail Asm (5 pc set)
22 265814-6 Terminal Board TB-302
23 265860 Bar, Support
24 267280 Relay 3 K-301
25 267362 Bracket 3
26 267377 Jack, Switch 3 J-309
27 267423 Jack, 24-48 Volts 3 J-308
28 465913-13 Plate, ID. Blank
29 Part of Item 21
30 109669 Holder, Fuse

1Model 15-6327-57, 58 only 2Optional accessory equipment

3Model 15-6327-51 only

Page 42

GOULD 220 RECORDER ALL MODELS - EXPLODED VIEW (Continued) FIGURE 8-1

31 116198-29 Fuse (50,51,55,57) F-301 31 266924.9 Fuse (56,58) F-301 32 108572-11 Strain Relief P-301 33 108572-11 Strain Relief Stole K-2-3 34 240224 Switch X-3 S-101,S-307 35 267454 Cover S-101 36 667453 Insulator S-301 37 B65977 Switch Aam (Fig. 8-8) S-101 39 246393-202 Resistor, Variable R-301 40 246394-502 Resistor, Variable R-302 41 B69223 Network, Drive Amp (Fig. 8-6) C-303 42 124804-5 Clamp (60 Hz units) C-303 43 10-261998-824 Capacitor (50 Hz units) C-303 44 766409 Network, Preamplifier (Fig. 8-7) S-101 45 666614 Shield Asm C-303 46 2-240731-11 Ring, Retaining C-303 50 265906-2 Gear, Spur, Idler S-1056 51 266873 Post ITEM
NO 		PART NUMBER DESCRIPTION SYMBOL
NO
31 116198-29 Fuse (50,51,55,57) F-301 32 126295-7 Cable, input P-301 33 108572-11 Strain Relief P-301 34 240224 Switch 2.3 Strain Relief S-101,S-307 35 267454 Cover S-101,S-307 36 667453 Insulator Same as item 4 S-101 38 865977 Switch Asm (Fig. 8-8) S-101 40 246393-202 Resistor, Variable R-301 41 869223 Network, Drive Amp (Fig. 8-6) C-303 42 124804-5 Clamp (60 Hz units) C-303 43 10-261998-824 Capacitor (50 Hz units) C-303 44 766409 Network, Preamplifier (Fig. 8-7) G-303 45 666614 Shield Asm Gear, Spur, Idler 48 232250-2 Bearing, Roller Gastifier 49 23260-3 Clamp, Gol Hz units) G-303 50 265906-2 Gear, Spur, Idler Seed (60 Hz) 51 266873 Post Gar, Spur (50 Hz units)
32 126295-7 Cable, fighth 1 cont 33 108572-11 Strain Relief 5:101,5:307 34 240224 Switch 2.3 5:101,5:307 35 267454 Cover 5:101,5:307 36 667453 Insulator Same as item 4 5:101 39 246393-202 Resistor, Variable R:301 40 246394-502 Resistor, Variable R:302 41 869223 Network, Drive Amp (Fig. 8-6) 7:303 42 124804-7 Clamp (60 Hz units) C:303 43 10-25906-105 Capacitor (50 Hz units) C:303 44 766409 Network, Preamplifier (Fig. 8-7) 666614 45 666614 Shield Asm C:303 46 2-240731.11 Ring, Retaining C:303 47 243515 Gear, Spur, (60 Hz units) C:303 50 265806-2 Gear, Spur (60 Hz units) 50 51 266873 Post S:10168 52 767269 Transmission Asm 4 Speed (50 Hz) 54 865917 31
31 		116198-29
266924-9 		Fuse (-50,51,55,57)
Fuse (-56,58)
Cable Jacut 		F-301
F-301
P-301
36 667453 Insulator 37 Same as item 4 Same as item 4 38 865977 Switch Asm (Fig. 8-8) S.101 39 246393-202 Resistor, Variable R-301 40 246394-502 Resistor, Variable R-301 41 869223 Network, Drive Amp (Fig. 8-6) R-302 42 124804-5 Clamp (60 Hz units) C-303 43 10-261998-824 Capacitor (60 Hz units) C-303 43 10-261998-824 Capacitor (60 Hz units) C-303 44 766409 Network, Preamplifier (Fig. 8-7) St 45 666614 Shield Asm C-303 46 2-240731-11 Ring, Retaining C-303 47 243515 Gear, Spur, Idler C-303 48 232260-3 Clamp Colored Statistics Statistics 50 265906-1 Gear, Spur (50 Hz units) Statistics Statistics 51 266873 Post Statistics Asm 4 Speed (50 Hz) Statis 32
33
34
35 		108572-11
240224
267454 		Strain Relief
Switch 2,3
Cover 		$-101,S-307
37 Same as item 4 S-101 38 246393-202 Resistor, Variable R-301 40 246394-502 Resistor, Variable R-301 41 869223 Network, Drive Amp (Fig. 8-6) R-302 42 124804-5 Clamp (60 Hz units) C-303 43 10-261998-824 Capacitor (50 Hz units) C-303 43 10-25905-105 Capacitor (50 Hz units) C-303 44 766409 Network, Preamplifier (Fig. 8-7) S-66614 45 666614 Shield Asm C-303 46 2-240731-11 Ring, Retaining C-303 47 243515 Gear, Spur, Idler S-101 48 232260-2 Bearing, Roller C-303 49 232660-3 Clamp Clamp 50 265906-1 Gear, Spur (50 Hz units) C-303 51 266873 Post Fig. 8-10) 52 767269 Timer, 1/10 Second 3 (Fig. 8-10) Secold (60 Hz) 54 865917 Transmission Asm 4 Speed (60 Hz) Secold Hz) 54 36 667453 Insulator
41 869223 Network, Drive Amp (Fig. 8-6) 42 124804-5 Clamp (60 Hz units) C-303 43 10-25906-105 Capacitor (60 Hz units) C-303 44 766409 Network, Preamplifier (Fig. 8-7) C-303 45 666614 Shield Asm C-303 46 2-240731-11 Ring, Retaining C-303 47 243515 Gear, Spur, Idler C-303 48 232260-2 Bearing, Roller C-303 49 232260-3 Clamp Clamp 50 265906-2 Gear, Spur (60 Hz units) C-303 51 266873 Post Stimer, 1/10 Second 3 (Fig. 8-10) 52 767269 Timer, 1/10 Second 3 (Fig. 8-10) Stimer, 501, R-502 54 865917 Transmission Asm 4 Speed (60 Hz) Stimer, 501, R-502 54 881811 Transmission Asm 8 Speed (50 Hz) Stimer, 501, R-502 54 881990 Transmission Asm 8 Speed (50 Hz) Stimer, 501, R-502 54 881990 Transmission Asm 8 Speed (50 Hz) Stimer, 501, R-502 269945-3 Transmi 37
38
39
40 		865977
246393-202
246394-502 		Same as item 4
Switch Asm (Fig. 8-8)
Resistor, Variable
Resistor, Variable 		S-101
R-301
R-302
46 2-240731-11 Ring, Retaining 47 243515 Gear, Spur, Idler 48 232250-2 Bearing, Roller 49 232660-3 Clamp 50 265906-2 Gear, Spur (60 Hz units) 50 265906-1 Gear, Spur (50 Hz units) 51 266873 Post 52 767269 Timer, 1/10 Second 3 (Fig. 8-10) 53 265836 Gear, Spur 54 865917 Transmission Asm 4 Speed (60 Hz) 54 866706 Transmission Asm 8 Speed (50 Hz) 54 881811 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 232495 Relay 4 K-501, K-502 285921-2 Motor (50 Hz units) 4 B-501 269945-6 Idler Belt (8-speed only) 269945-6 269945-8 41
42
42
43
43
44
45 		869223
124804-5
124804-7
10-261998-824
10-125905-105
766409
666614 		Network, Drive Amp (Fig. 8-6)
Clamp (60 Hz units)
Clamp (50 Hz units)
Capacitor (60 Hz units)
Capacitor (50 Hz units)
Network, Preamplifier (Fig. 8-7)
Shield Asm 		C-303
C-303
51 266873 Post 52 767269 Timer, 1/10 Second 3 (Fig. 8-10) 53 265836 Gear, Spur 54 865917 Transmission Asm 4 Speed (60 Hz) 54 866706 Transmission Asm 4 Speed (50 Hz) 54 881811 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 54 881990 Transmission Asm 8 Speed (50 Hz) 55 86011 Diode 4 CR-501,CR-502 285921-2 Motor (60 Hz units) 4 B-501 269945-7 Motor Belt B-501 269945-8 Transmission Belt 56 56 120903-214 Bumper 57 11-6404-30 Cover 3 (see Fig. 8-4) 46
47
48
49
50
50 		2-240731-11
243515
232250-2
232660-3
265906-2
265906-1 		Ring, Retaining
Gear, Spur, Idler
Bearing, Roller
Clamp
Gear, Spur (60 Hz units)
Gear, Spur (50 Hz units)
5-115558-182 Resistor 4 R-501, R-502 130198-1 Diode 4 CR-501, CR-503 232495 Relay 4 K-501, K-502 285921-2 Motor (60 Hz units) 4 B-501 286011 Motor (50 Hz units) 4 B-501 269945-7 Motor Belt B-501 269945-8 Transmission Belt 55 56 120903-214 Bumper 57 11-6404-30 Cover 3 (see Fig. 8-4) 58 266209-4 Handle 59 266823 Lable, Channel ID 60 285921-1 Fan 4 – Plastic 51
52
53
54
54
54
54
54 		266873
767269
265836
865917
866706
881811
881990 		Post
Timer, 1/10 Second 3 (Fig. 8-10)
Gear, Spur
Transmission Asm 4 Speed (60 Hz)
Transmission Asm 4 Speed (50 Hz)
Transmission Asm 8 Speed (60 Hz)
Transmission Asm 8 Speed (50 Hz)
1 Model 15-6327-67,58 only 3 Model 15-6327-51 only 55
56
57
58
59
60 		5-115558-182
130198-1
232495
285921-2
286011
269945-7
269945-6
269945-8
466007
120903-214
11-6404-30
266209-4
266823
285921-1
266412-1
1 Model 15-6327-67,58 only 		Resistor 4
Diode 4
Relay 4
Motor (60 Hz units) 4
Motor (50 Hz units) 4
Motor Belt
Idler Belt (8-speed only)
Transmission Belt
Case
Bumper
Cover 3 (see Fig. 8-4)
Handle
Lable, Channel ID
Fan 4 – Plastic
Fan – Metal
3 Model 15-6327-51 only 		R-501, R-502
CR-501, CR-502
K-501, K-502
B-501
B-501
Page 43
GOULD 220 RECORDER ALL MODELS - EXPLODED VIEW (Continued) FIGURE 8-1
DESCRIPTION SYMBOL
NO
866000 *Recorder Subasm (see Fig. 8-2)
62 000000 Same as Item 2
67 231182 Nut Locking
64 246388 Cover, Panel
65 231183 Knob
66 665563 Knob Asm
67 665796 Cover Asm
68 11-2873-20 Pen Asm, Event
69 666587 Tubing, Event Pen
70 11-2123-32 Event Marker Asm, RH
71 Same as Item 68
72 11-212 3- 31 Event Marker Asm, LH
73 11-2823-33 Pen Asm, Analog
74 667277 Tubing, Analog Pen
75 246415 Nut, Knurled
76 246422-1 Switch S-305,S-306
77 10-241145-224 Capacitor a C-303
2
  • Optional accessory equipment
3 Model 15-6327-51 only
4 Part of transmission asm, item 54

NOTE: Items marked with asterisk (*) are not available at this level. Replace either components of the item or the next larger assembly.

Page 44

GOULD 220 FIG. 8-1

Page 45
GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW RECORDER SUBASM 866000 FIGURE 8-2
PART NUMBER DESCRIPTION SYMBOL
NO
Ň 065965 **Plate Asm, LH
1 21 110022.2605 Screw
2 11205.37 Washer
3 21 241009.0002 Screw, Cao
4 290593 Washer, Band Clamping
b 203000
6 680294 Band Asm
7 Not Used
8 31-129647-26 Nut, Hex
G 31-121166-2602 Set Screw
10 782332 Drive Arm Asm*
004000 Permotor Asm (includes items 2.3.4 4,5,6,8,9, & 10)
11 86 1993 Sorew Can
12 31-119922-6210 Shield
13 266871 Bar Mounting Permotor
14 365500 Transformer T-301
15 265542 Hanatornici
16 265975 Shaft, Straight
117 743915-10 Arm Asm, Sensor
18 681946 Lever Asm
19 865715 Panel Asm, Front, Silkscreen (-50, - 51, -55, -56)
110 869667 Panel Asm, Front, Silkscreen (-57, - 58)
20 243623 Spring Positioning
242622 Pad. Friction
21 665789 Lever Asm, BH
22 365792 Catch, Cover
23 865852 **Plate Asm, RH
24 2.128693-3 Grommet, Caterpillar
25 2 120000 0
26 643919-10 Disc Asm, Friction
27 1-264521-2 Spring, Compression
28 108400-15 Insulation, Sleeve
29 130327-8 Insulation
30 1-240031-3 Spring, Helical
1 110105 204 Washer Plain
31 742012 10 Arm Subasm Brake
32 743913-10 Scraw Hex Head
33 31-119924-0200 Terminal Board TB-301
34 1 2650404 Bracket, Angle
35 1-200049-4 Ordenety Angle
36 265741-1 Bearing 6 00 1
37 266326 Switch, Sensitive S-304
38 665593 Roll, Drive
39 765507 Chute, Paper
40 266014 Deflector, Paper

*This part should only be replaced by an authorized Brush Service Representative

**Non replaceable item. Consult factory in event replacement is necessary.

Page 46
GOULD 220 RECORDER ALL MODELS -- EXPLODED VIEW (Continued) RECORDER SUBASM 866000 FIGURE 8-2
ITEM
NO 		PART NUMBER DESCRIPTION SYMBOL
NO
41 865596 Table Asm, Writing (see Fig. 8-3)
42 666465 Supply Roll Asm
43 265860 Bar, Support
44 243440 Bumper
45 1-227070-9 Ring, Retaining
46 243856-1 Nut, Push-on
47 265745-1 Washer, Nylon
48 240731-10 Ring, Retaining
Page 47

GOULD 220 RECORDER SUBASSEMBLY FIG. 8-2

Page 48
GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW WRITING TABLE ASM 865596 FIGURE 8-3
ITEM
NO 		PART NUMBER DESCRIPTION
1 343617-910 Support Asm, Left
2 765585 Bar Asm, Writing
3 343616-910 Support Asm, Right
4 765591 Paper Release Asm
5 4-112468-21 Pin, Spring
6 1-210761-6 Bearing
7 365534 Roll, Pressure
8 243867-1 Packing, Preformed
9 665854 Bar Asm, Pull
10 466842-1 Label
Page 49

GOULD 220 WRITING TABLE ASSEMBLY FIG. 8-3

Page 50
GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW COVER ASM 11-6404-30 1 FIGURE 8-4
ITEM
NO 		PART NUMBER DESCRIPTION SYMBOL
NO
1
2
3
4
5 		867226
114816-15
267379
11-6403-00
367493 		Panel Subasm
Plug (24-28 Volts)
Plug, Switch
Converter, AC-DC
Cover 		P-308
P-309
6
7
8 		867208
267201-2
267201-1
267490-2 		Cover Subasm
Fastener, Draw Bolt
Latch (not shown)
Fastener

1Used with Model 15-6327-51 only.

Page 51

GOULD 220 COVER ASSEMBLY FIGURE 8-4

Page 52
GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW ACCESSORY ONE-SECOND TIMER, 11-6101-21 FIGURE 8-5
ITEM
NO 		PART NUMBER DESCRIPTION SYMBOL
No
1
2
3
4 		267186
364621
267171
267154 		Switch
Cam
Bracket
Motor 		S-102
B-101

FIGURE 8-5 ONE-SECOND TIMER, MODEL 11-6101-21

Page 53
GOULD 220 RECORDER ALL MODELS - EXPLODED VIEW NETWORK, DRIVE AMPLIFIER 869223 FIGURE 8-6
SYMBOL
NO 		PART NUMBER DESCRIPTION
A-201 269062 Oscillator Module
C-201 231922-106 Capacitor
C-202 10-125904-203 Capacitor
C-203 243037-108 Capacitor
C-204 10-247116-333 Capacitor
C-205 269255-107 Capacitor
C-206 287614-101 Capacitor
C-207 243037-108 Capacitor
C-208 10-247116-153 Capacitor
C-209 241513-506 Capacitor
CR-201 244311 Semiconductor, Diode
CR-202 231869 Semiconductor, Diode
CR-203 244311 Semiconductor, Diode
CR-204 244311 Semiconductor, Diode
CR-205 231869 Semiconductor, Diode
CR-206 244311 Semiconductor, Diode
CR-207 231869 Semiconductor, Diode
CR-208 241133 Semiconductor, Diode
CR-209 5.244922-20 Semiconductor, Diode
CR-210 5-244922-20 Semiconductor, Diode
CR-211 244311 Semiconductor, Diode
CR-212 231869 Semiconductor, Diode
CR-213 231869 Semiconductor, Diode
CR-214 244311 Semiconductor, Diode
CH-215 265420-2 Rectifier, Bridge
CR-216 231887 Semiconductor, Diode
CR-217 269256-7 Semiconductor, Diode
CR-218 231887 Semiconductor, Diode
CR-219 231887 Semiconductor, Diode
CR-220 231887 Semiconductor, Diode
F-201 116198-7 Fuse
F-202 116198-7 Fuse
IC-201 230062 1
semiconductor, IC
L-201 263453-1 Coil
L 202 263453-1 Coil
Q-201 230057-2 Transistor, 2N4922
0.202 240236 Transistor, 2N1303
0-203 240237 Transistor, 2N1302
0-204 242323 Transistor
1-205 240237 Transistor, 2N1302

P

Page 54
GOULD 220 RECORDER ALL MODELS -- EXPLODED VIEW NETWORK DRIVE AMPLIFIER 869223 (continued) FIGURE 8-6
SYMBOL
NO 		PART NUMBER DESCRIPTION
0.206 242323 Transistor
0.207 247149 Transistor
0.208 267718-3 Transistor, 2N4900
0.200 267716-3 Transistor, 2N4912
0.205 207710-0
B-201 282299-502 Resistor, Variable
B-202 1-128182-3601 Resistor
8.203 5-115557-151 Resistor
B-204 5-115557-103 Resistor
8.205 5-115557-103 Resistor
11-200 0.10000.100
R-206 1-128182-1502 Resistor
8-207 1-128182-1502 Resistor
B-208 1-128182-4701 Resistor
R-209 1-128182-2501 Resistor
B-210 282299-502 Resistor, Variable
R-211 1-128182-6801 Resistor
R-212 1-128182-91671 Resistor
R-213 1-128182-1103 Resistor
R-214 5-115557-822 Resistor
R-215 1-128182-1501 Resistor
200000 202 Besister Verieble
R-216 282299-202 Resistor, Variable
R-217 1 100100 5000 Perinter
H-218 1 128 182-5002 Resistor
R-219 1-126 162-3901 Resistor
Resistor Variable
R-220 202299-202
B-221 1-128182-2501 Resistor
B-222 1-128182-5601 Resistor
B-223 282299-502 Resistor, Variable
B-224 1-128182-5601 Resistor
B-225 1-128182-1103 Resistor
R-226 1-128182-2702 Resistor
R-227 5-11 5557-273 Resistor
R-228 1-128182-5003 Resistor
R-229 1-128182-5002 Resistor
R-230 5-115558-181 Resistor
Decision
R-231 5-115558-271 Resistor
R-232 5-115557-183 Resistor
R-233 5-115557-183 Resistor
Deviator Mariable
R-234 282299-103 Resistor, Variable
R-235 5-115557-471 nesistor
B-236 5-115557-471 Resistor
B-237 5-115557-471 Resistor
R-238 5-115557-471 Besistor
R-239 5-115557-332 Besistor
R-240 5-115557-332 Resistor
1-240 0-11000/-00E
Page 55
GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW NETWORK DRIVE AMPLIFIER 869223 (continued) FIGURE 8-6
SYMBOL
NO 		PART NUMBER DESCRIPTION
R-241
R-242
R-243 		5-115557-103
5-115557-122
Not Used 		Resistor
Resistor
R-245 5-115557-102 Resistor
R-246
R-247
R-248 		5-115558-220
5-115559-152
5-115559-152 		Resistor
Resistor
Resistor
T-201
Not shown 		263516
265763-3 		Transformer
Male Contact(mates to 265760-2)
Page 56

GOULD 220 NETWORK ASSEMBLY FIGURE 8-6

Page 57
GOULD 220 RECORDER ALL MODELS - EXPLODED VIEW PREAMPLIFIER ASM 766409 FIGURE 8-7

Page 58
GOULD 220 RECORDER ALL MODELS - EXPLODED VIEW SWITCH ASM 865977 FIGURE 8-8
SYMBOL
No 		PART NUMBER DESCRIPTION
R -101 50-128182-2504 Resistor
R-102 50-128182-1504 Resistor
R-103 50-128182-5003 Resistor
R-104 50-128182-2503 Resistor
R-105 50-128182-1503 Resistor
R-106 50 128182-5002 Resistor
R-107 50-128182-2502 Resistor
R-108 50-128182-1502 Resistor
R-109 50-128182-5001 Resistor
R-110 50-128182-2501 Resistor
R-111 50-128182-1501 Resistor
R-112 50-128182-5000 Resistor
R-113 50-128182-5000 Resistor
R-114 50-128182-2504 Resistor
R-115 50-128182-1504 Resistor
R-116 50-128182-5003 Resistor
R-117 50-128182-2503 Resistor
R-118 50-128182-1503 Resistor
8-119 50-128182-5002 Resistor
R -120 50-128182-2502 Resistor
R-121 50-128182-1502 Resistor
R-122 50-128182-5001 Resistor
R-123 50-128182-2501 Resistor
R-124 50-128182-1501 Resistor
R-125 50-128182-5000 Resistor
R-126 50-128182-5000 Resistor
S-101 265504 Switch
Page 59

Page 60

PARTS IDENTIFICATION

GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW MANIFOLD ASM 869022 FIGURE 8-9

ITEM
NUMBÉR 		PART
NUMBER 		DESCRIPTION SYMBOL
NUMBER
1 467355-6 Knob, Ink Control
2 467355-5 Screw, Operator
3 269683 Spring
4 236865-2 Cotter Pin
5 365991 Lever, Operator
6 265990 Link, Connecting
7 249360 Cap, ink Outlet
8 684169-2 Valve Assembly
9 365907 Bracket, Mtg.
10 236865-3 Cotter Pin
11 266888 Solenoid 1,301
12 2-128693-3 Grommet 2.001
13 666582 Tube, Cartridge-to-Manifold
14 686076 Manifold Assy
15 265989 Shaft
Page 61

GOULD 220 MANIFOLD ASSEMBLY FIG. 8-9

Page 62
GOULD 220 RECORDER ALL MODELS – EXPLODED VIEW NETWORK ASM, 1/10TH SECOND TIMER 1 FIGURE 8-10
SYMBOL
NO 		PART NUMBER DESCRIPTION
C-601 10-243601-685 Capacitor
C-602 240352-102 Capacitor
CR-601 130198-1 Diode, 1N2069
CR-602 244477 Diode, 1N981B
CR-603 243481 Diode, 4E040
CR-604 130198-1 Diode, 1N2069
K-601 267200 Relay, Reed
R-601 5-115557-272 Resistor
R-602 244771-502 Resistor, Variable
R-603 5-115557-392 Resistor
R-604 5-115558-331 Resistor
R-605 5-115557-220 Resistor

1Used with Model 15-6327-51 only

Page 63
GOULD 220 RECORDER ALL MODELS -- EXPLODED VIEW ACCESSORY CHART TAKEUP ASM -- 11-6402-03 FIGURE 8-11
ITEM
NO 		PART NUMBER DESCRIPTION
12 249618-1
243867-5 		Plate Cover, Left
O Ring
3 267257 Pulley
4 243696 Retainer, Bearing
5 1-210761-7 Bearing
6 246651 Roller, Guide
7 246307 Block
8 767254-3 Arm Asm, LH
19 3-249640-8206 Screw, Flat Head
10 666123 Shaft Asm (includes bearing part no. 230069-1)
11 767249-3 Arm Asm, RH
12 249617-1 Plate Cover, Left
13 267253 Spring Compression
14 266184 Shaft, Shouldered
15 243740 Collar
16 4-112468-14 Pin, Roll
17 266053 Shaft
18 266046 Pulley
19 236865-3 Pin, Cotter
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The numbers and voltages on this page refer to the numbers and voltages on schematic 269587.

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GOULD 220 CHART TAKEUP ASSEMBLY FIGURE 8-11

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SECTION IX

SCHEMATICS

9.1 GENERAL

This section contains the schematics for all of the standard recorders and their components and accessories. The following table lists each model number and the appropriate schematic.

MODEL NO. SCHEMATIC NO.
15-6327-50 266559
15-6327-51 267486
15-6327-55 266918
15-6327-56 266921
15-6327-57 269684
15-6327-58 266192
11-6221-00 (Event Marker) 267 22 4
11-6101-21 (1 sec. Timer) 267216
869223 (Drive Board) 269587
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Gould Inc. Instrument Systems Division Cleveland, Ohio 44114 U.S.A.

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