Radio Shack 26-1154A, line printer II TRS-80 Service Manual

LINE

PRINTER

n

Catalog

Number

26-1

154A

mmmm\

USS

NOTE

The

purpose

of this

manual is twofold.

It

provides the

owner with

complete

adjustment procedures

and it

provides Radio Shack

Service Personnel

with

complete repair

procedures.

If

you are

not technically inclined,

do not attempt

to repair

your Printer. If

you do,

you'll void your warranty.

TABLE

OF

CONTENTS

SECTION

1

INTRODUCTION

Section

1.1

SCOPE

1.2

GENERAL

DESCRIPTION

1.3

PHYSICAL

DESCRIPTION

1.4 FUNCTIONAL

DESCRIPTION

1.5

SPECIFICATIONS

SECTION

2

INSTALLATION

2.1

INSPECTION

2.2

INTERFACE

INFORMATION

2.2.1

Printer

Interface

Connector

.

2.2.2

Interface

Connector

Pin-Outs

.

2.2.3

Interface

Drivers

and

Receivers

.

2.2.4

Interface

Communication

and

Timing

2.2.5

Host-Generated

Control

Codes

.

2.2.6

ASCII

Code

Charts

2.3 AUTO

LINE

FEED

ENABLE/DISABLE

....

2.4

CHARACTER

SET

SELECTION

SECTION

3

THEORY

OF

OPERATION

3.1 BASIC

DESCRIPTION

SECTION

4

MAINTENANCE

4.1

GENERAL

4.2

PREVENTIVE

MAINTENANCE

4.3

OPERATOR

TROUBLESHOOTING

Page

1-1

1-1

1-2

1-4

1-7

2-1

2-1

2-1

2-2

2-2

2-3

2-4
2-5

2-9

2-9

3-1

4-1

4-1

4-3

-l-

TABLE OF CONTENTS

(cont'd)

Section

Page

4.4

FUSE REPLACEMENT 4-4

4.4.1

Removal

of Covers 4-4

4.4.2 Fuse Replacement

4-6

4.5

DETAILED TROUBLESHOOTING 4-7

4.6

GENERAL CLEANING AND LUBRICATION 4-10

SECTION

5

ADJUSTMENTS

5.1 INTRODUCTION

5-1

5.2

TOOLS AND

ACCESSORIES

5-1

5.3

PRINTHEAD

GAP ADJUSTMENT 5-2

5.4

PLATEN

ADJUSTMENT 5-2

5.5 ROTOR/HALL EFFECT

SENSOR ADJUSTMENT 5-3

5.6 LINE FEED

SOLENOID ADJUSTMENT 5-3

5.7 PRINT DENSITY

(SPEED) ADJUSTMENT 5-4

SECTION

6

REMOVAL AND REPLACEMENT

6.1 SCOPE

6-1

6.2 MECHANISM ASSEMBLY

6-1

6.3

PCB

LOGIC BOARD 6-3

6.4 LINE FEED SOLENOID ASSEMBLY 6-5

6.5 CARRIAGE

RACK, MOLDED

.

6-5

6.6 BASE COVER

ASSEMBLY

6-7

6.7 BODY

COVER

ASSEMBLY 6-7

6.8 HEAD

CARRIAGE ASSEMBLY 6-9

6.9 PLATEN ASSEMBLY.

6-10

SECTION

7

SUPPORTING ILLUSTRATIONS

-ii-

TABLE

OF

CONTENTS

(cont'd)

SECTION

8

ILLUSTRATED

PARTS

BREAKDOWN

Section

Page

8.1

INTRODUCTION

8-1

8.2

ABBREVIATIONS

8-1

8.3

MECHANICAL

PARTS

BREAKDOWN

8-4

8.3.1

Figure

and Item Number

8-4

8.3.2

Part Number

8-4

8.3.3

Description

8-4

8.3.4

Quantity

8-4

8.4 ELECTRICAL

PARTS

BREAKDOWN

8-22

8.5

NUMERICAL

INDEX

LIST

8-27

8.5.1

Part

Number

.

8-27

8.5.2

Description

8-27

8.5.3

Figure

and

Item Number

8-27

8.5.4

Quantity

8-27

APPENDIX

A

ADJUSTABLE

PIN-FEED

DRIVE

ROLLER

-ill-

LIST OF ILLUSTRATIONS

Figure

Page

1-1

Printer

Assemblies

1-3

1-2

Pictorial Schematic

1-5

2-1

Top

View

of Printer Interface

Connector

2-1

2-2

Interface Drivers and Receivers

2-2

2-3

Interface Timing

2-4

2-4

ASCII Code

Chart

(U.S.A., France)

2-6

2-5

ASCII

Code Chart

(United Kingdom, Germany)

2-7

2-6

ASCII

Code Chart (Italy,

Sweden/Finland)

2-8

2-7

Setting

Auto Line Feed and Character Set Switches ....

2-9

3-1

Line

Printer II Basic Block Diagram

3-1

3-2

Line Printer

II

Character Styles

3-3

3-3

Interface Timing

3-4

3-4

Acknowledge Timing on

Power-Up

3-5

4-1

Replacement of

Fuse F1

4-5

6-1

Mechanism Assembly

Replacement

6-2

6-2

Logic

Board

Replacement

6-4

6-3

Line Feed Solenoid Replacement

6-6

6-4

Carriage Rack Replacement

6-6

6-5

Base and Body

Cover

Assembly Replacement

6-8

6-6

Head-Carriage Assembly Replacement

6-10

6-7

Platen Assembly Replacement

6-11

7-1

PCB Part No. 63669422 Schematic Diagram

7-2

7-2

PCB Part

No.

63669416 Scrematic Diagram

7-3

8-1

Line

Printer II Major Assemblies

8-4

8-2

Body Cover Assembly

8-6

8-3

Mechanism Assembly

8-8

8-4

Printer Head/Carriage Assembly

8-12

8-5

Left/Right Side Plate Assemblies

8-14

8-6

Base

Cover Assembly

8-16

8-7

Paper Roll

Holder Assembly

8-18

8-8

Main Acoustic

Kit

8-20

8-9

Logic P.C.B. Assembly

8-22

-IV-

SECTION

1

INTRODUCTION

1.1

SCOPE

This

manual

contains

detailed

information

on the

installation,

theory

of

operation,

maintenance,

and

adjustment

of

the Radio

Shack

Line

Printer

II

dot-matrix

printer.

The

contents

of

the

manual

are for

use

by

qualified

service

personnel who

have

been

trained

to

maintain

and

repair

electronic

and

electromechanical

equipment.

Care

must

be

exercised

when

servicing

the

printer

to

avoid

possible

damage

to the

printer

or injury

to

personnel.

1.2 GENERAL

DESCRIPTION

The

Line

Printer

II

is

an

operationally

simple,

compact,

microprocessor

controlled,

dot-matrix,

impact

printer.

The

unit

prints

7x7 dot

matrix

characters

at

10 or 16.7

characters

per

inch

in

line

lengths

up

to

8 inches

at

a rate

of

100

characters

per second.

The

printer

features

three-way

paper

handling.

(1) 9

1/2-inches

(9-inches

pin-to-pin)

wide

standard

computer

fanfold

forms, with

fixed

position

pins

to

ensure

pinfeed

paper

registration.

The

paper can

be

multipart

up

to three

parts.

(2)

Rolled

paper,

3

1/2-to

8

1/2-inches

wide,

1-inch

core

and up

to

5-

inches

diameter.

The

printer

includes

a

roll

paper

holder.

A

built-in

rip-and-read

cutting

edge

allows

easy

removal of

paper.

The

first

line

of following

page is

printed

within

five

lines

of

tear

edge. Two

ply paper

may

be

used

with

operator

attendance.

(3)

Single

sheets

of

8 1/2-inch

wide

paper,

hand

fed

as with

an

ordinary

typewriter.

The

printer

contains six

dip

switch

selectable

character

sets

of the

following

countries:

U.S.A.,

France,

United

Kingdom,

Germany,

Italy

and

Sweden/Finland.

Characters

are

printed

at

up to

80

characters

per

line in

the

10

cpi

character

density

and

up

to 132

characters

per line

in

the

16.7

cpi

character

density.

Elongated

characters

are

double-width

characters

and

can

be printed

in

either

the

10

cpi

or 16.7

cpi

character

density.

Other

significant

features

include:

(1)

Reliable

free-flight

head.

(2)

Microprocessor

technology.

(3)

Full

line buffer.

(4)

Fast

carriage

return

at 10

inches

per

second.

(5)

Special

line

feed buffer

for

host-controlled

forms

control.

(6)

Compact

size

(5-inches high

x 14

1/2-inches

wide

x

11-inches

deep)

1-1

1.3 PHYSICAL DESCRIPTION

A

printer mechanism, printed circuit

board, cover

assembly set,

and

holder

for roll

paper

comprise the major assemblies of the

printer. See

Figure

1-1.

The three cover set

provides structural

support

and consists

of a

base cover,

a body cover, and

a

top

cover. The

base

cover supports

the

printed circuit

board

and the printer

mechanism.

The body

cover fits over

and

around the base

cover and contains

a

flat

tray for

the ribbon.

It also

houses

the ribbon

drive motor

and gear mechanism.

The top

cover snaps into

the body

cover

and

prevents contact with the

print

mechanism

and electronics.

Printed

paper exits through

a slot

in

the rear of the

cover which

has

a

serrated

edge

to provide

a tear bar for removing

printed pages.

The printed

circuit board

(pcb) contains

all the

printer

electronics

including

an "on board" DC

power

supply

with

an input

transformer, filter

capacitors,

and fuse.

The pcb fits underneath

the

printer mechanism

and

is

approximately

the

same size as the bottom

cover although

the

electronic

circuitry

requires only about

one-third of

this

area.

This

allows the printed

circuit

input edge card

connector, which

protrudes from the

bottom

rear of the

printer,

to be an integral

part

of

the

pcb

for

increased

reliability. It

also

allows the POWER ON/OFF

and ONLINE/OFFLINE

switches, which

protrude

from

the

bottom

front to

be

mounted

directly on

the pcb.

The printer

mechanism

consists of

a left

and right

end plate which

secure

the carriage assembly shafts

and

carriage

rack, the platen,

and the

paper feed

roller

assemblies. A solenoid

attached to the left

end plate

provides the

drive for

paper movement. The

solenoid is

mechanically

linked by

a

pawl which

engages a ratchet

on the

paper feed roller.

When the

solenoid is

energized

the

paper feed roller is

rotated

incrementally resulting

in

a

forward

(upward) movement of

paper one-sixth

inch

(4

mm) or one

line.

The

carriage assembly is

driven

back and

forth on the

carriage

shafts

by the

drive motor pinion

gear which engages

the

rack. The

print head

is

transported

along the

platen

by

the motion

of the

carriage

assembly. A

flexible

cable

connects the drive motor

and print

head solenoids

to the

pcb.

1-2

00899

PAPER

EXIT

SLOT

ONLINE/OFFLINE

SWITCH

SERRATED

EDGE

PRINTED

CIRCUIT

BOARD (PCB)

BODY

COVER

PRINTER

ASSEMBLY

POWER

ON/OFF

SWITCH

Figure

1-1.

PRINTER

ASSEMBLIES

1-3

1.4 FUNCTIONAL DESCRIPTION

Figure

1-2

is

a pictorial diagram

of

the Line

Printer

II. All

of

the logic,

control, and power supply

circuits

are contained

on

the logic

pcb

(printed circuit

board)

.

The printer

employs

a microprocessor

located

on the

logic pcb to control

printer operation.

Under

program

control

the

micro-

processor controls

the

receiving

of input

data

from

the host

device,

monitors

printer

status,

initiates and controls

movement

of the

carriage

assembly,

controls

printing

by

the print head,

and

controls

paper movement.

It monitors

the

position

of the

print head

at

all times

and

provides

printer

status

information

to the host

device.

The host

device

transmits

8-bit

parallel

(ASCII)

data and

a data

strobe

signal

to the

printer logic

pcb.

Control

of the

transmission

of data

betwe

en the

host

device and

the printer

accomplished

using

the

acknowledge

(ACK)

,

BUSY,

and DEMAND

signals.

Data

tra

nsmitted

by

t

he

host

device

is

strobed

into

the

logic

pcb circuits

by the DATA

STROBE

signal.

The

printer

responds

by sending

a

BUSY

signal to

host

device

indicating

printer

is opera-

ting

on the

data. After

processing

the data

the

printer

sends

an acknowledge

signal

to

the

host and the

BUSY signal

is

discontinued.

The DEMAND

signal

is

the

inverse

of the

BUSY signal

and when

present

indicates

to the

host that the

printer

is

not

busy and

can accept

data.

The input

data

applied to

the

printer consists

of

character

data and

control

code data.

Character

data

is

stored

in an

input

buffer

until

the data

is

to be printed.

Control codes

are

interpreted

as

instructions

by

the

printer

and provide

the

means for

host

control of

the

printer.

Input

character

data is

stored in

the

input

buffer

until

the buffer

is full,

or until

a carriage return

(CR)

control

code

is received.

A

CR

control

code

is

interpreted as

a print

command

by the

printer.

Receipt

of a

CR

control

code by the printer

intitiates

printing

of the

contents

of the

input

buffer.

Printing is

also initiated

when

the

input

buffer

becomes

full.

In the

10 cpi mode buffer

full is

80

characters

while in

the

16.7 cpi

mode

buffer full

is

132 characters.

Characters

are printed by

selectively

energizing

the

print head

solenoids

which

in turn activate

the

pins of

the

print head

which

are arranged

in

a column.

As the

print head is

moved across

the

paper the

appropriate

pins

are

activated

driving

them against

the ribbon

paper,

and

platen to

form

characters

in

a 7x7 dot

matrix.

The

print

head is

mounted

on the

carriage

assembly.

Printing

occurs

only when

the

carriage is

moved

from left

to

right.

When the

printer is

turned

on

and after

printing

each line,

the

print

head

is

moved to

the left

side

of the

printer

mechanism.

The

carriage

assembly

is

driven

by a

reversible

dc

motor

mounted

on the assembly.

When

a

print

command

(CR) is

received

the

motor is

energized,

the

carriage assembly

is

moved in

the

forward

direction,

and the

contents

of

the

input

buffer

is

printed.

As

the

carriage assembly

moves,

an

encoder

wheel (which

has

magnets

imbedded

in it)

is

rotated.

The

column

sensor

(Hall

effect

device)

senses

when

each

of the

magnets

moves

past

it

and generates

column sense

signals

which

are

used to

synchronize

the

print

head

solenoids.

Upon completion

of

printing

a

line of

data,

the polarity

of the

dc voltage

applied to

the carriage

drive

motor

is

reversed

and the

carriage

assembly

is

moved to the left

side

of

the

printer.

1-4

Figure

1-2.

PICTORIAL

DIAGRAM

1-5

Paper is

automatically moved up one

line after

each line is printed

or whenever a

line feed

(LF) control code is sent by the host

device.

When

a

line

feed

is to be

executed, the

line feed solenoid is momentarily energized

which

causes the paper feed roller

to move the paper one line. The automatic

line

feed

function may be disabled. However, if this function is

disabled,

the

host device must transmit at least one LF command prior

to

sending

a

print

command

(CR)

or a

full line of character data or overprinting will

occur.

Line feed (LF) commands may

be

intermixed

with input character data

and multiple

line feed commands may be sent by

the host device. A special

line feed buffer

is provided

which

can

store up

to 255 pending line feeds.

The

initial

line feed received causes

an

immediate

advance

of

one

line.

Because

of the

time required

to execute

a

line

feed is relatively

long

(160

milliseconds) with

respect

to the input

data rate

(9300

characters

per

second)

subsequent line feeds

are stored

as

a count

in

the

line

feed

buffer.

All

line

feeds are executed prior to printing

the line of data.

The

printer uses

a

Mobius strip

ribbon configuration

which allows

printing

on the upper and lower portions

of the ribbon on alternate passes

of

the ribbon thereby increasing ribbon life. The

ribbon drive motor

(ac)

is

energized at

all

times except when the print

head is at the left-most position.

This insures

proper movement of the ribbon through the ribbon

path and compen-

sates for

the movement of the print head in

both forward

and reverse directions.

1-6

1.5

SPECIFICATIONS

1-1.

The

specifications

for

the Line

Printer

II

are contained

in Table

Table

1-1.

Specifications

Ribbon

(12

per

box)

Paper

Printing Speed

Characters Per

Line

Print Width

Character

Structure

Line Feed

Buffer

Line

Feed

Repeat

Rate

Vertical

Spacing

Horizontal

Spacing

Parallel Data

Input

Connector

Parallel

Interface

Cables

Code

Character

Set

Input

Character

Format

Input

Data

Rate

Input

Voltage/Frequency

Power

Requirements

Size

Weight

15-yard zip

pack Mobius

strip

Cut

Sheets

(8

1/2-inches

wide)

Rolls

(3

1/2-inches

to 8

1/2-inches

wide

x 5-inches

diameter

with

1-inch

Core) , 2

ply

Fanfold

(9-inches

pin-to-pin)

, 3 ply

28

lines

per minute

(1pm) at

80 characters

per line

(cpl) or

74

1pm at 20

cpl left

justified

80 maximum

@

10 cpi/132

maximum

@

16.7 cpi

8

inches

maximum

(204 mm)

7x7 Dot

Matrix

Capacity

for

255

pending

line

feeds.

9 linefeeds/second

6 lines

per

inch

10

characters

per inch/16.7

characters

per inch

40-pin

PC

edge

connector

Maximum

length:

10

feet

Type:

Twisted

pair

Gauge:

26 AWG

Standard

ASCI

1-2

Dip

switch

selectable

for

U.S.A.,

France,

United

Kingdom,

Germany,

Italy

and

Sweden/Finland

8 parallel

data

bits.

Up to

9300

characters/

second.

120 Vac

+_10%

60

Hz

100 Watts

14 1/2-inches

W x

11

-inches

D

x

5-inches H;

(368 mm)

x

(279 mm)

x

(127 mm)

12 pounds

(5.4 Kg)

1-7

SECTION

2

INSTALLATION

2.1

INSPECTION

Visually

inspect the

printer for

signs

of damage

received

during

shipment.

Notify the

common carrier

immediately

of any

discrepancies.

NOTE

Any

attempt to operate

a damaged

printer

voids

the warranty

and may cause

further

damage.

2.2 INTERFACE

INFORMATION

2.2.1 PRINTER

INTERFACE

CONNECTOR

A 40-pin

printed

circuit edge-card

connector

located

at

the left

rear

of

the

printer

provides

the means for

connecting

the

printer

to an input

device. The

physical

and electrical

characteristics,

pin

orientation,

and

connector

pin-outs

of

the printer

interface

connector

are shown

below.

COVER OUTLINE

K

15°

TYP

0.02x45°

CHAMFER

PIN 40

I

f

0.75

0.035

KEY

BETWEEN

PINS

36 &

38

PINS

ON

.100

M-s

0.88

Figure 2-1.

TOP

VIEW OF

PRINTER

INTERFACE

CONNECTOR

2-1

2.2.2 INTERFACE

CONNECTOR PIN-OUTS

Table

2-1

shows

interface

connector

pin

numbers and

the input

and

output

signals at

each pin.

Table

2-1

.

Printer

Interface

Connector

Pin-Outs

PIN

SIGNAL

PIN

1

DATA STROBE

2

3

DATA

BIT

1

4

5

DATA

BIT

2

6

7

DATA

BIT

3

8

9

DATA BIT

4

10

11 DATA

BIT

5

12

13 DATA BIT

6

14

15

DATA

BIT

7

16

17 DATA

BIT

8

18

19

ACKNOWLEDGE (ACK)

20

21

BUSY

22

23 ALWAYS

LOGIC

(GROUND)

24

25

ALWAYS

LOGIC

1 (+5V)

26

27

SIGNAL

GROUND

28

29

NOT

USED

30

31

SIGNAL

GROUND

32

33 CHASSIS

GROUND

34

35

+5V

SIGNAL

(P.S.

ON)

36

37 NOT

USED

38

39 NOT

USED

40

SIGNAL

TWISTED

PAIR

GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR

GROUND

TWISTED

PAIR GROUND

TWISTED

PAIR GROUND

TWISTED

PAIR

GROUND

NOT

USED

ALWAYS

LOGIC

1

GROUND

PIN

32 JUMPERED

TO PIN

34

FOR

SENSING PRINTER

CONNECTED

DEMAND
NOT

USED

NOT

USED

(DATA STROBE)

(DATA BIT

1)

(DATA BIT

2)

(DATA BIT

3)

(DATA BIT

4)

(DATA

BIT

5)

(DATA

BIT

6)

(DATA BIT

7)

(

DATA

BIT

8)

(ACKNOWLEDGE)

(BUSY)

(DEMAND)

2.2.3 INTERFACE

DRIVERS AND

RECEIVERS

Figure

2-2

illustrates the

requirement

for

drivers

and

receivers

used

in the

interface.

All

levels

are TTL

compatible.

LO

=

0.4 volts

HI

=

2.4

volts

@ 400ua

@ 1 6ma

O

<

LO

=

0.4 volts

HI

=

2.4

volts

@

7ma

@

O.Oma

IK

t>

DRIVER

RECEIVER

00844

All

input/output

signals

are

TTL

compatible.

Figure 2-2.

INTERFACE

DRIVERS

AND

RECEIVERS

2-2

2.2.4 INTERFACE COMMUNICATION

AND TIMING

The

paragraphs

below

describe the interface

communication

signals.

Figure

2-3

illustrates the interface timing.

Data Strobe (Host Generated)

The

data strobe (DATA STROBE) signal is

a negative

going

pulse which

is used

to transfer the incoming data from the host

into the

electronic

circuitry of the

printer. The pulse duration

must be a minimum

of one micro-

second. The

relationship of the leading

and trailing

edges of the DATA STROBE

signal with the

leading and trailing edges of the

input data

signals must be

as shown in the

interface timing diagram

(See Figure 2-3)

Data Lines (Host

Generated)

The eight input data lines

provide the

means to transfer

bits 1

through

8 of the ASCII character

data and control

code data. The

presence

of logic

1 bits is indicated

by positive going signals.

Acknowledge

(Printer Generated)

The acknowledge (ACK) signal is

a negative

going signal

which indi-

cates that

the printer has

processed the latest

data transferred from

the

host

.

No

new data

can

be sent

to the

printer until

the leading

edge of

the

ACK

pulse has

occurred. If the

printer receives

a carriage return

(CR)

control code, or

if

the printer

print buffer

or line feed buffer

becomes full,

the acknowledge pulse will

not occur until

after the

line has been

printed

or

until the

line feed buffer

becomes only

partially full.

Busy

(Printer Generated)

The

BUSY

signal is

a positive going signal

which

indicates

the time

when the printer

cannot accept

new

data. The

BUSY

signal

goes positive on the

trailing

edge of

every data strobe pulse and

remains high

until the

leading

edge of the

acknowledge

pulse. No new data

can be

sent to the

printer while

the BUSY signal

is

high.

Demand

(Printer

Generated)

The DEMAND signal is

the inverse

of the BUSY

signal.

When high

(positive)

,

the DEMAND signal

indicates that

the

printer

can accept

data.

+5V

Signal

(Printer

Generated)

The

+5V signal (I/O Connector, Pin

35)

indicates

that the

+5V power

supply is

operating in

the printer. The

+5V signal

is intended

to

be

used for

signal

purposes only

and

it

must

not be

used

to provide

power

to external

equipment

2-3

DATA BIT

1-8

J.

nin

I

min

[

I

I

«1us

min

>

\

-

1

us

,Xl

us

»

mm

|

min

1

h

lus

min

00840

i

(

DATA STROBE

*100us

11

HI

±5us

<(

1

ACK

! r

50ns

max

1

5us

>u

'

±0.! s

*"

BUSY

50ns

J

max

"

—

\)

—

H

-•-50ns

DEMAND

*

100

usee

is for

data

reception and

line

feeds

that

do not fill

the line feed

buffer.

For

line feeds

that

fill

the

buffer,

the time

is 1

1

msec

+10%, -0%.

For

carriage

return

codes,

the maximum

time is

2.6 seconds.

In

approximately

10%

of the

data

transfer

cycles

(strobe

to ACK cycles)

a micro-

processor

interupt

occurs

which

extends

the

busy

time from

a

nominal

1 00 usee

to approximately

200

usee.

Figure 2-3.

INTERFACE

TIMING

2.2.5 HOST-GENERATED

CONTROL

CODES

Control

code data is

sent

to the

printer

along

with

character

code

data via

the input

data lines.

Control

codes

are sent

as

data,

but

are

interpreted

as instructions

by

the

printer.

A

summary

of

the

control

codes

and

control

code

sequences

recognized by

the

printer

is

shown

below.

Each

of

the control

codes

is described

in

detail

in

the

following

paragraphs.

Function

Full

Line

Feed

Forward

Print

Command

Start

Elongated

Characters

Stop

Elongated

Characters

Select

10 cpi

Character

Density

Select

16.7

cpi

Character

Density

Mnemonic

Decimal

Octal

Code

Hex

Code

LF

10

012

0A

CR

13

015

0D

ESC

SO

27,14

033,016

1B,0E

ESC,

SI

27,15

033,017

1B,0F

ESC,

DC3

27,19

033,023

1B,13

ESC, DC4

27,20

033,024

1B,14

Line

Feed

(LF)

Code

Each

line

feed

(LF)

code

received

by

the

printer

causes

the

paper

to

be

advanced

one line.

Line feed

codes

are

received

at

the

same

rate

as

character

data

(up

to

9300 characters

per

second.)

When

multiple

line

feed

codes

are

sent

to the

printer,

the

initial

line

feed

code is

acted

upon

immediately

and

the

additional

line

feed

codes

are

stored

in

the

line

feed

buffer

as

a

count.

If

more

than

255 lines

feeds

are

received

the

printer

will

go BUSY,

and

no

more

data

can

be sent

to

the

printer

until

pending

line

feeds

have

been

processed

and

the

line feed

buffer

is

partially

full.

Line

feed

codes

and

character

data

can be

intermixed,

however

all line

feeds

in

the

buffer

will

be

processed

before

the

next

line

is

printed.

2-4

Carriage

Return

(CR)

Code

The

carriage

return (CR)

code serves

as

a print

command to

the

printer.

Data is

received

by the

printer

and stored

in the

print

buffer

until

a

CR

code

is

received.

Upon receipt

of

a

CR

code,

the

contents of

the

print

buffer

are

printed.

If

the print

buffer

is

filled,

a

CR code

is

generated

by the

printer

and

the line

is

printed.

The print

head

is

returned

to the

left

margin

after

the

content

of

the

print

buffer is

printed.

ESC, SO;

ESC,

SI Code

Sequence

and Data

Bit

8 Control

The ESC,

SO

code

sequence

(or bit

8

logically

high)

initiates

printing

of

elongated

characters

(doublewidth

characters.)

The ESC,

SO code

sequence

may be sent

to

the printer

at any

time

during

the

transmission

of

a line of

character

data

(up to

40 characters.)

Reception

of

an ESC

SI code

sequence

(or

bit

8

logically

low) causes

all data

following

the

code

sequence

to be

printed

normal

size.

The

end of a

print

line

terminates

printing

of

elongated

characters.

The

next

line of data

will

be

printed

as standard-width

characters

unless

an ESC,

SO

code

sequence is

received

during

the

transmission

of the

character

data

for that

line.

ESC,

PCI;

ESC,

DC3

Code

Sequence

The

primary

character

density is

10

cpi,

selected

by the

printer

logic during

initialization,

or by ESC,

DC3.

The ESC,

DC4

code

sequence

selects

the

16.7 cpi

character density.

The

print

buffer

is

set

to 80 char-

acters

for

10 cpi and

132

characters for

16.7

cpi.

The

16.7

cpi

character

density

is

deselected

by

sending

an

ESC,

DC3

code

sequence

or

at the

end of

a

print

line.

2.2.6 ASCII

CODE CHARTS

Figures 2-4

through

2-6

are the

ASCII

code

charts

showing

the

96

ASCII

characters

for

the six

different

character

sets,

the

codes for

the

various

characters,

and the

control

codes

recognized

by the

printer.

2-5

-%.

% \ %

\

1

°o

1

°1

1

io

\

k\

b

4

b

3

t

b

2

t

^Column

1 2

3

4 5

6

7

NUL

DLE

Space

I? P

4-

p

1

1 SOH

DC1

1

1

A

Q

a

a

1

2

STX

DC2 2

B

R

h

r

1 1

3

ETX

DC3 *

3

C

S

c s

1

4

EOT

DC4 * 4 D

T

d

t

1 1

5

ENQ

NAK

•/.

5

E

U

e

u

1 1 6 ACK SYN

8

6

F

V f

V

1

1 1 7

BEL

ETB

1

7 G

W

G

u

1

8

BS

CAN

<

8

H

X

h

y^

1 1

9

HT EM

)

9

I

Y

i

y

1 1 10(A)

LF SUB

*

:

J

Z

J

Z

1

1 1

11

(B)

VT

ESC

+

?

K t

k

<

1

1

12(C)

FF

FS

r

L.

\

1 1

1 1

1 13(D)

CR GS

-

=

H

3

M >

1 1 1

14(E) SO RS

.

>

N

*

|-|

-»

1

1 1 1

15(F)

SI

US /

?

<-

O

CONTROL

CODES

A.

U.S.A.

STANDARD

~%.

On

°0

°°1

%

\ \

\

1

1

\

kA

b

4

t

b

3

t

b

2

t

^\Column

1

2

3 4 5

6

7

NUL DLE

Space

n

*

P

-

p

1

1

SOH

DC1

1

i

A

Q a

Q

1

2

STX DC2

2

B

R

h

r

1 1

3

ETX DC3

f.

3 C

S

c

s

1

4

EOT

DC4 *

">

D

T

d

t

1

1

5

ENQ

NAK

•/.

5

E

U

e

u

1 1 6

ACK

SYN X b

F

V f

V

1 1 1 7 BEL

ETB

'

7 G

W

G

w

1

8

BS

CAN

(

8

H

X

h

1

1

9

HT

EM

)

9

I

Y

i

y

1 1

10

(A)

LF

SUB

*

:

J

7.

J

z

1

1 1 11 (B)

VT

ESC

+

t

K

°

k

£

1

1

12(C)

FF

FS

f

L

C

1 d

1 1

1

13(D)

CR

GS

-

=

M

5

M

£

1 1 1 14(E) SO RS

•

N

A

n

1

1

1 1

15(F)

SI

US /

->

o

CONTROL

CODES

B. FRANCE

STANDARD

Figure

2-4.

ASCII

CODE

CHART

2-6

"!i.

On

°0

°°1

%

\

\

1

o,

1

io

\

k\

b

4

+

b

3

t

b

2

t

i

^\Column

1 2

3

4 5

6

7

NUL

DLE

Space

e

P + p

1

1

SOH DC1

!

1

A

Q

3

a

1

2

STX DC2 2

E:

R

h

r

1 1

3

ETX

DC3

£

3

C

S

c s

1

4

EOT

DC4

*

4

D

T

d

t

1 1

5

ENQ

NAK

%

5

E

U

e

u

1

1 6 ACK SYN X

6

F

V f

V

1 1 1 7

BEL

ETB

7

G

w

G

u

1

8

BS

CAN ( 8

H

X

h

yt

1 1

9

HT EM

)

9

I

Y

i

H

1

1 10(A)

LF SUB

X

:

J

7 J

Z

1 1

1

11 (B)

VT

ESC

+

*

K r

k {

1 1

12(C)

FF FS

r

L \

1

1

1

1 1

13(D)

CR GS

-

=

M

] M >

1 1 1 14(E) SO RS

•

N *

n

-»

1 1

1 1

15(F)

SI

US /

?

_

o

CONTROL

CODES

STANDARD

C.

UNITED KINGDOM

^7k

^5

"!!U

On

°0

\ %

\

1

°o

S

1

io

\

kA

b

4

b

3

t

b

2

+

^\Column

Row^-v^

1

2

3

4 5

6

7

NUL

DLE

Space

S

P

^

p

1

1 SOH

DC1

|

1

A

3

o

1

2

STX

DC2 2

B

R

h

r

1 1

3

ETX

DC3

*

3

C

S

c

s

1 4

EOT

DC4

$

1 D

T

d

t

1 1

5

ENQ

NAK

7.

cr

E

U

e

i_i

1

1 6 ACK SYN 8

6

F

V f

V

1

1

1

7

BEL ETB

'

7 C

w

6

w

1

8

BS

CAN < 8

H

X

h

::

1 1

9

HT EM

)

9

I

Y

i

y

1 1 10(A)

LF

SUB

%

:

J

7

J

z

1 1

1

11

(B)

VT

ESC

+

i

K

S

k

3

1

1

12(C)

FF FS

t

L

1 6

1 1 1

13(D)

CR GS

-

=

M

M

U

1 1 1

14(E) SO RS

•

N

A

n

ft

1 1

1

1

15(F)

SI US /

?

...

o

CONTROL

CODES

STANDARD

D. GERMANY

Figure

2-5.

ASCII CODE CHART

2-7

\t>5

"!^_

On

°0

o

0l %

\

\

\

\ \

kA

b

4

b

3

t

b

2

b

1

*

^^Column

Row^\

1 2

3 4 5

6

7

NUL DLE

Space

S

P

6

p

1

1 SOH

DC1

1

1

A

Q

3

a

1

2

STX

DC2 2

E5

R

h

r

1 1

3

ETX DC3

£

3 C

B

c s

1

4

EOT

DC4

*

4

D

T

d

t

1

1 5

ENQ

NAK

y.

5 E

U

e

u

1 1

6 ACK SYN 8

6

F

V

f

V

1 1 1

7

BEL

ETB

i

7 G

w

G

w

1

8

BS

CAN

< 8 H

X

h

;:

1

1

9

HT

EM

)

9

I

Y

i

y

1 1

10 (A)

LF

SUB

X

:

J

Z

J

z

1

1 1 11 (B) VT

ESC

+

J

K

o

k *

1 1

12(C)

FF FS

t

L

£

1

<b

1 1

1

13(D)

CR GS

-

=

M

1 M

&

1

1

1 14(E)

SO RS

•

N

A

n

i

1

1 1

1

15(F)

SI

US /

? -

o

CONTROL

CODES

E.

ITALY

STANDARD

^b

~!^_

°0

°°1

°io

'1

1

°o

s %

\

k\

b

4

b

3

b

2

t

b

1

^\Column

1 2

3 4 5

6

7

NUL DLE

Space

6 P

&

p

1

1

SOH DC1

|

1

A

Q 3

a

1

2

STX DC2

2

B

R

b

r

1

1

3

ETX

DC3

* 3 C

S

c

5

1

4

EOT

DC4 X 4

D

T

d

t

1

1

5

ENQ

NAK

Z

5

E

U

e

u

1 1 6

ACK

SYN « 6

F

V f

V

1 1 1

7

BEL

ETB

'

7 G

W

G

u

1

8

BS

CAN ( 8 H

X

h

X

1

1

9

HT

EM

)

9

I

Y

i

H

1 1

10

(A)

LF

SUB

X

:

J

Z

j

z

1

1 1 11 (B)

VT

ESC

+

*

K

A

k 3

1 1

12(C)

FF FS

r

< L.

1 6

1 1

1

13(D)

CR GS

-

=

M

A n

3

1 1 1 14(E) SO RS

•

N

u n

u

1

1 1 1 15(F)

SI

US /

7

_

o

CONTROL

CODES

STANDARD

F. SWEDEN/FINLAND

Figure

2-6.

ASCII

CODE CHART

2-8

2.3

AUTO

LINE FEED

ENABLE/DISABLE

The

Automatic Line

Feed (ALF)

function

is

controlled

by

a DIP

switch

(Section

1

of

SW3) on the logic P.C.B.

(Refer

to

Figure

2-7)

. The

printer is

shipped

from the factory

with

this switch

in

the ON

position

(Auto

Line Feed

Enabled)

.

If

the auto line feed

is to

be

disabled,

set the

switch

in the

OFF

position.

2.4 CHARACTER

SET SELECTION

The unit

can print

character

sets

of six

countries:

U.S.A.,

France,

United

Kingdom,

Germany,

Italy

and

Sweden/Finland.

The table

in

Figure 2-7

shows

the settings

of Sections

2,

3 and 4 of

SW3

for the

various

character sets.

To

select the desired

character

set, place

the

POWER

switch

in

the OFF

position;

remove the top

cover

and

select the

character

set

per

Figure 2-7.

Replace

the

top cover and

restore

power. NOTE:

The

unit is

shipped

from

the factory

configured

for

the

U.S.A.

character

set.

NOTE:

POSITION

1 ON

SW3

IS SHOWN

IN

THE

AUTO

LINE FEED

ON

POSITION

CHARACTER

SET

POS

ON SW3

2 3

4

USA

FRANCE

UK

GERMANY

ITALY

SWED/FIN

ON

ON

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

OFF

ON

OFF

Figure

2-7.

SETTING

AUTO

LINE

FEED AND

CHARACTER

SET

SWITCHES

2-9

SECTION

3

THEORY OP OPERATION

3.1 BASIC DESCRIPTION

Figure

3-1

is a basic block diagram

of the Line Printer

II. All

logic,

control, drive, and power

supply

circuits

are contained on one

printed

circuit

board within the printer. The print

head is

mounted on

a

carriage

assembly driven by a dc motor.

Printing is

performed in the forward direction

only

(left

to

right)

,

printing up to seven

dots

per column.

The

paper drive

roller is driven by a line feed solenoid

which advances

paper

1/6

inch each

time the

line feed solenoid

is

actuated. The

ribbon drive

motor moves ribbon

past

the print

head at all times except when

the carriage assembly

actuates

the

sensor at the leftmost

carriage position.

The power supply

provides +5V

regulated,

+5V

EXT SENSE

for host device

sense,

+12V regulated for motor

drive, +17 for

solenoid drive, and +24 VAC

for the

ribbon drive motor.

The

host

device transmits 8-bit

parallel

(ASCII) data signals

and a

data strobe

signal to the printer

logic. Control of

the transfer of data is

achieved

using

the busy, demand,

and acknowledge

signals generated

by the

printer logic.

HOST

DEVICE

PRINTED CIRCUIT BOARD

8

-BIT DATA (Note

1)

I

DATA STROBE

^

BUSY

DEMAND

ACKNOWLEDGE

•

CPU

•MEMORY

•CONTROL

LOGIC

•

DRIVE

CIRCUITS

+5V EXT SENSE

I

I

Figure

3-1.

I

+5V

POWER

SUPPLY

IPRINTER

I MECHANICS

I

00837

SOLENOID

DRIVE

FWD/REV

LINE FEED

24 VAC

+12V
+17V

^

7

-PIN

PRINT

HEAD

CARRIAGE

DRIVE

MOTOR

(DC)

LINE

FEED

SOLENOID

RIBBON

DRIVE

MOTOR

(AC)

LINE PRINTER

II

BASIC

BLOCK

DIAGRAM

-J

3-1

The

printer accepts

and stores

input

character

data in

an input

buffer

until

either the buffer

is filled or

a

carriage

return

(CR)

control

code is received.

If the

buffer is filled

or

a CR

code is

received,

the

content

of the input

buffer

is printed.

Printing

of

the

characters

is

achieved

by

energizing solenoids

in the

print head

which

drive

circular

pins

against the ribbon,

paper, and platen as the

print

head is

moved by

the

carriage

drive motor forming

the characters

in

a 7x7

dot-matrix

pattern.

Upon

completion

of printing

the print

head is

moved

to

the left

margin

and

the

paper is

advanced

one line

by

energizing

the line

feed

solenoid.

Line

feed (LF)

control

codes

received

by

the

printer

control

paper

movement.

Each

line feed

code received

causes

the

paper

to be

advanced

one

line.

The

printer has

a

special

line

feed

buffer,

separate from

the

input

buffer,

which

can store

up to

255

line

feed

commands.

LF

control

codes

are

received

at the

same data

transfer rate

as

character

data

(up

to 9300

char-

acters

per

second)

.

The initial

LF

code causes

an immediate

advance

of one

line.

Additional

line feed

codes

received

are

stored

as

a count in

the

line

feed

buffer.

Line

feed

codes and

character

data

sent

to the

printer

may be

intermixed,

however,

all line

feeds

received

are

performed

before

printing

the

next

line

of data.

Automatic

line

feed

upon completion

of

printing

each line

may be

disabled

by

setting

Section

1

of DIP

switch

3 on

the

printer

logic

printer

circuit

board

to the OFF

position.

If this

function

is

disabled,

the first

line of

data will

be printed

when a

CR control

code is

received or

a buffer

full

condition

occurs.

After printing

the first

line of

data,

the print

head

is

returned

to

the left

margin

and the

paper

is not

advanced.

The second

line

(and

subsequent

lines)

of data

must have

at

least

one LF

control

code

preceed

each CR control

code

or buffer full

condition,

or

overprinting

will occur.

Line

feed

codes

may be used

for

limited

paper handling

functions.

Each

line

feed

code moves the

paper one-sixth

of

an inch.

Thus,

for

example,

if it

is desired

to move the

paper

12 inches,

72

line feed

codes

are required

before

a

CR

control

code is

sent.

On power-up

or

reset, the

printer

is preset

to

the 10

cpi

character

density.

To

select the

condensed

16.7 cpi

character

density,

an ESC,

DC4

code

sequence

is

sent to the

printer. The

input

buffer is

set

a 80

characters,

buffer

full,

for

10 cpi

and 132 characters,

buffer full,

for

16.7

cpi.

The

ESC,

DC4

code

sequence sent

within

a

line

of

data is

ignored.

The 16.7

cpi

condensed print

is

deselected

by sending

an ESC,

DC3

code

sequence

or

at the

end of

a print

line.

The

two

character

densities,

10 and 16.7

cpi

may be

elongated

anywhere

in the line.

Elongated

characters

are

double

width

characters

formed

by

printing

each

column of

dots within

each

character

twice.

Spaces

between

characters

are

also twice

as wide. This

effectively

halves the

number

of

characters

per inch

(cpi)

.

Figure

3-2

shows

the

normal

and

elongated

character

styles.

Elongated

characters

are initiated

by

using

the escape

code ESC,

SO

code

sequence

(or data bit

8 logically

high)

and

terminated

by the

escape

code

ESC, SI

code

sequence

(or data bit

8 logically

low) . Elongated

characters

are

automatically

terminated

at

the end of

a line.

Reception

of

an ESC

SO code

sequence

causes

all data following

the

code

sequence

to be

printed

elongated.

Control

code

sequence ESC,

SI causes

all data

following

the

code

sequence to

be printed normal

size.

Elongated

characters

may

be initiated

and terminated

any

number

of times within

a

line.

The

end

of a print

line

terminates

printing

of

elongated

characters,

and

unless

elongated

characters

are initiated

by

the ESC,

SO

code sequence

preceeding the

data

for the

next

line,

the

characters

in the

next line

will be

printed

normal

size.

3-2

I

•

* * z &

1

( )

X

+

»

-

•

/

1 2

3

4

5

6 7

8

9

•

•

*
t *N

=

> ?

1? A

B C D E

F G

H I J

K L M N

P Q

R S

T

U

y W

X

Y Z

C \ 1

* f

+

3

b c d

e f G

h i J

K.

1

m n O

p

a r S t u

V u

X a z

C 1 >

•>

NORMAL

CHARACTERS

(10 cpi)

I

••

=H

«.li «.

•

<

>

xc

••

9

....

/

o

:l. i">

3

'

Vii

A

'7

&

«?

_••

::::

"*:-

'\*

(>?

A

K-:

c;

r.>

&: F"

(3

1-1

:i:

V.J

k

i...

M N

CD

,::.

o

R

5:5

T U V

W

X

Y

2: i::

\

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<-•

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to

c:? d

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<3

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:i.

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«.:>

+„

«..•

\/

Ul

>i

S:*

"J**

-<:

i >

••>

ELONGATED

CHARACTERS

(10 cpi)

Figure

3-2.

LINE

PRINTER

II

CHARACTER

STYLES

3-3

Figure

3-3

shows

the printer

interf

ace

timing.

Each

set

of data bits

(1-8) sent to

the

printer is strobed

by the

DATA STROBE signal sent to

the

printer by

the host

device.

Within 50

nanoseconds

following the trailing edge

of the

DATA

STROBE signal a

BUSY signal

is generated by the

printer which is

sent to

the host

device.

The

BUSY signal informs the

host device that

the

printer

is

processing the

input

data and that no

additional data from

the host

device

will

be

accepted

by the

printer. After completion of processing the

input data an

acknowledge

(ACK)

signal is

sent to the

host device

indicating

that the data sent

by the host

device has been accepted and

processed.

Within

50

nanoseconds

following the leading edge of

the ACK signal the BUSY

signal is

terminated indicating that

the printer is again ready to accept

additional

input data.

A

DEMAND

signal is also generated by the printer and

is available

to the host device. The

DEMAND

signal

is the inverse of the BUSY

signal and

when present (positive)

indicates that the printer is not busy and

is ready to

accept data.

DATA BIT

1-8

—

•-

1us

4-

1

us

4-

u

-

s

-*-

UMlMDii

io

min

Tmin^

mm

DATA

STROBE

-u-

^.

lus

.J-ilus JL.

1us .»_

min~min

|

min

00840

.

*100us_)

V-

±5us

^

r

-ih

ACK

BUSY

50ns

max

^K

50ns

ma

is

. 1

5us

'

+0.5us

H~

50ns

DEMAND

HV

*

100 usee is

for

data

reception

and line feeds that

do not fill the

line feed buffer. For line feeds

that

fill

the buffer,

the time is 110 msec +10%,

-0%.

For carriage

return codes, the maximum time is

2.6 seconds.

In approximately 10% of

the

data

transfer

cycles

(strobe to

ACK cycles)

a

micro-

processor interupt

occurs which extends

the

busy

time from a

nominal 100 usee

to

approximately

200 usee.

Figure

3-3.

INTERFACE TIMING

The

time

be

tween

the trailing edge of the DATA STROBE

signal and the

leading

edge of the

ACK signal

(data transfer

cycle

time) varies with the

functions

to be

performed by the printer. For

normal

data inputs

and

LF

control

codes

which do not

fill the

line

feed buffer,

the duration is nominally

160 microseconds. For

LF control codes which fill

the line feed buffer, the

maximum time

is 110

milliseconds

+10,

-0%.

The maximum time

for carriage

return codes is 2.6

seconds. In approximately 10% of the

normal data

transfer

cycles

a microprocessor

interrupt occurs which extends the time

from a

nominal

100 microseconds

to

approximately 200 microseconds.

Figure

3-4

shows the acknowledge

timing

on power-up.

When

power

is

initially

turned on, approximately

20 milliseconds is required for internal

voltages

(+5V) to

stabilize. Within 30 milliseconds after

power

is turned on

the BUSY

signal is generated and

the printer remains in the BUSY condition for

the next

170

milliseconds.

The BUSY signal is then terminated

and the

printer

generates the first

acknowledge

pulse indicating that the

printer is no longer

BUSY,

is on line, and

i

s

rea

dy to accept data.

Data should

not be sent to the

printer until

the

first

ACK signal is

sent to

the host

device.

3-4

POWER ON

SWITCH

ON

OFF

+5V

LINE

BUSY

LINE

ACK

INDETERMINATE

CONDITION

FIRST

ACK

PULSE

(PRINTER

ON

LINE)

00839

Figure

3-4.

ACKNOWLEDGE

TIMING

ON POWER-UP

The POWER

ON/OFF

switch

controls

the

application

of

primary

power

to

the

printer.

When

power is

turned

on,

an LED

visible

through

the

paper

exit

slot

indicates

that

the

+5 volts is

active.

The

ONLINE/OFFLINE

switch

controls

the

printer

modes of

operation.

When

placed

in

the

ON

position,

the

printer

is

placed

in

a local mode

of

operation,

a

BUSY

signal

is

sent to

the

host

device,

the

printer

electronics

are

reset,

and the

input

buffer

is

cleared.

When

placed in

the OFF

position,

the

printer

electronics

are

reset,

the

print

head

is

returned

to the left

margin,

and the

BUSY

signal

is

discontinued

allowing

data to

be

sent by

the host

device.

If

the

switch

is

placed

in the

ON

position

when

the

printer

is processing

a line

of

data,

the

printer

will

complete

printing

the

line of

data,

return the

print

head

to the

left

margin,

then

reset

the

printer

electronics

and

clear

the

input

buffer.

If

the

printer

is

performing

multiple

line

feeds

at the

time

when

the

switch

is

placed in the

ON

position,

the

line

feed

operation

currently

being

performed

will

be completed

and

the

remaining

line

feeds

will be

processed

when

the

printer

is

returned

to

the

on-line

mode.

The

ONLINE/OFFLINE

switch

should

be

placed

in

the OFFLINE

position

when

turning

power

to the

printer

on

or off

as

extraneous

acknowledge

(ACK)

signals

can

occur

during

the

periods

when

power is

initially

turned

on

or

off.

CAUTION

Actuation

of the

ONLINE/OFFLINE

switch

results

in loss

of

data

contained

in

the

input

buffer.

3-5

SECTION

4

MAINTENANCE

4.1 GENERAL

This

section

contains

information

on

maintaining

and

troubleshooting

the

printer.

Routine

preventive

maintenance

should

be

performed

at

regularly

scheduled

intervals

to insure

satisfactory

performance

of

the

printer.

Preventive

maintenance

consists

of

periodic

lubrication,

cleaning,

and adjust-

ment

of the

printer.

The

recommended

preventive

maintenance

schedule

is

contained

in

this

section.

Troubleshooting

procedures

are

also

contained

in

this

section

which

will

aid in

isolating

malfunctions

to

defective

components

or

required

adjustments.

4.2

PREVENTIVE

MAINTENANCE

Table

4-1

contains

the

recommended

preventive

maintenance

routines

to

be

performed

and

indicates

the

recommended

frequency

of

performance.

Preventive

maintenance

may be

required

more

or

less

frequently

than

indicated

depending

upon

the

printer

application,

operating

environment,

and

type of

paper or

forms

being

used.

Tools

Required

Materials

Required

Lint-free

Cloth

Light

Lubricating

Oil

Soft-bristle

Brush

Mild

Detergent

Solution

WARNING

When

performing

preventive

maintenance

procedures,

the

POWER

ON/OFF

switch

must

be in

the OFF

position

and

the AC

input

plug

must

be

disconnected

. High

voltages

are present

in

some

locations

within

the

printer

when

the

printer

is

turned

OFF.

4-1

Table

4-1.

Preventive Maintenance

ITEM FREQUENCY

External Cleaning As Required

PROCEDURE

Clean

all external surfaces

using a

mild

detergent and

a soft, clean,

lint-free

cloth.

Internal Inspection Each Ribbon

Change

Print Head

and Each

Ribbon

Carriage Assembly Change

Print Head

General

Cleaning

Each Ribbon

Change

6 Months

Carriage Guide

Bars

6

Months

Paper

Drive

Roller

6

Months

Visually inspect

interior of printer

for

loose

wires, connectors,

and

hardware,

chafing of

cables, and

badly worn or

damaged parts.

After removing

ribbon, use

a light-

bristle brush

to carefully

remove

dust and

residue

from print head

and carriage

assembly.

Using a soft,

clean,

lint-free cloth,

gently remove

all dried

ink from the

front

of the

print head.

Perform

all

of the above procedures.

Clean

the

platen surface

using a

mild

detergent

and

water, and

a

soft,

lint-free

cloth.

Using a

vacuum

cleaner

with

a soft brush

attachment

carefully

vacuum interior

of printer

taking

care not

to damage printer.

Move

print head to

left side of

printer.

Apply

several

drops

of

lubricating

oil to

clean, lint-

free

cloth

and lightly rub

carriage

guide

bars

to remove

any build-up

of

residue.

Move

print head

to right

side

of printer

and

repeat

procedure.

Using

a

lint-free

cloth,

clean the

paper drive

roller

and plate

bushings.

After

cleaning,

apply one

drop of

light

lubricating

oil

to both

paper

roller

end

plate bushings.

Cycle

the

paper

roller

using the

thumbwheels to

allow the

oil

to seep

into the bushings.

4-2

4.3 OPERATOR

TROUBLESHOOTING

Table

4-2

lists

some malfunctions

which

may

occur,

the

probable

causes,

and

the remedies

which

may

be

performed

by

the operator

of the

equip-

ment. If

the

equipment

remains

inoperative

after

performing

the

remedies

indicated,

the equipment

should

be

serviced

by

qualified

service

personnel.

Note

that

the

warranty is

voided if

attempts

to

repair the

printer

result

in

further

damage.

WARNING

When performing

operator

trouble-

shooting

procedures,

the POWER

ON/OFF

switch

must be in

the

OFF

position

and

the AC

input

plug

must

be dis-

connected

.

High

voltages

are

present

in some

locations

within

the

printer

when

the

printer

is

turned

OFF.

Table

4-2.

Operator

Troubleshooting

Chart

TROUBLE

PROBABLE

CAUSE

REMEDY

Print

too

light.

Print

head

release

lever

open or

partially

open.

Rotate

print

head

release

lever

clockwise

to

normal

printing

position.

Worn or

defective

ribbon.

Replace

ribbon.

Roll

Paper/Cut-sheet

paper does

not

advance

properly.

Pinch

roller

release

lever

in open

position.

Pull

pinch

roller

release

lever

forward

to

closed

position.

Ribbon

does

not

feed

properly.

Ribbon

twisted

or im-

properly

loaded.

Check

ribbon

threading

and

correct

as

required.

Ribbon

drive

rollers

not

engaged

properly.

Open

and

release driven

roller.

Rotate

driven

roller

clockwise

to assure

proper

movement

of

ribbon.

Printer

completely

inoperative.

AC

input

plug

not

connected.

Paper

jam.

Fuse F1

blown.

Connect

AC

input

connector

to power

source.

Remove

power

and

carefully

clear

paper

jam. Check

condition

of

ribbon

before

returning

power.

Check

if

"Power

On" LED

is

lit

by looking

down

through

paper

exit

slot.

If

not

lit,

replace

fuse

PI.

4-3

Table

4-2.

Operator Troubleshooting

Chart

(cont'd)

TROUBLE PROBABLE CAUSE

REMEDY

Power applied/data

sent-printer

does

not print.

Cable

between

input

de-

vice and

printer not

connected

Check that

connectors at

both

ends of data input

cable

are properly

connected to mating

connectors.

ONLINE/OFFLINE

switch in

OFFLINE

position.

Place

switch in ONLINE

position.

4.4 FUSE REPLACEMENT

4.4.1 REMOVAL

OF COVERS

In order

to

replace

fuse F1,

and to

troubleshoot

and repair the

printer, it

is necessary to remove

the

covers. Refer

to Figure

4-1

and

proceed

as follows:

1

Place POWER ON/OFF

switch in

OFF position

and

disconnect

ac input

plug from power source.

Disconnect

data

input

connector.

2.

Remove

top cover by lifting

rear

edge

until latches

are clear of

body cover and then

slide

cover towards

rear of printer

to dis-

engage front clips.

3. Unthread

the ribbon

from the

print

head

carriage

assembly,

then

take up slack

in

ribbon

by

turning ribbon

drive

roller knob

clockwise.

4. Release

the two

Phillips-head

screws

at the front

of the

printer

and

the three

Phillips-head

screws at

the

rear of

the

printer.

5. Gradually

raise the

body

cover until

there is enough

room

to reach

under the

front

of the cover.

6. Reach under

the body

cover and

disconnect

the ribbon

drive

motor

cable connector from

connector

J002

on the

logic PC

board.

7.

Keep

the

body cover level

to

prevent ribbon

from

unthreading

and

set

cover to one side.

8.

To

reassemble

printer,

reverse

procedure.

4-4

RIBBON DRIVE

ROLLER KNOB

00900

RIBBON

DRIVE MOTOR

CABLE

CONNECTOR

TRANSFORMER T1

HIGH

VOLTAGE

SHIELD

FUSE

F1.

1A

SLOW

BLOW

.25D x 1.25L

BODY

COVER

BASE

COVER

Figure 4-1.

REPLACEMENT

OF FUSE

F1

4-5

4.4.2 FUSE

REPLACEMENT

Fuse F1 is located

on the forward

right-hand corner

of the

logic

pcb

adjacent to the power transformer

and POWER ON/OFF

switch.

Refer

to

Figure

4-1

and proceed as follows:

1. Remove covers to gain access to

logic

pcb mounted

on the

base

cover. (See Paragraph

4.4.1.)

2.

Loosen screw,

located

on right side

of

transformer

using

a Phillips

screwdriver.

3. Remove the

clear plastic high

voltage

shield

covering the

fuse and

AC input

circuits.

4. Remove and

replace the defective

fuse.

5. Reinstall

the high

voltage

shield.

Make

sure that

the

slotted

portion of

the shield is

under

the flat

washer.

6.

Tighten

the Phillips-head

screw

to secure

the shield

and trans-

former

.

7. Replace the

covers.

4.5 DETAILED

TROUBLESHOOTING

Table

4-3

lists

some malfunctions

which

may occur, the

probable

causes, and

the

remedies

which

may be

performed

by

qualified

service

personnel.

The

procedures

referenced in the detailed

troubleshooting

chart

should

only be

performed

by qualified

service personnel

who

have

been trained

to

maintain

and

repair

complex

electronic and

electromechanical

equipment.

Table

4-3.

Detailed

Troubleshooting

Chart

TROUBLE

PROBABLE

CAUSE

REMEDY

Head

drags

(wide

smudge on

paper)

Head

gap

improperly

ad-

justed.

Defective

head-carriage

assembly.

Adjust

printer

head

gap.

(See

paragraph

5.3.)

Replace

defective

head-

carriage

assembly.

(See

paragraph

6.8.)

Light

smudge

under

print

line.

Head

gap improperly

ad-

justed.

Defective

head-carriage

assembly.

Adjust

printer head

gap.

(See paragraph

5.3.)

Replace

head-carriage

assembly.

(See

para-

graph

6.8.)

4-6

Table

4-3.

Detailed

Troubleshooting

Chart

(cont'd)

TROUBLE

Tears

or

creases

in

paper

(jams)

Print

too

light.

Print

contrast

varies

across

print

line.

Left

hand

margin

wanders.

Prints

too

slow.

PROBABLE

CAUSE

Head

gap

improperly

ad-

justed.

Defective

head-carriage

assembly.

Head

gap

improperly

ad-

justed.

Worn

out or

defective

ribbon.

Defective

head-carriage

assembly.

Head

gap

improperly

ad-

justed.

Platen

assembly

improperly

adjusted.

Defective

head-carriage

assembly.

Defective

mechanism

assem-

bly.

Head

gap

improperly

ad-

justed.

Defective

printed

circuit

board.

Defective

mechanism

assem-

bly.

Printer

requires

general

cleaning

and

lubrication.

Rotor/Hall

effect

device

improperly

adjusted.

Print

density

(speed)

improperly

adjusted.

REMEDY

Adjust

printer

head

gap.

(See

paragraph

5.3.)

Replace

head-carriage

assembly.

(See

para-

graph

6.8.)

Adjust

printer

head

gap.

(See

paragraph

5.3.)

Replace

ribbon.

(See

Owners

Manual.)

Replace

head

-carriage

assembly.

(See

para-

graph

6.8.)

Adjust

printer

head

gap.

(See

paragraph

5.3.)

Adjust

platen

assembly.

(See

paragraph

6.9.)

Replace

head-carriage

assembly.

(See

para-

graph

6.8.)

Replace

mechanism

assem-

bly.

(See

paragraph

6.2.)

Adjust

printer

head

gap.

(See

paragraph

5.3.)

Replace

printed

circuit

board.

(See

paragraph

6.3.)

Replace

mechanism

assem-

bly.

(See

paragraph

6.2.)

Clean

and

lubricate

printer.

(See

para-

graph

4.6.)

Adjust

rotor

/Hall

effect

device.

(See

paragraph

5.5.)

Adjust

print

density

(speed)

. (See

para-

graph

5.7.)

4-7

Table

4-3.

Detailed

Troubleshooting

Chart

(cont'd)

TROUBLE

PROBABLE

CAUSE

REMEDY

Prints

too

slow,

(cont'd)

Prints

erratically

(missing

dots)

Pin No.

7

prints

too

light.

Line feed

operates

improperly.

Defective

printed

circuit

board.

Defective

head-carriage

assembly.

Defective

mechanism

assem-

bly.

Defective 7-wire

head

ribbon

cable assembly.

Defective 8049

micro-

processor

.

Defective

printed

circuit

board.

Defective FF head.

Defective

head-carriage

assembly.

Defective

platen

assembly.

Printer

requires

general

cleaning

and lubrication.

Line feed

solenoid

impro-

perly adjusted.

Defective

line feed

sole-

noid assembly.

Defective

mechanism

assem-

bly.

Defective

printed

circuit

board.

Replace

printed

circuit

board.

(See

paragraph

6.3.)

Replace

head-carriage

assembly.

(See

para-

graph

6.8.)

Replace

mechanism

assem-

bly. (See

paragraph

6.2.)

Replace

7-wire head

ribbon

cable

assembly.

Replace

8049

micro-

processor

.

Replace

printed

circuit

board.

(See

paragraph

6.3.)

Replace FF

head,

7-wire

flex

circuit.

Replace

head-carriage

assembly.

(See

paragraph

6.8.)

Replace

platen

assembly.

(See paragraph

6.9.)

Clean

and

lubricate

printer,

(See

paragraph

4.6.)

Adjust

line

feed

solenoid.

(See

paragraph

5.6.)

Replace line

feed

solenoid.

(See

paragraph

6.4.)

Replace

mechanism

assem-

bly.

(See

paragraph

6.2.)

Replace

printed

circuit

board.

(See

paragraph

6.3.)

4-8

Table

4-3.

Detailed

Troubleshooting

Chart

(cont'd)

TROUBLE

Carriage

emits

thumping

noise

while

printing.

Excessive

print

den-

sity

at

beginning

of

print

line

(over-

print)

.

No

ribbon

movement.

PROBABLE

CAUSE

Printer

requires

general

cleaning

and

lubrication.

Defective

head-carriage

assembly.

Defective

carriage

molded

rack

assembly.

Defective

mechanism

assem-

bly.

Defective

printed

circuit

board.

Defective

ribbon

drive

motor.

REMEDY

Clean

and

lubricate

printer.

(See

paragraph

4.6.)

Replace

head-carriage

assembly.

(See

paragraph

6.8.)

Replace

carriage

molded

rack

assembly.

(See

para-

graph

6.5.)

Replace

mechanism

assembly.

(See

paragraph

6.2.)

Replace

printed

circuit

board.

(See

paragraph

6.3.)

Replace

ribbon

drive

motor.

Defective

printed

circuit

board.

Replace

printed

circuit

board.

(See

paragraph

6.3.)

4-9

4.6

GENERAL

CLEANING

AND LUBRICATION

The general

cleaning and

lubrication

procedure

should

be performed by

qualified service personnel

whenever the printer requires servicing or repairs

which require the

cover assemblies to be disassembled. The

procedures should

be

performed

prior

to

performing detailed service

and

repair

procedures as

some malfunctions can be caused by dust, ribbon chaff,

paper

chaff,

residue

build-up,

or inadequate lubrication.

A. Remove the printer covers. (Refer

to paragraph

4.4.1.)

B. Visually inspect the interior of printer for loose wires,

connec-

tors,

and hardware, chaffing

of cables, and badly worn or damaged

parts.

C. Remove

the

Mechanism Assembly (refer

to paragraph

6.2)

and set it

to

one side.

D.

Using

a

light bristle brush sweep

away the

paper and dust residue

from the

printer

base

and

printed circuit

board.

E. Clean

the

print head and carriage assembly

using a light

bristle

brush to remove dust and residue.

F. Gently

remove all

dried

ink from the front

of

the

print head

using a

soft, clean, lint-free cloth.

G.

Clean

contaminated parts of the rest

of the mechanism assembly

using a freon-moistened lint-free

cloth. Pay particular

attention

to the carriage shafts and

the

paper roller end-plate bushings.

H. Clean the carriage guide bars

by applying

several drops of

lubricating oil to a

soft,

clean lint-free cloth,

then moving the

print head to the left side of printer

and lightly rubbing the

guide bars to remove residue build-up.

Move print

head to the

right side

of the

printer and clean the

left side of the guide

bars.

I.

Clean the

paper drive roller and the end

plate bushings using

a

soft, clean,

lint-free

cloth. Then

apply one drop of light

lubricating oil to both paper roller

end plate bushings.

Cycle

the paper roller using the thumbwheels

to aid the

oil to seep

into the bushings.

J.

Reassemble the

printer and continue

with service

procedures.

After completion of service,

clean all

external surfaces

using a

mild

detergent

and

a

soft,

clean, lint-free

cloth.

4-10

SECTION

5

ADJUSTMENTS

5.1

INTRODUCTION

The

printer

must

be

adjusted

to correct

certain

malfunctions

or

to

correct

marginal

operation.

Adjustment

procedures

should

also

be

performed

whenever

an affected

part

is

replaced in

the

printer.

The

following

adjustment

procedures

are

contained in

this

section.

o Printer

Head

Gap

Adjustment

o

Platen

Adjustment

o Line

Feed

Solenoid

Adjustment

o Rotor

/Hall

Effect

Sensor

Clearance

Adjustment

o Print

Density

(Speed)

Adjustment

All

of

the

procedures

contained

in

this

section

are

performed

with

the

printer

covers

removed.

Refer

to

paragraph

4.4.1

for

the

proper

procedure.

Only

the

Print

Density

(Speed)

adjustment

is

performed

with

power

applied

to

the

printer.

As

this

procedure

is

performed

with

the

covers

removed,

care must

be

taken

to

avoid

personal

contact

with

moving

parts

of the

printer

or to

areas

of the

printer

circuitry

where

dangerous

voltages

are

present.

WARNING

Care

must be

taken

when

adjusting

the

printer with

the

covers

removed

and

power

applied

to the

printer

as

injury

can

result from

contact

with

moving

parts

of

the

printer

or

areas

within

the

printer

where

dangerous

voltages

are

present.

Before

performing

any of

the

adjustment

procedures

contained

in

this

section,

the

entire

procedure

should

be

read

carefully

to

assure

that

the

procedure

is

understood,

that

the

appropriate

tools

and

accessories

are

available,

and that

the

appropriate

care

is

exercised

when

performing

the

adjustment.

5.2

TOOLS

AND

ACCESSORIES

The

procedures

contained

in

this

section

require

the

following

tools

and

accessories:

Tools

1/4-inch

common

screwdriver

1/4-inch

nutdriver

5/8-inch

nutdriver

5-1

Tools (cont'd)

No.

1 Phillips screwdriver

0.004-inch

feeler

gauge

0.005-inch feeler gauge

0.014-inch feeler

gauge

2-mm

hex key

Accessories

Linefeed

adjustment gauge

3/8-inch

ignition wrench

with overall

length less than 2

inches

Mini-Exerciser
Mini-Exerciser

interface cable

The

accessories listed above

may be

procured from Centronics,

5.3

PRINTHEAD

GAP

ADJUSTMENT

A. Remove the printer covers. (Refer

to

paragraph

4.4.1.)

B. Move the printhead

to

the

center

of the

printer mechanism.

C.

Place the

printhead release

lever

in position

3 and

insert a

0.014-inch feeler

gauge between

the nose

of the

printhead

and

the

platen.

D. Loosen

the

setscrew on the left

side of the

head carriage

assembly using

a 2-mm hex key.

E. Adjust

the cam-bushing

adjusting nut

located

under the

left side

of

the

head-carriage

assembly until

the

0.014-inch feeler

gauge

slips easily between the

printhead

nose and the

platen.

NOTE

Ensure that

the printhead

release

lever

is

maintained

in

position

3 during

this

adjustment.

P. Tighten

the setscrew loosened in

step

C. using

a 2-mm hex

key.

5.4 PLATEN ADJUSTMENT

A. Remove the

printer covers.

(Refer to

paragraph

4.4.1.)

B. Perform the printhead

gap adjustment

procedure.

(See

paragraph

5.3.)

C.

Move

the

printhead to the left

side

of the

printer.

5-2

5.4 PLATEN

ADJUSTMENT

(cont'd)

D.

Place

the

printhead

release

lever

in

position

3.

Then,

insert

a

0.014-inch

feeler

gauge

between

the

nose

of

the

printhead

and

the

platen.

E.

Adjust

left

hand

platen

screw

until

the

feeler

gauge

fits

loosely

between

the

printhead

and

the

platen.

F.

Move

the

printhead

to

the

right

side

of

the

printer.

G.

Place

the

printhead

release

lever

in

position

3 and

insert

a

0.014-mch

feeler

gauge

between

the

nose

of

the

printhead

and

the

platen.

H.

Adjust

the

right

hand

platen

screw

until

the

feeler

gauge

fits

loosely

between

the

printhead

and

the

platen.

I.

Apply

red

GLPT

insulating

varnish

to

the

left

and

right

hand

platen

screws.

5

* 5

«OTOR/HALL

EFFECT

SENSOR

CLEARANCE

ADJUSTMENT

A.

Remove

printer

covers.

(Refer

to

paragraph

4.4.1.)

B.

Loosen

the

Hall

effect

sensor

mounting

screw

on

the

head

carriaqe

assembly.

r

C

Insert

a

0.005-inch

feeler

guage

between

the

sensor

and

the

magnetic

rotor.

D.

Move

the

sensor

against

the

feeler

guage

until

the

guage

can

be

moved

with

slight

friction,

then

tighten

the

mounting

screw.

E.

Insert

a

0.004-inch

feeler

gauge

between

the

sensor

and

the

magnetic

rotor.

The

gauge

should

fit

loosely.

F.

Move

the

head

carriage

assembly

and

observe

the

rotor.

The

rotor

should

revolve

without

touching

the

sensor.

5.6 LINE

FEED

SOLENOID

ADJUSTMENT

A.

Remove

printer

covers.

(Refer

to

paragraph

4.4.1.)

B.

Loosen

the

two

solenoid

mounting

bolts

located

on

the

outside

of

the

left

printer

mechanism

side

plate

using

a

5/16-inch

nutdriver.

C

Fully

retract

the

solenoid

plunger

(move

towards

front)

and

insert

the

thick

end

(0.216

inch)

of

the

solenoid

adjustment

gauge

between

the

solenoid

housing

and

the

rubber

O-ring.

D.

Adjust

the

solenoid

lock

nut

using

a

1/4-inch

nutdriver

so

that

some

resistance

is

felt

when

the

guage

is

pulled

out.

5-3

5.6 LINE

FEED SOLENOID ADJUSTMENT

(cont'd)

E. Insert

the thin end

(0.136

inch) of the solenoid adjustment

gauge

between the

solenoid

housing

and the rubber

O-ring.

F.

Move the solenoid

housing towards the rear of the printer mechanism,

then move

the housing forward until the

pawl just engages

the

ratchet (without

rotating

the

paper drive roller)

G. Hold

the

solenoid housing in this position, tighten the two

solenoid mounting bolts, and then remove the solenoid adjustment

gauge

5.7 PRINT DENSITY (SPEED) ADJUSTMENT

A. Remove

printer

covers.

(Refer to

paragraph

4.4.1.)

B. Set

up

printer for testing with

Mini-Exerciser.

1. Connect Mini-Exerciser using

ribbon interface cable.

2. Place right-hand (outer) switch on Mini-Exerciser

in down

position (print

spaces)

3. Place POWER ON/OFF switch in OFF position.

4.

Place

ONLINE/OFFLINE

switch in OFFLINE position.

5.

Connect power cord to

a 3-wire

grounded 120

Vac, 60 Hz

outlet.

C.

Place

POWER ON/OFF switch in ON

position and observe

that

power

on LED illuminates.

D. Place ONLINE/OFFLINE switch in ONLINE position.

The print head

will

move to the

left margin, then

move

from the

left margin to

the right margin and

back. Each

time the print head

reaches

the

right margin and reverses

direction

a

line feed is executed.

This

action will continue

until

the

printer

is

turned

off

or

the

ONLINE/OFFLINE switch is

placed in the OFFLINE

position.

E. Determine the number of times the

print head moves from left to

right in one minute (lines

per minute)

by observing print

head

movement and

using

a watch or clock. The

proper rate

is

from 29

to 32 lines per minute.

F. Adjust resistor R25 until the

proper rate

(29 to

32 lines

per

minute)

is achieved.

5-4

SECTION

6

REMOVAL

AND

REPLACEMENT

6.1

SCOPE

OF

THIS

SECTION

This

section

contains

removal

and

replacement

procedures

which

should

be

performed

by

trained

service

personnel.

Some

procedures

require

special

tools

and

adjustments.

Replacement

of

the

covers

and

line

fuse

F1

is

contained

in

Section

4.

WARNING

Place

power

switch

in

the

OFF

position

and

remove

plug

from

the

wall

outlet

before

performing

any

procedures

in

this

section.

6.2

MECHANISM

ASSEMBLY

(See

Figure 6-1)

When

replacing

the

mechanism

assembly,

be

certain

to

observe

the

caution

before

step

e.

a. See

power

removal

WARNING

(paragraph

6.1).

Remove

the

top

cover

and

body

cover

as

detailed

in

paragraph

4.4.1.

b.

Carefully

unplug

the

ribbon

connector

from

J001

at

the

middle

of

the

printed

circuit

board

and

unplug

the

line

feed

solenoid

connector

from

J003.

c.

Release

the

mechanism

assembly

from

the

printer

base

by

pulling

out

slightly

on the

retaining

tabs

at

both

sides.

Lift

the

mechanism

assembly

up

and

out.

d.

Carefully

unplug

the ribbon

cable

from

the

connector

on

the

carriage

and

save

the

cable

for

the

replacement

mechanism.

CAUTION

Before

installing

replacement

mechanism

assembly,

check/adjust

the

following

clearances:

print

head

to

platen,

Hall

effect

sensor

to

magnetic

rotor,

and

line

feed

solenoid

clearances

as

detailed

in

Section

5. IMPORTANT

-

Move

the

carriage

to

the

right

side

before

in-

stalling

the

replacement

mechanism

assembly;

otherwise,

the RTP

actuator

arm

may

erroneously

be

positioned

to

the

left

side

of

the

RTP

assembly,

which

would

result

in

damage

to

the

carriage

rack.

6-1

TOP COVER

ASSEMBLY

BODY COVER

ASSEMBLY

00903

MECHANISM

ASSEMBLY

RETAINING

TAB

(1

OF

2)

LOCATOR

SLOT IN

BASE

Figure

6-1.

MECHANISM

ASSEMBLY

REPLACEMENT

6-2

e.

Install

the

replacement

mechanism

assembly

by

carefully

indexing

the

side

plates

into

the

locator

slots

in

the

base,

then

lock

the

retaining

tabs

into

the

slots

on

the

side

plates.

f.

Install

the

ribbon

cable,

plugging

it

carefully

into

the

sockets

on

the

carriage

and

the

printed

circuit

board.

The

ribbon

cable

must

loop

behind

the

strain-relief

bar

on

the

carriage

assembly.

g.

Plug

the

solenoid

connector

into

J003

and

reassemble

the

body

cover

and top

cover

as

detailed

in

paragraph

4.4.1.

6.3

PCB

LOGIC

BOARD

(See

Figure

6-2)

When

replacing

the

logic

pcb,

removal

of

the

assemblies

is

required

as

follows

a.

See

power

removal

WARNING

(paragraph

6-1).

Remove

the

cover

assemblies

as

detailed

in

paragraph

4.4.1.

b.

Remove

the

mechanism

assembly

per

paragraph

6.2.

c.

Remove

one

Phillips-head

screw

at

the

left

front

corner

of

the

PCB

and

two

Phillips-head

screws

at

transformer

T1.

Save

the

transformer

heat

shield

and

plastic

high

voltage

(fuse)

shield

for

replacement.

CAUTION

When

removing

the

pcb

from

the

base,

or

when

inserting

the

replacement

pcb,

take

care

not

to

damage

the

switches,

which

extend

out

of

the

front

panel.

d.

Disengage

the

rear

edge

of

the

pcb

by

sliding

it

toward

the

front.

Lift

up

at the

rear

edge

and

carefully

pull

the

pcb

out

of

the

base,

disengaging

the

line

cord

strain

relief

from

the

base.

e.

Install

the

replacement

pcb,

making

certain

that

the

shields

from

step

c.

are

properly

installed,

and

that

the

line

cord

strain

relief

is

indexed

properly

at

the

rear

of

the

base.

Refer

to

steps

d.,

c, b.,

and a.

as

required

for

reassembly.

6-3

00902

PCB

MOUNTING

SCREW

(1

OF

3)

PCB

LOGIC

BOARD

TRANSFORMER

T1

BODY

COVER

HEAT SHIELD

HIGH

VOLTAGE

(FUSE)

SHIELD

Figure

6-2.

LOGIC

BOARD

REPLACEMENT

6-4

6.4 LINE

FEED

SOLENOID

ASSEMBLY

(See

Figure

6-3)

To

replace

the

line

feed

solenoid

assembly,

removal

of

the

assemblies

is

required

as

follows:

a.

See

power

removal

WARNING

(paragraph

6.1).

Remove

the

cover

assemblies

as

detailed

in

paragraph

4.4.1.

b.

Remove

the

mechanism

assembly

per

paragraph

6.2.

c.

Remove

two

solenoid

mounting

screws

from

the

left

side

plate.

d.

Remove

the

solenoid

assembly

and

plastic

pawl

arm

by

lifting

up

on the

solenoid

to

disengage

the

pawl

from

the

line

feed

roller

ratchet.

e. If

required,

remove

the

pawl

arm

from

the

solenoid

clevis

by

removing

the

small

retaining

ring

and

pulling

the

clevis

pin

out.

Save

the

pawl

arm

and

hardware

for

the

replacement

solenoid

assembly.

f.

Before

installing

the

replacement

solenoid

assembly,

check

the

clearance

from

the

bottom

of

the

solenoid

bracket

to

the

rubber

O-ring

as

detailed

in

Section

5.

g.

Install

the

pawl

arm on

the

replacement

solenoid

and

mount

the

solenoid

assembly

on

the

left

side

plate,

passing

the

pawl

arm

through

the

nylon

guide

and

engaging

the

pawl

into

the

ratchet

on

the

roller.

h.

Check

the

solenoid

throw

tolerance

as

detailed

in

Section

5,

and

change

the

solenoid

position

as

required

for

reliable

line

feed

actuation.

i.

Install

the

mechanism

assembly

and

cover

assemblies.

Refer

to

steps

b.

and

a.

as

required.

6.5

CARRIAGE

RACK,

MOLDED

(See

Figure

6-4)

To

replace

the

carriage

rack,

removal

of

the

assemblies

and

lower

carriage

shaft

is

required

as

follows:

a. See

the

power

removal

WARNING

(paragraph

6.1).

Remove

the

cover

assemblies

as

detailed

in

paragraph

4.4.1.

b.

Remove

the

mechanism

assembly

per

paragraph

6.2.

c. On

the

left

side

plate,

remove

the

rack

tension

leaf

spring

mounting

screw

with

a

1/4-inch

nutdriver.

Remove

the

retaining

ring

from

the

end

of

the

lower

carriage

shaft

and

the

retaining

ring

inside

the

left

side

plate.

6-5

SOLENOID

MOUNTING

SCREW

(1

OF

2)

Figure

6-3.

LINE

FEED

SOLENOID REPLACEMENT

LEFTSIDE

PLATE

RETAINING

RINGS

(NOTE

ORIENTATION)

Figure

6-4.

CARRIAGE RACK

REPLACEMENT

6-6

d. On

the

right

side

plate,

remove

only

the

inside

retaining

ring

from

the

lower

carriage

shaft.

e. Carefully

slide

the

carriage

shaft

out

of

the

right

end

plate.

With

the

carriage

shaft

removed,

the

molded

rack

may

now

be

removed.

CAUTION

The

rack

is

not

symmetrical,

and

must

be

installed

so

that

the

teeth

are

pro-

vided

at

the

left

end

for

the

RTP

function.

The

end

with

more

teeth

is

also

identified

by

a molded

stud

on

the

end.

f.

Insert

the

replacement

rack,

observing

the

CAUTION

above.

Insert

the

carriage

shaft

and

orient

the

retaining

ring

on

the

right

end

so

that it

does

not

interfere

with

the

end

of the

rack.

Insert

all

retaining

rings

in

this

manner.

g.

Insert

the

rack

tension

leaf

spring

so

that

it

tightens

the

rack.

h.

Install

the

mechanism

assembly

and

cover

assemblies,

referring

to

steps

b.

and a.

as

required.

6.6

BASE

COVER

ASSEMBLY

(See

Figure

6-5)

To

replace

the

base

cover,

remove

the

assemblies

as

follows:

a. See

the

power

removal

WARNING

(paragraph

6.1).

Remove

the

cover

assemblies

per

paragraph

4.4.1.

b.

Remove

the

mechanism

assembly

per

paragraph

6.2.

c.

Remove

the

logic

pcb

per

paragraph

6.3.

d.

Remove

the

base

cover

cap

from

the

old

base

and

insert

it

into

the

front

panel

hole

at the

same

location

on

the

replacement

base

cover

assembly.

e.

Reinstall

all

assemblies

on

the

replacement

base

cover.

Refer

to

steps

c, b.

and

a.

as

required.

6.7 BODY

COVER

ASSEMBLY

(See

Figure

6-5)

To

replace

the

body

cover

assembly,

proceed

as

follows:

a.

See

the

power

removal

WARNING

(paragraph

6.1).

Remove

the

cover

assemblies

per

paragraph

4.4.1.

b.

Install

the

replacement

body

cover

assembly

consisting

of

the

body

cover,

soundproofing,

ribbon

drive

motor

assembly,

capstan

and

ribbon

tensioner.

c.

Install

a

new ribbon.

6-7

00901

BODY

COVER

MOUNTING

SCREEN

(1

OF

5)

PCB LOGIC

BOARD

BASE

COVER

CAP

TOP

COVER

ASSEMBLY

BODY

COVER

ASSEMBLY

MECHANISM

ASSEMBLY

BASE

COVER

ASSEMBLY

TRANSFORMER

HEAT

SHIELD

HIGH

VOLTAGE

SHIELD

Figure

6-5.

BASE AND BODY COVER

ASSEMBLY REPLACEMENT

6-8

6.8

HEAD-CARRIAGE

ASSEMBLY

(See

Figure

6-6)

Replacement

of the

head-carriage

assembly

requires

removal

of

the

assemblies

as

follows:

a.

See

power

removal

WARNING

(paragraph

6.1).

Remove

the

cover

assemblies

per

paragraph

4.4.1.

b.

Remove

the

mechanism

assembly

per

paragraph

6.2.

CAUTION

When

removing

the

carriage

shafts,

take

care

not

to

score

the

shafts,

as

this

could

result

in

rough

carriage

move-

ment

or

excessive

wear

of

the

carriage.

Also,

the

carriage

must

be

supported

and

handled

carefully

during

removal

and

replacement.

c.

Remove

the

two

outside

retaining

rings

from

the

carriage

shafts

at

the

right

side

plate.

Then,

remove

the

four

inside

retaining

rings

from

the

carriage

shafts.

d.

Remove

the

rack

tension

leaf

spring

from

the

left

side

plate

using

a

1/4-inch

nutdriver.

e.

Carefully

press

the

right

ends

of

the

carriage

shafts

through

the

side

plate,

and

move

them

out

through

the

left

side

plate.

f.

Remove

the

molded

rack

from

the

mechanism

assembly

and

set

the

defective

head-carriage

assembly

aside.

g.

Align

the

replacement

head-carriage

assembly

and

insert

the

nylon

rack

through

the

carriage

bushings,

then

index

the

ends

of

the

rack

into

the

slots

in

the

side

plates.

See

CAUTION

below.

CAUTION

The

rack

is

not

symmetrical,

and

must

be

installed

so

that

the

end

with

the

molded

stud

is

at

the

left

side

plate.

The

additional

rack

teeth

are

required

for

the

RTP

function.

h.

Install

the

carriage

shafts

and

rack

tensioner

leaf

spring,

referring

to

steps

e.,

d.,

and

c.

as

required.

See

NOTE

below.

NOTE

Before

installing

the

mechanism

assembly

on the

base,

perform

the

clearance

check/

adjustment

on

the

head-carriage

assembly

for

the

printhead

to

platen

gap

and

the

Hall

effect

sensor

(Column

Sense)

and

ro-

tating

magnet

gap.

l.

Install

the

mechanism

assembly

and

cover

assemblies,

referring

to

steps

b.

and

a.

as

required.

6-9

00905

Figure

6-6. HEAD-CARRIAGE ASSEMBLY

REPLACEMENT

6.9 PLATEN ASSEMBLY (See Figure

6-7)

Replacement of the head-carriage assembly

requires removal of the

assemblies as follows:

a. See power

removal WARNING

(paragraph

6-1).

Remove the

cover

assemblies per

paragraph

4.4.1.

b. Remove the mechanism assembly

per paragraph 6.2.

c.

Remove one mounting screw from the side

plate at each end of the

platen using a 1/4-inch nutdriver.

d. Remove the

defective platen assembly

by lifting upward

at each

end.

e.

Install the prealigned replacement platen assembly

by inserting

it firmly into the index slot at each side

plate. Insert

and

tighten

the mounting screws.

f

Check the printhead to platen

gap

and

adjust

if

required per

Section 5.

6-10

g.

Install

the

mechanism

assembly

and

cover

assemblies,

referring

to

steps b.

and a. as

required.

Figure 6-7.

PLATEN

ASSEMBLY

REPLACEMENT

6-11

SECTION

7

SUPPORTING

ILLUSTRATIONS

This

section

contains

schematic

diagrams

of

the

two

printed

circuit

boards

in

the

Line

Printer

II.

The

schematics

of

the

two

boards

are

as

follows

^2H££

Title

Drawing

No.

7-1

Schematic

Diagram,

P.C.B.

Logic

Bd.

63669422-9001

7-2

Schematic

Diagram,

P.C.B.

Flyback

Protect

Bd.

63669416-9001

7-1

R

>

M

asl

8-1

3-8

j

J

<

-

i ! -

,

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y fr,

s

£ ^^ *

L

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S

5

a

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^*

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cf o" d d

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al al

ml.

*

II

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U--A?

'

" „'

~s] al 51

a]

«| »|

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Q*

3£%g

'^Sfe"

182

1

;KK

I$*

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J^

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s

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ts-

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«

H

s

8R8

s s II

**

a

»

»

*

ffl

0.

3

M

Q

CJ

M

Eh

u

CQ

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U
3

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§S|

7-2

O

(M

[

5!

I

H H

-1

t\

i-[

n\

f

1

g

|

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-

id

a a

o

1 1

(V

t-

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5

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i-i

3

o>

•H

fa

7-3

SECTION

8

ILLUSTRATED

PARTS

BREAKDOWN

8.1

INTRODUCTION

This

section

contains

the

mechanical

parts

breakdown,

electrical

parts

breakdown

and numerical

index

list

for

the

Line

Printer

II.

The

section

is

organized

as

follows:

8.3

Mechanical

Parts

Breakdown

8.4

Electrical

Parts

Breakdown

8.5

Numerical

Index

List

8.2

ABBREVIATIONS

The

following

abbreviations

are

used

in the

mechanical

and

electrical

parts

breakdowns.

A/R

As

Required

Assy.

Assembly

Cer.

Ceramic

Dia.

Diameter

Elctlt.

Electrolytic

Hex.

Hexagon

Hd.

Head

i.e.

Integrated

Circuit

in.

inch

Lg.

Long

mm

millimeter

P.C.B.

Printed

Circuit

Board

Rdl.

Radial

Soc.

Socket

TBAX

Tubular

Axial

XSTR

Transistor

8-1

Figure

8-1.

LINE PRINTER

II

8-2

o

03

a

U.Q

\

\

o<

1

V

Zct

LU|_

CCt/i
LLlZ)

LU^S.

==\

CD

O

\

>>

~)

CJCQ

CM

CJ

-s

CO

v

u_

Qw

\

Ooo

\

CO

<

CD

N

*J

cr>

X
D

U

LL

BODY

COVER

ASSEMBLY

63669372

5001

en

CC

LL

PAPER

GUIDE,

TOP

63669324

2001

en

D

u_

TOP

COVER

63669241

2201

en

LT

O

LL.

en

LOGO

LINE

PRINTER

II

TRS

63669336

3001

8-3

8.3

MECHANICAL

PARTS

BREAKDOWN

The

mechanical

parts

breakdown

is

illustrated

in Figures

8-1

through

8-8.

The

breakdown

contains

illustrations

and

lists of

materials

exploding

all

assemblies

and

subassemblies

down to a

piece part

level. The

four columns

of

the

lists of

materials

are

described

below.

8.3.1

FIGURE

AND

ITEM

NUMBER

The

first

two

numbers

in

the column

are

the figure numbers

and

appear

at

the

beginning

of

each list

of

material. The

third

number

is

the

part item

number and

appears

on the

illustration.

Numbers

prefixed

with an

A

(i.e.,

A1, A2, etc.)

present

attaching

hardware.

Item numbers are

used to

assist in

locating

a part

in the list

of materials when a

part is

visually

identified

or

a

part number

has been located

in the numerical

index

list.

8.3.2

PART

NUMBER

This column contains

the manufacturer's part

number.

Part numbers

are used

exclusively

to

identify

parts. The last

four

digits of the part

number

designate the

type

of part as

follows:

DASH

NUMBER

TYPE

OF PART

-1XXX

Electrical

Piece Part

-2XXX

Mechanical

Piece

Part

-3XXX

Label,

Nameplate, Etc

-4XXX

Electrical

Assembly

-5XXX Mechanical

Assembly

-6XXX

Kit

-9XXX

Reference

Material

8.3.3

DESCRIPTION

This

column

provides

a

brief

description

of

the indexed part.

8.3.4

QUANTITY

This

column

indicates the

number of piece

parts used in

the specific

assembly

or subassembly.

8-4

(This

page

intentionally

blank)

8-5

H

CO

o

u

Q

s

I

00

<u

u

D

8-6

ITEM

PART

NUMBER

8-2-1

63669209-2001

-2

63669280-2001

-3

63669208-2001

-4

63669210-2001

-5

36700028-2002

-6

63669242-5201

-7

63669450-5001

-7.1

63669441-2001

-7.2

63669439-2001

-7.3

63669437-2001

-7.4

63669448-2001

LIST

OF MATERIALS

BODY

COVER

ASSEMBLY

(Figure 8-2)

DESCRIPTION

Ribbon

Stripper,

Drive

Ribbon

Roller,

Driver

Ribbon

Roller,

Driver

Pivot,

Ribbon

Stripper

Spring

Body

Cover

Assembly,

Ribbon

Tensioner

NOTE:

The

ribbon

tensioner

assembly

is

made up

of

items

7.1

through

7.4

which

are

not

called

out on

Figure

8-2.

Bracket,

Ribbon

Tensioner

Tensioner,

Ribbon

Hinge

Pin,

Ribbon

Tensioner

Spring,

Ribbon

Tensioner

-8

63669271-4001

Assembly,

Ribbon

Drive Motor,

60 Hz

NOTE:

The

ribbon

drive

motor

assembly

is

made

up of

items

8.1

through

8.3

which

are

not

called

out

on

Figure

8-2.

QTY.

8.1

30420015-1001

-8.2

31240036-1001

-8.3

31343026-1003

-9

63669320-2001

-10

63669306-2001

-11

63701468-6003

-12

63669319-2001

Motor,

Ribbon

Drive

Contact,

Connector

Crimp,

24-18

AWG

Housing,

Receptacle,

3

position,

0.045P

Bearing,

Thrust

Spring,

Ribbon

Roller

Kit,

Zip-Pack,

12

Ribbons

Button,

Ribbon

8-2-A1

-A2

-A3

-A4

33115555-2009

33115555-2013

34517087-2001

34000455-2003

-

ATTACHING

HARDWARE

-

Retaining

Ring,

Ext.,

0.185

Shaft

Retaining

Ring,

Ext.,

0.250

Shaft

Screw,

Pan Hd.

Phillips,

#4-40

x .25

in.

Lg

Washer,

Split

Lock,

M2.5

1

1

2

2

8-7

Eh

W
W

S3

W

CO
to

S

to

U

n

I

CO

0)

u

3

8-8

LIST

OF

MATERIALS

MECHANISM

ASSEMBLY

(Figure

8-3,

Sheet

1)

ITEM

PART

NUMBER

8-3-1

63669276-5001

-2

63680170-5001

-2.1

63680169-2001

-2.2

63680168-2001

-2.3

34000205-2003

DESCRIPTION

Assembly,

Slide

Plate,

Left

Assembly,

Hex

Platen,

Pinned

NOTE:

The

pinned

hex

platen

assembly

is

made

up of

items

2.1

through

2.3

which

are

not

called

on

on

Figure

8-3,

Sheet

1.

Platen,

Hex,

Pinned

Stripper,

Paper,

Pinned

Screw,

Round

Head,

#2 x

.25

in.

Lg.

-3

63680115-5001

Assembly,

Pin

Feed

Rollers

-3.1

63669288-2001

-3.2

36350009-2001

-3.3

33150000-2009

-3.4

63680117-2001

-4

63669256-5001

-5

63669305-2001

-6

34000190-2017

-7

63669240-2001

-8

63669142-2001

-9

63669278-5001

NOTE:

The

pin

feed

roller

assembly

is

made

up

items

3.1

through

3.4

which

are

not

called

out

on

Figure

8-3,

Sheet

1

Paper

Roller

O-Ring,

0.921

I.D.

Dowell Pin,

0.062

Dia.

Roller

Tractor

Drive

x

0.250

in.

Lg,

Assembly,

Side

Plate,

Right

Spacer,

Paper

Roller

Drive

Washer,

Spring,

#1/4 x 0.49

O.D.

Rack,

Carriage,

Molded

Shaft,

Carriage

Assembly,

Head/Carriage

QTY.

1

1

1

6
6

2

8-3-A1

-A2

-A3

-A4

-A5

33115133-2024

34527167-2001

34828007-2001
34922107-2001

33115131-2012

-

ATTACHING

HARDWARE

-

Retaining

Ring,

Ext.,

0.375

Shaft

Screw,

Pan

Hd.

Phillips,

#6-32

x

.50

in.

Washer,

Split

Lock,

#6

Washer,

Flat

#6

Retaining

Ring,

Ext.

Bow,

0.375

Shaft

Lg,

2

2

2

2

2

8-9

H
W

S5
co

i-3

CO
CO

CO

33

CJ

CO

I

00

D

C7>

8-10

LIST

OF

MATERIALS

MECHANISM

ASSEMBLY

(Figure 8-3,

Sheet

2)

ITEM

PART

NUMBER

8-3-1

63669142-2001

-2

63669255-2001

-3

63669259-2001

-4

63669260-2001

-5

36700033-2001

-6

63669379-2001

-7

63669196-2001

-8

63669197-2001

-9

63669303-2001

-10

63669258-2001

-11

63669304-2001

-12

63669202-2001

-13

63669254-5001

•13.1

63669167-2001

13.2

63669322-2001

13.3

63669235-2001

•14

63669385-2001

15

63669304-2002

DESCRIPTION

Shaft,

Carriage,

Upper

Full Pan,

Paper

Feed

Release

Lever

Shaft,

Release

Lever

Spring,

Ext.

0.18

Dia.

x

0.62

in.

Lg.

Spring,

Blocker

Roller,

Detent

Bracket,

Detent

Spring,

Detent

Cam,

Release

Arm

Disengagement,

Right

Shaft,

Yoke

Pivot

Assembly,

Paper

Pinch

Rollers

NOTE:

The

paper

pinch

rollers

assembly

is

made up

items

13.1

through

13.3.

Roller

Shaft,

Roller

Yoke

Blocker,

Line

Feed

Arm

Disengagement,

Left

OTY.

12

6

3

1

1

-

ATTACHING

HARDWARE

-

8-3-A1

-A2

-A3

33115133-2024

33115131-2020

33115133-2020

Retaining

Ring

Ext.

0.375

Shaft

Retaining

Ring

Ext.

Bow

0.375

Shaft

Retaining

Ring

Ext.

0.188

Shaft

8-11

A3

}

2

A9

A8

<

\

A1

A2

A3

13

Figure

8-4.

PRINT

HEAD/CARRIAGE ASSEMBLY

8-12

LIST OF

MATERIALS

PRINT

HEAD/CARRIAGE

ASSEMBLY

(Figure 8-4)

ITEM PART

NUMBER

8-4-1

62001100-5005

-2

63669279-2001

-3

63669262-2001

-4

63669311-2004

-5

63669321-2001

-6

63669315-2001

-7

63669330-2001

-8

63669555-5001

-9

211010001-1001

-10

63669264-4001

10.1

30420014-1001

-10.2

63669263-2001

11

63669327-2001

-12

63669185-2001

•13

63669267-5001

DESCRIPTION

FF

Head

Assembly,

7 Wire

Flex

Circuit

Head

Adaptor

Cam,

Head

Gap

Adjustment

Shaft,

Ribbon

Roller

Pin

Ribbon

Roller

Ribbon

Roller,

Head

Adaptor

Adapter,

Flex

Circuit

Assembly,

Carriage

and

Shafts

Capacitor,

Ceramic

Disc,

100 pf,

1KV,

20%

Assembly,

Motor

Drive

NOTE:

The

motor

drive

assembly

is

made

up

items

10.1

and

10.2

which

are

not

called

out

on

Figure

8-4.

Motor,

Carriage

Drive

Pinion,

Motor

Holder

Sensor

Gear

Cluster,

16/60

Assembly,

Rotor

QTY.

1

1

1

2

2
2

1

1

1

1

13.1

63669266-2001

-13.2

63669295-2001

14

63669186-2001

15

63669338-4001

16 63669316-2001

NOTE:

The

rotor

assembly

is

made

up of

items

13.1 and

13.2

which

are

not

called

out

on

Figure

8-4.

Gear

,

Rotor

Magnetic

Rotor,

Large

Hex

Gear

Cluster,

16/56

Assembly,

Ribbon

Cable

7 Wire

Hd.

Bushing,

Eccentric

Carriage

-

ATTACHING

HARDWARE

-

8-4-A1

34004407-2001

-A2

34912087-2001

-A3

33115100-2002

-A4

34136237-2001

-A5

34838007-2001

-A6

34933126-2001

-A7

34000452-2003

-A8

34000455-2003

-A9

34000352-2022

-A10

33115555-2009

-A11

33922061-2001

Screw,

Cruciform

Head,

.50

in. Lg.

Washer,

Flat,

#4

Retaining

Ring,

Ext.

0.125

in. Shaft

Screw,

Cap, Hex

hd. #8-32

x .72

in.

Lg.

Washer,

Split

Lock,

#8

Washer,

Flat,

#8

Washer,

Flat,

M2

Washer,

Split

Lock, M2.5

Screw,

Fillister

Head

Slotted,

M2

x 8

mm Lg.

Retaining

Ring,

Ext.,

0.185

Shaft

Set-Screw,

Cup

Point,

#6-32

x .187

in.

Lg.

2
2

5
2

2
2

2

2
2

1

1

8-13

en

to

s

w

w

Q

M

w

EH

SB

O

M

03

I

CO

v

14

3

8-14

LIST OF MATERIALS

LEFT/RIGHT

SIDE

PLATE

ASSEMBLIES

(Figure 8-5)

ITEM PART

NUMBER

8-5-1

63669205-2001

-2

63669187-2001

-3

63669342-2001

-4

63669312-5002

-4.1

-4.2

-5

-6

-7

-8

-9

-9.1

-9.2

-9.3

-9.4

-9.5

-9.6

-10

63669427-2001
63669313-2001

36000045-2001

63669190-2001
63669183-2001

63669236-2001
63669287-4001

30458629-1001
34000079-2001

39648505-0007-

31240036-1001

31343026-1002

36350010-2001

63669557-2001

DESCRIPTION

Clip, Spring

Side

Plate, Left

Bumper

Pad

Assembly,

Hinge

Pin

NOTE:

The

hinge

pin assembly

is

made

up

of items

4.1

and 4.2 which

are

not

called

out in

Figure

8-5.

Hinge

Pin

Washer,

Hinge

Pin

Bushing,

Nylon,

0.252

I.D.

Ratchet

Pawl

Side

Plate, Right

Pawl

Guide,

Molded

Assembly,

Solenoid

NOTE:

The

solenoid

assembly

is

made

up of items

9.1

through

9.6

which

are not

called out in

Figure

8-5.

Switch,

Solenoid,

Size F

Nut, Hex,

Nylon, #5-40

Wire,

Type B, 20

AWG,

White

Contact,

Connector

Crimp,

24-18

AWG

Housing,

Receptacle,

2

Position

O-Ring,

0.114

I.D.

Clevis Pin,

Solenoid

QTY.

1

1

2
2

-

ATTACHING

HARDWARE

-

8-5-A1

-A2

-A3

-A4

34000202-2001

34000451-2056

34000105-2001

33115116-2009

Screw,

Hex Hd., #8-32

x

.25 in.

Lg.

Washer, Split

Lock,

Ext.

Tooth, M4

Screw, Self

Threading,

#6-32

Retaining Ring,

Ext.

0.091

Shaft

8-15

5h

W

CO

a

pa

o

u

w

I

CO

9)

u

3

U>

•H

fa

8-16

LIST OF

MATERIALS

BASE

COVER ASSEMBLY

(Figure 8-6)

ITEM PART NUMBER

DESCRIPTION

8-6-1

63669243-5070

Base

Cover

-2

-

P.C.B., Logic

Board Assembly

-3

63669348-2002

Shield, High

Voltage

-4

63669395-2001

Foam, P.C. Board

-5

63669480-2001

Shield,

Transformer

-6

36350051-2001

Bumper,

0.12 in. x

0.50 in.

-7

63669349-3001

Label, Power

-8

63669412-2001

Heat

Shield,

Transformer

-9

63669326-2001

Cap, Base

Cover

-10

63669350-3001

Label, Reset

QTY.

-

ATTACHING

HARDWARE

-

8-6-A1

-A2

-A3

34922105-2001

34825007-2001
34527167-2001

Washer, Flat

#6

Washer, Split

Lock,

Int. Tooth

#6

Screw, Pan Hd.

Phillips,

#6-32

x

.50 in. Lg.

8-17

*

J

CO

o

as

Si

I

00

«

3

•H

fa

8-18

ITEM

PART

NUMBER

8-7-1

63669294-2001

-2

63669292-2001

-3

63669293-2001

-4

63669290-2001

-5

81700332-2001

-6

63669291-2001

LIST

OF MATERIALS

PAPER ROLL HOLDER

ASSEMBLY

(Figure 8-7)

DESCRIPTION

QTY.

Spring,

Dancer

2

Axle, Roll

Paper

i

Hub, Roll

Paper

2

Holder,

Roll

Paper

1

Paper Guide

2

Dancer Bar

1

-

ATTACHING

HARDWARE

-

8-7-A1

33490001-2001

Eyelet,

Flange

8-19

o

M

EH

CO

D

8

<

Eh

M

00

I

00

<u

u

a

en

•H

I*

8-20

LIST

OF

MATERIALS

KIT, MAIN ACOUSTIC

(Figure

8-8)

ITEM PART

NUMBER

DESCRIPTION

-8-1

63669382-2001

Foam,

Top Cover,

Front

-2

63669383-2001

Foam,

Top

Cover, Middle

-3

63669384-2001

Foam, Top

Cover, Rear

-4

63669380-2002

Foam,

Body Cover,

Right,

Front

Cover

-5

63669388-2001

Foam,

Body

Cover, Side

Corner

-6

63669391-2001

Foam, Body

Cover, Side

-7

63680138-2001

Foam,

Body Cover,

Rear

Corner

-8

63680140-2001

Foam, Body

Cover, Rear

Corner, Pulley

Side

-9

63680141-2001

Foam, Body

Cover,

Front

Cover

-10

63669389-2001

Foam, Body

Cover,

Front

Middle

-11

63669390-2001

Foam, Body

Cover,

Left, Front

Corner

-12

63680137-2001

Foam, Body

Cover,

Pulley

Side

-13

63669392-2001

Foam,

Body

Cover,

Front

-14

63669393-2001

Foam, Body

Cover,

Top

-15

63680139-2001

Foam, Body

Cover, Middle

-16

63669400-2001

Foam, Base,

Left, Front

Corner

-17

63669401-2001

Foam,

Base, Left,

Front,

Middle

-18

63669402-2001

Foam, Base,

Right,

Front,

Middle

-19

63669403-2001

Foam, Base,

Right,

Front

Corner

-20

63669406-2001

Foam, Base,

Left,

Rear

Corner

-21

63669407-2001

Foam,

Base,

Left, Rear

-22

63669407-2002

Foam,

Base, Right,

Rear

-23

63669408-2001

Foam, Base,

Right,

Rear

Corner

QTY.

8-21

8.4 ELECTRICAL

PARTS

BREAKDOWN

The

electrical parts breakdown is shown in Figure

8-9.

This

breakdown

contains

an illustration and list

of material

for the

printed circuit

board

used in the

printer. The four columns of the

electrical parts

breakdown is

identical to the

mechanical parts breakdown.

Those

items not

called out by

item

numbers

are identified

by a reference designator.

The

following abbrevi-

ations

are used

as reference designators.

REFERENCE

DESIGNATC

)R TYPE

OF PART

C Capacitor

CR Diode

F

Fuse

J Connector

(jack)

ME

Integrated

Circuit

P

Connector

(plug)

R

Resistor

S1

Sensor Assembly

SW Switch

VR

Voltage

Regulator

Y1 Oscillator

8-22

(This

page is

intentionally

blank)

8-23

I

00

Q)

u
D

•H

8-24

LIST

OF

MATERIALS

LOGIC

P.C.B.

ASSEMBLY

(Figure

8-9)

ITEM

PART

NUMBER

1

63669022-2001

2

38045400-1900

3

38052370-1900

4

38100904-1900

5

63669380-6001

6

22108006-1001

7

21102002-1001

8

21104005-1001

9

22105002-1001

10

22106003-1001

11

38263880-1900

12

38239060-1900

13

38239040-1900

14

38201200-1900

15

38201252-1900

16

38245062-1900

17

35205550-1900

18

35674273-1900

19

35474070-1900

20

35474740-1900

21

35474040-1900

22

41271926-1001

23

46101502-1001

24

41222925-1001

25

41000926-1001

26

39090010-1001

27

31350003-2001

28

31410247-2003

29

31301029-1003

30

31301029-1002

32

32860005-2001

33

32860005-2002

38

38100211-1001

40

34000453-2003

41

34000454-2003

42

34000651-2003

43

34000359-2087

44

37810690-1001

45

38040020-1900

46

62000111-3001

47

22106002-1001

48

63669503-4003

48A

63669503-4002

49

31410762-1040

50

31410762-1024

51

35207800-1900

52

35207812-1900

53

41102926-1001

54

41472926-1001

55

32860010-2001

56

41122925-1001

57

30410011-1009

DESCRIPTION

PCB

AW,

730

Logics

w/Condensed

Semicond

Diode

Rect

IN5400

BT

Semicond

Diode

TBAX

8.2

IN5237BT

Semicond

Diode

TBAX

IN4148

BT

Kit,

Capacitor

Metric

Thread

U

Cap

Elect

1000

MF

25V

-10

+50%

Cap TBAX

Glass

or

Epoxy

1000PF

Cap TBAX

.1UF

50V

-20

+80%

Cap

ELCTLT

1UF

25V

-10

+75%

Cap

ELCTLT

10MF

16V

-10

+75%

Semicond

XSTR

NPN

Pwr

2N6388BT

Semicond

XSTR

PNP

GP

2N3906

BT

Semicond

XSTR

GP

2N3904

BT

Semicond

XSTR

NPN

Pwr

TIP120BT

Semicond

XSTR

PNP

Pwr

EP3011BT

Semicond

XSTR

2N5062BT

IC

Linear

Timer

555BT

IC

Octal

D-Type

FF

74LS273BT

IC

Hex

Buffer/Driver

7407BT

IC

Dual

D-Type

FF

7474BT

IC

Hex

Inverter

740 4BT

Res

Carbon

270

Ohm

1/4W

10%

Pot

Single

Turn

IK

Res

Carbon

2.2K Ohm

1/4W

5%

Res

Carbon

Ohm

1/4W

10%

Sw

PC

RT

Angle

Mount

SPDT

Clip

Fuse

w/Ear

PC

Mtg

.25

Dia

Socket

IC

16 Pin

Sldr

Dip

.300W

Header

3

Posn

Lkg

PC

Mtg

.045P

Header

2

Posn

Lkg

PC

Mtg

.045P

Heat

Sink

to-220

Base

Heat

Sink

to-220

Top

Semicond

Led

w/Leads

Wshr

Fl

M2.5x6.5

0.5

Thk

SST

SI

Wshr

Lock

Split

M2.5

SST

Nut

Hex

M2.

5x0.45x2

Thk

SST

SI

SCR

CHZ

Sltd

M2.

5x0.

45x10

SST

Crystal

6 Mz

Semicond

Diode

TBAX

IN4002

BT

Warning

Decal

Fuse

Rating

Cap

ELCTLT

10UF

25V +10

+75%

I/C

Assembly

8039

I/C

Assembly

8049

Skt

IC

40 Pin

Sldr

Dip

.600W

TP

Skt

IC

24 Pin

Sldr

Dip

.600W TP

IC

Voltage

Regulator

7805

BT

IC

Voltage

Rgltr

+12V

7812

BT

Res

Carbon

1K

Ohm

1/4W

10%

Res

Carbon

4.7K

Ohm

1/4W

10%

Heat

Sink

1.1

8H

x

LOW

PC

Vert

Res

Carbon

1.2K Ohm

1/4W 5%

Inductor

4.7UH

Hvy

Dty

QTY.

1.0000

4.0000

1.0000

5.0000

1.0000

1.0000

1.0000

12.0000

1.0000

3.0000

8.0000

4.0000

2.0000

1.0000

1.0000

2.0000

1.0000

1.0000

2.0000

2.0000

3.0000

2.0000

1.0000

3.0000

1.0000

2.0000

2.0000

1.0000

1.0000

1.0000

2.0000

2.0000

1.0000

6.0000

4.0000

4.0000

4.0000

1.0000

6.0000

1.0000

1.0000

1.0000

A/R

2.0000

1.0000

2.0000

i.oooo

19.0000

4.0000

2.0000

1.0000

1.0000

8-25

LIST

OF

MATERIALS

LOGIC

P.C.B.

ASSEMBLY

(Figure

8-9)

(cont'd)

ITEM

PART

NUMBER

58

32860009-2001

61

35674174-1900

62

41103926-1001

63

41155926-1001

64

22205000-1001

65

35474320-1900

67

35202316-1007

68

35578156-1001

69

41821926-1001

70

41152926-1001

71

41201926-1001

72

63669438-5001

76

41151926-1001

77

39092508-1001

78

21103007-1001

79

21120000-1001

80

33490001-2014

81

39695333-2002

82

39660041-1001

83

30468359-1001

84

39030000-1001

85 63669421-4000

86

63669515-4001

DESCRIPTION

Heat Sink

Xistor to-220

IC

Hex

D Type

FF 74LS174 BT

Res

Carbon

10K Ohm 1/4W 10%

Res Carbon

1.5M

Ohm

1/4W 10%

Cap

ELCTLT 2UF 25V

+10 +75%

IC

QUADR

or

2-Input 7432BT

IC

ROM

Code

2316 P730C0. 015

IC 2048-B Rndm

Access Mem 8156

Res

Carbon 820 Ohm 1/4W 10%

Res Carbon 1.5K

Ohm

1/4W

10%

Res Carbon

200 Ohm 1/4W 10%

Assy,

RTP Switch

Res Carbon 150 Ohm

1/4W 10%

Switch Block

4 Posn PC Mtg

Cap

Cer

Disc .01UF 50V 20%

Cap

Cer

Disc 12PF 500V 20%

Eyelet Flange

.183D x .156L

BRS 4B

Strap

Cable

Adj Lkg 1.12BDL

Cord

3/C 18 AWG w/Pl 73 IN.

Xfmr 117V /25.2V

CT

Fuse GL

.25

Dia 1A Slow

1.25L

PCB A, 730 Lgc,

w/Cond

PRL, Basic

PCB A

730 Flyback Protect Bd

OTY.

1.0000

1.0000

15.0000

1.0000

1.0000

1.0000

A/R

1.0000

8.0000

1.0000

1.0000

1.0000

1.0000

1.0000

1.0000

1.0000

2.0000

1.0000

1.0000

1.0000

1.0000

1.0000

1.0000

REFERENCE DESIGNATORS

P.C.B.

LOGIC BOARD

ASSEMBLY

(Figure

8-9)

ITEM

REFERENCE DESIGNATOR

2 CR1,

CR2, CR3, CR4

3 CR10
4 CR9,

CR14, CR15, CR16,

CR17

5 C1
6 C2

7

C13

8 C5,

C6, C8, C9,

C15, C16,

C18, C19, C20, C21,

C22, C17

9 C12

10 C4, C7, C10

11

Q9,

Q10, Q11,

Q12, Q13,

Q14, Q15,

Q16

12

Q3, Q5, Q6,

Q8

13

Q4,

Q7

14

Q18

15

Q17

16

Q2,

Q1

17

ME6

18

ME8

19 ME12, ME14

20

ME4, ME5

21 ME1,

ME2, ME9

8-26

REFERENCE

DESIGNATORS

P.C.B.

LOGIC BOARD

ASSEMBLY

(Figure 8-9)

(cont'd)

ITEM

REFERENCE

DESIGNATOR

22

R38, R62

23 R61

24 R45, R49,

R53

25

R59

26 SW1, SW2
28

J001

29

J002

30

J003

38

DS1

44 Y1
45

CR12,

CR13; CR5,

CR6,

CR7, CR8

-.

47

C3

48

ME13

51

VR1,

VR3

52

VR2

53

RIO,

R11,

R12, R18,

R19, R20,

R22,

R23,

R33,

R40,

R41,

R42,

R46,

R48, R51,

R55, R57,

R58,

R43

54

R44,

R47,

R50, R56

56

R52

57

L1

61

ME11

62

R1,

R2,

R3, R4,

R5,

R6, R7,

R8, R9,

R14,

R15,

R17,

R39,

R63,

R16

63

R21

64

C11

65

ME10

67

ME7

68

ME3

69

R29, R30,

R31,

R32, R34,

R35,

R36,

R37

70

R54

71

R65

76

R64

77

SW3

78

C23

79

C24

100

J004

8-27

8.5 NUMERICAL INDEX

LIST

The numerical index list contains all

mechanical

and

electrical parts

cross-referenced with a figure and item

number.

The numerical

index

contains

the four columns

described below.

8.5.1 PART

NUMBER

This

column contains the numerical

listing of all

mechanical

and

electrical parts

used in

the printer.

8.5.2 DESCRIPTION

This column provides

a brief description

of the

indexed

part.

8.5.3

FIGURE AND

ITEM

NUMBER

This

column

contains the

corresponding

figure and

item numbers

for

all

parts listed

enabling

the

user

to identify

a known

part

on

an

illustration.

8.5.4

QUANTITY

This

column

contains

the quantity

of the

part required

on the

figure

and

item

number called out.

8-28

PART

NUMBER

DESCRIPTION

FIGURE

NUMBER

INDEX

NUMBER

QTY.

21101001-
21102002-
21103007-
21104005-
21120000-
22105002-

22106002-

22106003-
22108006-

22205000-
30410011-
30420014-

30420015-

30458629-
30468359-

31240036-

31240036-
31301029-

31301029-
31343026-

31343026-

31350003-
31410247-

31410762-
31410762-
32860005-

32860005-
32860009-

32860010-

33115100-
33115116-
33115131-
33115131-

33115133-
33115133-

33115133-

33115555-

33115555-

33115555-
33150000-

33490001-
33490001-
33922061-
34000079-
34000105-

34000190-

100

-100

100
100

100

100

100
100
100

100

1009

•100

100

•100

100

•100

100

•1002

•1003

•1003

•1002

•2001

2003

1024

•1040

2001

•2002

2001

2001

2002

2009

2012

2020

2020
2024
2024

2009

2009
2013
2009
2009
2014

2001
2001

2001

2017

Capacitor,

Ceramic

Disc,

100

pf,

1K,

20%

Cap TBAX

Glass

or Epoxy

1000

pf

Capacitor,

Ceramic

Disc

0.01

uf,

50V,

20%

Capacitor,

TBAX,

0.1

uf

50V,

-20

+80%

Capacitor,

Ceramic

Disc,

12 pf,

500V,

20%

Capacitor,

ELCTLT,

1

uf

25V,

-10

+75%

Capacitor,

ELCTLT,

10 uf,

25V,

-10

+75%

Capacitor,

ELCTLT,

10 mf,

16V,

-10

+75%

Cap,

Elect,

1000

mf,

25V,

-10

+50%

Capacitor,

ELCTLT,

2

uf,

25V,

-10

+75%

Inductor

4.7

UH

Hvy Dty

Motor,

Carriage

Drive

Motor,

Ribbon

Drive

Switch,

Solenoid,

Size F

Xfmr,

117V/25.2V

CT

Contact,

Connector

Crimp 24-18

AWG

Contact,

Connector

Crimp

24-18

AWG

Header,

2 Posn,

PC

Mtg

Header,

3 Posn,

PC

Mtg

Housing,

Receptacle,

3 Position

0.045P

Housing,

Receptacle,

2

Position

Clip

Fuse

w/Ear,

PC Mtg

0.25

Dia.

Socket

I.C.

16

Pin

Skt.,

IC

24

Pin

Skt.,

I.C, 40

Pin

Heat

Sink

to-220

Base

Heat

Sink

to-220

Top

Heat

Sink

Xistor

to-220

Heat

Sink

Retaining

Ring,

Ext.

Ext.

0.125

Shaft

0.091

Shaft

Bow

0.375

Shaft

Ext.

Bow

0.375

Shaft

Ext.

0.188

Shaft

0.375

Shaft

0.375 Shaft

185

Shaft

185 Shaft

250

Shaft

0.250

in.

Lg.

Retaining

Ring,

Retaining

Ring,

Ext

Retaining

Ring,

Retaining

Ring,

Retaining

Ring,

Retaining

Ring,

Retaining

Ring,

Retaining

Ring,

Retaining

Ring,

Dowel Pin,

0.062

Dia

Eyelet,

Flange

Eyelet,

Flange

Set-Screw,

Cup

Point,

#6-32

x

.187 in.

Lg.

Nut,

Hex,

Nylon #5-40

Screw,

Self

Threading

#6-32

Washer,

Spring

#1/4

x 0.49

O.D.

Ext
Ext
Ext
Ext

Ext

8-4

9

1

8-9

7

1

8-9

78

1

8-9

8

12

8-9

79

1

8-9

9

1

8-9

47

1

8-9

10

3

8-9

6

1

8-9

64

1

8-9

57

1

8-4

10.1

1

8-2

8.1

1

8-5

9.1

1

8-9

83

1

8-2

8.2

2

8-5

9.4

2

8-9

30

1

8-9

29

1

8-2

8.3

1

8-5

9.5

1

8-9

27

2

8-9

28

1

8-9

50 1

8-9

49

2

8-9

32

2

8-9

33

2

8-9

58

1

8-9

55

2

8-4

A3

5

8-5

A4

1

8-3/1

A5

2

8-3/2

A2

2

8-3/2

A3

2

8-3/1

A1

2

8-3/2

A1

2

8-2

A1

1

8-4

A10

1

8-2

A2

1

8-3/1

3.3

6

8-7

A1

4

8-9

80

2

8-4

A11

1

8-5

9.2

1

8-5

A3

1

8-3/1

6

1

8-29

PART NUMBER DESCRIPTION

FIGURE

NUMBER

INDEX

NUMBER

OTY.

34000202-2001

Screw,

Hex Hd. #8-32

x

.25 in. Lg.

34000205-2003

Screw, Round

Head,

#2 x

.25 in.

Lg.

34000352-2022

Screw, Fillister Hd.

Slotted M2

x 8 mm

Lg.

34000359-2087

Screw,

Fillister Head, Slotted

M2.5x10

mm Lg.

34000451-2056

Washer,

Split Lock, Ext.

Tooth M4

34000452-2003

Washer, Flat, M2

34000453-2003

Washer

,

Flat

, M2

.

34000454-2003

Washer, Split

Lock,

M2.5

34000455-2003

Washer, Split

Lock, M2.

34000455-2003

Washer, Split

Lock, M2.5

34000651-2003

Nut, Hex,

M2.5

34004407-2001

Screw,

Cruciform Head .50 in.

Lg.

34136237-2002

Screw,

Cap, Hex Head,

#8-32

x .72 in.

Lg.

34517087-2001

Screw, Pan Hd. Phillips

4-40

x .25 in.

Lg.

34527167-2001

Screw, Pan Hd. Phillips #6-32

x

.50 in. Lg.

34527167-2001

Screw, Pan Hd.

Phillips

#6-32

x .50 in.

Lg.

34825007-2001

Washer,

Split Lock,

Int.

Tooth,

#6

34828007-2001

Washer, Split Lock,

#6

34838007-2001

Washer,

Split Lock,

#8

34912087-2001

Washer, Flat,

#4

34922105-2001

Washer, Flat,

#6

34922107-2001

Washer,

Flat,

#6

34933126-2001

Washer, Flat,

#8

35202316-1007

IC ROM

2316

35205550-1900

I.C., Linear

Timer 555

35207800-1900

I.C.,

Voltage Regulator 7805

35207812-1900

I.C.,

Voltage Regulator

+12V 7812

35474040-1900

I.C., Hex Inverter

7404

35474070-1900

I.C., Hex

Buffer/Driver 7407

35474320-1900

I.C., Quadr OR

2-Input 7432

35474740-1900

I.C.,

Dual

D-Type FF 7474

35578156-1001

I.C., 2048-B RAM

8156

35674174-1900

I.C., Hex D-Type

FF

74LS174

35674273-1900

I.C.,

Octal D-Type

FF

74LS273

36000045-2001

Bushing

Nylon 0.252 I.D.

36350009-2001 O-Ring

0.921 I.D.

36350010-2001

O-Ring 0.114 I.D.

36350051-2001

Bumper, 0.12 in. x 0.50 in.

36700028-2002 Spring

36700033-2001

Spring Ext. 0.18 Dia.

x

0.62

in. Lg.

37810690-1001

Crystal 6 Mz

38040020-1900

Semicond

Diode TBAX

IN4002

38045400-1900

Semicond Diode Rect. IN5400

38052370-1900

Semicond Diode

TBAX

8.2 IN5237

38100211-1001

Semicond LED

w/Leads

38100904-1900

Semicond Diode TBAX

8-5

A1 2

8-3/1

2.3

3

8-4

A9

2

8-9

43

4

8-5

A2

2

8-4

A7

2

8-9

40

6

8-9

41 4

8-2

A4

2

8-4

A8 2

8-9

42

4

8-4

A1 2

8-4

A4

2

8-2

A3

2

8-3/1

A2

2

8-6

A3

3

8-6

A2

3

8-3/1

A3

2

8-4

A5

2

8-4

A2 2

8-6

A1

3

8-3/1

A4 2

8-4

A6

2

8-9

67 A/R

8-9

17 1

8-9

51 2

8-9

52 1

8-9

21

3

8-9

19 2

8-9

65

1

8-9

20

2

8-9

68

1

8-9

61 1

8-9

18 1

8-5

5

2

8-3/1

3.2

6

8-5

9.5 1

8-6

6 4

8-2

5 1

8-3/2

5 2

8-9

44 1

8-9

45

6

8-9

2 4

8-9

3

1

8-9

38

1

8-9

4

5

8-30

PART

NUMBER

DESCRIPTION

38201200-

38201252-

38239040-
38239060-

38245062-

38263880-

39030000-
39090010-
39092508-

39660041-
39695333-

41000926-

41103926-

41102926-
41122925-

41151926-
41152926-

41155926-

41201926-

41222925-
41271926-
41472926-
41821926-

46101502-
62000111-

62001100-
63669022-
63669142-

63669142-
63669167-

63669183-
63669185-
63669186-

63669187-

63669190-
63669196-
63669197-

63669202-

63669205-

63669208-
63669209-

63669210-
63669235-

63669236-
63669240-
63669242-

-1900

-1900

-1900

-1900

-1900

-1900

•100

100
100

100

2002

100
100
100

100
100

•100

•100

•100

•100

100

•100

•100

100

300

5005

200

200

200

200

200

200
200
200
200
200
200
200
200

200

200
200

200
200

200

520

Seraicond,

XSTR,

NPN,

Pwr,

TIP120

Semicond,

XSTR,

PNP,

Pwr,

EP3011

Semicond,

XSTR

GP 2N3904

Semicond,

XSTR,

PNP,

GP,

2N3906

Semicond,

XSTR

2N5062

Semicond,

XSTR,

NPN,

Pwr,

2N6388BT

Fuse

Glass

.25 Dia

1 Amp

Slow

Blow

Switch,

PC

Right

Angle

Mount,

SPDT

Switch

Block,

4

Position

Cord,

18 AWG,

6 Ft.

Strap

Cable

Ohm,

1/4W,

10%

10K

Ohm,

1/4W,

10%

1K

Ohm,

1/4W,

10%

1.2K

Ohm,

1/4W,

5%

150 Ohm,

1/4W,

10%

1.5K Ohm,

1/4W,

10%

1.5M

Ohm,

1/4W,

10%

200 Ohm

2.2K

Ohm,

1/4W,

5%

270 Ohm,

1/4W,

10%

4.7K

Ohm,

1/4W,

10%

820

Ohm,

1/4W,

10%

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon.

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Resistor,

Carbon,

Pot

Single

Turn

1K

Warning

Decal

Fuse

Rating

FF

Head

Assembly,

7 Wire

Flex

Circuit

P.C.B.

Artwork

Logic

Shaft,

Carriage

Shaft,

Carriage,

Upper

Roller

Side

Plate,

Right

Hand

Gear

Cluster,

16/60

Gear

Cluster,

16/56

Side

Plate,

Left

Hand

Ratchet

Pawl

Roller,

Detent

Bracket,

Detent

Shaft,

Yoke

Pivot

Clip,

Spring

Ribbon

Roller,

Driven

Ribbon

Stripper,

Drive

Pivot,

Ribbon

Stripper

Yoke
Pawl

Guide,

Molded

Rack,

Carriage,

Molded

Body

Cover

FIGURE

INDEX

NUMBER

NUMBER

OTY.

8-19

14

1

8-9

15

1

8-9

13

2

8-9

12

4

8-9

16

2

8-9

11

8

8-9

84

1

8-9

26

2

8-9

77

1

8-9

82

1

8-9

81

1

8-9

25

1

8-9

62

15

8-9

53

19

8-9

56

1

8-9

76

1

*

8-9

70

1

I 8-9

63

1

8-9

71

1

8-9

24

3

8-9

22

2

* 8-9

54

4

8-9

69

8

8-9

23

8-9

46

8-4

1

8-9

1

8-3/1

8

8-3/2

1

8-3/2

13.1

12

8-5

7

8-4

12

8-4

14

8-5

2

8-5

6

8-3/2

7

8-3/2

8

8-3/2

12

8-5

1

8-2

3

8-2

1

8-2

4

8-3/2

13.3

8-5

8

8-3/1

7

8-2

6

8-31

PART

NUMBER

DESCRIPTION

FIGURE

INDEX

NUMBER NUMBER QTY.

8-6

1 1

8-3/2 13 3
8-3/2

2

8-3/1

4

8-3/2

10

8-3/2

3

8-3/2

3

8-4

3

8-4

10.2

8-4

10

8-4

13.1

8-4

13

8-2

8

8-3/1

1

8-3/1

9

8-4

2

8-2

2

8-5

9

8-3/1 3.1

8-7

4

8-7

6

8-7

2

8-7

3

8-7

1

8-4

13.2

8-3/2

9

8-3/2 11

8-3/2

15

8-3/1

5

8-2

10

8-4

4

2

8-5

4.2 2

8-4

6

2

8-4

16

1

8-2

12 1

8-2

9

1

8-4

5

2

8-3/2 13.2 6

8-6

9

1

8-4

11 1

8-4

7 1

8-4

15 1

8-5

3

2

8-6

3 1

8-6

7 1

8-6

10 1

63669243-5070

63669254-5001
63669255-2001
63669256-5001

63669258-2001

63669259-2001

63669260-2001

63669262-2001
63669263-2001
63669264-4001
63669266-2001
63669267-5001

63669271-4001
63669276-5001

63669278<5001

63669279-2001

63669280-2001

63669287-4001

63669288-2001
63669290-2001

63669291-2001

63669292-2001
63669293-2001

63669294-2001
63669295-2001

63669303-2001

63669304-2001

63669304-2002

63669305-2001

63669306-2001

63669311-2004

63669313-2001

63669315-2001

63669316-2001
63669319-2001

63669320-2001

63669321-2001
63669322-2001
63669326-2001
63669327-2001

63669330-2001
63669338-4001

63669342-2001

63669348-2002

63669349-3001
63669350-3001

Base Cover

Assembly,

Paper

Pinch Rollers

Full

Pan, Paper

Feed

Assembly,

Side Plate

Right

Cam,

Release

Release

Lever

Shaft,

Release Lever

Cam,

Head Gap

Adjustment

Pinion,

Motor

Assembly,

Motor

Drive

Gear

,

Rotor

Assembly,

Rotor

Assembly,

Ribbon

Drive Motor,

60 Hz

Assembly,

Side Plate,

Left

Assembly,

Head/Carriage

Head Adapter

Ribbon Roller,

Driver

Assembly,

Solenoid

Paper Roller

Holder,

Paper Roll

Dancer

Bar

Axle,

Roller Paper

Hub,

Roll Paper

Spring, Dancer

Magnetic

Rotor, Large

Hex

Spring, Detent

Arm

Disengagement,

Right

Hand

Arm Disengagement,

Left Hand

Spacer,

Paper Roller Drive

Spring, Ribbon

Roller

Shaft,

Ribbon

Roller/Insert

Washer, Hinge

Pin

Ribbon Roller

Head

Adapter

Bushing, Eccentric

Carriage

Button, Ribbon

Bearing, Thrust

Pin Ribbon Roller

Shaft, Roller

Cap,

Base Cover

Holder , Sensor

Adapter, Flex

Circuit

Assembly,

Ribbon

Cable

7

Wire Hd.

Bumper Pad

Shield,

High Voltage

Label, Power
Label,

Reset

8-32

PART

NUMBER

DESCRIPTION

FIGURE

NUMBER

INDEX

NUMBER

QTY.

63669379
63669380

63669382
63669383
63669384
63669385
63669388

63669389

63669390

63669390

63669391

63669392

63669393

63669395-
63669400-
63669401-

63669402-
63669403-

63669406-

63669407-

63669407-
63669408-

63669412-
63669421-
63669427-
63669437-

63669438-
63669439-

63669441-
63669448-

63669450-

63669480-

63669503-

63669503-
63669515-
63669555-

63669557-

63680115-
63680117-

63680137-
63680138-

63680139-

63680140-

63680141-

63680168-
63680169-

-2001

-6001

2001

-2001

-2001

-2001

-2001

-2001

-2001

-2002

•2001

2001

•2001

2001

2001
2001

•2001

2001

•2001

2001

-2002

•2001

2001

4000

2001

2001

5001

2001

2001

2001

5001
2001

4002

4003

4001

5001

2001

5001

2001
2001
2001

2001

2001

2001

2001

2001

Spring,

Blocker

Kit,

Capacitor

Metric

Thread

Foam,

Top

Cover, Front

Foam,

Top

Cover,

Middle

Foam, Top

Cover,

Rear

Blocker,

Line

Feed

Foam,

Body

Cover

f

Foam,

Body

Cover,

Foam,

Body

Cover,

Side

Corner

Front

Middle

Left

Front

Corner

Foam,

Body

Cover,

Right

Front

Cover

Foam,

Body

Cover,

Side

Foam,

Body

Cover,

Front

Foam,

Body

Cover,

Top

Foam,

P.C.

Board

Foam,

Base,

Left

Front

Corner

Foam,

Base,

Left

Front,

Left

Middle

Foam,

Base,

Right

Front,

Right

Middle

Foam,

Base,

Right

Front

Corner

Foam, Base,

Left

Rear

Corner

Foam,

Base,

Left

Rear

Foam,

Base,

Right

Foam,

Base,

Right

Rear

Corner

Heat

Shield,

Transformer

PCB,

730 Logic

w/Condensed

Basic

Hinge

Pin

Pin,

Hinge,

Ribbon

Tensioner

Assembly,

RTP

Switch

Tensioner,

Ribbon

Bracket,

Ribbon

Tensioner

Spring,

Ribbon

Tensioner

Assembly,

Ribbon

Tensioner

Shield,

Transformer

I.C.

Assembly

8049

I.C.

Assembly

8039

PCB,

Flyback

Protect

Bd.

Assembly,

Carriage

and

Shafts

Clevis

Pin,

Solenoid

Assembly,

Pin

Feed

Rollers

Roller

Drive

Tractor

Foam,

Body

Cover,

Pulley

Side

Foam,

Body

Cover,

Rear

Corner

Foam,

Body

Cover,

Middle

Foam,

Rear

Corner,

Pulley

Side

Foam,

Body

Cover,

Front

Corner

Stripper,

paper,

Pinned

Platen,

Hex,

Pinned

8-3/2

6 1

8-9

5 1

8-8

1 1

8-8

2 1

8-8

3 1

8-3/2

14

1

8-8

5 1

8-8

10

1

8-8

11

1

8-8

4 1

8-8

6 1

8-8

13

1

8-8

14 1

8-6

4 1

8-8

16

1

8-8

17

1

8-8

18

1

8-8

19

1

8-8

20

1

8-8

21

1

8-8

22 1

8-8

23

1

8-6

8 1

8-9

85 1

8-5

4.1

2

8-2

7.3

1

8-9

72 1

8-2

7.2 1

8-2

7.1 1

8-2

7.4 1

9-2

7 1

8-6

5 1

8-9

48A

A/

8-9

48 1

8-9

86 1

8-4

8 1

8-5

10 1

8-3/1

3 1

8-3/1

3.4

2

8-8

12

1

8-8

7 1

8-8

15

8-8

8 1

8-8

9 1

8-3/1

2.2

1

8-3/1

2.1

1

8-33

PART

NUMBER

DESCRIPTION

FIGURE

INDEX

NUMBER NUMBER QTY

8-3/1

2

1

8-2

11

-

8-7

5

2

8-6

2 1

63680170-5001

63701468-6003

81700332-2001

xxxxxxxx-xxxx

Assembly, Hex

Platen Pinned

Kit, Zip-

Pack, 12 Ribbons

Paper Guide
P.C.B. 730 Logic

8-34

APPENDIX

A

ADJUSTABLE PIN

-

FEED DRIVE

ROLLER

PURPOSE

-

The new Adjustable

Pin

-

Feed Roller

accommodates

variations

in width

dimensions

between

pin-feed holes of

fan-fold

paper.

DESCRIPTION

-

Refer to Figure

1 (detail in

Figure

2, reverse side).

The

Adjustable

Pin-Feed Drive

Roller

has

adjustable rings

and

tension springs

at

each

end. The tension springs

ensure

pin-to-pin

distance,

once

set by

the

operator.

The Drive Pin Rings

move

longitudinally

while

retaining

proper

pin

alignment. Each Adjustment

Ring has eight

fixed

positions,

allowing

fine

adjustment

of pin-to-pin

distance.

Figure

1

.

ADJUSTABLE

PIN-FEED

DRIVE

ROLLER

DIMENSION "A"

(Home

Position)*

o Short Version

(P/N

63669489-5001)

228

mm

_+1

mm

o Long

Version (P/N

63669489-5002)

238 mm

+^1

mm

o See

Figure

2

for

"Home Position"

A-1

DIRECTIONS

-

Refer to Figure

2.

To adjust

the pin-to-pin

distance

to accommodate

the fan-fold

paper,

perform the following:

1

Place front

panel switch

in

the OFFLINE position

and turn power OFF.

2.

Remove the

power plug from

wall outlet.

3.

Remove

top

cover

from

printer.

4.

Grasp Drive Pin

Ring and Adjustment

Ring

at one end

of roller

and slide

toward

end of roller.

5.

With

spring

compressed,

rotate Adjustment

Ring (with

slots)

to reposition

the drive

pins...

o Move to

a deeper slot to

reduce pin distance.

o Move to

a

shallower

slot to increase

pin

distance.

o

Repeat

at other end of

roller if

necessary.

NOTE

The shaded

area in Figure

2

illustrates the "HOME"

posi-

tion

(228.6 mm or

9"

for

short

version;

238.6

mm or

9.4"

for

long

version)

.

The

printer

is

shipped from

the factory

set in the "HOME"

position.

CAUTION

Index

pin MUST

stay in

Drive

Pin

Ring

slot. Make

certain

that Cam

Pin falls into

Cam

Slot.

INDEX

PIN

INDEX

SLOT

DRIVE

PIN RING

HOME

POSITION

ADJUSTMENT

RING

Figure

2. ADJUSTABLE

DRIVE

ROLLER

DETAIL

A-

ILLUSTRATED PARTS BREAKDOWN

-

The

new Adjustable

Pin-Feed

Drive

Roller is

broken down as

follows:

ITEM

1

1.1

1.2

1.3

1.4

1.5

1.6

1.7

PART NUMBER

63669489-5001

63669476-2001
63669486-2001

36350009-2001

33150000-2010

63669485-2002

63669484-2001
63669488-2001

DESCRIPTION

QTY.

Assembly, Adj. Pin Feed

Roller,

Short

1

NOTE: This

assembly is

made

up of items

1.1 through

1.7.

Endcap,

Drive Roll,

Adj.

Pin

2

Paper

Roller, Short

1

O-Ring

0.921 O.D.

6

Dowel Pin

10

Adjustment

Ring

2

Drive

Pin Ring

2

Comp. Spring, Pin

Feed Ring

2

ITEM

2

2.1

2.2

2.3

2.4

2.5

2.6

2.7

PART

NUMBER

63669489-5002

63669476-2001

63669486-2001
36350009-2001

33150000-2010

63669485-2002

63669484-2001
63669488-2001

DESCRIPTION

QTY.

Assembly,

Adj.

Pin Feed

Roller,

Long

1

NOTE: This

assembly

is

made

up of items

2.1 through

2.7.

Endcap,

Drive Roll,

Adj.

Pin

2

Paper

Roller,

Long

1

O-Ring

0.921

O.D.

6

Dowel Pin

10

Adjustment

Ring

2

Drive Pin Ring

2

Comp. Spring, Pin

Feed

Ring

2

A-

i

RADIO SHACK Ma DIVISION

OF TANDY

CORPORATION

U.S.A.: FORT WORTH,

TEXAS 76102

CANADA: BARRIE,

ONTARIO

L4M

4W5

TANDY

CORPORATION

AUSTRALIA

280-316

VICTORIA ROAD

RYDALMERE.

NSW. 2116

BELGIUM

PARC

INDUSTRIEL

DE NANINNE

5140

NANINNE

U.K.

BILSTON ROAD

WEDNESBURY

WEST

MIDLANDS

WS10

7JN

880-37400762

PRINTED

IN U.S.A.