Sams STAR NR-10 Service Data

09068

HOWARD

W.

SAMS

SiCOMPANY

COMPUTERFACTS

8

Technical

Service Data

STAR®

MODEL

NR-10(VERSIONS

1,2,3)

PRINTER

FEATURES

COMPLETE

SCHEMATICS •

PRELIMINARY

SERVICE CHECKS

•

TROUBLESHOOTING TIPS

•

EASY-READ

WAVEFORMS

• REPLACEMENT

PARTS LISTS •

SEMICONDUCTOR CROSS-REFERENCE

SflR

S

COMPUTERFACTS

STAR

MODEL

NR-10(VERSIONS

1,2,3)

(/)

©

EC

2

|>*

o

PRELIMINARY

SERVICE

CHECKS

This data provides

the user with a time-saving

service

tool which

is

designed

for quick Isola-

tion and

repair of Printer malfunctions.

Check all Interconnecting cables

for

good

connection

and

correct hook-up before making

service checks.

Always turn Printer Off before connecting or

disconnecting

connectors, boards

or

Computer.

Replacement

or repair of

the Fuse Board,

Control Board,

Control Panel Board or

connectors may be

necessary after malfunctions

have been Isolated.

TEST

EQUIPMENT

Digital Volt/Ohm Meter

Logic

Probe

TOOLS

Print Head Cleaning Equipment

Contact and

Switch Cleaner (non-spray

type)

Phil

lips Screwdriver

Low Wattage

Soldering Iron

Desoldering

Equipment

REPLACEMENT PARTS AND

DESCRIPTION

Control Board
Control Panel

Board

Fuse Board

CM1 Carriage

Motor

DB1

Bridge

Rectifier

DB2 Bridge

Rectifier

Fi Fuse

4A

125V

AC (Fuse Board)

F2

Fuse 5A 125V

AC

(Main Board)

F1,3,4,5 Fuse

3A

125V

DC (Main

Board)

IC1 Voltage

Regulator

(5V)

LF1

Paper

Feed

Motor

Ml Home Position Sensor

M2

Paper End Sensor

M3 Release Lever

Switch

M4

Automatic

Sheet Feeder Switch

PH1

Print Head

SW1

Power

Switch

T1

Power Transformer

TR1 Voltage Regulator 3.6V

TR2

Voltage

Regulator

39V

XTAL1

14MHz Crystal

SAMS.

Howard

W. Sams

&

Co.

4300

West

62nd Street,

P.O.

Box

7092,

Indianapolis,

Indiana

46206

U.S.A.

The

listing

of any available replacement

part herein

does not

constitute in

any case

a

recommendation,

warranty or

guaranty

by

Howard

W. Sams

& Co. as to the quality and suitability

of

such

replacement part.

The numbers of these

parts have been

compiled from

information furnished

to Howard

W. Sams

& Co.

by the manufacturers

of the particular

type of replacement

part

"sted.

90CP19104

DATE

2-90

Reproduction

or

use, without express

permission,

of

editorial or pic-

torial

content, in

any manner,

is prohibited.

No

patent

liability is

assumed

with respect

to the use of the

information

contained herein.

©

1990 Howard

W. Sams & Co.

4300 West 62nd

Street, P.O.

Box

7092, Indianapolis,

Indiana

46206

U.S.A.

Printed in

U.S.

of

America

PRELIMINARY

SERVICE

CHECKS

(Continued)

POWER

SW1

1

20VAC

190mA AC

ADJUSTING

PLATE

SLOT

INTERCONNECTING

DIAGRAM

iNTERCONNECTING

DIAGRAM

XI

PRELIMINARY

SERVICE

CHECKS

(Continued)

CONTROL

BOARD

X

© ©

cot

cm

x

XTAL1

v,--\

ZJ

39¥

©

CONTROL

BOARD

III

PRELIMINARY

SERVICE

CHECKS

(Continued)

GENERAL

OPERATING

INSTRUCTIONS

PRINTER

SELF-TEST

Printer has a short

and

a

long Self-Test.

Short Self-Test prints

six lines

of 80-column

text

In

Draft

mode, then

stops. Short test

Is

started

by loading

paper and closing the

cover,

then

holding ON

LINE button down

while

turning

Printer

On.

Long Self-Test prints

80-column text In

Draft

and Near

Letter Quali-

ty

modes

In both

Standard

Roman

characters and

Italic

characters.

The long test

Is started

by

holding PAPER FEED

button

down while

turn-

ing Printer On.

The

long test continues

printing

until Printer

Is turned Off.

PANEL

CONTROLS

Cover

and Paper

switches

must be

activated for

the

printer to

go

ON

LINER. When ON LINE

Indicator LED Is On,

Printer

Is ready to

receive

data from Computer.

The MODE, PRINT

PITCH, TOF, and PAPER

FEED buttons are

disabled

when Printer

Is ON LINE. Pressing ON

LINE

button once stops

Printer from receiving

data from Computer and

activates the other

buttons.

Each time MODE button Is

pressed print mode

changes

between DRAFT

and NLQ. Pressing the

PRINT PITCH

button

cycles

thru Proportional,

80,

"96

and

136.

MODE

and PITCH selection Is

Indicated

by

Control

Panel LEDS.

Pressing PAPER

FEED

button advances paper one

line. Pressing TOF

button advances

paper

to

top of next

page

or form (Form Feed). Printer

has a

forward and reverse

microfeed

function

to

help

in

aligning the print start position.

To forward

microfeed, put

Printer Off

Line

then

hold

ON LINE button

down

and press PAPER

FEED button.

To reverse microfeed hold ON

LINE button down and press

TOF

button.

Margins can be set

while

printer If OFF LINE.

For left

margin hold MODE

down and press

TOF

until

the prlnthead reaches

the desired

posi-

tion.

For right margin

hold

MODE down

and

press PAPER

FEED

until

prlnthead

reaches

the

desired

position.

To make the current paper

position

the Top of

Form, hold PRINT PITCH down

and press TOF.

To disable software control

of

MODE and

PRINT

PITCH, hold either or both

buttons

down while

turning

Printer

On.

Button

selection will

work normally. To select

Italic mode

and

disable software

control of character

style,

hold the

TOF

button down

while turning

the

Printer

ON.

A

hex dump

can be

performed

by holding PAPER

FEED and MODE buttons

down while turning

Printer On. Printer will print

contents of

print buffer In hex form.

DISASSEMBLY

INSTRUCTIONS

UPPER

CASE UNIT REMOVAL

Remove Paper

and Printer

ribbon.

Disconnect

power

and remove

the Platen Knob.

Remove

the

Interface cover,

and remove

the

Parallel

Interface Board

by

pulling

It straight

up.

Remove the two

screws

securing

the Upper

Case.

Lift the back of the

Upper

Case slightly and

push it towards the

front

of printer to

separate the tabs

of

Upper

Case

from

the Lower

Case.

Disconnect

chassis lead

to Control

Panel and Connectors

(CN2

and CN3). Remove

the Upper Case.

CONTROL PANEL BOARD

REMOVAL

Remove the Upper

Case

unit, remove

the

tapping

screw

securing the

Cover

Switch.

Remove four

screws

securing

the

control

panel board.

Remove the Control Panel

Board and the

switch

out of

the Upper

Case unit.

PRINTER MECHANISM

REMOVAL

Remove

the

Upper

Case. Remove

the

plastic

door

covering the

ribbon

cable

and disconnect

the print Head

Cable

(CN11) from

the

Control

Board.

Remove

four

screws

securing the

Printer

Mechanism

to the

Lower

Case. Dis-

connect Connectors

CN6,

CN7, CN9

and CN10 from

the

Control Board.

Lift

the Printer

Mechanism

out of Lower Case.

CONTROL

BOARD REMOVAL

Remove

the

Printer

Mechanism

and disconnect

the

power

supply

connector

CN1. Disconnect

the

Fan

connector

CN4. Remove

eight screws

fastening

the

Control Board

to Lower Case.

Lift

the

Control

Board out

of the

Lower Case.

PAPER

FEED MOTOR

REMOVAL

Remove

the

Printer

Mechanism. Remove

two

screws

holding

the Paper

Feed Motor to

the

Printer

Mechanism.

Remove the

Paper

Feed

Motor.

CARRIAGE

MOTOR REMOVAL

Remove

the

Printer

Mechanism. Remove four

screws

securing

the

Carriage Motor Holder to

Printer

Mechanism.

Remove

two screws

fasten-

ing

the

carriage motor

to holder

and

remove

carriage

motor.

When the

carriage motor

Is

replaced,

adjustment

of Timing

Belt Tension Is

required.

PRINT

HEAD

Remove

the

Printer

Cover and ribbon cartridge.

Remove

the hook holding

the Print Head

In

place and

pull up the

Print Head. Remove the

Print

Head

Connector

Cover mounted to the

frame,

then remove

the

Print Head Cable

connected

to CN11 on the

Control Board. When

a

new Print Head

is

installed,

perform the

Print

Head Gap

Adjustment.

IV

PRELIMINARY

SERVICE

CHECKS

(Continued)

MISCELLANEOUS

ADJUSTMENTS

PRINT

HEAD

GAP

Set

Adjustment

Lever

to

position

1.

Measure

gap

between

Platen

and Ribbon

Guide

with

Carriage

Assembly

at

center,

left

end,

and

at

right

end.

All three

measurements

should

be

0.20mm

to 0.25mm.

See

Figure

A. If

any

mea-

surement

Is

out

of

tolerance,

loosen

Adjust-

ment

Lever

Nut.

Insert

a

small

rod

Into

hole

at left

end

of

Rear

Carriage

Shaft,

see

Figure

B.

To

adjust

right

end

gap,

rotate

Rear

Carriage

Shaft,

with

rod,

until

proper

gap

measurement

Is

obtained.

To

adjust

center

and

left

end

gap, hold

Rear

Carriage

Shaft In

position

with

rod,

and

rotate

Left

Adjustment

Bushing

until

proper

gap

measurement

is

obtained.

After

adjustment

is

complete,

tighten

Adjustment

Lever

Nut,

while

ensuring

that

Left

Adjustment

Bushing

and

Rear

Carriage

Shaft

do

not

move.

TIMING

BELT

TENSION

Set

Adjustment

lever

to

position

1,

see

Figure

A.

Position

Carriage

Assembly

to

right

end.

Check

Timing

Belt

Tension

for

25+4g

(3/4

to

1

oz)

to

deflect

the

back

length

of

the timing

belt

5/64"

to

the

front,

measured

5

Inches

to

the

right

of

the

center

of

the

Timing

Pulley.

If

measurement

is

not

correct,

loosen

screw

securing

Adjusting

Plate,

see

Figure

C.

Insert

a

common

screwdriver

Into

slot

on

Adjusting

Plate

and

adjust

until

proper

Timing

Belt

tension

Is

obtained.

Tighten

adjusting

Plate

Screw.

ADJUSTMENT

LEVER

FIGURE

A

0.20mm

To

0.25mm

POSITION

1

PLATEN

ADJUSTMENT

N.

BUSHING

ADJUSTMENT

LEVER

NUT

RIBBON

GUIDE

FIGURE

C

ADJUSTING

PLATE

TIMING

BELT

25±4g.

ADJUSTING PLATE

SLOT

j^y

ADJUSTING

PLATE

SCREW

HOME

POSITION

DETECTOR

FIGURE

B

LEFT

ADJUSTMENT

BUSHING

RIBBON

GUIDE

REAR

CARRIAGE

SHAFT

HOLE

REAR

CARRIAGE

SHAFT

Initiate

Printer

Self

Test.

Left margin

should

be

In

line

with

"0"

on

Ball

Roller

Scale

±lmm.

If

left

margin

Is

out of

position,

loosen

Home

Position

Detector

Screw.

Reposition

Home

Position

Detector

so

left

margin

Is

properly

positioned,

see

Figure D.

Tighten

Home

Position

Detector

Screw.

FIGURE

D

1

mm

1

mm

-HI-

CARRIAGE

ASSEMBLY

FRONT

CARRIAGE

SHAFT

o| mo z i

p

jmm i

c

H M H

hi

H

H H

H

M H M

H

PRELIMINARY SERVICE

CHECKS

(Continued)

SWITCHES

AND

JUT

DIP

SWITCH SETTINGS

"Caution": Do

not

change

the

Dip

Switch

setting when

the

prfnter

or

connected

computer

power Is "ON".

DSW1-1

If. "ON"

the

printer

will

stop

printing

when It

runs out

of

paper.

If "OFF"

this

switch disables

the

paper out detector*

DSW1-2 If "ON"

the

SELECT IN signal

of the

parallel

Interface

Is

held low.

If "OFF"

the

SELECT

IN

signal

Is

controlled

by host

computer

(when

High,

printer

cannot

accept

data

)

DSW1-3

If "ON"

the

down

load

character

definitions

are

Ignored

and the

RAM Is

used as

a print buffer.

If "OFF"

the

down

load

character

definitions

are

enabled

and the

buffer Is reduced

to

one

line.

DSW1-4 If "ON"

the

default

line spacing

is set

to 1/6 Inch.

If "OFF"

the default

line

spacing Is set

to 1/8

inch.

DSW1-5 If "ON"

Line

Feed

Is required

from the

host computer.

If

"OFF"

one Line

Feed

is auto-

matically performed

with

every

carriage

return.

DSW1-6 If "ON" bottom

margin

Is

not

set at

Power On.

If

"OFF" bottom

margin

Is

set

to

one Inch.

DSW1-7 If

"ON"

the

default

pitch Is

normal

Pica pitch

(10CPI).

If

"OFF" the

default

pitch

Is condensed

Pica

pitch (17CPI).

DSWJ-8

If "ON"

the

zeros will

be

printed

without

slashes.

If

"OFF"

the

printer

will

print

slashed

zeros.

DIP

SWITCH 2

DSW2-1

If "ON"

the default "character

style

Is

normal draft.

If

"OFF"

the

default

character

style

Is set

to Near

Letter

Quality.

DSW2-2

If

"ON"

the printer

emulates

the

Epson

FX-85

printer

(Standard).

If

"OFF"

the

printer uses

the

"IBM" compatible

mode.

DSW2-3 If

r

ON"

and DSW2-2

Is

"OFF", the

printer

emulates

IBM-P

(Propr Inter

5.

If "OFF"

and DSW2-2 Is

"OFF",

the

printer

emulates

IBM-G

(Graphic printer).

DSW2-4

This

switch

function depends

on

the

setting

of

Switch

DSW2-2.

If DSW2-2

"ON":

DSW2-4

"ON"

sets

MINIMUM

line

feed value to

1/216 inch,

DSW2-4

OFF

sets MINIMUM

line feed

value

to 1/144

Inch.

If

DSW2-2

Is 0FF:DSW2-4

"ON"

selects

Character

Set

#1,

OFF

selects

Character

Set

#2.

DSW2-5

If

"ON" the print

head

will return to

the

left margin

after

the paper

advance.

If

"OFF"

the print

head

will not return to

the

left margin

after

the

paper advance.

DSW2-6

thru

2-8

will

select

the default

International

character

set.

See Chart.

DIP Switch

1

DIP

Switch

2

The

DIP Switches

are located

under

the

Printer Cover

International

Character

Sets

Courtesy of

Manufacturer

SWITCH

USA

FRANCE

[

GERMANY

|

ENGLAM)

DENMARK SWEDEN

ITALY SPAIN

2-6

ON

OFF

ON

OFF

ON

OFF

ON

OFF

2-7

ON

ON

OFF

OFF

OH ON

OFF

OFF

M

ON

ON

ON ON OFF OFF

OFF

OFF

VI

PRELIMINARY

SERVICE CHECKS

(Continued)

SERVICE

CHECKS

MATCH THE

NUMBERS

ON THE

INTERCONNECTING

DIAGRAM AND

PHOTOS

WITH

THE

NUMBERS

ON THE

SERVICE

CHECKS

TO BE

PERFORMED.

©

PRINTER DEAD

(A)

Verify

connection of

chassis slip

connector to

pin on

Control

Panel

Board. Check

Cover

Open Detector

switch (SW8)

for

closed

continuity,

and

Control

Board connector CN3, pin

11 for

ground when SW8

is

closed.

(B)

CAUTION: If

printer

is still

turned

on,

Printhead may be

hot. Turn

off

printer

and

disconnect

printhead

cable from

Control Board.

Secure

printhead cable to

carriage

and

start

printer

self test.

If

carriage travels as

it

should in

self

test,

check

Printhead by

substi-

tution.

(C) Check AC

Fuse on

Fuse

board.

If

open

check Power

Transformer

(

I i

for possib le

short.

(D) If AC

Fuse is

good, check for

120VAC

between pins

of

Transformer Con-

nector on

Fuse Board. If

voltage

Is

missing,

check Fuse

Board by

substi-

tution.

(E)

Check for

30.2VAC

between pins 1

and

2 and

5.2VAC

between pins 3

and

4

of

connector CN1. If

either

voltage Is

missing, check

Power

Transformer

(T1) by

substitution.

(F)

Check for 39V

at

both ends of

Fuses

(F1,F3,F4,F5)

and 4.4VAC at Fuse

(F2)

on

the Control

Board.

(G) Check for

8.9V at the

collector of

Regulator

Transistor (TR1).

(H) If

8.9V is

missing check Diode

Bridge (DB2).

(I) Check for

5V at

the output of I

CI,

if

5V is

missing check I

CI by sub-

stitution.

(J)

Check for

3.6V at the

emitter of

Regulator (TR1).

If

3.6V

is

missing, check transistor TR1

and

Zener Diode

(ZD1 ) by

substitution.

(K) Check for

36.8V at the

emitter of

TR2.

(L)

Check for

pulses at pins

of XTAL1.

If pulses are

missing

check

XTAL1

by

substitution.

©

CARRIAGE ASSEMBLY

DOES NOT OPERATE

(A)

If

carriage

assembly moves,

then

stops

and alarm

buzzer sounds,

check

connectors

CN10

and CN7.

Check

voltage at CN7

Pin 8 for

over

1V

with

paper

loaded and under

.2V

wlth^}

no paper. Check

CN7 Pin 5 for

over

^m

,5V

when the Home

Position

Sensor

*»

(Ml) Is

clear and under

.25V

when

Oj

the sensor is

blocked.

""^i

(B)

Check the

timing belt.

(C)

Check

Carriage

Motor

winding

®

resistances.

Check the

motor by

sub-

^

stitution.

r

35

S3

(D5 Check Control

Board by

substitution.

©

PAPER

FEED MOTOR MALFUNCTIONING

(A)

Check Paper

Feed Gear Assembly.

(B) Check

Paper Feed

Motor.

(C)

Check

Connector CN9.

(D) Check Control

Board by substitution.

©

PRINT HEAD

MALFUNCTIONING

(A)

Check Print

Head for

damage

or

contamination.

(B)

Check the

resistance of Print

Head

solenoids.

WARNING; Shorted

Driver can

damage

Prtnt

Head.

Check

Drivers for short

before

re-

placing the

Print

Head.

@

PRINTER WILL NOT

RECEIVE

DATA

(A)

Check interface

Board

and cable.

CB)

Check

connector CN8 on Main

Board.

(C)

Check Control

Board by substitution.

©

CONTROL PANEL

MALFUNCTIONS

(A)

Check

connectors CN2

and CN3

on

Control

Board.

(B)

Check Control Panel Board

by

substi-

tution.

(C5 Check Control Board by

substitution.

<

5

m

o
z

m

M

PRELIMINARY SERVICE

CHECKS (Continued]

:.

:

?c

APER

FEED

CARRIAGE

COVER

OPEN

MOTOR

**OTOP

PHK.7W

CONTROL

PANEL

LF1

CP;

SW8

BOARD

PAPER

FEED

SEAR

ASSEWLY

0(30

)

PAPER

END 1

SENSOR

K2

20V

AC

FUSE

:->:

TIMING

p;

/TT\

/"~"\

BOARD

PRINT

PELT

HOME

POSITION

v!)

(!!)

md|

HEAD

SENSOR

PRINT HEAD

x_«^

W

00

Q

CABLE

CHASSIS-OVERALL

VIEW

VIII

PRELIMINARY

SERVICE

CHECKS

(Continued)

m

IIII6;

j^^p

o

o

o>

Nl

f^\

s

l

1D

J

O

v_y

s

12GVAC

i-

Z

30
_t

^a

m

>

f~\

33

33

(ic)

(0

vl/

5

,

"**_«*'

z

FUSE

(A

F1

3»

US

FUSE

BOARD

IX

PRELIMINARY

SERVICE

CHECKS

(Continued)

CONTROL

BOARD

X

CONTROL

BOARD

ill

PRELIMINARY

SERVICE

CHECKS

(Continued)

POWER

SW1

1

20VAC

190mA AC

ADJUSTING

PLATE

SLOT

INTERCONNECTING

DIAGRAM

iNTERCONNECTING

DIAGRAM

XI

PRELIMINARY

SERVICE

CHECKS

(Continued)

PREVENTATIVE

MAINTENANCE

ENVIRONMENT

Computers

perform

best in

a clean, cool area

that is

below

80 degrees

Fahrenheit

and free

of

dust and

smoke particles.

Even

though home

Computers

are not

affected

by cigarette smoke

as much

as commercial

Computers are

affected, it

is better

to mantain

a

smoke-free area

around

the Computer.

Do not

block cabinet vents

of Computer,

Monitor,

Printer, or

other

power

devices.

ELECTRICAL

POWER

Variations

in the line

voltage

can

affect the

Computer. Try

to avoid

these

fluctuations

by using

an

AC

receptacle

that is on

a power

line not

used by

appliances or

other

heavy current

demand

devices.

A

power-surge

protector,

power-line

conditioner,

or

non-interruptable

power supply

may

be needed

to cure the

problem.

Do not

switch

power On

and Off

frequently.

KEYBOARD

Liquids

spilled

into the

Keyboard

can ruin it.

Immediately

after

a spill occurs,

disconnect

the

Computer

power

plug from AC

power

outlet. Then, if

circuitry or

contacts are contaminated,

disassemble

the

Keyboard

and carefully

rinse the

Keyboard

printed

circuit board with

distilled

water and

let it dry.

Use a cotton swab

to clean

between the

keys.

Use a non-abrasive

contact

cleaner

and lint-free

wipers

on

accessible

connectors and

contacts.

DISK

DRIVES

Clean the

read/write

heads of the

Disk Drives

about

once a month or

after 100 hours

usage.

Use only

an approved

head

cleaning kit.

Handle

carefully

to preserve

proper disk

head alignment.

A sudden bump

or jolt

to

the Disk

Drives

can knock

the disk

head

out

of

alignment. If

Disk Drive must

be transported,

place an

old disk

in slot

and close

door during

transport.

Store

disks in their

protective

covers

and never touch the disk

surface. Observe

the disk

handling

precautions

usually found

on the back

of disk protective covers.

PRINTERS

Carefully

vacuum

the Printer

regularly.

Wipe surface

areas clean using

a

light

all-purpose

cleaner.

Do not

oil the

machine. The

oil will collect

abrasive grit and

dust.

The

dust will

act as

a

blanket. This

can

cause

components

to overheat and fail.

STATIC

ELECTRICITY

Static

electricity

discharge

can affect the

Computer. In order

to

minimize the possibility,

use

anti-static

mats,

sprays, tools

and

materials, and maintain

good humidity in the Computer en-

vironment.

MONITOR

Use

an

isolation

transformer

with

any Monitor

that

does

not

come as

part

of

the system since

some

Monitors

use a HOT

chassis

(chassis

connected

to

one

side

of

the

AC line). The

face of

the

Monitor

should

never

be left

on

for

long

period of time

at high brightness level except when

pattern

is

being

changed

periodically.

Use caution when

cleaning anti-glare screens, to

preserve

the

glare-reduction

feature.

Xli

SAM

S

COMPUTERFACTS

STAR

MODEL

NR-10(VERSIONS

1,2,3)

Star Micronlcs

Printers

are

warranted for one

year from

date of purchase. If

any

service

or modifications

are

performed during this

time

by other

than

Authorized

Star Micronics

Service

Centers,

the

manufacturers'

warranty

will

be void.

CO

n

ei

</)

z

o

55

cc

cc

'*

o

I

cc

z

-J

HI

Q

O

s

Q.

O

SAFETY PRECAUTIONS

See Page 1

3.

PRELIMINARY

SERVICE

CHECKS

ENCLOSED

INDEX

Page

Block Diagram

21

Disassembly

Instructions , 14

Exploded

Views

35,37,40,41,42

General

Operating

Instructions....

14

GridTrace

Location

Guide

Control Board....

44

Terminal

Guides

34

Line

Definitions.....

, 43

Logic

Charts

18,

19

Miscellaneous

Adjustments

15

Parallel

Interface

33

Parts

List

25 thru 32

Mechanical

36,38,39,40,41,42

Page

Photos

Chassis-Overall

View

23

Control Panel

Board

24

Control

Board...

1

1,12,45,46

Fuse

Board. . .

.'

22

Parallel

Buffer

Board

22

Pr

i nter

Se I f-Test

30

Safety

Precautions

13

Schematics

2 thru

10, 47

thru 57

Schematics

Notes

43

Serial

Interface

33

Switches

and

Jumpers

20,39

Test Equipment

16

Troubleshooting

16,17

o

^1

o

a
m

S.

w

30

33

Crt

O

Z

SAMS

Howard

W.

Sams

& Co.

4300

West

62nd

Street,

P.O.

Box

7092,

Indianapolis,

Indiana

46206 U.S.A.

The listing of

any available

replacement

part herein

does not

constitute in

any case

a recommendation,

warranty or

guaranty

by Howard

W. Sams

& Co.

as to

the

quality

and suitability

of

such

replacement

part. The numbers

of these

parts have

been

compiled

from

information

furnished

to Howard W.

Sams

& Co.

by

the

manufacturers

of the

particular

type of replacement

part

"sted

9QCP1

91

04 DATE 2-90

Reproduction

or

use, without

express

permission,

of editorial

or pic-

torial

content,

in any

manner, is

prohibited.

No

patent liability

is

assumed with

respect

to the

use of the

information

contained

herein.

©

1990 Howard W. Sams

& Co.

4300 West 62nd

Street,

P.O.

Box

7092, Indianapolis,

Indiana

46206

U.S.A.

Printed in

U.S.

of

America

A PHOTOFACT

STANDARD NOTATION SCHEMATIC

with

ansnmHi

O

©

Howard W

Sams &Co.

1990

STAR

MODEL NR-10(VERSIONS

1,2,3)

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1990

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1990

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W. Sams &

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1990

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A PHOTOFACT

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NOTATION

SCHEMATIC

with

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©

Howard W. Sams

& Co.

1990

48

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POLARIZED

SOURCE

SOURCE

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PHOTO

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SCHEMATIC

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A PHOTOFACT STANDARD

NOTATION

SCHEMATIC

with

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©

Howard

W Sams

S Co 1990

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CONTROL

BOARD

46

TR18

TR19

IC23

TR20

TR21

TR23

TR24

TR25

TR26 1C29

IC24

IC30

IC25 IC19 IC26

TR27

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INDICATE

PIN 1

UNLESS

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CONTROL

BOARD

45

SAFETY

PRECAUTIONS

1.

Use

an Isolation

transformer

for servicing.

2. Maintain AC line

voltage

at rated Input.

3.

Remove

AC power

from the

Printer

before

servicing

or installing

elec-

trostatically

sensitive

devices.

Examples

of

typical

ES

devices

are

integrated

circuits

and

semiconductor

"chip"

components.

4. Use extreme

caution

when handling

the

printed

circuit boards.

Some

semiconductor

devices

can

be damaged

easily

by

static

electricity.

Drain

off any

electrostatic

charge

on

your body

by touching

a known

earth

ground.

Wear

a

commercially

available

discharging

wrist

strap

device.

This

should

be

removed

prior to

applying

power

to the

unit

under test.

5.

Use

a

grounded-tip,

low

voltage

soldering

Iron.

6. Use an

Isolation

(times 10)

probe

on

scope.

7.

Do

not

remove

or

instal

I board,

mechanical

or electrical

parts

or

O

other

peripherals

with Printer

AC

power

On.

'

-m

8.

Do

not

use

freon-propel

led

sprays.

These

can

generate

electrical

^1

charges

sufficient

to

damage

semiconductor

devices.

^i

9.

This Printer

is equipped

with a

grounded

three-pronged

AC plug.

This

plug must

fit

into a

grounded

AC power

outlet.

Do

not

defeat

the AC

*

plug safety

feature.

O

D

10.

Periodically

examine

the AC

power

cord

for

damaged

or cracked

insula-

f"

tion.

2

11. The Printer

cabinet

Is equipped

with

vents

to prevent

heat

build-up.

Never

block,

cover or

obstruct

these

vents.

12.

Instructions

should

be

given,

especially

to

children,

that

objects

should

not

be

dropped

or

pushed

Into the

vents

of the

cabinet.

This

could

cause

shock

or equipment

damage.

13.

Never

expose

the

Printer

to water.

If

exposed

to

water,

turn

the

unit Off. Do

not

place the Printer

near

possible

water

sources.

14.

Never

leave

the Printer

unattended

or

plugged

into

the AC

outlet

for

long

periods

of time.

Remove

AC plug from

AC outlet

during

lightning

storms.

15.

Do

not a I

low anything

to rest

on AC

power cord.

16.

Unplug

AC power

cord

from

outlet

before

cleaning Printer.

17.

Never

use

liquids

or

aerosols

directly

on the

Printer.

Spray

on

cloth

and then

apply

to the

Printer

cabinet. Make

sure

the Printer

is

disconnected

from

the

AC power

line.

o

H

m

>

30

33

W
o

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(A

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w

13

PANEL

CONTROLS

GENERAL OPERATING

INSTRUCTIONS

Cover

and Paper

switches must be

activated for

the

printer to go ON LINER.

When ON LINE

Indicator

LED

is On, Printer

is ready to

receive

data

from

Computer.

The MODE,

PRINT

PITCH, TOF, and

PAPER

FEED buttons are

disabled when Printer

Is

ON LINE. Pressing ON

LINE

button

once

stops Printer from

receiving

data from

Computer

and activates the

other

buttons.

Each

time MODE button

Is pressed

print mode

changes between DRAFT and

NLQ. Pressing the

PRINT PITCH button cycles

thru Proportional,

80,

96 and 136. MODE

and PITCH selection Is

Indicated by

Control Panel

LEDS.

Pressing

PAPER

FEED

button

advances

paper

one

line.

Pressing TOF

button

advances

paper

to

top

of

next

page or form (Form

Feed).

Printer

has

a

forward

and

reverse

mlcrofeed

function

to

help in

aligning

the print

start

position.

To

forward

mlcrofeed,

put

Printer

Off

Line

then

hold

ON

LINE button

down

and press

PAPER

FEED

button.

To reverse

mlcrofeed

hold

ON

LINE

button

down and

press TOF

button.

Margins

can be

set while printer

If OFF

LINE.

For

left

margin hold MODE down

and

press TOF

until

the printhead reaches

the desired posi-

tion.

For

right

margin hold MODE down

and

press PAPER FEED until

printhead reaches the

desired position.

To make

the

current paper position

the Top of

Form, hold PRINT PITCH down and press

TOF.

To disable software control of

MODE and PRINT

PITCH,

hold

either

or both

buttons down

while

turning Printer On. Button

selection will

work normally. To select

Italic mode

and

disable software control

of character

style,

hold the TOF button

down while

turning

the

Printer ON.

A

hex dump can be

performed by holding

PAPER

FEED

and MODE buttons down

while turning

Printer On. Printer will

print contents of

print buffer In hex

form.

DISASSEMBLY

INSTRUCTIONS

UPPER

CASE

UNIT REMOVAL

Remove

Paper

and Printer ribbon.

Disconnect

power

and

remove the

Platen

Knob. Remove the

Interface

cover,

and remove

the

Parallel

Interface

Board by pulling It

straight up.

Remove

the two

screws securing

the

Upper Case.

Lift

the

back of the Upper

Case

slightly

and

push It

towards the front

of

printer

to

separate

the tabs of Upper

Case

from the Lower

Case.

Disconnect

chassis

lead to

Control

Panel

and

Connectors (CN2

and CN3).

Remove

the

Upper Case.

CONTROL

PANEL BOARD REMOVAL

Remove

the Upper

Case unit,

remove the tapping

screw

securing the

Cover

Switch.

Remove

four

screws

securing the

control

panel

board.

Remove

the Control

Panel Board

and the

sw.ltch

out

of

the Upper Case

unit.

PRINTER

MECHANISM REMOVAL

Remove

the Upper

Case.

Remove the plastic

door

covering the

ribbon cable and

disconnect

the

print

Head Cable (CN11)

from the Control

Board.

Remove four

screws

securing the

Printer

Mechanism to the

Lower Case.

Dis-

connect

Connectors

CN6, CN7, CN9

and CN10

from

the

Control

Board. Lift the

Printer

Mechanism

out

of

Lower

Case.

CONTROL BOARD REMOVAL

Remove the Printer

Mechanism

and

disconnect

the

power supply

connector

CN1.

Disconnect

the

Fan connector

CN4.

Remove eight

screws

fastening the

Control

Board to

Lower Case.

Lift the Control

Board out of the

Lower

Case.

PAPER

FEED

MOTOR

REMOVAL

Remove the

Printer

Mechanism,

screws holding

the

Paper

Feed

Printer

Mechanism.

Remove

Motor.

CARRIAGE MOTOR REMOVAL

Remove two

Motor to the

the

Paper

Feed

Remove the

Printer

Mechanism.

Remove four

screws

securing the

Carriage

Motor

Holder to

Printer

Mechanism.

Remove two

screws

fasten-

ing

the carriage

motor to

holder

and remove

carriage

motor.

When the

carriage

motor Is

replaced,

adjustment of

Timing

Belt

Tension Is

required.

PRINT

HEAD

Remove the

Printer

Cover

and ribbon

cartridge.

Remove the

hook

holding

the

Print

Head In

place

and pull up

the Print

Head.

Remove

the

Print

Head

Connector Cover

mounted

to the

frame,

then

remove the

Print

Head Cable

connected

to

CN11

on the

Control

Board.

When

a

new

Print Head Is

Installed,

perform the

Print Head Gap

Adjustment.

14

MISCELLANEOUS

ADJUSTMENTS

PRINT HEAD GAP

TIMING BELT TENSION

Set

Adjustment Lever

to

position

1.

Measure

gap between Platen and Ribbon Guide

with

Carriage

Assembly at center, left end, and

at

right end. All three measurements should be

0.20mm

to

0.25mm.

See Figure

A.

If any mea-

surement Is out of tolerance, loosen Adjust-

ment

Lever Nut.

Insert a

smal

I

rod

Into hole

at left

end

of Rear Carriage Shaft, see

Figure

B.

To adjust right end

gap, rotate

Rear

Carriage Shaft, with rod, until

proper gap

measurement Is obtained.

To adjust center

and

left end

gap,

hold Rear Carriage Shaft

In

position

with rod, and rotate Left Adjustment

Bushtng

until

proper

gap

measurement Is

obtained.

After adjustment Is complete,

tighten Adjustment

Lever Nut, while ensuring

that

Left Adjustment Bushing and

Rear

Carriage

Shaft

do not

move.

FIGURE

A

ADJUSTMENT

LEVER

0.20mm

To

0.25mm

POSITION

1

LEFT

ADJUSTMENT

>

BUSHING

ADJUSTMENT

LEVER

NUT

RIBBON

GUIDE

Set Adjustment

lever to

position

1,

see

Figure

A.

Position Carriage

Assembly to right

end.

Check Timing

Belt Tension for

25±4g

(3/4 to

1

oz) to deflect the back

length of the timing

belt

5/64"

to the front, measured 5 inches to

the right of the

center of the Timing Pulley.

If measurement

is not correct,

loosen

screw

securing Adjusting Plate,

see Figure C.

Insert a common

screwdriver Into slot on

Adjusting Plate and adjust

until proper Timing

Belt

tension Is obtained.

Tighten

adjusting

Plate Screw.

FIGURE C

ADJUSTING

PLATE

TIMING

BELT

25+4g.

ADJUSTING

PLATE

SLOT

ADJUSTING

PLATE

SCREW

o

3

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HOME

POSITION DETECTOR

FIGURE

B

LEFT

ADJUSTMENT

BUSHING

RIBBON

GUIDE

REAR

CARRIAGE

SHAFT

HOLE

REAR

CARRIAGE

SHAFT

CARRIAGE

ASSEMBLY

FRONT

CARRIAGE

SHAFT

Initiate

Printer Self

Test. Left

margin

should

be In

line

with

"0"

on

Ball

Roller

Scale

±1mm.

If left margin

Is out

of

position,

loosen Home

Position

Detector Screw.

Reposition Home

Position

Detector

so

left

margin is properly

positioned,

see Figure D.

Tighten Home Position

Detector

Screw.

FIGURE

D

1 mm

1

mm

QJ

IIP

ZIP 3|0g«iTT

H M H

M

H

HHH

H H M H

15

TEST EQUIPMENT

Test

Equipment listed

by Manufacturer illustrates

typical or equivalent equipment

used by SAMS' Engineers to obtain

measurements and is compatible

with most

types used by field service technicians.

Equipment

B&K Precision

Equipment No.

Sencore

Equipment No.

Notes

OSCILLOSCOPE

1541 A, 2120,

2125,

2160

SC61

LOGIC PROBE

DP51, DP21

LOGIC

PULSER

DP101,

DP31

DIGITAL VOM

388HD, 2800

SERIES,

2900 SERIES

DVM37,

DVM56A,

SC61

ANALOG VOM

114, 117, 177, 214

ISOLATION TRANSFORMER

TR110,

1604, 1653, 1655 PR57

FREQUENCY COUNTER

1803, 1804, 1805 FC71,

SC61

COLOR

BAR GENERATOR

1211B, 1251,

1260,

1249

CG25, VA62A, NT64

RGB

GENERATOR

1260, 1249

RG67

FUNCTION

GENERATOR

3020, 3011 A,

3026, 3030

HI-VOLTAGE PROBE

VOM/DMM

Accessory probes

HV-44

PR-28(HV)

HP200

TP212

TEMPERATURE PROBE

TP-28,

TP-30

CRT

ANALYZER

467,

470, 480,

490

CR70

DIGITAL IC

TESTER

560, 550, 552

CAPACITANCE ANALYZER

810,

820, 830 LC76, LC101, LC102

INDUCTANCE ANALYZER

LC76, LC101, LC102

TRANSISTOR

TESTER

TF46

FLYBACK-YOKE TESTER

LC76, LC101, LC102

TROUBLESHOOTING

POWER

SUPPLY

Printer Is

dead.

Check

Fuse

(F1)

on the Fuse

Board. If Fuse

Is open check

Power Trans-

former

(T1) and

Fuse Board components

for

possible shorts. If

Fuse

F1

Is good,

check

for 30.2VAC between

pins

1

and 2 and

8.2VAC

between pins 3 and 4

of Connector CN1. If

either voltage

Is missing,

check for 120V

AC

between pins NW and LB

of Transformer

Con-

nector.

If 120V

AC Is present,

check Power

Transformer

by

substitution.

If voltage Is

missing, check Power

Switch

(SW1). If AC

voltages are

present on Connector

CN1, check

for

39.0V at collector

of Regulator

Transistor

(TR2).

If voltage

Is missing, check Fuse

(F4),

Electrolytlcs

(C1,C2) and Bridge

Rectifier

(DB1).

If 39V

Is present

.

at

col

lector of

TR2, check for 36.3V

at

the

emitter of

TR2 and 40.3V

at the cathode of

Dtode

D1.

If 36.3V

Is missing, check

for

36.9V

at the base of

regulator

TR2. If

36.9V

Is

missing,

check

TR2, Zener Diode ZD2, Diode

D1 and Electrolytic

C8.

Check for

8.9V at the

collector of Regulator

Transistor

(TR1).

Check for

3.6V

at the emitter

of

TR1. If

3.6V

Is missing check for

4.2V at the base of TR1

If 4.2V

Is missing check

Zener Diode ZD1,

Resistor R1 and Transistor

TR1 and associated

components.

If 8.9 V

Is missing at

the

collector

of the Regulator

Transistor TR1,

check

Fuse

F2

and Diode

Bridge

(DB2). Check

for

5V at the output

of

Regulator IC

(I

CD.

If the 5V

Is missing, check

I

CI by substi-

tution.

CPU OPERATION

Check

for pulses on pins

47 thru 62 of CPU

IC

(I

CI

3). If

the

pulses

are missing,

check for

5V at

pins 42,

43,

63 and 64

of IC13.

If the

5V Is missing, refer to "Power

Supply"

section

of this

Troubleshooting guide. I f

5V

Is pre-

sent, check for 14MHz

waveforms

on

ptns 30 and

31 of

IC5.

If

waveforms

are

missing

or

Incorrect, check

crystal (XTAL1 )

and

associ-

ated components.

If

waveforms are

correct

at

pins

30

and 31 of

IC5,

check for

momentary

logic

low on pin

28

(RESET)

of

IC5,

when

the

printer Is first

turned

On.

PAPER FEED MOTOR

Paper

Feed

Motor

does not operate properly.

Check Platen Gear

Assembly for binding.

Check

Paper Feed

Motor

windings by

measuring for 36

ohms between pin

1 and each of

pins 3 and

4,

and

between pin 2

and each of

ptns

5 and 6 of

Connector CN9. If the

resistance of any

of

the motor windings Is Incorrect, check

Paper

Feed motor by substitution.

If Paper

Feed

Motor checks good, press

Form

Feed

Button and

check waveforms and signals

at pin

5, 9,

11

and 13

of

IC12. If

waveforms are not present

check

IC5

by

substitution. If

waveforms

are

present check waveforms at pins

6, 8,

10 and

12 of

IC12. If

waveforms are

missing

check

IC12. Check

waveforms at pins

3, 4,

5 and 6

of Connector CN9. If

waveforms are missing

16

TR24.

If waveforms

slstors

TR13,

TR16,

elated

components,

check

for

waveforms

check

Transistor

Array

(TAD by

substitution.

Check

transistors

TR4, TR5 and

TR6

and associ-

ated

circuitry.

CARRIAGE

MOTOR

Carriage

Motor does

not

work.

Check

timing

belt.

Move

Carriage

Assembly

manually

and

check

for

binding

or

obstructions.

If

Carriage

Assembly moves

slightly

and stops

and

the

alarm buzzer

sounds,

check

Home

Position

Sensor

by

referring

to

"Verify

Sensor

Opera-

tion"

section

of this

Troubleshooting

guide.

Check

Carriage

Motor

windings by

measuring

for

2.9

ohms

resistance

between

pins 1

and 2

and

pins

3 and 4

of Connector

CN10.

If the

resis-

tance

of

either of

the

windings

Is

Incorrect,

check

Carriage

Motor by

substitution.

Set the

printer

to perform

self-test

and check

for

pulses

at

IC29

pins

3,

4,

9

and

14.

If

pulses

are

missing,

check

IC5

by

substitution.

If pulses

are present

check

for

pulses

at

IC29

pins

10,

11,

12 and

13.

If pulses

are missing

check

IC29.

If

pulses are

present

check

wave-

forms

at

the bases

of

TR11,

TR14,

TR20

and

are

missing

check

tran-

TR23

and

TR26,

and

asso-

If

waveforms

are

present

at

Collectors

of

TR9 and

TR18.

If

waveforms

are

present,

check

trans-

istors

TR15,

TR16,

TR21 and

TR25

and associ-

ated

components.

If

waveforms

are

missing

check

for

pulses

at

pin 3 of

IC18 and

IC23.

If

pulses

are

found

check

transistors

TR9,

TR10,

TR18 and

TR19I,

and

associated

components.

If

pulses

are

missing

check

for

pulses

at

IC19 pin 3

and

IC19

pin

6. If

pulses

are found

check

IC18 and

IC23, and

associated

components.

If pulses

are

missing

check

IC19,

CIC24 and

IC25.

PRINT

HEAD

Print

Head

does

not print

correctly,

dis-

connect

Print

Head cable

from

Connector

CN11.

Check

for

6 ohms

resistance

between

pin 7

and

pins

1, 2,

and 5

between

pin 6

and

pins

3,

4

and

11,

and

between

pin 8 and

pins

12,

13

and

14 of

the

Print Head

Cable.

If

any of

the

resistances

are

not correct,

check

the Print

Head by

subsltutlon.

Before

replacing

the Print

Head,

check

the

Driver

Transistor

Arrays

(TA2

and

TA3)

and

Transistor

TR30

associated

with the

defective

Print

Head Solenoid.

NOTE:

New

Print

Head

may be

damaged

If

printing

Is resumed

with a

defective

driver

transistor.

If the Print

Head

checks

good,

set

the

printer

In

self

test and

check

for the

waveform

at

I

CI

4 Pin

1. If the

waveform

Is

present

check

TR22 and

associated

components.

If

the

waveform

Is missing,

check

IC21.

If

the

signal

Is

present,

check

for the

signal

at the

Collector

of

TR22.

If

the

signal

Is missing

check

Transistor

TR22 by

substitution.

TROUBLESHOOTING (Continued)

If

the signal

Is

present

at

pin 1

of IC14

check

waveforms

at

Inputs

and

the

outputs of

IC14.

If

waveforms

are

present

at

Inputs and

missing

at

output,

check

IC14 by

substitution.

If

waveforms

are

missing

at

Inputs,

check the

CPU

(IC5)

by

substitution.

If signals

are

present

at outputs

of

I

CI

4,

check

for signals

at Inputs

and

outputs of

Transistor

Arrays

(TA2

and

TA3).

If Input

signals

are missing

check

Inverters

(IC22

and

IC28).

If Transistor

Array

Input

signals are

good

and outputs

are

missing

check

Arrays

and

associated

components.

PRINTER

WILL

NOT

RECEIVE

DATA

(SELF-TEST

WORKS)

(VERSION

3)

~"~~~

Connect

printer

to computer

and

program

computer

to send

Information

to

the

printer.

Check

for

data

pulses

on

pins 11

thru 18

of

Interface

IC (IC2).

If

pulses

are

present

check

for

pulses

on

pins 22

thru 29

of

IC2.

^

If

pulses are

not

present

at

pins 22

thru

29

ii

check

IC2 by

substitution.

If pulses

are

W

missing

on

pins

11 thru

18

of

IC2, check

O)

Connector

CN2,

Parallel

Interface

Card

in

the

>!

computer,

and the

Printer

Interface

Cable.

VERIFY SENSOR

OPERATION

Buzzer:

Turn

printer

on

without

paper

Installed.

Buzzer

should

sound

momentarily.

If

buzzer

falls

to

operate,

check

I CI

3,

Transistor

(TR3), Buzzer

(Bz), Diode

(D3) and

the

CPU

(IC5).

Paper

Empty

Sensor:

Make

sure

that

Dip Switch

1-1

Is On

to detect

paper.

Check

for

logic

high on pin

41 of CPU

(IC5)

which

will

change

to

a

logic

low

when

printer

runs out

of paper.

If

logic

Is

not correct,

check

IC13

pins

12

and

13,

Switch

Transistor

(TR7)

and Paper End

Sensor

(M2).

If the

logic

reading

on pin

41

of IC5

Is correct

and

the

printer

continues to

print

when

out of

paper,

check

the

Paper End

Sensor

M2 for shorts,

and

check

IC5 by

substi-

tution.

Head

Temperature

Sensor:

Disconnect the

prlnthead

and

connect

a

10K variable

resistance

between

CN11

pins 9

and

10.

Start

Self

Test.

With

the

variable

resistance

at

10K, the

printer

should

print

the test In

bi-directional

mode,

and

the voltage

at

IC30

pins

8

and

10

should

be

between

and

2.6V.

Reduce

the variable

resistance

to

a value of

from

2.2K

to

1.44K.

The

test should

print

In

left

to

right

direction

only,

and

the voltage

at

IC30 pins

8

and

10

should

be

2.65V

to 3V.

Reduce

the

variable

resistance

to a value of

from

1.4K to

0. The

printer

should

stop print-

ing

and

the voltage

at pins

8

and 10

of

IC30

should be

3V

or over.

O

D

m

r-

Z

3)

S

E

3J

3)

</>

5

z

W

-i

To

w

17

LOGIC

CHARTS

PIN IC

PIN

IC

PIN

IC

PIN IC IC

PIN

IC

PIN IC

PIN IC

NO.

2 NO. 2 MO. 2 NO. 3

5

NO.

5 NO.

5 NO.

5

1 H

21

L

11

H 1

P L

21

P

41

H

61 P

2

*

22

P

42

H

2

H

H(23)

22

H

42

H

62

P

3

H

23

P

3 H

H(21)

23

P(22)

43 H

63 H

4 H

24

P

4

P L

24

P(24)

44

P

64

H

5

H

25

P

5 H H

25 H

45 P

6 L

26 P

6

H H(21)

26 L

46

P

7

L

27

P 7 P H(21)

27

P

47 P

8 L

28 P 8 L H(21)

28 H

48 P

9

L

29

P

9 P H

29 H(23)

49 P

10 H

30

H

10

L

L

30 P

50

P

11

H 31 H 11

H P 31 P

51 P

12 H

32 L

12

P H

32 L

52

P

13 H

33

H

13 L

H 33 L

53

P

14

H

34 H 14 H H

34

H

54 P

15

H

35

L

15

H

L

35 H(10) 55 P

16 H

36

L

16

H H

36

H

56 P

17 H

37 H

17 L

37

H

57

P

18

H

38

H

18

H 38

H

58

P

19 H

39 H 19

H 39 H

59 P

20

H

40

L

20

P 40

H

60

P

PIN

IC

PIN

IC PIN IC

PIN IC

PIN

IC

PIN IC

NO.

6 NO. 6 NO.

7

NO.

7 NO.

8 NO.

8

1

*

21 P

1

*

21

P

1

H

21 P

2 P

22

P

2

P

22

P

2 P

22

P

3 P

23

P 3 P

23

P

3

P

23

P

4 P

24

P

4

P 24 P

4

P

24

P

5

P

25

P 5 P

25

P

5

P

25 P

6

P 26

L

6 P 26 H

6

P

26 P

7 P

27

P

7

P

27

P

7

P

27 H

1

8 P

28

H

8

P

28

H

8 P

28 H

9 P

9

P

9 P

10

P

10

P

10

P

11 P

11 P

11 P

12 P

12

P

12

P

13 P

13 P

13 P

14 L

14 L

14 L

15 P 15 P

15 P

16 P

16

P

16

P

17 P 17 P

17 P

18 P

18 P

18 P

19

P 19 P

19 P

20 H(23)

20

H(23)

20

H(25)

18

LOGIC

CHARTS

PIN

IC

IC

IC

IC

IC

IC

IC

IC

IC

PIN

IC

i

NO.

9

10

11

12

13

14

15

16

17

NO.

17

1

P

L

L(27)

L

P

P

L

P

H

21

P

2

L

H

H(28)

L(23)

P

*(23)

P

L

P

22

p

3

L

H

H(28)

H

H

P

P

L

P

23

P

4

P

H

L(27)

L

L

P

P

P

P

24

P

5

L

H

L

H(3)

L(11) *(23)

P

L

P

25

p

6

L

H

H

L(3)

H(10) *(23)

P

L

P

26

p

7

P

L

L

L

L

P

P

P

P

27

P

8

L

L

L

L(3)

H

P

P

L

P

28

H

9

P

P

H

H(3)

L *(23)

P

P

P

10

L

H(23)

H

L(3)

L(2)

L

L

L

p

1!

L

H(25)

L

H(3)

H(1)

H(23)

P

L

P

12

P

H(26)

L

L(3)

H

*(23)

P

P

P

o

13

L

P

H

H(3)

L

P

P

L

P

13

14

L

P

H

H

H

P

P

L

L

Oi

15

16

H(9) P

*(23)

P

H(9)

P

M

H

H

*(23)

P

H

P

17

18

P

P

P

3

P

P

P

o

19

*(23)

P

p

o

20

H

H

P

m

r-

<

m

30

</>

PIN

IC

IC

IC

IC

IC

IC

IC

IC

IC

IC

iC

IC

o

z

NO.

18

19

20

21

22

23

24

25

26

27

28

29

w

1

2

L

P

*

*

H(23)

L

L

H

P

H

H(23)

L

fv»

P

H

*

L(23)

P

L

L

P

P

L(23)

L

(US

3

P

P

H

H(23)

P

L

H

L

p

#

p

!

4

H

H

L

L(23)

L(23)

H

*

H

H

H

L

P(24)

5

H

P

H

H(23)

*(23)

H

*

L

*

H

*(23)

H

6

7

P

P

P
L

L

P

H(23)

L

1.(23)

L

P

P

H

L

H

L

L

L

H
H

L(23)

L

H

H

8

H

H(25)

L

H(23)

L(23)

H

P

H

P

L

L(23)

L

9

H

P

H(23)

*(23)

P

P

P

H

*(23)

H

10

L(25)

H

H(23)

L(23)

P

P

P

H

L(23)

p

11

L(25)

H

H(23)

*(23)

P

P

P

P

*(23)

p

12

H(26)

L

H(23)

L(23)

P

P

L

H(23)

L(23)

P

13

14

15

H(25)

H

H

L

*

H(23)

H

*(23)

H

P

H

P

H

H
H

P

P

*(23)

H

P

P

16

H

P

H

P

H

S.

o

>

19

SWITCHES

AND

JUMPERS

DIP

SWITCH SETTINGS

"Caution": Do

not change

the Dtp

Switch

setting

when

tne printer

or connected computer

power Is "ON".

DSW1-1

If "ON"

the printer

will stop

printing

when It runs out

of paper.

If "OFF"

this

switch disables the

paper out

detector.

DSW1-2 If "ON" the

SELECT IN

signal of the

parallel Interface

Is held

low.

If "OFF" the

SELECT

IN

signal

Is controlled by host

computer

(when

High,

printer cannot

accept

data

)

DSW1-3

If "ON"

the

down load

character

definitions are Ignored and

the RAM Is used as

a print buffer.

If "OFF"

the down load

character definitions

are enabled and the

buffer Is

reduced

to

one line.

DSW1-4 If "ON" the

default line

spacing

Is set

to 1/6 Inch.

If "OFF"

the default

line

spacing Is set to 1/8

Inch.

DSW1-5 If "ON" Line

Feed Is required from

the

host computer.

If "OFF"

one Line Feed

Is auto-

matically performed

with every

carriage

return.

DSW1-6

If "ON" bottom

margin

Is not set

at

Power 0n

#

If "OFF"

bottom

margin Is

set to

one Inch.

DSW1-7 If "ON"

the default

pitch Is normal

Pica pitch

(10CPI).

If "OFF" the

default

pitch Is condensed

Pica

pitch (17CPI).

DSW1-8

If "ON"

the zeros will be

printed

without slashes.

If "OFF" the printer

will

print

slashed

zeros.

DIP

SWITCH

2

DSW2-1

If "ON"

the default

character style

Is

normal draft.

If

"OFF" the default

character

style

Is set

to

Near

Letter Quality.

DSW2-2

If "ON" the

printer emulates the

Epson

FX-85

printer

(Standard).

If "OFF"

the

printer

uses

the "IBM" compatible

mode.

DSW2-3

If

"ON"

and DSW2-2

Is

"OFF",

the

printer

emulates

IBM-P

(Proprlnter).

If "OFF"

and

DSW2-2

Is

"OFF",

the

printer

emulates

IBM-G

(Graphic

printer).

DSW2-4

This switch function depends

on the

setting

of Switch

DSW2-2. If DSW2-2 "ON":

DSW2-4

"ON"

sets MINIMUM line feed value

to

1/216

Inch,

DSW2-4 OFF

sets

MINIMUM

line feed

value

to 1/144

Inch.

If DSW2-2

Is

Character

Set

#1,

#2.

0FF:DSW2-4

OFF selects

"ON" selects

Character

Set

DSW2-5

If

"ON" the

print head will return

to

the

left margin

after the paper advance.

If

"OFF"

the print head

will not return to

the

left margin

after

the paper

advance.

DSW2-6

thru

2-8

will select

the default

International

character set.

See

Chart.

DIP Switch 1

DIP

Switch

2

The DIP

Switches

are

located

under

the

Printer Cover

Courtesy of Manufacturer

International

Character

Sets

SWITCH

USA

FRANCE

GERMANY

ENGLAND

DENMARK SWEDEN

ITALY

SPAIN

2-6

ON

OFF

ON

OFF ON

OFF

"ON

OFF

2-7

ON

ON

OFF

OFF

ON

ON

OFF

OFF

2-8

ON

ON

ON

ON OFF

OFF

OFF

OFF

20

BLOCK

DIAGRAM

o

•v

o

D
m

H
>

33

o

<
m

3D

w

o
z

to

w

IJ-KOS

XOCOt-

OO20.Z3I-UJQ:

21

FUSE

BOARD

O

.....

;

...

1*

, )

PARALLEL BUFFER

BOARD

22

CN2

mwM

.

o

O)

^1

o

D
m

m

>

30

=9

22

o

z

(/>

—

N

CO

8

Is!*

,

<

s

I

r-

CHASSIS-OVERALL

VIEW

23

LLCS

LED1

LE02

CONTROL PANEL

BOARD

24

PARTS

LIST

AND

DESCRIPTION

When

ordering

parts,

state

Model,

Part

Number,

and

Description

SEMICONDUCTORS

(Select

replacement

for

best

results)

ITEM

No.

D1,2

D3

D4

THRU

D7

D10

THRU

D16

D17.18

D19

THRU

D21

D22

THRU

D26

D27

D28

THRU

D32

D33,4

D35,6

DB1.2

IC1

IC2

IC3

IC4

!C5

IC6.7

MFGR.

PART

No./

TYPE

No.

CONTROL

BOARD

DSM1A1

08000040

1S1588

08000039

DSM1A1

08000040

DSM1A1

08000040

1S2076A

08000015

1S1588

08000039

DSM1A1

08000040

1S1588

08000039

DSM1A1

08000040

1S2076A

08000015

DSM1A1

08000040

S10VB10
08990210

3052V

SI

-3052V

08200093

M54610P

08200101

STAR-IFPH

08200073

74LS257A

74LS257

08210040

M51953B

M51953BL

08200109

D7810HG

UPD7810H

08220073

[UPD7810HI

TMM2063P-10

TMM2063P-150

08220103

NTE

PART

No.

NTE587

NTE587

NTE519

NTE519

NTE587

NTE587

NTE587

NTE587

NTE519

NTE519

NTE519

NTE519

NTE587

NTE587

NTE519

NTE519

NTE587

NTE587

NTE519

NTE519

NTE587
NTE587

NTE5312
NTE5312

NTE74LS257
NTE74LS257

NTE74LS257

ECG

PART

No.

ECG587
ECG587
ECG519
ECG519

ECG587
ECG587

ECG587

ECG587

ECG519
ECG519
ECG519

ECG519

ECG587

ECG587

ECG519

ECG519

ECG587

ECG587
ECG519
ECG519

ECG587

ECG587
ECG5312

ECG5312

ECG74LS257

ECG74LS257

ECG74LS257

TCE

PART

No.

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3

100/5

19

SK3985/5312
SK3985/5312

NOTES

o

o

a

m

S.

w

™I

30

3D

W

o

z

</>

—

To

SK74LS257

SK74LS257
SK74LS257

VERSIONS

1

AND

2

25

PARTS

LIST AND

DESCRIPTION

(Continued)

When

ordering

parts, state

Model,

Part Number, and

Description

SEMICONDUCTORS

(Select

replacement

for

best

results)

ITEM

No.

MFGR.

PART

No./

TYPE

No.

NTE

ECG

TCE

NOTES

PART

No.

PART

No.

PART

No.

iC8

TMS27128-20JL

TMS27I28AD-200

08220082

IC9

74LS257A

NTE74LS257

ECG74LS257

SK74LS257

74LS257

NTE74LS257

ECG74LS257

SK74LS257

08210040

NTE74LS257

EC674LS257

SK74LS257

IC10

74LS139

NTE74LS139

EC674LS139

SK74LS139

08210046

NTE74LS139

ECG74LS139

|

SK74LS139

IC11

74LS04

NTE74LS04

ECG74LS04

SK74LS04

08210002

NTE74LS04

ECG74LS04

SK74LS04

IC12

74LS05

NTE74LS05

ECG74LS05

SK74LS05

08210017

NTE74LS05

ECG74LS05

SK74LS05

IC13

74LS04

NTE74LS04

ECG74LS04

SK74LS04

08210002

NTE74LS04

ECG74LS04

SK74LS04

IC14

HD74LS374P

NTE74LS374

ECG74LS374

SK1918

74LS374P

NTE74LS374

ECG74LS374

SK1918

08210052

NTE74LS374

ECG74LS374

SK1918

IC15

HD74LS373P

NTE74LS373

ECG74LS373

SK74LS373

74LS373

NTE74LS373

ECG74LS373

SK74LS373

08210038

NTE74LS373

ECG74LS373

SK74LS373-

IC16

74LS257A

NTE74LS257

ECG74LS257

SK74LS257

74LS257

NTE74LS257

ECG74LS257

SK74LS257

08210040

NTE74LS257

ECG74LS257

SK74LS257

IC17

TMS27C256-20JL

27256-250

08220096

IC18

555D

NTE955M

ECG955M

SK3

564/95 5M

NE555

NTE955M

ECG955M

SK3564/955M

08210008

NTE955M

ECG955M

SK3564/955M

IC19

74LS00

NTE74LS00

ECG74LS00

SK74LS00

08210001

NTE74LS00

ECG74LS00

SK74LS00

IC20

M74LS123P

NTE74LS123

ECG74LS123

SK74LS123

74LS123

NTE74LS123

ECG74LS123

SK74LS123

08210059

NTE74LS123

ECG74LS123

SK74LS123

IC21

74LS32

NTE74LS32

ECG74LS32

SK74LS32

08210053

NTE74LS32

ECG74LS32

SK74LS32

IC22

74LS05

NTE74LS05

ECG74LS05

SK74LS05

08210017

NTE74LS05

ECG74LS05

SK74LS05

IC23

555D

NTE955M

ECG955M

SK3564/955M

NE555

NTE955M

ECG955M

SK3564/955M

08210008

NTE955M

ECG955M

1

SK3564/955M

IC24 74LS32

NTE74LS32

ECG74LS32

SK74LS32

08210053

NTE74LS32

ECG74LS32

SK74LS32

IC25

74LS00

NTE74LS00

ECG74LS00

SK74LS00

08210001

NTE74LS00

ECG74LS00

SK74LS00

IC26

74LS04

NTE74LS04

ECG74LS04

SK74LS04

08210002

NTE74LS04

ECG74LS04

SK74LS04

IC27

74LS139

NTE74LS139

ECG74LS139

SK74LS139

08210046

NTE74LS139

ECG74LS

1 39 SK74LS139

26

PARTS

LIST

AND

DESCRIPTION

(Continued)

When

ordering parts,

state

Model, Part

Number,

and

Description

SEMICONDUCTORS

(Sefect

replacement

for

best

results)

ITEM

No.

IC28

IC29

IC30

TA1

TA2.3

TR1

TR2

TR3

TR4

TR5

TR6

TR7,8

TR9

TRIO

MFGR.

PART

No./

TYPE

No.

SN74LS06N

74LS06
08210103
PMM8713
08200103
UPC339C

08220092

[UPC339C1

STA404A

07650017

UPA1436H

07650021

[UPA1436HJ

D1273Q

2SD

12730

2SD1273

07312731

D1593M

2SD1593M

2SD1593KL

07315931

C1740S

2SC1740S

2SC1740

07227853

A933S

2SA933S

2SA933

07011752

C1740S

2SC1740S

2SC1740
07227853

B825
2SB825

07108251

C1740S

2SC1740S

2SC1740

07227853

B825

2SB825

07108251

C1740S

2SC1740S

2SC1740

07227853

NTE

PART

No.

NTE834

NTE834

NTE56

NTE56
NTE56

NTE85

NTE85

NTE85
NTE85

NTE290A

NTE290A
NTE290A

NTE290A

NTE85

NTE85
NTE85
NTE85

NTE

197

NTE

197

NTE

197

NTE85

NTE85

NTE

85

NTE85

NTE

197

NTE

197

NTE

197

NTE85

NTE85
NTE85
NTE85

ECG

PART

No.

ECG834

ECG834

ECG56

ECG56

ECG56

ECG85

ECG85

ECG85

ECG85

ECG290A

ECG290A

ECG290A

ECG290A

ECG85

ECG85

ECG85

ECG85

ECG197

ECG

197

ECG197

ECG85
ECG85

ECG85

ECG85

ECG

197

ECG197

ECG

197

ECG85
ECG85
ECG85
ECG85

TCE

PART

No.

SK3

569/83

4

SK3569/834

SK9364/56

SK3896/26!

SK9364/56

SK3122

SK3122

SK3122
SK3122

SK9132

SK9132
SK9132
SK9132

SK3122

SK3122

SK3122
SK3122

SK3083/197

SK3083/197
SK3083/197

SK3122

SK3122

SK3122
SK3122

SK3083/197

SK3083/197

SK3083/197

SK3

1 22

SK3122
SK3122

SK3122

NOTES

o

-Si

o

a

m
r

z

30

—

.S

w

m

>

30

30

(/>

o

z

O)

—1

N>

W

27

PARTS

LIST

AND

DESCRIPTION

(Continued)

When

ordering

parts,

state

Model,

Part

Number,

and

Description

SEMICONDUCTORS

(Select

replacement

for

best

results)

ITEM

No.

MFGR.

PART

No./

TYPE

No.

NTE ECG

TCE

NOTES

PART

No.

PART

No.

PART

No.

TR11

B884

NTE262

ECG262

SK3897/262

2SB884

NTE262

ECG262

SK3897/262

07108841

NTE262

ECG262

SK3897/262

TR12

D1395

NTE2334

ECG2334

SK9475/2334

2SD1395

NTE2334

ECG2334

SK9475/2334

07313951

NTE2334

ECG2334

SK9475/2334

TR13

C1740S

NTE85

ECG85

SK3122

2SC1740S

NTE85

ECG85

SK3122

2SC1740

NTE85

ECG85

SK3122

07227853

NTE85

ECG85

SK3122

TR14

B884

NTE262

ECG262

SK3897/262

2SB884

NTE262

ECG262

SK3897/262

07108841

NTE262

ECG262

SK3897/262

TR15

D1395

NTE2334

ECG2334

SK94 75/2334

2SD1395

NTE2334

ECG2334

SK94

75/2334

07313951

NTE2334

ECG2334

SK9475/2334

TR16

C1740S

NTE85

ECG85

SK3

1 22

2SC1740S

NTE85

ECG85

SK3122

2SC1740

NTE85

ECG85

SK3122

07227853

NTE85

ECG85

SK3122

TR17

C2003K

NTE85

ECG85

SK9229/85

2SC2003K

NTE85

ECG85

SK92

29/85

2SC2003

NTE85

ECG85

SK92 29/85

07220031

NTE85

ECG85

SK9229/85

TR18 B825

NTE

197

ECG197

SK3083/197

2SB825

NTE

197

ECG

197

SK3083/197

07108251

NTE197

ECG

197

SK3083/197

TR19

C1740S

NTE85

ECG85

SK3122

2SC1740S

NTE85

ECG85

SK3122

2SC1740

NTE85

ECG85

SK3122

07227853

NTE85

ECG85

SK3

1 22

TR20

B884

NTE262

ECG262

SK3897/262

2SB884

NTE262

ECG262

SK3897/262

07108841

NTE262

ECG262

SK3897/262

TR21

D1395

NTE2334

ECG2334

SK94 75/2

334

2SD1395

NTE2334

ECG2334

SK94

75/2334

07313951

NTE2334

ECG2334

SK9475/2334

TR22 A933S

NTE290A

ECG290A

SK9132

2SA933S

NTE290A

ECG290A

SK9132

2SA933

NTE290A

ECG290A

SK9132

07011752

NTE290A

ECG290A

SK9132

TR23

C1740S

NTE85

ECG85

SK3122

2SC1740S

NTE85

ECG85

SK3122

2SC1740

NTE85

ECG85

SK3122

07227853

NTE85

ECG85

SK3122

TR24 B884

NTE262

ECG262

SK3897/262

2SB884

NTE262

ECG262

SK3897/262

07108841

NTE262

ECG262

SK3897/262

28

PARTS

LIST

AND

DESCRIPTION

(Continued)

When

ordering

parts,

state Model, Part

Number,

and

Description

SEMICONDUCTORS

(Select

replacement

for

best

results)

ITEM

No.

TR25

TR26

TR27 THRU TR29

TR30

ZD1

ZD2

ZD3

THRU ZD4

ZD5

ZD6 THRU

ZD10

ZD1I

IC1

IC2.3

IC4

IC5

IC6

D1

D2,3

IC1

MFGR.

PART

No./

TYPE

No.

01 395

2SD1395

07313951

C1740S

2SC1740S

2SC1740

07227853

B886

2SB886

07108861

D1195

2SD1195

07311951

RD4.3EB1

08020067

RD39FB1

08020059

RD4.7EB1

08020030
RD6.2EB3

08020029

RD24FB
08020037

RD24FB

08020037

PARALLEL

BUFFER BOARD

NTE

PART

No.

2764-250

2764

08220033

HM6264-150

6264

08220039

74LS42

08210004

UPD7801

08220048

tuPD78011

M54610P

08200101

SERIAL BUFFER BOARD

1S1588

08000001

DS446

08000028

2764-250

2764

08220033

NTE2334

NTE2334

NTE2334

NTE85

NTE85

NTE85

NTE85

NTE264

NTE264

NTE264

NTE261

NTE261

NTE261

NTE5008A

NTE5008A

NTE5009A

NTE5009A

NTE5013A
NTE5013A

NTE5081A

NTE5081A

NTE5081A

NTE5G81A

NTE2764
NTE2764

NTE2764

NTE74LS42

NTE74LS42

NTE519

NTE519

NTE519

NTE519

NTE2764

NTE2764
NTE2764

ECG

PART

No.

ECG2334

ECG2334

ECG2334

ECG85
ECG85

ECG85

ECG85

ECG264

ECG264
ECG264

ECG261

ECG261

ECG261

ECG5008A

ECG5008A

ECG5009A

ECG5009A

ECG5013A
ECG5013A

ECG5081A
ECG5081A
ECG5081A
ECG5081A

ECG2764

ECG2764
ECG2764

ECG74LS42

ECG74LS42

ECG519

ECG519

ECG519

ECG519

ECG2764

ECG2764
ECG2764

TCE

PART

No.

SK94

75/2 334

SK94

75/2334

SK9475/2334

SK3122

SK3122

SK3122

SK3

1 22

SK3 181 A/264

SK3

181 A/264

SK3 181 A/264

SK3896/261

SK3896/261

SK3896/261

SK4A3/5008A

SK4A3/5008A

SK4A7/5009A

SK4A7/5009A

SK6A2/5013A

SK6A2/5013A

SK24V/5081A
SK24V/5081A
SK24V/5081A
SK24V/5081A

SK74LS42
SK74LS42

SK3100/519

SK3 100/5 19

SK3

100/5 19

SK3

100/5

19

NOTES

VERSION

3

ONLY

o

-4

o

D
m
r

z

30

S.

v>

m

>

30

30

O)

29

PARTS

LIST

AND

DESCRIPTION

(Continued)

When

ordering

parts,

state

Model,

Part

Number,

and

Description

SEMICONDUCTORS

(Select

replacement

for

best

results)

ITEM

No.

IC2

IC3

IC4

IC5

MFGR.

PART

No./

TYPE

No.

08220073

7810H

IC6

74LS04

08210002

IC7

74LS00

08210001

IC8

75188

08210047

PCI

PS

240

1-2

08300032

TR1

C2785

2SC2785

07227851

TR2

D863

2SD863

07308631

TR3

C3331

2SC3331

2SC3330

07233301

ZD1

RD13EB3
08020028

74LS373

08210038

75189

08210048

HM6264-150

6264

08220039
UPD7810H

NTE

PART

No.

NTE74LS373
NTE74LS373
NTE75189

NTE75189

NTE74LS04
NTE74LS04

NTE74LS00

NTE74LS00

NTE75188
NTE75188

NTE85

NTE85

NTE85

NTE382
NTE382
NTE382

NTE293

NTE293

NTE85

NTE85

NTE5022A

NTE5022A

ECG

PART

No.

ECG74LS373
ECG74LS373

ECG75189

ECG75189

ECG74LS04

ECG74LS04

ECG74LS00

ECG74LS00

ECG75188

ECG75188

ECG85

ECG85
ECG85

ECG382

ECG382

ECG382

ECG293

ECG293

ECG85
ECG85

ECG5022A
ECG5022A

TCE

PART

No.

SK74LS373

SK74LS373

SK5

189/75

189

SK5

189/75

189

SK74LS04

SK74LS04

SK74LS00
SK74LS00

SK5188/75188

SK5188/75188

SK3124A/289A
SK3124A/289A
SK3124A/289A

SK9137/382

SK9

137/382

SK9137/382

SK3849/293

SK3849/293

SK92

29/85

SK9229/85

SK13A/5022A

SK13A/5022A

NOTES

PRINTER

SELF

TEST

Printer

has

a short

and

a

long

Self-Test.

Short

Self-Test

prints

six

lines

of

80-column

text

In

Draft

mode,

then

stops.

Short

test

Is

started

by

loading

paper

and

closing

the

cover,

then

holding

ON

LINE

button

down

while

turning

Printer

On.

Long

Self-Test

prints

80-column

text

In

Draft

and

Near

Letter

Quali-

ty

modes

In

both

Standard

Roman

characters

and

Italic

characters.

The

long

test

Is

started

by

holding

PAPER

FEED

button

down

while

turn-

ing

Printer

On.

The

long

test

continues

printing

until

Printer

Is

turned

Off.

30

PARTS

LIST

AND

DESCRIPTION

(Continued)

When

ordering

parts,

state

Model, Part

Number, and

Description

ELECTROLYTIC

CAPACITORS

ITEM

No.

RATING

MFGR.

PART

No.

CI,

C3

CONTROL BOARD

10000 50V

10000

16V

05051091

05021091

Items

Not

Listed

Are

Normal

ly

Available

At

Local

Distributors.

CAPACITORS

ITEM

No.

RATING

MFGR.

PART No.

CI

C2,3

FUSE

BOARD

.22 250VAC

.0022 400VAC

05292243

05192223

ITEM

No.

RATING

MFGR.

PART

No.

C49

C65
C67
CA2

CONTROL

BOARD

.0047

100V

2%

.0047

100V

2%

.047

100V

2%

Capacitor

Array

lOOpF

X 8

05294721

05294721
05294731

05651012

Items Not

Listed

Are

Normally

Available

At

Local Distributors.

o

o

o
m

<

m

en

>

30

RESISTORS

(Power and Special)

REPLACEMENT DATA

ITEM

No.

RATING

MFGR.

PART No.

NTE

PART

No.

CONTROL

BOARD

R3

1000

5%

3W

Metal

Oxide

06231023

3W210

R25

680

2%

2W Metal Oxide

06206811

R45

59K

Vf,

1/6

Carbon

Film

06255931

R49

680

2%

2W Metal Oxide

06206811

R51

510

2%

1/6W

Carbon

Film

06055115

R63

59K

2%

1/6W

Carbon Fi

Im

06255931

R65,6,7

3300

2%

1W Metal

Oxide

06213321

R75

3000

2%

1/6W Carbon Film

06053024

R80.1 3000

\%

1/6W Carbon

Fi Im

06253021

R82

2700

\%

1/6W Carbon Fi Im

06252724

R83 3000

1?

1/6W Carbon Film

06253021

R84

43K

2%

1/6W

Carbon

Fi

Im

06054334

R85

10K

2%

1/6W Carbon

Film

06051035

R86

2000 ]%

Carbon

Fi

Im

06252021

R87

3000

1%

1/6W

Carbon Film

06253021

R88

680 2%

2W Metal Oxide

0620681

RA1

Resistor Array

10K X 8

06581032

RA2 Resistor Array

10K

X

6

06581034

RA3.4 Resistor Array

10K X

8 06581032

RA5 Resistor Array

2200 X 4 06582221

RA6 Resistor Array

10K X

8 06581032

RA7 Resistor Array

1000 X 9

06581022

CO

JO

w

31

PARTS LIST

AND

DESCRIPTION

(Continued)

When ordering

parts, state

Model, Part

Number, and

Description

MISCELLANEOUS

ITEM

No.

CM1

Ml

M2

M3

M4

PI

PHI

SW1

T1

BZ1

DSW1.2

F1

F2
F2

F3,4

F5

XTAL1

LED1

LED2

LED

3

LED4

LED5

LED6

LED

7

LED8
LED9

SW1

SW2

SW3

SW4
SW5

SW6

SW8

F1

LI

X-TAL

DSW1

LI

thru

L5

T1

X-TAL

PART NAME

CHASSIS

Carriage

Motor

Switch

Switch

Switch

Switch

AC Cord

Print Head

Switch

Power

Transformer

Fan

CONTROL

BOARD

Buzzer

Switch

Fuse

3

Amp

8

125V

5

Amp

6

125V

Fuse

Fuse

Fuse

3

Amp

6

125V

Fuse

3

Amp

@

125V

Crystal

CONTROL

PANEL

BOARD

LED
LED

LED

LED

LED
LED

LED

LED
LED

Switch

Switch

Switch

Switch

Switch
Switch

Switch

FUSE

BOARD

Fuse

5

Amp

6

125V

4

Amp

S

250V

Line Fi

Iter

(

1.3mH)

PARALLEL

BUFFER

BOARD

Crystal

SERIAL

BUFFER

BOARD

Switch

Ferrite Bead

Transformer
Ceramic

Osci

I lator

MFGR.

PART No.

89150010

87277010

45060201

09090018

09990027

09990034

09990051

09990037
09990027

09990027

08300027

08300028

08300027

08300027

08300027

08300027

08300027

08300027

08300027

09051001

09010037
09010037
09010037

09010037

09010037

09040011

09990037

09990047

09251103

09250010

09090018

09990706

09240030

09250016

NOTES

Home Position

Sensor

Paper

End

Sensor

Release

Lever

Automatic

Sheet

Feeder

Polari zed

DP8105

Power

QMB-11P

DIP

Versions

2,3

Version

1

Used

220V, EC

Used

220V

Except,

EC

Versions

2,3

14MHz

Power,

Green

PE,

Red

Draft,

Green

NLQ, Green

Prop,

Green

80,

Green

96,

Green

137,

Green

On Line,

Green

Form

Length

Mode

Print

Pitch

T0F

Paper Feed

On

Line

Cover Open

Detector

220V/240V

Model

4MHz

DIP

7.37MHz

32

Connector

Signals and Functional

Description

Parallel interface (Optional)

Pin No.

Signal

Name

Direction

Function

1

STROBE

IN

Signals

when

data is ready to be read.

Signal

goes

from

HIGH to LOW

(for at least

0.5

microseconds)

when

data is

available.

2

DATAl

IN

These signals

provide

the information

of the first

to

eighth bits of

parallel

data.

Each signal is

at HIGH level

for

a

logical

1 and at

a LOW level

for

a logical 0.

3 DATA2

IN

4

DATA3

IN

5 DATA4

IN

6

DATA5

IN

7

DATA6

IN

8

DATA7

IN

9 DATA8

IN

10 ACK

OUT

A LOW pulse

acknowledges

receipt

of

data.

11

BUSY

OUT When

this signal

goes

LOW

the printer

is ready to

accept data.

12 PAPER

END

OUT

This signal is

normally LOW.

It will

go HIGH

if the

printer runs

out of paper. This

signal

can

be held LOW

permanently

by turning

DIP

switch

1-1

off.

13 SELECTED

OUT

This signal

is HIGH when the

printer

is on-line.

14-15

N/C

Unused

16

SIGNAL

GND

Signal

ground.

17

CHASSIS

GND

Printer's

chassis ground,

isolated

from

logic

ground.

18 +

5VDC

OUT

External supply of

+

5VDC.

19-30

GND

Twisted

pair return signal

ground

level.

31

RESET

IN

When

this signal goes LOW

the

printer is reset to its power-on

condition

32

ERROR

OUT

This signal is normally

HIGH. This signal goes

LOW to

signal

that

the printer

cannot

print due to an error condition.

33

EXT GND

External

ground.

34-35

N/C

Unused.

36 SETECTTN

IN

Data entry

to the

printer is possible only when

this level

is

LOW.

o

o

o

o
m

Connector

Signals and

Functional Descriptions

Serial

interface (Optional)

Pin No.

Signal

Name

Direction

Function

1

GND

-

Printer's chassis ground.

*)

TXD OUT

This pin carries

data from

the printer.

3 RXD

IN

This pin carries

data to the printer.

4

RTS

OUT This

is Space

when

the printer

is ready to

receive

data.

5

CTS IN

This pin is

Space

when

the computer is ready

to send data.

6 DSR

IN

This pin is Space when

the computer is ready to

send data.

This printer

does not

check this pin.

7

GND

-

Signal ground.

8 DCD

IN This pin is

Space when

the computer is ready to send data.

This

printer does not check this

pin.

9

TTY TXDR

-

This pin

is the return path for

data transmitted from the

printer

on the

20mA current loop.

10 TTYTXD

OUT

This pin carries data from the

printer on the 20mA current loop.

II

RCH

OUT

This is the signal line for the serial

busy protocols.

This pin goes

Mark when

printer's buffer fills,

and Space

when

the

printer is ready

to receive

data. In the busy protocols

this line carries the

same signal

as pin 20.

12

N'C

Unused.

13

GND

-

Signal ground.

14-16

N/C

Unused.

17 TTY

TXDR

—

This

pin is the

return path for data transmitted from

the printer

on the 20mA current

loop.

18

TTYRXDR

-

This pin is the

return path for data transmitted

to the printer

on

the

20mA current

loop.

19 TTY RXD

IN

This pin carries data to the printer

on the 20mA

current loop.

20 DTR

OUT

The printer

turns this pin Space when

it is

ready to receive

data.

21-22

N/C

Unused.

23 TTYRXDR

—

This

pin is the return

path for data transmitted to the printer on

the

20mA current loop.

24

TTYTXD

OUT

This pin carries

data from the printer on the 20mA current loop.

25

TTY

RXD

IN

This pin

carries data to the printer

on the 20mA

current loop.

o

</>

<

-1

m

>

39

33

(/>

o

z

(/>

-1.

to
CO

Courtesy

of Manufacturer

33

TERMINAL

GUIDES

CONTROL

BOARD IDENT

601

I

CI

FRONT VIEW

i c

2

C

3 1=

4

C

s

c

B

1=

7 C

B C

3 C

IOC

11 C

I2C

13C
14C

ISC

1BC
17C

1BC

ISC

20C

21

C

3

42

13

41

3

40

339
338

337

3

36

3

35

3 34

333

332

3 31

330
329
328

327

326
325

3

24

323

322

11=

=316

2d

15

3d

314

4C=<

13

5d bi2

SC =311
7C

10

Be =39

IC3.IC9.IC10

C16,

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13 C

14

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17

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19 C
20 C

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23 C
24 C

25

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26C

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TR14.TR15

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TR24.TR25

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VIEW

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VIEW

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TR2.TR3

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VIEW

1

C

2 C

3 C

4

C

s c
6 C
7

C

a c
9

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11

c

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13

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TOP

C5

VIEW

34

1.

NR-10

Printer

1-1.

The Printer

Assembly

1-1-1.

Disassembly

Drawing

o

o

^1

3

o

a

m
r

z

30

m

£

30

33

W

jo

w

Courtesy of

Manufacturer

35

1-1-2.

Parts

List

Drwg.

No.

10

II

12

13

14

15

16

17

19

20

21

22

23

24

25

26

27
28

Parts

Name

Printer

Mechanism

DP811

Print

Head

DP8101

Lower

Case

Fuse

Board

Unit

(For

120V)

Fuse

Board

Unit

(For

220V,

Hong

Kong)

Fuse

Board

Unit

(For

220V,

EC)

Fuse

Board

Unit

(For

240V,

without

Plug)

Lower

Case

Chassis

Fan

Unit

Connector

Cover

Control

Logic

Board

(For

220V,

EC)

Control

Logic

Board

(Except

for

220V,

EC)

Transformer

(For 120V)

Transformer

(For

220V)

Transformer

(For

240V)

Upper

Case

Unit

Wire

18UL2.

1

3GN/Y60TS

Platen

Knob

Paper

Guide

Parallel

Interface

Board

Interface

Cover

Printer

Cover

Ink

Ribbon

Cartridge

Lever

Sheet

Ground

Contact

Plate

Coller

Screw

with

Notched

Washer

M3

x

5

Tapping

Screw

M3

x

8

Tapping

Screw

with

Flange

M3

x

10

Screw

with

Notched

Washer

M4

x

5

Screw

M4

x

10

Screw

with

Notched

Washer

M4

x

10

Screw

with

Notched

Washer

M4

x

Insulation

Sheet

Parallel

Buffer

Board

(Option)

Serial

Buffer

Board

(Option)

Automatic

Sheet Feeder

SF-10D

(Option)

Sub-Cassette

Ribbon

(Option)

Printer

NR-10

Parts

No.

89122010
89150020

83022740
87273020
87273040

87273130
87273050

82010620
87277010
83910810

87272040

87272020
09240075

09240071

09240073
87270040
80924270

83901171

87276020

87284010

83021880

83021860

80980361

80991242
82500460

82200080
01903026

00930803

01903038

01914014

01604100

01914021

01914010

80991530
87289070
87289080

89590010

80980380

Q'ty

Courtesy

of

Manufacturer

'M

1-2.

Printer Mechanism

DP811

1-2-1.

Disassembly

Drawing

o

3

o

o
m

r~

z

3D

I

s

l

3D

3D

O

Z

(A

—

JO

u

Courtesy

of

Manufacturer

37

1-2-2.

Parts

List

Drwg. No.

38

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26
27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

Parts

Name

Frame

Unit

Carriage

Stay

(1)

Unit

Carriage

Unit

Bail

Roller

Unit

Holder

Shaft

Unit

Paper

Chute

Unit

Platen

Unit

Tractor

Unit

Carriage

Motor

Holder

Carriage

Motor

Unit

Paper

Feed

Motor

Unit

Paper

Feed

Motor

Holder

Idler

Gear

Gear(l)

Adjustment

Bushing

Bail

Lever

Switch

Base

ASF

Detector

Detector

Unit

Adjusting

Plate

Unit

B

Mini

Clamp

Platen

Holder

L

Release

Lever

Bail

Drive

Plate

A Ass'y

Bail

Drive

Plate

B

Ass'y

Release

Cam

Follower

Unit

Adjustment

Lever

Holder

Lever

Gear

(2)

Bushing

Collar

PF

Tension

Lever

Spring

Bail

Lever

Spring

Stop

Ring

SE2

Stop

Ring

SE3

Stop

Ring

SE4

Stop

Ring

SE5

Stop

Ring

SE6

PEM

Spacer

Nut

with

Notched

Washer

N4

Nut

with

Flange

N4

Screw

Ml.

6 x

6

Tapping

Screw

Ml.

x

7

Screw

M3

x

3

Printer

Mechanism

DP81

Parts

No.

87120060

87127010

87122080
87127030

87127020
87124010
87123010
87126010

80991440

87128360

87101020
82090560

83100420
83100110
83900990

82400801
83901081

87125350
87125910

87128120

04991222

83200521

83400361

87129310
87129320

87129010

82400891

83400342

83100440
83200490

82200010

80510570

80510590

04020010

04020015
04020016
04020017
04020014

81220150

02040403

02040402

00716604

01901602
00630304

Courtesy

of Manufacturer

Q'ty

Drwg.

No.

45

46

47

48

49

50

Printer

Mechanism

DP8

1

Parts

Name

Screw

M3

x

4

Screw

M3

x

5

Screw

Mi

x

6

Screw with

Spring

Washer

M3

x

6

Screw

with

Flange

M3

x

10

Wire

18UL2.13G/Y80

Fastener

Parts

No.

00630404

00630504

00830604

01903018
01903035

80822020

04991204

Q'ty

SERIAL

INTERFACE

BOARD

4-3.

DIP

Switch

Settings

Switch

1

Table

1-3.

DIP

switch

on

serial board

ON

7

data bits

Parity checked

OFF

8 data

bits

No

parity

Handshaking

protocols

-

see

Table

1-4

Odd

parity

Even

parity

Data

transfer

rate

-

see Table

1-5.

Table

1-4.

Handshakiag

protocols

Protocol

Switch

3

Switch

4

Serial

busy,

1

byte

mode

OFF

OFF

Serial

busy,

1

block

mode

ON

OFF

ACK

mode

OFF

ON

XON/XOFF

mode

ON

ON

o

o

£

o

o
m

<

rn

52

6
z

H
>

33

Table 1-5.

Date

transfer

rates

Baud

rate

Switch

6

Switch 7

Switch

8

150

OFF

OFF

OFF

300

OFF

OFF

ON

600

OFF

ON

OFF

_j

1200

OFF

ON

ON

2400

ON

OFF

OFF

4800

ON

OFF

ON

9600

ON

ON

OFF

19200

ON

ON

ON

Courtesy of Manufacturer

39

1-3.

Sub-

Assembly

1-3-1.

Carriage

Unit

Drwg.

No.

Parts

Name

Parts

No.

Q'ty

3-1

Ribbon

Guide

82900571

l

3-2

Card

Holder

83901041

l

3-3

Rear

Slider

83901020

l

3-4

Carriage

Ass'y

87122330

l

3-5

Timing

Belt

80902040

1

3-6

Tapping

Screw

M2.6

x

5

01902609

2

3-7

Tapping

Screw

M2

x

4

01902028

1

3-8

Ground Plate

B

82500750

1

Courtesy

of

Manufacturer

40

1-3-2.

Tractor

Unit

o

O)

^1

s

O

o

m

o

en

s

l

33

3J

W
o

z

W

w

Drwg. No.

Parts Name

Parts

No.

Q'ty

8-1

Tractor R Ass'y

(Includes

Drwg. No.

8-5,

10)

87126310

8-2

Tractor L

Ass'y (Includes

Drwg. No.

8-5,

10)

87126320

8-3

Tractor Shaft

Ass'y

87126330

8-4

Tractor

Stay

81370402

8-5

Sprocket

Wheel

83120301

2

8-6

Clamp Lever

R

83400311

8-7

Clamp

Lever L

83400321

8-8

Sheet Guide

83901000

8-9

Sheet Guide

Bushing

83200150

8-10 Tractor

Spring

80510551

2

8-11

Stop

Ring SE5

04020017

2

Courtesy of

Manufacturer

41

1-3-3.

Upper

Case

Unit

10-8

Drwg. No.

Parts Name

Parts No.

Q'ty

10-1

Switch

Actuater

83900600

5

10-2

Switch Knob

83200570

10-3

Upper Case

83021840

10-4

Control Panel

Board

(Includes

Drwg. No. 10-5,

6, 10)

87270320

10-5

Switch Fitting

82090692

10-6

Cover

Open Detector

09040011

10-7 Operation Sheet

80085350

10-8

Brand

Name

Plate

80080500

10-9

Board

Bushing

83200550

4

10-10 Screw Ml. 6

x

6

00716604

10-11

Tapping

Screw M3

x

8

00930803

10-12 Tapping

Screw M3

x

12

01903047

4

Courtesy

of

Manufacturer

42

SCHEMATIC NOTES

,

Circuitry

not

used In

some versions

—

Circuitry used

In some

versions

•

See parts 1 1st

+•

Ground

"»

Chassis

*7

Common tie

point

Waveforms

and voltages

taken

from ground, un-

less

noted otherwise.

Item

numbers In

rectangles

appear In the

align-

ment/adjustment

Instructions.

Resistors

are 1/2W

or less,

5%

or

greater,

unless

noted.

Value

In (

) used In

some

versions.

Measurements

with switching

as

shown, unless

noted.

Supply

voltage

maintained as

shown at

Input.

Voltages

measured

with digital

meter.

Logic

Probe Display

L

=

Low

H

=

High

P

=

Pulse

*

=

Open (no

lights On)

Logic

Probe

Indicates:

Controls

adjusted for

normal operation.

Terminal

Identification may not

be found

on

unit.

Capacitors are 50 volts

greater, unless

noted.

Electrolytic

Capacitors are

5$

or

greater, unless

noted.

or less,

5%

or

50 volts or less,

Waveforms

taken

with

triggered scope

and

Sweep/Time switch In Calibrate position,

scope

Input set for

DC

coupling on reference

volt-

age

waveforms. Switch to

AC

Input to

view

waveforms after DC

reference

ts

measured

when

necessary.

Each waveform Is 10cm. width

with

DC reference voltage given at the

bottom line

of

each waveform.

Readings

taken

during

"Long

Self Test"

(See

General Operating

Instruc-

tions) unless otherwise noted.

Assembly

Is In Home

paper

head

(1) L during

Line Feed.

(2)

H during Line Feed.

(3) P during

Line Feed.

(9) P when Printer

ts On Line.

(10)

L

when Carriage

Assembly

position.

(11) H

when

Carriage

position.

(21)

Changes

state

when

next

phase of

feed

Is activated.

(22)

H

when

carriage

active

and

Inactive.

(23)

P

when prlnthead

active.

(24)

L when

carriage

moves

Left, H

carriage

moves

Right.

(25)

P

during

second

pass of

first

NLQ I

and

both

passes

of

remaining

NLQ.

(26)

P during

one of

two

passes

per NLQ

line.

(27)

H

during

draft

quality.

(28)

L during

draft

quality.

o

O)

when

Ine

ts In

Home

LINE

DEFINITIONS

2

o

D

m

r
z

30

S.

w

m

£

30

33

W
O

Z

CO

—

jo

w

AO THRU

A15

ADDRESS

BITS THRU

15

ACK

ACKNOWLEDGE

AN4

ONLINE

SWITCH

STATUS

AN5

COVER

OPEN SWITCH

STATUS

BUSY

BUSY

C-BUSH

BUSY

CBUSY

BUSY

CE22

CHIP ENABLE

CK

CLOCK

TIMING

PULSE

CLR

CLEAR

CS1

CHIP

SELECT

CS2IN

CHIP

SELECT

2 INPUT

CS20UT

CHIP

SELECT

2 OUTPUT

CTS

CLEAR TO

SEND

DO

THRU D7

DATA BITS

THRU 7

DATA

1

THRU

DATA

8

DATA BITS

1 THRU

8

DATA1

THRU DATA8

DATA BITS

1 THRU

8

Dl

1

THRU

D18

DATA

BITS 1 THRU

8

DOUT

DATA OUT

DTR

DATA

TRANSMIT

READY

ERR

ERROR

ERROR

ERROR

FWR

WRITE

IN-PRIME

INPUT

PRIME,

CLEARS MEMORY

INPUT

PRIME

INPUT

PRIME, CLEARS

MEMORY

NMI

NON-MASKABLE

INTERRUPT

ONLINE

ON LINE

PA1 THRU PA7

PORT A BITS 1 THRU 7

PAPER END

PAPER

END

SENSOR

PBO THRU PB4

PORT

B BITS

THRU 4

PB6

.PORT B BIT 6

PB7

PORT B BIT 7

PCO

PORT C BIT

PC4

PORT

C

BIT 4

PC6

PORT C

BIT 6

PC7

PORT

C

BIT 7

PE

PAPER

EMPTY

SENSOR

RD

READ

RD/OE

READ/OUTPUT ENABLE

RES

RESET

RESET

RESET

RTS

READY TO SEND

RXD

RECEIVE DATA

SEL-IN

SELECT INPUT

SELECT-IN

SELECT

INPUT

SELECTED PRINTER

ON LINE STATE IN EFFECT

SLCT

SELECT

STB

STROBE

STROBE STROBE PULSE FOR

READY IN

DATA

TXD TRANSMIT

TXDR

TRANSMIT DATA

WR WRITE

WR/WE

WRITE/WRITE ENABLE

43

CONTROL

BOARD-GridTrace

LOCATION

GUIDE

BZ

B-26 D3 B-28

R1

1-6 R79

0-13

CI

Q-8

D4

F-10

R2

H-7

R80

0-14

C2

N-8 D5 F-10

R3 0-7

R81

0-15

C3

L-7

D6

F-10

R4

F-6

R82

0-17

C4

L-5

D7

G-10

R5

D-3

R83 0-17

C6

K-6

D10

G-12

R6

A-15

R84

R-15

C7

1-7

D11

H-11

R7 B-28

R85 R-15

C8

L-9

D12

1-10

R8 B-28

R86

R-17

C9

G-7 D13

1-10

R9

C-7

R87 R-17

CIO B-4

D14

J-10

R10

C-8

R88 R-13

C20

A-14

D15

K-10

R11 C-11

R89 R-15

C21

A-17

D16

K-10

R12

C-12

RA1

B-16

C22 B-18

D17

L-10

R13

C-17

RA2 A-23

C23 B-21

D18

L-11

R16 C-21

RA3 B-22

C24 B-21

D19

J-21

R17

C-21

RA4 E-28

C25

B-21

D20

L-14

R18

C-25

RA5 1-15

C26

A-25

021

L-21

R19

D-9

RA6 1-28

C27

A-26

D22

N-26

R21

E-6

RA7

L-26

C28

A-27

023

N-26

R22

E-7

TA1

H-11

C29

C-10

D24

N-25

R23

E-8

TA2

L-25

C30

D-19

D25

N-26

R24

E-9

TA3

N-23

C34

E-13

D26

N-26

R25

E-9

TR1

1-5

C35

E-17

027

P-14

R26 F-10

TR2

H-5

C36

F-13

D28

0-24

R27

E-12

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