Star NX-1001, LC-20 Technical Manual

DOT MATRIX PRINTER

NX-1001

LC-20

TECHNICAL MANUAL

[ SIXTH EDITION ]

NOTICE

• All rights reserved. Reproduction of any part of this manual in any

form whatsoever, without STAR’s express permission is forbid­den.

• The contents of this manual are subject to change without notice.

• All efforts have been made to ensure the accuracy of the contents

of this manual at the time of going to press. However, should any
errors be detected, STAR would greatly appreciate being in­formed of them.

• The above notwithstanding, STAR can assume no responsibility

for any errors in this manual.

© Copyright 1990-1997 Star Micronics Co.,Ltd.

INTRODUCTION

This manual is an introduction to dot matrix printers as shown below.
It is intended for use as a reference for periodic inspections and maintenance procedures.
This manual is prepared for use at a technical level and not for the general user.

1

Model Destination

NX1001 MULTI-FONT For American, Asian, and Russian market
LC-20 For European and Pacific market

This manual is divided into the following sections:

•

Chapter 1 General Specifications
Chapter 2 Theory of Operation
Chapter 3 Adjustments
Chapter 4 Parts Replacement
Chapter 5 Maintenance and Lubrication
Chapter 6 Troubleshooting
Chapter 7 Parts List

First edition : Jul. 1990

•

Second edition : Feb. 1991
Third edition : Mar.1993
Fourth edition : Aug.1994
Fifth edition : Aug.1996
Sixth edition : Aug.1997

2
3
4
5
6
7

(Blank Page)

C 1

Se

Si

G S

1.

GeneralSpecifications

2. ExternaiAppearanceandComposition

2 N o P
2

2 CoP Co. . . . . . . . . . . . . . . . . . . . . . . . . ...

3.

3 GeSpe. . . . . . . . m..m..

3 Con. . . . . . . . . . u-.-..

4 Ser(o

4
4 Co

D S

Paraiieiinterface

GeSpe

DiSe

4

....................................................................................................

.........................................................................................

..............................................................

........................................................................................................

. - . ----

........................................................................................

............................................................................................

a FuDe...

...............................................................................................

3

5
5

8

9
9

10

I

GENERAL SPECIFICATIONS

1. General Specifications

Pr

Printingmethod
Piintingspeed

Databuffer

Paperfeed

Printingdirection

Characterset

Standardcharacterset
IBMcharacterset
Downloadablecharacters
Internationalcharactersets”’

Dotmatrixsize

Charactermatrix

Normal

Double
High-speeddouble
Quadruple
CRTI
CRTII
Plotter

Double-plotter
Linespacing
Columnwidth

InthecaseofRussianversion,theinternationalcharactersetsareehmmated.

*1

Serialimpactdotmatrix

150characterspersecond(in Draft pica)

37.5charactersper second(inNLQpica)
4Kbyteswhennotusedfordownloadcharacters

l-Linebufferwhenusingdownload

2.8inches/second(duringpagefeed)
Frictionandpush-tractorfeed

Draft:bi-directionalor unidirrxxional(selectable),logicseeking
NLQandgraphics:unidirectional,logicseeking

96ASCIIcharacter
244characters(ASCII,internationalcharacters,symbols,blockgraphics)
Max.192(draft)or74(NLQ)

14sets(USA,France,Germany,England,DcnmarkI,DenmarkII,Sweden,Italy

SpainI, SpainII,Japan,Norway,LatinAmerica,Denmark/Norway)

9 x 11(Draft)

18X23(NLQ)

DPI
(8or9) x480 60
(8or9) x960 120
(8or9) x960 120
(8or9) x 1920 240
(8or9) x640 80
(8or9)x 720 90
(80r9) x576 7
(8or9) x 1152 144

1/6inchstandard

80,normalpica

137,condensedpica

1/8,nf72,orn/216inchprogrammable

96,normalelite

160,condensedelite

.. . .

P

Singlesheets

Fanfoldpaper

5.5- 8.5incheswide 0.07-0.10 mmthick

4-10 incheswide 0.07-0.10 mmthick(single-ply)
Max,0.28mmthick(3-ply)

-3-

GENERAL SPECIFICATIONS

Pr

Dimensions

Weight
Power

Powerconsumption
Environment

Print head

Ribbon

Option

Pain

Interface
Synchronization
Handshaking
Logiclevel
Connector I 57-30360Am~henol

Height120mm(4.7inches)
Depth301mm(11.8inches)

5.1kg (11.2pounds)
120VAC*1O%,60 Hz.

240VAC+1O’%,50/60Hz.
Typ.36W.Max.80W
Operatingtemperature:5 to 40”C(41to I04”F)

Operatinghumidity:10to 80%,noncondensation
Storagetemperature:–30to 65°C(-22 to 149°F)
Storagehumidity:10%to 95%(at40°C)(nocondensation)

9 pins
Life:100milliondots

Fabricribboncartridge
Life:1milliondraftcharacters

Automaticsheetfeeder
Serial-Parallelconverter(SPC-8K)

Centronics-compatible
Byexternalsuppliedstrobepulses
ByACKor BUSYsignals

Width396mm(15.6inches)

220VAC+1O%,50/60Hz.

%

I

I

Fig. 1-1ExternalDimensions

–4-

I

“a’enK

GENERAL SPECIFICATIONS

External Appearance and Composition

2.

N P

2

P C

R C

B L

/ L

‘ C

Fig. 1-2FrontViewofthePrinter

P M

-

I C

a L

Fig.1-3DiagramofInternalComposition

-5-

GENERAL SPECIFICATIONS

2 S S

\

/

I

1

Fig. 1-4TheDIPSwitchesarelocatedunderthePrinterCover

1) ExceptforRussianversion

Switch

1-1

Function

Printermode

ON OFF

Standard IBM

I 1-2 I Usageof RAM I Buffer

1-3
1-4
1-5

\ 1-6 I Oratorlowercase

1-7
1-8

k

1

AutoLF

No Yes
Autosheetfeeder Inactive
Pawr-outdetector

Enabled Disabled

I Smallcam I Lowercase

Pagelength

1

(See right)

Characterset

2-1

Characterset

(Standardmode) ‘raphics ‘wlics

(IBMmode) ‘et#2

2-2

2-3

Internationalcharacterset(Seeright)

2-4

D S 1

I Download

Active

Set#1

/

D S 2

O

P l

Inc s

Country

U.S.A.
France
Germany
England
DenmarkI*
Sweden
Italy
SpainI

Denmark/Norwaywhenswitc2-1is ON.

*

2 2

ON ON ON

OFF ON ON

ON OFF ON

OFF OFF ON

ON ON

OFF

ON

OFF OFF

ON

OFF OFF

2

OFF
OFF

OFF

2) ForRussianversion

I Switch \

Function

I 1-1 I Printermode

1-2

1-3

I-4

UsageofRAM Buffer Download
AutoLF No Yes
Autosheetfeeder Inactive Active

I 1-5 I Parer-outdetector

14

Character/Command

1-7

PageLength 11inches 12inches
Characterset Set#1 Set#2

Codepage

t---i

1-8
2-1
2-2
2-3

I 2-4 I Notused

ON

I

\ OFF

I Standard I IBM I

I Enabled I Disabled \

(Seeright)

(See right)

I I

-

Ch

I

( s 1 i o

Character/Command

Italiccancel
Italicselect
MSBnotcontrol
MSB=l

1-6

ON

OFF

ON

OFF

1-7

ON

ON
OFF
OFF

C p

Codepage

‘ R 1%---wl

#3840IBM-Russian
Gost

2-2

1

OFF

I OFF / OFF

2-3

I

ON

I

2

1)

2)

Atoffline

H

tl

Hold
Push

S p f

S p p

Agingmode

R m

Forwardm

F

w

*1 In thecaseof Russianversion,“ORATOR”fontis eliminated.

–7–

G SPECIFICATIONS

3. Parallel interface

3-1.GeneralSpecifications

Item

SynchronizationSystem

I/FProtocol

I LogicLevel

‘“d ~

STOROBE

Busy

3-2. ConnectorSignals

ACK

ViaexternallysuppliedSTROBEpulse
ByACKandBUSYsignals

I CompatiblewithTTLlevel

9 ~s

h

1

Fig. 1-5TimingChartsofParallelInterface

Specifications

I

T

+

T: More than().5 ILS

PinNo SignalName

1

STROBE
2 DATA1
3

DATA2
4 DATA3
5
6
7
8
9

10

11

DATA4

DATA5

DATA6

DATA7

DATA8

ACK

BUSY Lowwhenprinterreadytoreceivedata.

Goesfromhighto low(for>0.5ps)whenactive
Highwhenactive
Highwhenactive
Highwhenactive
Highwhenactive
Highwhenactive
Highwhenactive
Highwhenactive
Highwhenactive
9VSlowpulseacknowledgesreceiptof data

FunctionDescription

12 PAPER Highwhenpaperout.Canbe disabledwithDIPswitchsetting.
13

SELECT

Highwhenprinterison-line

14,15 NC

16
17
18

SIGNALGND

CHASSISGND

+5V +5VDCoutputfromprinter

19-30 GND

31
32
33

34,35

RESET Whenthisinput signalis low,printerisreset

ERROR

EXTGND Externalground

NC

36 SELECTIN

Signalground
Chassisground(isolatedfromsignalground)

Twistedpairgroundreturn

Outputs lowwhenprintercannotcontinue,duetoan error

Alwayshigh

-8–

GENERAL SPECIFICATIONS

Serial Interface (option)

Whenusing theserialinterface,theoptionalSerial-PmallelConvertermustbeconnectedwiththeprinter.

4-1. GeSpe

Item

Interface
SynchronizationSystem
Baudrate

Wordlength

Startbit:
Databit: 7or8 bits(selectable)
Paritybit: Odd,EvenorNone(selectable)
Stopbit:

Signalpolarity

Mark:
Space:

Handshaking

Databuffer 8KB(standard)

4-2. Connector Signals and Functional Descriptions

Pin No. \Signal name I Direction

I

1 GND
2
3
4

5
6

7

8-10

11

12– 19

20

21–25 NC

TXD OUT
RXD IN

RTS OUT Alwaysspace.
CTS

NC

GND

NC

RCH OUT

NC

DTR OUT

RS-232Clevel
Asynchronous

150-19,200 bitpersecond(BPS)[selectable]
150,300,600>1200,2400,4800,9600, 19200BPS

1bit

Morethen1bit length

Logic“l” (-3V to-15V)
Logic“O”(+3Vto+15V)

DTR
XON/xOFF
ETX/ACK

—

.

—

Printer’schassisground.
Thispincarriesdaiafromtheprinter.
Thispincarriesdatato theprinter.

Thispinis spacewhenthecomputerisreadyto senddata.
Thisprinterdoesnotcheckthispin.
Unused.
Signalground.
Unused.
Thisprinterturnsthis pin spacewhenit is readymreceivedata.
Thislinecarriesthesamesignalaspin20.
Unused.
Theprinterturnsthispinspacewhenitisreadyto receivedata.
Unused.

Specifications

Function

–9–

GENERAL SPECIFICATIONS

4-3. DIP Switch Settings

Switch

I

1 8data bits
2

3
4
5
6
7
8

AllswitchedaresetON whentheprinterleavesthe factory.

I
I

Baud rate Switch 6

150

Noparity
Handshakingprotocols- seetablebelow

Oddparity

Datatransferrate– seetablebelow

Protocol

DTRmode

XON/XOFFmode

ETX/ACKmode

300

600

I

I

1200
2400
4800
9600

19200

ON

7 databits
Paritychecked

Evenparity

Switch

I

I

Switch 7

OFF

OFF
OFF

OFF

\

ON
ON
ON
ON

I

I

I

3

ON

ON

OFF

OFF
OFF

ON

ON

OFF

OFF

ON
ON

OFF

I
I

I

I

Switch 4

ON

OFF

ON

Switch 8

OFF

ON

OFF

ON

OFF

ON

OFF

ON

I
I

I

I

I

1

I

–10 –

C 2

T O

1. B Di

M L B
2

2 GeF C

D I Op

2 PaIn
2 S In

2 Ed........................................................................................9

2 P H D C
2 P H TeDeC
2 CaM D C
2-2-5. CaM S C

2-2-6.P F M D C

.....................................................................................................

................................................................................................

.............................................................................................

................................................................................................

...................................................................................................

...............................................................................................

.................................................................................

......................................................

.........................................................................

.........................................................................

....................................................................

1

1
1

1
1
1

1
1

20

2
2

l

2
2
2

P S U

3

4 Me

4-1.

4
4
4
4

R Ci
R b + L V De
PrCi

P H Me
P H CaMe

I R F Me
P F Me
De

..........................................................................................................

..................................................................

..................................................................................................

..............................................................................................

.........................................................................................................

..........................................................................................

..........................................................................

................................................................................

........................................................................................

................................................................................................................

2
2
2

2

2
2

2
2
2

30

I

I

THEORY OF OPERATION

Block Diagram

1.

Theblockdiagramofthisprinteris shown in Fig.2-1.

DaLa
(From Host Comp.tcr)

8

Parallel
Interface

Driver

Printer
Mechamsm

~-———.
IAutomat,c ~
~SheetFeederl

.——— —.

Control

[

EPROM
64 KB

I

+};

Panel

~ju~

DIP

Switch

RAM

Main Logic Board

Gate Array

Driver

7 .~

Print Head

Detectors

!’

Carriage

4

Paper Feed
Motor

Power
Unit

AC Power

Motor

1

s

(

Fig.2-1BlockDiagram

(1) MainLogicBoard

Thisboardreceivesdatafromthehostcomputerandstoresit intheRAMinthe orderofarrival.TheCPUon this
boardreadsthedatafromtheRAM,andeditsitaccordingto theprogramstoredin theROM.
Whentheeditingiscompleted,variousdrivesignalsfromtheCPUare sent to theprintermechanismto perform
printing.
<Explanation>

1

CPUM50734SP

● Controlsthis printer.

2

EPROMP.PD27C51264K-byte

. Containstheprogramwhichexecutescontroloftheprinter.

RAMHM62648K-byte

3

● Usedasstackarea,workareaand databufferof theCPU.

4

Parallelinterface

5

Gatearray(customIC)
. Inputsoroutputsseveralsignals.
Driver

6

● ThedataeditedbytheCPUandgatearrayare sent to theprintermechanismafterconversionto the signal

fortheprintheaddrive,carriagemotordriveandpaperfeedmotordriverespectively.

7

ControlPanelBoard
. Thispanelcircuitis formanualoperationoftheprinter.

(2) PrinterMechanism

Theprintermechanismconsistsofa printhead,carriagemotor,paperfeedmotoranddetectors.

(3) PowerSupplyUnit

ACpowerisconvertedto25VDCand 5VDC.

– 13–

THEORY OF OPERATION

2. Main Logic Board

I O

2-1-1. PaIn
Communicationsbetweenthehostcomputerandthisprinterarefacilitatedviaparallelconnectors.Thissectionexplains
thehandshakeof thisinterface.
Thedatainputcircuit of thisinterfaceisshowninFig.

2-2.

CNI

1-

DATA1I

I
I

DATA8

STROBE

BUSY

I

I

ACK

~ ————————————————————,

DIN O]

DIN 7 \

—1

STBI

(
1

I

I

I

I

@

LS273

DQ

CLK

A

I

I

I

L ————————— — — — — —— ———

Q

LS244

AY

ii

5V

+

GateArray

————

; DO

r

1
I

r

I
1

I
[

i D7
!= ~

I

I
I

I

I

I

I

l—
IWR

I

I

I L

DO

- D7

Iii

CPU

Fig.2-2DataInputCircuitwithParallelInterface

Thefollowingisan explanationofthis handshake.
(1)

WhentheBUSYsignalis LOW(Ready),thehost

computer outputs 8-bitdata 1through8 totheconnectorCN1.

Pin 1carriestheS&OBE pulsesignd-hm thehost~mputer &theprinter.ThissignalisnormalIyheld HIGH
bythe hostcomputer.Whenthehostcomputerhasdatareadyfortheprinter,itsetsthissignaltoLOWforatleast

0.5p.s.

(2)

gatearrayofthemainlogicboardreadsdata1through8atthetimeofSTROBEsignalfall,andthenturnsthe

The

BUSYsignalandP-BUSYsignaltoLOW.
Whenthe BUSYsignalofthegatearrayissettoLOW,theBUSYsignalofconnectorCNlwillbeturnedtoHIGH,

(3)

notifyingthehost computerthatdatacannotbe accepted.

(4)

TheCPUisinformedviatheDOdatalinethattheP-BUSYsignalisLOW.TheCPUthensettheRDsignaltoLOW
andread thedata.

(5)

Uponcompletionofthedatareading,theCPUnotifiesthehostcomputerofthedatareceivablestatebysettingthe
BUSYsignalofconrtectorCNIandtheACKsignaltoLOW.Thisconcludestheexpkmationoftheparallelinterface
handshake.Thefollowingchartshowsthetimingchartof thehandshake.

–14 –

““K u

D

w

THEORY OF OPERATION

9

)

I

STOROBE

- i

BUSY

2-Ser(o

Whentheserialinterfaceis used,an optionalSerial-ParallelConverterisrequired to be installed.The converterwill
changethevoltagelevel(RS-232C

C 1

I

R

T

,

1

~ TTL)andthedatatransfermethod(Serial

I

Fig.2-3TimingChartof ParallelInterface

R

I 4

T

I

T

TT

J-Ill

I

M t (

~ parallel).

C B

P50

P
P
P

P
P

P
P

T=

P

P

P

P

P

P

, D

,

, D

1
I
I
I

D

D
D

D
D

S

B

I

$-

1

Fig.2-4SerialInterface(intheSeriai-ParaiielConverter)

– 15-

M

I

THEORY OF OPERATION

TheIC101isadualRS-232Cdriver/receiverwhichincludesa capacitivevoltagegeneratorto supplyRS-232Cvoltage

levelsfroma single5Vsupply.
DatafromthehostcomputerissentfromRXDviaICIOlandisinputtotheMPU.SerialdatainputtotheMPUisconverted

intoparalleldata,andoutputtothemainlogicboard.Conversely,paralleldatareceivedbytheMPUisconvertedthere
intoserialdata,andoutputtothe TXDterminalviaIC101.
TheCTSterminalishardware-connected,notsoftware-connected.(Thissignalisnotchecked.)
Thisprinter employs 3 differenttransfermethods,whichcanbe selectedusingthedip switches.(Referto Chapter1,
4-3

SettingDipSwitches)

(1)

DTRmethod
TheDTRsignalisconsideredaBUSYsignalatthehandshake,andwhenthedata buffercapacityis256bytesor
less,theDTRsignalis givena markedstatus,meaningitcannotreceivedata.Whenthecapacityofthedatabuffer
increasesto512bytes or moreduringprinting,theDTRsignalis givena spacestatus,whichindicatesthatit can
receivedata.

(2)

XoN/Xommethod
Whena handshakeiscarriedoutwiththehost computer,theXoN/Xommethodmakesuseof ASCIIcodes(DCl
andDC3).(DClandDC3arecalledXONandXom,respectively.)Whentheprinterbufferisfull,DC3(ASCIIcode

19)is outputtotheTXDterminal,andthecomputerreceivesarequesttostopdatatransfer.ThepnnteroutputsDC3
untilit(thecomputer)stopsdatatransfer.Duringprinting,whenthebufferfullstatusiscancelledanddatacanbe
received,DC1(ASCIIcode17)isoutputtotheTXDterminal.WhenDC1isoutputfromtheprinter,thecomputer
followsthedataformat,andbeginsdatatransfer.DatatransferwillcontinueuntilDC3 isoutputagain.

(3)

ETX/ACKmethod
Thedatablockisconfiguredasshownbelow,buttheinitialSTXcodeisnotnecessary.WhenanSTXcodeissent
fromthehostcomputer,that1byteisignored.Whenthe ETXcodeisreceived,that1byteisnotregardedasdata,
anACKorNACKcodeis senttotheTXDterminal,andthehostcomputerisinformedthatdatareceptionhasbeen
completed.
Datablockform:

+(

—

ETX

6 7

0

(

1

0

1

stop

B

---

,;

–-+

I

I

STX

S
B

—

(

DATA(8KBorless)

I ? 3 4

—

Fig. 2-5DataFormat

D B

5

1

–16 –

(1) DTRmethod

THEORY OF OPERATION

R

‘T~

“

O

(2) XoN/xoFFmethod

R

T

D

R

O

I I

I

I

I I

Ill

I

,

1

I 2

All

X();t ‘

1

1

12

u

@

N F (w t e a t d b b 2 h l )

@ N E ( t e a t d b b b m

X

X

1

1

II

X x

1

1111
II

1

I

B

(3) ETX/ACKmethod

R

T

D

R

O

B

@ N F (w t e a t d b b 2 h l )
@ N E ( [ e a t d b b b m
@ E ( t d b b e )
@ P E F E B O f

@ N F ( t e f t d b b b l
@ N E ( [ e a t d b b 1 b m

A (

I

II

v

II

E

E

1

F

F

II

E

E E

I I I II I

1111

F N

F

II

‘1tI

I

I I 11 I

F–

E

Fig. 2-6DataInputTimingChartwithSerial Interface

– 17–

THEORY OF OPERATION

2 General Flow C

Ageneralflowchartofeditingand printingoperationsispresentedinFig.2-7.

POWER ON

I

1

&

Read Data

T

NO

YES

Control Code

Processing Storage

4

Data

t (L

Data Processing

or Printing

(Print out of data)

Q

4

Fig.2-7GeneralFlow ChartofEditingandPrinting

NO

Return Action

–18 –

THEORY OF OPERATION

2-2-1. Editing

Datastoredin theRAMisreadoutsequentiallyby theCPUandtheneditedaccordingtoa functioncodethathasbeen
specifiedinadvance.
ThiseditingtakesplacesuntiltheCRorCR+ LF codeappearsorthe linebufferbecomesfull.

2-2-2. P H DrCi

EditedprintdataisoutputtoterminalQof LS273inthegatearraythroughtheCPUdatabus,asregulatedbytheissue
timingofa WRsignal.However,as forpin9 (HD9)oftheprinthead,thedataisoutputtotheterminalQofLS74upon
issue of thenextWRsignaI.Whenallthe datais receivedforprinting,anenergizedtimecontrolsignalis outputfrom

portP04oftheCPU.ThisallowstheprintdatatobeoutputtoHD-1-9 ofthegatearray.WhentheprintdataisHIGH,

thetransistorTR8willbe turnedONfor 335pS, energizingtheprintheadsolenoidto drivetheprint head.

+ 5V

\

D1

p H

/

Fig.2-8Print HeadDrivingCircuit

2-2-3. P H TeDeC

.Theprintheadtemperaturedetectioncircuitprotectsagainstdamagewhentheprint headheatsup abnormally.

Fig.2-9 shows thiscircuit.
Theprintheadhasa thermistortoshowthetemperatureoftheheadsolenoids.Thisthermistors anelementthatconverts
temperatureintovoltage.Itsoutputvoltageisinputto an analogpinof theCPU.TheCPUcomparesthisinputvoltage
againstitsreferencevoltageVwFtofindoutthetemperatureoftheheadsolenoidsandcarriesoutthefollowingoperations
dependingonthetemperature.

0 Ts95“C

● Normalprint operations

@ 95“C c T < 105‘C

. Intervalprinting;The print head stays for approximately0.5 secondwheneverit finishesl-line. When the

temperaturefallsbellow95”C,normalprintingisresumed.

@ 105‘C ST

. Thelinebeingprintediscompleted,thenprintingstops.Whenthethermistor’stemperaturefallsbelow105“C,

intervalprintingisresumed.

- 19–

+5V

T

Y $

F ( ~

I

Fig.2-9Print HeadTemperatureDetectionCircuit

2-2-4. CaM DrC

This printeremploysasteppingmotorasthecarriagemotor.Unlikeregularmotorsonthemarket,this steppingmotor

willnotoperatejustby connectingittoa powersource.Themotoroperatesonlywhena drivepulseisfedtoit,buteven
then,it turnsonlya certainangle.This steppingmotoris characterizedby 4-phasestepping.Controlof the motoris
facilitatedbyphase1-2excitation.Thefollowingshowsthecarriagemotordrivecircuitandthecontrolsignalgenerated
bythephase

1-2

excitationmethod.

+ + C

1 *

C

p
P

P

P

Fig.2-10CarriageMotorDrivingCircuit

1

;

(

–20

I

;

F L R

Mode

Operation: +25VDC

Standby:

–

01 :

03 ; :

Theutilizationof voltageappliedtothecarriagemotorisdescribedbelow:
Voltageappliedtothecarriagemotorischangedbysetting
portP30 of the CPU to HIGH or LOW and by turning
transistorsTR12andTR13ONorOFF.
WhenTR13isON,+25Vissuppliedtothecarriagemotor
andwhenTR13isOFF,+5Vis suppliedtothemotorvia
diodeD1.

;ON :

; , I : I

,,; ,

F R L ~

L

Fig.2-11CarriageMotorDrivingSignals

Carriage MOICN

Voltage Application

MotorDrive

+5VDC HoldingBias

I

THEORY OF OPERATION

2-2-5. Carriage M S C

Sincethecarriagemotoris a steppingmotor,tie carriagecanbestoppedatadesiredpositionbycontrollingacceleration
anddeceleration.Thecarriagecanalsomovebackward.
Therotationalspeedof thecarriagemotoris setby thenumberof pulsespertimeunit.Thecharacterpitch(horizontal
chamctersize)in eachprintmodeisdeterminedby changingthisrotationalspeed(orcarriagetransferspeed).
(1) Atstart-upof themotor:

Thenumberofpulsesinput to themotorincreasein steps,reachinga certainfrequency.

(2) Tostop themotoc

Thenumberof pulsesinputtothemotordecreasesinsteps,in orderto graduallybringthemotortoa halt.

(3) Whenprintingiscarriedout:

Pulsesof a uniformpulsewidthare suppliedforprinting.

2-2-6. P F M DrC
Again,a steppingmotoris employedasthepaperfeed motor,whichturnsa certainangleonlywhena drivepulseis
received.This4-phasesteppingmotoriscontrolledby the phase1-2excitationmethod.Thefollowingshowsthepaper
feedmotor drivecircuitand thecontrolsignalgeneratedbythephase1-2excitationmethod.

Fig.2-12PaperFeedMotorDrivingCircuit

-21 –

6

+

T

P

T

P

P

T

P

T

P

)

)

t

C

I

I

Fig.2-13PaperFeedMotorDrivingSignals

Theutilizationof voltageappliedto thepaper feedmotorisdescribedasfollows.

Mode Voltage Application

1

LD3 I

C

I

I I

13

+3

-+0

4

I

I

I

I

&

P F

M

d

Mot

Operation

Standby:

VoltagetothepaperfeedmotorischangedbysettingCPUportP31toLOWor HIGHandbyturningtransistorsTR19

andTR18ONorOFF.
WhenTR18isturnedon,+25Visappliedtothepaperfeedmotor.
WhenTR18isturnedoff,+5Vis suppliedtothemotorviadiodeD3.

+25VDC

+5VDC HoldingBias

MotorDrive

- 22–

1

THEORY OF OPERATION

2 R Ci
T RESETsignalinitializesthecircuitelementsandpreventsoperationerrorswhenthepoweristurned on.

TheRESETsignalisoutputforapprox.34ms.whenthepoweristumedon,orwhiletheRESET(INPUT-PRIME)signal

is beingoutputfromthehostcomputer.

——

\

HDI

HD

(

HD9

IN-PRIME

CN1

T

I

I
/

I

+ .5V

t

OUT D

IC6 ~

GND

.———————— — ———

I

I

I

5

1

,

c1 1

J=

WD%? Do —

)

r I

1

DOR&

))

I

I

I

d

+ 5V

A

+25V

I

Fig.2-14ResetCircuitandProtectionCircuit.

● PowerOnReset

1 Whenthepoweristurnedon,theRESETsignalisoutputtoPin5 ofIC6(M51953BL)forapprox.34msec.This

timelengthisdeterminedbyexternalcapacitorCl 1(0.lP.F),anditcanbe calculatedbythe followingformula.

T = 0.34

2 ThisLOWsignaltriggersRESETcommandto theCPUandtheRESETterminal(RES)of thegatearray.

Resettingthe CPUandthegatearraywillignoreallthedrivesignalsforthe carriagemotor,thepaper feedmotor

3

andthe printhead,preventingoperationerrorsatpowerON.

. Resetby InputPrimeSignalfromHostComputer
1 Theinputprimesignalfromthehostcomputerisoutputtopin 31of theconnectorCN1.

2 ThisoutputsignalwillsettheterminalINIT2 oftheCPUtoLOW,executinginterruption.Then,theCPUwillbe

initialized.

X Cll (PF)WK.

–23 –

THEORY OF OPERATION

2 R b + V D

Avoltage-detectingIC(IC6inFig.2-14)detectsmomentarydropsin voltageorunstablevoltagesupply(duetopower
failures,etc.)on the+5Vline.Ifthevoltageonthe+5Vlinefallsbelow4.25V,theRESETsignalappearsattheoutput
terminalofthe voltage-detectingIC.

V

5

OUT

VoltageA

o
V A

–— – ——

~

=

*

X ( [

t

w

R2::

()

1,~sv

V

91

t

5pA

+

1

. .

A4

GND

Cd

Fig.2-15EquivalentCircuitof

Fig.2-16OperationalTimingChart

Voltage-DetectingIC

2

PrWection Circuit

Thisprinterisprovidedwitha protectioncircuitwhichshutsofftheprintheadandmotordrivingcircuitsin theeventof
a CPUmalfunction.(RefertoFig.2-14)

TheCPUnormallyoutputsaLOWlevelsignalfromtheterminal(JVDOUT).
However,iftheCPUmalfunctions,itcan notoutputthissignal.

Whenthe LOWlevelsigmlisnotoutputfromtheCPU,theinputterminal(Cd)ofthevoltage-detectingICgoestoLOW
andtheRESETsigmlisoutputfromtheoutputterminal(OUT)of the voltage-detectingIC.Bythissignal,theCPUand
thegatemay arereset;andtheprirtthead,thecarriagemotorandpaperfeedmotordrivingsignalsareignored,protecting
theprinter fromthe CPUrunaway.

–24 -

THEORY OF OPERATION

3. Power Supply Unit

Fig.2-17showsthepowersupplyunit.
TheACpowerissteppeddownto Vsl andVS2bythepowertransformer.TheVsl powerisfull-waverectifiedbythe
DB1rectifierstackandsmoothedby electrolysiscapacitorC4. The smoothedDCpoweris convertedintothe stable
25V’DCpowerbythechoppercircuit,whosemaincomponentisIC1.TheVS2 powerisfull-waverectifiedbytheDB2
rectifierstackandsmoothedbytheelectrolysiscapacitorClO.PartofthissmoothedVs20utputisconvertedintothestable
5VDCpowerbyfixedvoltageIC2.

Input

output

VoltageRange
120VAC
220VACand240VAC

MaximumCurrentoutput

0.8A

0.5A

5VDC?2.5% 0.83A

25VDCti%

1.89A

Service

Forlogic circuitdrive,
Formotor holding

Forprintheaddrive,
Formotor holding

Typeofcircuit

Dropper

Chopper

+25V

t

+5V

Fig.2-17PowerSupplyUnit

–25 –

THEORY OF OPERATION

WewillexplainthechoppercircuitintermsofFig.2-18,a simplifiedversionofFig.2-17.IC1isa pulse-widthcontrol
switchingregulator.It hasa referencevoltagesection,oscillationsection,pulse-widthcontrol section,and power
transistors.Fig.2-19showsanequivalentcircuitforIC1.
ThechoppercircuitswitchesthepowertransistorsinIC1onandofftodivideinputvoltage
thosepulseswithchokecoilL2andcapacitorC9toobtainthedesiredoutputvoltage

Since thepulse width control sectiondetermines theratio of thetimethatthepower transistorsareonandoff bycomp~ing
the output voltage with the reference voltage, the output

voltagecanbeheldsteady.
Inorderwords,iftheoutputvoltagefallsbelowthereferencevoltage,thepulsewidthcontrollerextendsthetimethatthe
powertransistorsare on,thusraisingtheoutputvoltage.TheoutputvoltageVOUTcanbeexpressedwiththefollowing
equation.

VINintopulsesandsmoothes

VOUT.

Vour = VIN.

TON :

TOFF :

T:

Durationthepowertransistorsareon
Durationthepowertransistorsareoff
TON+ TOFF(constant)

TON

TON+ TOFF

= VIN. +

DiodeD1formsa pathwaythroughwhichtheenergyaccumulatedonchokecoilL2whilethepowertransistor
dischargedwhilethepowertransistorsareoff.

—————————._——————

I

PowerTransistor

o

V

o

I

I
I

I
I

I
I

i

i
I

I

Ic 1

PulseGenerator
Block

I

————

I

1

1—

I

I

I

1 L

LZ

Y

D1

R3

+

4)

z C9

o

o

L _ –

Fig. 2-18ChopperCircuit

a on

is

r-=w-

Os

F C

1

3

(

Inh

\

;w’M

s

‘

I
F
F

R Q--

Q-

1 r

Iv

D

G

i

4

1

Fig. 2-19 Equivalent Circuit for Voltage Regulator IC1

–

–26

I

THEORY OF OPERATION

4. Mechanism

P M

Theprintheadconsistsof9 needlewiresand9 printsolenoids.Thefollowingexplainshoweachneedlewireoperates
duringprinting.
(1) Whentheprintsolenoidisenergized,theclapperisattractedbytheironcoreand theneedlewireisdriventoward

theplaten.
(2) Thisneedlewirehitstheplatenviatheinkribbonandpaper.Asingledotisprintedon thepaper.
(3) Whentheprintsdenoidisale-energized,theneedlewireisreturnedtoitsoriginalpositionbyreboundenergyand

springandclapperholder(leafspring)force.

P G

P

I I

S S

N W

I I

.

C H

C

1

4-2.

P C M

print headcarryingmechanismconsistsmainlyofa carriage,timingbelt,carriagemotor,andhomepositiondetec-

tor.

(1)

Carriage

Thecarriageissupportedhorizontallyby meansofthecarriagestayandrearangle,anditmovesfromsidetoside

withtheprintheadmountedaboveit.Atimingbeltis clampedtothebaseof thecarriageanda plateis mounted

atthebaseforhomepositiondetection.
(2)

TimingBelt

Thetimingbeltissuspendedbetweenthetimingpulleyofthecarriagemotorandthetimingpulleyofthetension

lever,and it maintainsaconstanttension.

Thetimingbelt is alsoclampedtothebaseofthecarriagesothatitcanmovethecarriageaccuratelywithdriving

forcefromthecarriagemotor.
(3)

CarriageMotor

Thecarriagemotorisa HB (Hybrid)type,four-phaseand192-polepulsemotor,whichisdrivenbypulsesignals

fromthecontrolcircuit.Therotationalratedependsonthenumberofpulsesperunittime.Byvaryingthisrotational

rate(thatis,thecarriagecarryingrate),the sizeof the horizontalletterscanbe changedineachprint mode.

D

1

o

P I

Fig,2-20OutlineofPrintHeadMechanism

I R

G

I C
B

–27 –

I

THEORY OF OPERATION

T B

C M

Fig.2-21PrintHeadCarryingMechanism

4

iswoundupautomaticallywhilethecarriagemovesleftorright.
Theribkm feedmechanismisdrivenbytorquefromthecarriagemotor,andcarriagemovementallowstheidlergearto
rotate.
Thisrotationisconveyedsequentiallytothegearsthatworktowindtheribbon.Thecarriageisequippedwitha clutch
leversothat thedirectionofcassettegearrotationremainsconstantregardlessofthedirectionoftheidlergearrotation.

R M

inkribbonfeedmechanismislinkedtotheprintheadcarryingmeehanismdeseribedpreviouslysothattheinkribbon

C G

T P

f?”

\

I G

G t C L

Fig. 2-22RibbonFeedMechanism

- 28–

THEORY OF OPERATION

4-4. Paper Feed Mechanism

paperfeedmotoris aPM type,four-phaseand48-polepulsemotor.

The

Minimumpaperfeedis setat 1/216inch.
Therearetwowaysoffeedingpaperavailablewiththisprinter:FrictionmethodandTractormethod.Youcanselectone
ofthetwomethods,usingtherelease lever.

I Positionofreleaselever

Linkagebetweentractor

gearandtractorclutch
Platenrollerandholderroller
Releaseleverpositiondetector

I Paperfeedingmehd

(1)

Friction Method

Frictionmethodisselectedwhenthereleaseleveris position@.
Withthismethod,paperispressedbetweentheplatenrollerandtheholderroller;therefore,paperisfedastherollers
turn.
Asthe paperfeedmotorisdriven,themotorgear, throughtheidler gear,turnstheplatengearin thepaperfeeding
direction.However,sincethetractorgearandthetractorclutcharenotlinkedat thistime,thetractorunitwillnot
bedriven.

(2) TractorMethod

Tractormethodisselectedwhenthereleaselever is position@.
Paperfeedingisfacilitatedbyrotationofthesprocketpinofthetractorunit.Whenthetractormethodisselected,
thetractorgearis linked to thetractorclutch,enablingthedriveforcegeneratedbythepaperfeed motor to be
transferredtothetractorunitviatheidIergearandtheplatengear.

l

Not

I

Pressed

Closed

I Friction I Tractor I

I

Linked

Not

Open

I

P G T G

L

o

Fig.2-23PaperFeedMechanism

–29 –

I

THEORY OF OPERATION

D

HomePositionDetector

(1)

Aleafswitchisusedinthe homepositiondetector,whichis setat theleftsideof theframeunit.
Open/CIOsesignalsaregeneratedaccordingtothepositionoftheshieldplatemountedatthebaseofthecarriage,

andthe printingpositionisdeterminedby thesesignals.

(2)

PaperOutDetector
Apaperoutdetectorislocatedatthepaperinsertionslit.Whenpaperispresent,theprecisionsnap-actingswitch
ofthedetectorisCLOSE.Assoonaspaperrunsout,theswitchissettoOPEN,outputtingapaperemptysignal.

Fig.2-24HomePositionDetector

BailLeverPositionDetector

(3)

Upondetectingthe positionofthebaillever,theautoloadingoperationwillbeactivated.Theleafswitchis open
whenthebailrollersisin contactwiththeplatenroller,andit is closedwhenthebailrolleris sepmatedformthe

platenroller.

(4)

ReleaseLeverPositionDetector
Theleafswitchisclosedwhenthereleaseleveris in thefrictionposition,andis openin thetractorposition.

+5V

R

De
S

L

L

Fig.2-26BailLeverPositionDetector

Fig.2-25PaperOutDetector

+5V

R

D
S

Fig.2-27ReleaseLeverPositionDetector

L

L S

7

–30-

C 3

A

Thisprinterhasundergonevariousadjustmentsso thatit will achievestandardperformance.

Inthischapter,abriefexplanationisgivenof themethodsof adjustments.

Followtheinstructionwhenmakingmaintenanceinspectionsorwhenreplacingpartstocorrectmalfunctions.

1.

GapAdjustmentBetweenPrintHeadand Platen

MeG B P H a P

1-1.

Ad

1

Adjustmentof TimingBeitTension

GapBetweenPrintHeadandPlaten

..................................................................

............................................33

................................................

3

..................................................33

34

I

I

ADJUSTMENTS

1.

Gap Adjustment Between Print Head and Platen

M B P P -

Removetheuppercaseunitaccordingtoprcxxdures

(1)

describedinChapter4.

(2)

Settheindexlever 0 at steptwo.
Removetheribbonguide @ .

(3)

Inserta thicknessgauge @)betweentheprinthead

(4)

(@ rmdtheplaten @ ,andmeasure thegap.

Thismeasurementmustbe carriedoutat thecenter

(5)

0.

Thestandardgapvalueis0.30to0.40 mm.

(6)

Ifthegapdoesnotliewithinthisrange,adjustitby

(7)

followingtheprocedureinitem1-2.

Fig.3-1Gap Adjustment

Step2

Fig.3-2Positionof AdjustmentLever

1-2.

A B P P

Ifthegapdoesn~tliewithinthestandardrange,adjustitby
carryingoutthefollowingprocedures.
(1) RemovetheprintermechanismacccxdingtotheprO-

ceduresdescribedinChapter4.

(2) Loosenthescrew@)securingtheadjustmentlever

@ andtheindexlever~.

(3) Holdingtheindexlever @ atthepositionshownin

Fig. 3-2, shift the adjustmentlever @ for gap
adjustment.
Whentheshaft isloweredtotheplatenside,thegap
isreduced,andwhenloweredto the oppositeside,
thegapisexpanded.

(4)

Afteradjusting,tightenthescrew @ .

[0

Fig.3-3GapMeasurement

A

\-

\

Fig.3-4Gap Adjustment

–33 -

ADJUSTMENTS

2. Adjustment of Timing Belt Tension

Thetimingbelt tension shouldbe set atfrom14gto 18g.

(Thebelt tensionmustremeasured with thedesignatedtensiongauge @) .)
Afterthebelthasbeenusedforalong time,

deteriorationor wear.In thesecases,make

(1)

Removetheuppercaseunit accordingtotheproceduresdescribedin Chapter4.

(2)

MovetheCarriageunit@ rightandlefttwoorthreetimesinordertofamiliarizeyourselfwiththetimingbelt @ .

(3)

Settheindexlever @ atstep2asshowninFig. 3-2.

(4)

Movethecarriageunit @ to therightend.

(5)

Setthearm @ ofthetensiongauge @ 152mmaparthorn theframeL.

(6)

Movethetensiongauge@) in thedirectionoftheplaten (@untilitstops.Thenplacethearm @ ofthetension
gaugeon thetimingbelt O .

(7)

Loosenthescrew @ .
Insertaflat-bladescrewdriverintothesquareholeofthetensionarm @)andadjustthebelttensionbymovingthe

(8)

tensionarm @)leftorrigh~

(9)

Whenthebelthasbeenadjustedtotheprescribedtension,tightenthesettingscrew @ .

(lo)

Ifthebeltcannotbe adjustedtotheprescribedtension,replaceit withanew timingbelt @ .

however,itmaybedifficulttomaintainprescribedtensionbecauseofbelt

adjustmentsby followingthe procedureslistedbelow.

Fig.

3-5AdjustmentofTimingBelt- ‘

II

A

@

Fig.3 TensionMeasurement

-34-

C 4

P R

This chapterexplains disassemblyand reassemblyof the printer.Note the followingprecautionsduring
disassemblyandreassembly.

1.

Disconnecttheprinterfmm thewalloutletbeforeservicingit.

2.

Assemblyis thereverseofdisassemblyunlessotherwisespecified.
Afterreassembly,coat the screwheadswithlockingsealant.

3.

4.

Lubricationinformationisnotprovidedinthischapter.Referto item2 in chapter5.

1.

UpperCase Unit

2.

PrinterMechanism

PowerSupplyUnit

3.

4.

MainLogicBoard

Fuses

5.

PrintHead

6.

7.

CarriageMotorUnit

8.

PlatenUnit

TractorUnit

9.

....................................................................................................................

..................................................................................................

..............................................................................................

..............................................................................................

................................................................................................

............................................................................................................

............................................................................................

...........................................................................................................

..........................................................................................................

37

37

38

38

39

39

40

40

41

A

E,

10.

DetectorUnit

.......................................................................................................

41

1. Upper Case Unit

(1) Turnoff thepowerswitch @ .
(2) Remove

● Printercover

. Rearcover
. Platenknob @

● Fourscrews@

(3) Movethecarriageunit @ overtothenghtsothatit

alignswiththecut-outoftheuppercaseunit @ .

(4) Remove

● Uppercaseunit @

. Controlpanelboard (@

2. Printer Mechanism

(1) Remove

●

Uppercaseunitaccordingto the procedurede­scribedinitem1.

●

Releaseleverspring @

●

Stopring @

●

Releaselever @

●

Releaseshaftunit @)

●

Threetappingscrews@

●

Connectorcover @
Liftupthetaboftheconnectorcover,andslideit
tothe rightforremoval.

●

Printerheadcable@

●

Threeconnectors@

●

Printermechanism@

Caution in assembly:

Align the

A markon the releaseshaftunit @ to install the

releaselever @ .

A markonthereleaselever @ withthe

–37 -

PARTS REPLACEMENT

3. Power Supply Unit

(1) Remove

Uppercaseunitaccording to the procedurede­scribedinitem1.
Connector@
Twotappingscrews @
Twotappingscrews @
Twoscrewso
Powerswitch @
Powersupplyunit@

4. Main Logic Board

(1) Remove

●

Printermechanismaccordingto the procedure
describedinitem2.

●

Power supplyunit accordingto the procedure
describedinitem3.

●

Comector @

●

Threetappingscrews@

●

Mainlogicboard @

–38 -

PARTS REPLACEMENT

5. Fuses

(1) Remove

● Power supplyunit accordingto the procedure

describedinitem3.

(2) Inspeet

● Fuse F1 @

c FuseF2 @

● Fuse F3 @

Defective~ Replacefuseas follows:

ACVoltage

120V

220V1240V

Destination F2,F3

US,UK,AS

EC,HK,WG,LA,SU EAK3.15A

Newfuseblown+ Inspectcircuit

6. Printer Head

(1) Remove

●

Printercover

●

Inkribboncartridge

●

Conneetorcover@

●

Twotappingscrews@

●

Headcable@

●

Print head@)

WARNING:
Theprint

forit tocoolbeforeremovingit.

(2) Adjust

. Gapbetweenprintheadand platen

Refertoitem1ofChapter3.

headbecomeshotafterprintingsowait

F1

5’ITIA

630mA

1

5TT3A

–39 –

I

PARTS REPLACEMENT

7. Carriage Motor Unit

(1) Remove

1

●

Printermechanismaccordingto the procedure
describedinitem2.

●

Cordfastenerbindingtheleadwires

●

Connector@

●

Twoscrews @

●

Carriagemotorunit @)

8. Platen Unit

(1) Remove

●

Printermechanismaccordingto the procedure
describedinitem2

●

Twonuts @

●

Tractorstay @

●

Stopring @

●

Groundcontactspring @

●

PlatenholderR @

●

PlatenholderL (@
Lift the tabs @ of platen holdersR and L to
allowremovalofplatenholdersRandL fromthe
frame.

●

Platenunit @

Cautioninassembly:

Whenassemblingtheplatengearassembly@onthe
idlergear@,aligntheteethofgearAandgemB(be

suretoaligntheholes~ in the twogears).

(2) Adjust

● Gapbetweenprint headandplaten.

Referto item 1of chapter3.

–40 –

I

PARTS REPLACEMENT

9. Tractor Unit

(1) Remove

1

●

Uppercaseunitaccordingto the procedurede­scribedinitem1.

●

Stopring @

●

Releaselever@

●

Twonuts @)

●

Twotractorbushings@)

Liftthetab@of thetractorbushtoallowremowd
ofthetractorbush fromtheframe.

●

Tractorunit @

Caution in assembly:

Forreassembly,holdthe sheetguide @ at the

.

centerofthetractorshaftandpushtheguideinto

the printer.

. Alignthemark(A or1)on thereleaselever@

withthemark

(Aor 1)onthereleasegear@ to

installthe releaselever@.

O p

N p

10. Detector Unit

(1) Remove

●

Printermechanismaccordingto the procedure

describedin item2.

●

Cordfastenerbindingtheleadwires

●

Sub-guide@
Liftthesub-guidetoremovethecut-out @ from
theprojectionand slideit totheleftto remove.

●

PEdetectoro

●

Screw@

●

Homepositiondetector@

●

Connector@

–41 –

CHAPTER 5

Em

MAINTENANCE AND LUBRICATION

1. Maintenance

1-1.

Cleaning

1-2. Checks

2. Lubrication

2-1. Lubricant
2-2.

2-3 LubricatedAreas...................................................................................................

LubricatingMethod...............................................................................................

........................................................................................................

.................................................................................................................

....................................................................................................................

...........................................................................................................

................................................................................................................

45
45

45

46

46
46

46

I

MAINTENANCE AND LUBRICATION

1. Maintenance

Inorderto maintaintheoptimumperformanceof thisprinterandtopreventtrouble,maintenancemustbe carriedout

accordingtothefollowingitems.

1-1.

Cleaning

(1)

Removalofdirt
Wipeoffdirtwitha softclothsoakedin alcoholorbenzine.
*Note: Donotuse thinner,trichleneorketonesolventsbecausetheymaydamageplasticparts.Alsoduring

cleaning,becarefulnottomoistenordamageelectronicparts,wiring,ormechanicalparts.

Removalofdus~pile,etc.

(2)

Vacuumcleaning(withan electriccleaner)isprefen’ed.Removealldus~etc.,inside theprinter.

*Note: Aftercleaning,checktheoil level.If it is notadequatedueto cleaning,replenishit.

1-2.

Checks

Checksmustbecarriedout at twolevels:a“dailycheck”whichtheoperatorcaneasilycarryoutduringoperation,and
a “periodiccheck”whichanexpertshouldcan-yout.

(1) Dailycheck

Whenthe printeris usedon a dailybasis,checkthattheprinteris usedproperly.Makesurethattheprinteris
operatingunderthebestconditions.

● Is anypaperstuckinthepaperboxorprintercase?

● Is thecartridgeribbonsetat therightposition?

. Isthereanyforeignmatterinsidetheprinter?(Removeifany.)
. Istheprintheadgettingexcessivelydirty?

(2) Periodiccheck

After6 monthsorprinting1millionlines, theperiodiccheckand lubricationmustbe carriedout.
. Checkfordeformationofsprings.

● Checkthegapbetweentheplatenandtheprinthead.

● Removedust, m etc.,aroundthedetectors.

–45 -

MAINTENANCE AND LUBRICATION

2. Lubrication

Lubricationis veryimportanttomaintainoptimumperformanceandtopreventtrouble.

2-1. Lubricant

The type of lubricant greatly affects the performance and durability of the printer, especially in a low temperature
environment. We recommend use of the grease and lubrication oils listed below for this printer.

I

I FLOILGB-TS-OandGB-1OO

2-2. Lubricating
Whenlubricationiscarriedoutinassemblyanddisassembly,washpartswelltoremovedustanddirtbeforelubrication.

Lubricationmustbecarriedoutregularlyonceevery6 monthsorafter1millionlineshavebeenprinted.Lubricationis

necessaryirrespectiveoftheregularlubricationwheneverlubricantbecomesdeficientaftercleaningorwheneverparts
havebeendisassembledorreplaced.

2.1.

- -. ---- ------ ------

Productname

I

I KantoChemicalsCo.,Ltd.

KF96-1OOOCSandKF96-SP ShinetsuChemicalIndustry
Mobil1

Method

1.llhriontdAreas

NO.

1

2

3

4

5
6
7

8

9

10 Rubbingsurfacesofrearangleandcarriage

11
12 Rubbingsurfacesofbushingandcarriagestay
13
14
15
16
17
18 Rubbingsurfacesofidlerassy711andgearcover

19

20
21

Rubbingsurfacesof idlergear16x72x 0.5andidlergearshaft
Rubbingsurfacesof gear40x 0.5 andgearshaft
Rubbingsurfacesof timingpulleyandpulleybushing
Rubbingsurfacesoftimingpulleyandpulleyshaft
Rubbingsurfacesof twotractorbushingsandtractorshaft
Rubbingsurfacesof idlergear17x 41 x 0.3 andclutchlever
Rubbingsurfacesof idlergear16x 1-40x 0.3andcarriage
Rubbingsurfacesofribboncassettegearandcarriage
Rubbingsurfacesof idlergear43x 63 x 0.3andcarriage

Rubbingsurfacesof Adjustingleverandframe

Rubbingsurfacesof bailrollerand shaft
Rubbingsurfacesoftimingpulleyandstopring
Rubbingsurfacesoftractorholderandtractorcover
Rubbingsurfacesofreleaseshaftandframe
Rubbingsurfacesof releaseleverandtractorshaft

Rubbingsurfacesof wavewasherandpoly-slider
RubbingsurfacesofidlerassyTRXandgearcover
RubbingsurfacesofrearangleandidlerassyTRX

Mobiloil

Maker

LubricatingPoint Grease/Oil

GB-TS-O
GB-TS-O

GB-1OO
GB-TS-O
GB-TS-O
GB-TS-O
GB-TS-O

GB-TS-O
GB-TS-O
GB-TS-O
GB-TS-O

Mobil1
KF96-SP
GB-TS-O

KF96-1OOOCS

GB-TS-O

GB-TS-O
GB-TS-O
GB-TS-O
GB-TS-O
GB-TS-O

–46 –

MAINTENANCE AND LUBRICATION

Detail- B

Fig.5-1LubricatedAreas

-47-

%

CHAPTER 6

TROUBLESHOOTING

TroubleshootingProcedures

1.

Unit ReplacementPriorityChart

2.

Repalrby Unit Replacement

3.

Repalrby PartsReplacement

4.
4-1. DoesnotOperateatAll

4-2.

PowerSupplyCircuitAbnormal
4-3. DefectiveMotorOperation
4-4. DefectivePrintHeadOperation
4-5. DefectiveInterfaceOperation

.............................................................................

........................................................................

..............................................................................

.............................................................. ..............

withPoweron

..........................................................................

...................................................................................

...........................................................................

..............................................................................

...............................................................

51

52

53

59

59

60
61

62
63

TROUBLESHOOTING

1. Troubleshooting Procedures

Troubleshootingisnevereasybecausevariousproblemsarisedependingupontheparticularlocationofthebreakdown.
Thefollowingproceduresshouldbetakenin makingrepairs.

(1) Thefirstmethodistomakerepairsthroughunitreplacements.Thetwodisplaycodesappearingintheflowchat

aredefinedasfollows:@indicatesmainlogicboardreplacement;and@indicatesprintermechanismreplacement,
tobecarriedoutif problemhasnotbeencorrected.

0

@

Checkagainatthistimewhetherthereplacedunitismalfunctioning,(Thisis donetoruleouttroublecausedbyimproper
contactofconnector.)
Replacxxbleunitsincludethefollowing:

● Powersupplyunit

. Mainlogic board
. Printermechanism
Inreplacingtheseunits,alwaysreferto theunitreplacementchart.

(2) Thesecondmethodistomakerepairsby partsreplacementtoreplacedefectiveelementsinsideaparticularunit.
(Note1) Beforestartingtorepair, be suretocheckvisuallythecontactofthe connectorandthemountingoftheIC

intheIC socket.
(Note,2)
(Note3)

(Note4)

(Note5) BeCarefultoavoidinjuryhorn staticelectricitywhenhandlingICSandmainlogicboard.

Alwaystumoffpowersourceandremovepowerplugbeforereplacingany unitsor parts.

Allchak itemsshownin the flowchartmustbe checked.Otherwise,newlymountedpartsorunits may

becomedarnaged.

If,intheprocessofmakingrepairs,thereisanyconfusionaboutproperprocedures,restartthejob fromthe

beginning.

MainLogicBoardReplacement

PrinterMechanismReplacement

-51-

TROUBLESHOOTING

2. Unit Replacement Priority Chart

Category

3
3

g
c onlycannotk 1

“:

j

%
~

?.?

B

s

~~
.2 +’

E’

~e

~j

h

g
~
g DIPswitch

:
3

g

a

a

%

~

u

Problem

Details

Specificdisplay
lamponlywill

notglow

Specificswitch
input

Buzzerdoesnot
sound(sound
volume
inadequate)

Srrangesounds
duringoperation

No motor
holdingpower
(powervery
weak)

;;;;~!ght
Inkribbon

snagged
(wiresticksout)

Absenceofpaper
notdettxted

Leverposition
notdetected

Incorrectprinting
Inkribbonnot

forwarded
Nooperationat

setting
Faultyoperation

whenpoweris
turnedon/off

Abnormalmotor
operatingspeed
(slow)

Fuseblown
duringoperation

Power

supplyunit

UnitExchangeSequence

2

3

Main

logicboard

1

1

1

1

2
2

2

2

1
1

1

1

1

1

Printer

mechanism

2

2

1

1 Replaceinkribbon

1

1

2

1

2

2

Remarks

CheckI/Fcable

Note:Thefigures1,2 and3 meanthepriorityof replacement.

-52-

3. Repair by Unit Replacement

* Turn power off.
* Remove l/F cable.
* Mount ink ribbon.
* Set paper.
* Move carriage to center. ]

Turn power on.

I

TROUBLESHOOTING

@

YES

NO

Replace printer

mechanism.

@

*I See (6) and (7) waveform

in item 8 of chapter 7.

NO

@ Replace main logic

board.

@ Replace printer

mechanism.

I

NO

I

@ Replace main logic

board.

@ Replace printer

mechanism.

,

I

-53-

(9

TROUBLESHOOTING

YES

NO

Press paper feed switch.

operation is normal?

YES

Turn power off.

I
Holding paper feed switch,
turn power on.

NO

Replace main logic
board

NO

Self
printing:

4

Q

motor drive waveform

Replace printer

mechanism.

@

*2 See (8) and (9) waveform

in item 8 of chapter 7.

NO

@ Replace main logic

board.

@ Replace printer

mechanism.

I

YES

NO

Replace printer

mechanism.

(9

-54-

*I See (6) and (7) waveform

in item 8 of chapter 7.

NO

@

Replacemainlogic
board.

@ Replaceprinter

mechanism.

2

Q

YES

NO

NO

Replace printer
mechanism.

@

TROUBLESHOOTING

*3 See(4) and(5) wavef’orm

in item 8 of chapter 7.

NO

@ Replace main logic

I board.

@ Replace printer

mechanism.

1

I

*2 See (8) and (9) waveform

in item 8 of chapter 7.

YES

Terminates self printing.

Check host computer
connection.

I
Turn power off and
check I/F cable.

Turn power on.

NO

O Replace ink ribbon.
@ Replaceprinter mechanism.

@

I

I

Replace printer mechanism.

I

o

YES

I

@)Replace main logic board.
@ Replace printer mechanism. I

I

I
Send print program

from host computer.

-55-

TROUBLESHOOTING

Stop print

program.

I

END

-(D

(IJ Replace I/F cable.

@ Replace main logic

board.

@ Check host computer,

o

NO

Turn power off.

I

Replace fuse.

Remove cormqctor

CN5

from

main logic board.

1

Turn power on.

[

4

0

I

I

YES

I

@ Replace main logic

board.

@ Replace printer

mechanism

I

I

I

Replace power supply
unit.

*4

+25V Line

+5V Line

+2SV*5%

+5V*2.5YC

●

●

Pin I of CN I
Pin 4 of CN I

-56-

TROUBLESHOOTING

NO

Replace power supply

I

Turn power off.

I

I

#

unit.

Connect connector

CN5 from

I

Turn power on.

Replace fuse.

@ Replace main logic

board.

@ Replace printer

mechanism

F

@

I

I

NO

●

*4

+25V

+5V Line

Line

+25V*5%

+5V~2.5T0

Pin I of CN1
Pin 4 of CN 1

–57 -

TROUBLESHOOTING

cl

Check hardware or host

computer print program.

*5 See(l O)waveforrnin

item 8 of chapter 7.

YES

No

YES

*

m

Change I/F mode.

Replace I/F cable.

@

@ Replace main logic

board.

4

Y

o

@

-58-

4. Repair by Parts Replacement

4-1.Doesnot Operateat AllwithPoweron

TROUBLESHOOTING

w

I

YES

YES

NO

NO

NO

DC Power abnormal.

I

Check RESET circuit;
replace parts.

Check crystal circuit;
replace parts.

See 4-2. Power Supply

I

Circuit Abnormal.

*

YES

Carriage motor abnormal.

4

I

Check operation.

I

END

NO

@ Replace CPU or ROM,

@ Check ~elevant circuit.

1

See (2) waveform in item 8 of chapter 7.

*2

See (1) waveform in item 8 of cbapter 7.

*3

*1

+25V Line

+5V Line

+25vf570

+5V*2.570

Pin I of CN1

Pin 4 of CN1

b

*

TROUBLESHOOTING

4-2. Power Supply Circuit Abnormal

(1) RemoveconnectorCN5fromthemainlogicboard.

START

YES

Replace

Fuse F1

I

YES

Replace

Transformer

I

I

1

No

Replace

Tritnsformer

4

YES

Connect the
Connector CN5

I

The no load voltages are below:

-

+

NO

A

YES

YES

1

Check and replace

(D ICI
@Dl
~ DB 1

I

I

Check and replace

c IC2
@ DB2

I

I

-60–

4-3. DefectiveMotor Operation

TROUBLESHOOTING

START

7

YES

NO

Check and replace
c’ TR201
a’ TR19
@

NO

Check and replace

o TR14-17
@ CPU

CPU

1

1

I

NO

Check and replace

YES

-1

YES

4

●

1

Replace
CR-motor

@ TR201
@ TR 12
@

NO

Check and replace

@ TAI

a’CPU

I

I

CPU

1

1

I

w

Check operation.

*4 See (8) waveform in item 8 of chapter 7.
*5 See (9) waveform in item 8 of chapter 7.
* 6 See (6) waveform in item 8 of chapter 7.

*7 See (7) wavefo~ in item 8 of chapter 7.

1

Check operation

-61 –

TROUBLESHOOTING

4-4. DefectivePrintHeadOperation

NO

*

Check and replace
@ TR1
@ TR2
o Gate array

YES

●

YES

NO

I

Power supply
unit abnormal.
(Refer to item 4-2.)

1
I

Check and replace
@ Gate array

@)

CPU

NO

4

NO

1

Check and replace

@ TR3-1 I

YES

I

Adjust gap
(Refer to chapter 3.)

I

Check and replace

~ Print head

I
L

*8 See (4) waveform in item 8 of chapter 7.

-62-

4-5. DefectiveInterfaceOperation

START

T

TROUBLESHOOTING

I

YES

CheckI/Fcable.

[

Checkandreplace
@IC5
@Gatearray
@CPU

4

Check operation

-63–

I

CHAPTER 7 PARTS LIST

HOW TO USE PARTS LIST

(1) DRWG. NO.

This column shows the drawing number of the illustration.

(2) REVISED EDITION MARK

This column shows a revision number.
Parts that have been added in the revised edition are indicated with “#”.
Parts that have been abolished in the revised edition are indicated with “*”. For example,
#1 : First edition → Second edition #2 : Second edition → Third edition
*1 : First edition → Second edition *2 : Second edition → Third edition

(3) PARTS NO.

Parts numbers must be notified when ordering replacement parts.

(4) PARTS NAME

Parts names must be notified when ordering replacement parts.

(5) Q’TY

This column shows the number of the part used as indicated in the figure.

(6) REMARKS

When there are differences in the specifications of the fuse, destinations, etc., the differences are described in
words or indicated by two letters.

US ..... U.S.A. EC .... EC UK ... United Kingdom HK .......Hong Kong

AS ..... Austraia WG ... Germany LA ... Latin America SU........ Russia

The seal number of ROM is described in this column. The “**” mark of seal number is a variable representing
on the software version.

(7) RANK

Parts marked “S” are service parts. Service parts are recommended to be in stock for maintenance.

1.Printer Assembly .................................. 66

1-1. Disassembly Drawing....................... 66

1-2. Parts List............................................ 67

2.Printer Mechanism ............................... 69

2-1. Disassembly Drawing....................... 69

2-2. Parts List............................................ 70

3.Sub-assembly ....................................... 71

3-1. Lower Case Unit................................ 71

3-2.

Serial-Parallel Converter

(Option).....................................................

3-3. Frame Unit ......................................... 73

3-4 Platen Unit ......................................... 74

3-5. Tractor................................................ 75

72

4.Wiring Scheme of Printer .................... 76

5.Main Logic Board .................................. 78

5-1. Circuit Diagram ................................. 78

5-2. Component Layout ........................... 82

5-3. Parts List............................................ 84

6.Power Supply Unit ................................ 87

6-1. Circuit Diagram ................................. 87

6-2. Component Layout ........................... 88

6-3. Parts List............................................ 89

7.Serial-Parallel Converter Board
(Option)

7-1. Wiring Scheme .................................. 91

7-2. I/F Board ............................................ 92

7-2-1. Circuit Diagram ........................ 92

7-2-2. Component Layout .................. 92

7-3-3. Parts List .................................. 92

7-3. CPU Board ......................................... 93

7-3-1. Circuit Diagram ........................ 93

7-3-2. Component Layout .................. 94

7-3-3. Parts List .................................. 94

................................................... 91

7

– 65 –

1. Printer Assembly

1-1. Disassembly Drawing

– 66 –

1-2. Parts List

Printer Assembly

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
1 89060790 MECHANISM WITH HEAD DP891F 1 S
2 87801010 LOWER CASE UNIT ZL-10 1 S
3 87802010 MAIN LOGIC BOARD UNIT ZL-10 1 EXCEPT FOR HK,SU S

87802080 MAIN LOGIC BOARD UNIT ZL-10 HK 1 FOR HK S

#2 87805250 MAIN LOGIC BD UNIT ZL-10 SU 1 FOR SU S

4 87803010 POWER SUPPLY UNIT ZL-10 US 1 FOR US S

87803030 POWER SUPPLY UNIT ZL-10 EC 1 FOR EC,WG,LA S
87803040 POWER SUPPLY UNIT ZL-10 UK 1 FOR UK S

87803200 POWER SUPPLY UNIT ZL-10 HK 1 FOR HK S
#1 87803270 POWER SUPPLY UNIT ZL-10 AS 1 FOR AS S
#2 87803620 POWER SUPPLY UNIT ZL-10 SU 1 FOR SU S

5 82040070 SUB-GUIDE 891 1 S
6 *3 83023900 UPPER CASE ZL-10 1 S

#3 83023901 UPPER CASE ZL-10 1 S

7 80086660 OPERATION SHEET ZL-10 1 EXCEPT FOR SU S

#2 80087070 OPERATION SHEET SPECIAL ZL-10 1 FOR SU S

8 80083060 BRAND SEAL NX-1001 1 FOR US,HK,LA,SU S

80083160 BRAND SEAL LC-20 1 FOR EC,UK,AS,WG S

9 83023920 PRINTER COVER ZL-10 1 S
10 87806010 PAPER GUIDE UNIT ZL-10 1 S
11 *2 83023930 REAR COVER ZL-10 1 S

*3 83023931 REAR COVER ZL-10 1 S
#3 83023933 REAR COVER ZL-10 1 S

12 83902760 PLATEN KNOB ZL-10 1 S
13 *4 80981560 INK RIBBON CARTRIDGE UP NX1000 1 FOR US,LA S

#4 80980850 INK RIBBON CARTRIDGE UPC LC9 1 FOR US,LA S
*4 80981160 INK RIBBON CARTRIDGE JA NX1000 1 EXCEPT FOR US,LA S
#4 80982290 INK RIBBON CARTRIDGE JAN LC9 1 EXCEPT FOR US,LA S

14 87805010 RELEASE SHAFT UNIT ZL-10 1 S
15 *2 83400800 RELEASE LEVER 891F 1 S

#2 83400801 RELEASE LEVER 891F 1 S

16 *3 80530840 RELEASE LEVER SPRING 891F 1 S
17 *1 83910840 CABLE HOLDER 891 1 S

#1 83910841 CABLE HOLDER 941 1 S

18 *1 82900772 RIBBON HOLDER 891 1 S

#1 82900773 RIBBON HOLDER 891 1 S

19 01903060 SCREW TAT 3-8 PT-FL 2 S
20 *3 01914036 SCREW TR 4-5 WS 2 EXCEPT FOR HK,SU S

#3 01914036 SCREW TR 4-5 WS 2 EXCEPT FOR HK S
*3 01914036 SCREW TR 4-5 WS 1 FOR HK,SU S
#3 01914036 SCREW TR 4-5 WS 1 FOR HK S

21 01914034 SCREW TAT 4-8 CT-WF 3 S
22 *3 01914040 SCREW TAS 4-10C1P 2 FOR US S

#3 01914031 SCREW TAT 4-12 PT-FL 2 FOR US S
*2 01914031 SCREW TAT 4-12 PT-FL 2 EXCEPT FOR US S
*3 01914043 SCREW TAT 4-12 PT WB 2 EXCEPT FOR US S
#3 01914031 SCREW TAT 4-12 PT-FL 2 EXCEPT FOR US S

23 01914031 SCREW TAT 4-12 PT-FL 3 S
24 01914030 SCREW TAT 4-15 PT 4 S
25 04020016 STOP RING SE4.0 1 S
26 89595010 S-P CONVERTER SPC-8K UPC 1 OPTION: FOR US,LA

89595020 S-P CONVERTER SPC-8K JAN 1 OPTION: EXCEPT US,LA

27 *3 80994450 RUBBER SHEET ZL-10 1
28 #2 80087630 SILENT SALESMAN ZL-10 US 1 FOR US

- 89590203 ASF SF-10DR US 1 OPTION: FOR US,LA
89590201 ASF SF-10DR WG 1 OPTION: FOR EC,WG

– 67 –

Printer Assembly

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK

- 89590200 ASF SF-10DR UK 1 OPTION: FOR UK
#1 89590205 ASF SF-10DR AS 1 OPTION: FOR AS

89590206 ASF SF-10DR HK 1 OPTION: FOR HK,SU

– 68 –

2. Printer Mechanism

2-1. Disassembly Drawing

– 69 –

2-2. Parts List

Printer Mechanism

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
1 87060210 FRAME UNIT 891F 1 INC. NO.5,6,11,14,24
2 89130060 PRINT HEAD DP8901F 1 S
3 87061120 CARRIAGE MOTOR UNIT 891F 1 S
4 87067020 BAIL ROLLER SHAFT UNIT 891 1
5 83400440 BAIL LEVER R 891 1 S
6 83400460 BAIL LEVER L 891 1 S
7 87063050 PLATEN UNIT 891B 1 S
8 *2 81370521 TRACTOR STAY 891 1

#2 81370522 TRACTOR STAY 891 1
9 87066010 TRACTOR UNIT 891 1 S
10 87067010 TENSION LEVER UNIT 891 1
11 87065060 DETECTOR ASSY B 891F 1 S
12 83400790 ADJUSTING LEVER 891F 1
13 82401220 INDEX LEVER 891F 1
14 80530510 BAIL LEVER SPRING 891 2 S
15 80530571 GROUND CONTACT SPRING 921 1 S
16 01902612 SCREW TAT 2.6-16 PT 2 S
17 *1 00920503 SCREW TAT 2-5 CT 1 S

#1 00926603 SCREW TAT 2.6-6 CT 1 S
18 00926603 SCREW TAT 2.6-6 CT 1 S
19 00630504 SCREW TR 3-5 2 S
20 01903018 SCREW TR 3-6 WS/WF 1 S
21 01903075 SCREW TBT 3-6 PT 1 S
22 04020016 STOP RING SE4.0 1 S
23 *2 02040403 TOOTHED NUT NHK4 4 S

#2 02020401 HEXAGON NUT NH4-2 4 S
24 87060840 CARRIAGE UNIT 891F 1

- 04991204 FASTENER T18S 1 S

04991230 MINI CORD CLAMP UAMS-05-SN 4 S

– 70 –

3. Sub-assembly

3-1. Lower Case Unit

Lower Case Unit

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
2-1 *1 83023910 LOWER CASE ZL-10 1

*3 83023911 LOWER CASE ZL-10 1

#3 83023912 LOWER CASE ZL-10 1

2-2 82011050 LOWER CASE CHASSIS ZL-10 1
2-3 83200890 HOLDER ROLLER 891F 3
2-4 81301320 ROLLER SHAFT 891 3
2-5 87801320 DETECTOR UNIT A ASSY ZL-10 1 S
2-6 82501150 RELEASE SPRING 891F 3
2-7 00926803 SCREW TAT 2.6-8 PT 1 S
2-8 00930803 SCREW TAT 3-8 PT 2 S
2-9 *2 01903064 SCREW TAT 3-5 CT 1 S

*2 01903094 SCREW TAT 3-5 DT 1 S

- #1 80991610 RUBBER FOOT NB24-10 2

– 71 –

3-2.

Serial-Parallel Converter (Option)

Serial-Parallel Converter

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
26-1 83024060 UPPER CASE SPC-8K 1
26-2 87590010 CPU BOARD UNIT SPC-8K 1
26-3 87590020 IF BOARD UNIT SPC-8K 1
26-4 87591020 LOWER CASE UNIT SPC-8K 1
26-5 82901600 CORD HOLDER SPC-8K 1
26-6 01903047 SCREW TAT 3-12 PT-FL 3
26-7 01903060 SCREW TAT 3-8 PT-FL 1
26-8 #2 82902150 CORD HOLDER PLATE SPC-8K 1

- 09990716 FERRITE CORE HF70RU12X5 2

– 72 –

3-3. Frame Unit

Frame Unit

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
1-1 83910853 GEAR COVER 891 1 S
1-2 *1 83901613 CARD HOLDER 891 1 S

#1 83901614 CARD HOLDER 891 1 S

1-3 *1 83902740 CARRIAGE 891F 1

#1 87060590 CARRIAGE ASSY 891F 1 INCLUDE DRWG.NO.1-4

1-4 *1 80210480 BUSHING 12X14X10 891B 2
1-5 80902050 TIMING BELT HTD102 364X3.2 1
1-6 83100490 IDLER GEAR 43X63X0.3 1 S
1-7 83120450 RIBBON CASSETTE GEAR 891 1 S
1-8 *3 83100501 IDLER GEAR 16X1-40X0.3 1 S

#3 87312460 IDLER ASSY TRX 1 S

1-9 83100541 IDLER GEAR 17X41X0.3 1 S
1-10 82210031 WAVE WASHER 891 1 S
1-11 83400410 CLUTCH LEVER 891 1 S
1-12 87060610 PAPER FEED MOTOR ASSY 891 1 S
1-13 83100510 GEAR 40X0.5 1 S
1-14 83100520 IDLER GEAR 16X72X0.5 1 S
1-15 01903064 SCREW TAT 3-5 CT 2 S
1-16 02304025 POLY-SLIDER WP4X0.25 1 S

– 73 –

3-4. Platen Unit

Platen Unit

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
7-1 *3 80202130 PLATEN 891B 1

#3 80202031 PLATEN 891 1
7-2 80530520 PLATEN GEAR SPRING 891 1
7-3 83100550 PLATEN GEAR A 891 2
7-4 83100560 PLATEN GEAR B 891 1
7-5 83200662 PLATEN HOLDER 891 2 S
7-6 04012502 ROLL PIN SP2.5X12 3 S
7-7 *1 04020014 STOP RING SE6.0 2 S

#1 04020022 STOP RING SE6.0-SUS 2 S
7-8 #1 87063340 PLATEN GEAR ASSY 891B 1 WITH NO.7-2,3,4 S

– 74 –

3-5. Tractor

Tractor

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
9-1 83901620 TRACTOR HOLDER R 891 1 S
9-2 83901631 TRACTOR HOLDER L 891 1 S
9-3 *3 81380440 TRACTOR SHAFT 891 1

#3 81380442 TRACTOR SHAFT 891 1

9-4 *2 81370521 TRACTOR STAY 891 1

#2 81370522 TRACTOR STAY 891 1

9-5 83110110 SPROCKET WHEEL 891 2 S
9-6 83400311 CLAMP LEVER R 831 1 S
9-7 83400321 CLAMP LEVER L 831 1 S
9-8 *3 83901600 SHEET GUIDE 891 1

#3 83901601 SHEET GUIDE 891 1

9-9 83910861 TRACTOR COVER R 891 1 S
9-10 83910871 TRACTOR COVER L 891 1 S
9-11 83110100 TRACTOR CLUTCH 891 1 S
9-12 83100530 TRACTOR GEAR 64X0.5 1 S
9-13 *3 83200650 TRACTOR BUSHING 891 2

#3 83200651 TRACTOR BUSHING 891 2

9-14 02307050 POLY-SLIDER WP7X0.5 2 S
9-15 *3 80520350 SPRING C090-070-0130 1 S

#3 80520351 SPRING C090-070-0130 1 S

9-16 04020017 STOP RING SE5.0 3 S

– 75 –

4. Wiring Scheme of Printer

– 76 –

[Blank page]

– 77 –

5. Main Logic Board

5-1. Circuit Diagram

– 78 –

– 79 –

– 80 –

– 81 –

5-2. Component Layout

– 82 –

– 83 –

5-3. Parts List

Main Logic Board

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
IC1 08250001 CPU M50734SP-10 1 S
IC2 08220116 EPROM 27512-150NS 1 ZL.** :EXCEPT SU S

*2 08223110 MASKED ROM 1.3 ZL-10 1 :EXCEPT SU S

#2 08223111 MASKED ROM 1.5 ZL-10 1 :EXCEPT SU S

#2 08220116 EPROM 27512-150NS 1 ZL.**.SU :FOR SU S

09110024 IC SOCKET ICS-28-2T 1
IC3 08221002 SRAM HM6264P-100NS 1 S
IC4 08240013 GATE ARRAY D65006CW-LC2 1 S
IC5 08210017 TTL IC 74LS05 1
IC6 08200109 IC-RESET M51953BL 1 S
TR1 07011752 TRANSISTOR 2SA1266* 1
TR2 07227853 TRANSISTOR 2SC1740SE 1
TR3-11 07320411 TRANSISTOR 2SD2041 9 S
TR12 07227853 TRANSISTOR 2SC1740SE 1
TR13 07111682 TRANSISTOR 2SB1168 1 S
TR14-17 07320101 TRANSISTOR 2SD2010 4 S
TR18 07113871 TRANSISTOR 2SB1387TZ 1 S
TR19 07227853 TRANSISTOR 2SC1740SE 1
TA1 07650036 TRANSISTOR ARRAY STA435A 1 S
D1 08000044 DIODE 1SR139-100AT 1
D2 NOT USED
D3 08000044 DIODE 1SR139-100AT 1
R1-2 06051034 RD RESISTOR 10 K-OHM 1/6W 2
R3-4 06054725 RD RESISTOR 4.7 K-OHM 1/6W 2
R5 06052714 RD RESISTOR 270 OHM 1/6W 1
R6 06054725 RD RESISTOR 4.7 K-OHM 1/6W 1
R7 06051025 RD RESISTOR 1 K-OHM 1/6W 1
R8 06051014 RD RESISTOR 100 OHM 1/6W 1
R9 06051025 RD RESISTOR 1 K-OHM 1/6W 1
R10-17 06054725 RD RESISTOR 4.7 K-OHM 1/6W 8
R18-19 06052714 RD RESISTOR 270 OHM 1/6W 2
R20 06051525 RD RESISTOR 1.5 K-OHM 1/6W 1
R21 NOT MOUNTED
R22-25 06054725 RD RESISTOR 4.7 K-OHM 1/6W 4
R26 06051034 RD RESISTOR 10 K-OHM 1/6W 1
R27 06052224 RD RESISTOR 2.2 K-OHM 1/6W 1
R28 06051034 RD RESISTOR 10 K-OHM 1/6W 1
R29 06054725 RD RESISTOR 4.7 K-OHM 1/6W 1
R30 06058224 RD RESISTOR 8.2 K-OHM 1/6W 1
R31 06054725 RD RESISTOR 4.7 K-OHM 1/6W 1
R32 06058224 RD RESISTOR 8.2 K-OHM 1/6W 1
R33-34 06054725 RD RESISTOR 4.7 K-OHM 1/6W 2
R35-36 06052714 RD RESISTOR 270 OHM 1/6W 2
R37 06051051 RD RESISTOR 1 M-OHM 1/6W 1
R38-42 06053314 RD RESISTOR 330 OHM 1/6W 5
R43-46 06043315 RD RESISTOR 330 OHM 1/4W 4
R47-54 06051025 RD RESISTOR 1 K-OHM 1/6W 8
R55 *1 06251034 RN RESISTOR 10 K-OHM 1/6W 1

#1 06241034 RN RESISTOR 10 K-OHM 1/4W 1% 1
R56 06054725 RD RESISTOR 4.7 K-OHM 1/6W 1
R57 06051034 RD RESISTOR 10 K-OHM 1/6W 1
R58 06205611 RN RESISTOR 560 OHM 2W 1
R59 06051034 RD RESISTOR 10 K-OHM 1/6W 1
R60 06220684 RN RESISTOR 6.8 OHM 1/2W 1
R61 06051034 RD RESISTOR 10 K-OHM 1/6W 1

R62 06054725 RD RESISTOR 4.7 K-OHM 1/6W 1

– 84 –

Main Logic Board

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
R63 06051034 RD RESISTOR 10 K-OHM 1/6W 1
R64 06054725 RD RESISTOR 4.7 K-OHM 1/6W 1
R65-67 06051034 RD RESISTOR 10 K-OHM 1/6W 3
R68 06200274 RN RESISTOR 2.7 OHM 2W 2% 1
R69 06051014 RD RESISTOR 100 OHM 1/6W 1
R70-77 06054714 RD RESISTOR 470 OHM 1/6W 8
R201-210 06052714 RD RESISTOR 270 OHM 1/6W 10
RA1 06584729 RESIS. ARRAY 4.7K-OHM 1/8W 8EL 1
RA2 06581823 RESIS. ARRAY 1.8K-OHM 1/8W 6EL 1
RA3 06584720 RESIS. ARRAY 4.7K-OHM 1/8W 4EL 1
RA4 06581028 RESIS. ARRAY 1 K-OHM 1/8W 9EL 1
RA5 06584729 RESIS. ARRAY 4.7K-OHM 1/8W 8EL 1
C1 05152212 CERA. CAPA. 220PF 50V 1
C2 05552214 CAPACITOR 220PF 50V 1
C3 05131044 CERA. CAPA. 0.1UF 25V 1
C4 05154723 CERA. CAPA. 4700PF 50V 1
C5-6 05152234 CERA. CAPA. 0.022UF 50V 2
C7 05552214 CAPACITOR 220PF 50V 1
C8 05131044 CERA. CAPA. 0.1UF 25V 1
C9 NOT USED
C10 05152234 CERA. CAPA. 0.022UF 50V 1
C11 05131044 CERA. CAPA. 0.1UF 25V 1
C12 05152234 CERA. CAPA. 0.022UF 50V 1
C13 05154714 CERA. CAPA. 470PF 50V 1
C14 05152212 CERA. CAPA. 220PF 50V 1
C15 05131044 CERA. CAPA. 0.1UF 25V 1
C16 05551044 CAPACITOR 0.1UF 50V 1
C17 05152212 CERA. CAPA. 220PF 50V 1
C18 NOT MOUNTED
C19-20 05532234 CAPACITOR 0.022UF 25V 2
C21-22 05552214 CAPACITOR 220PF 50V 2
C23 05131044 CERA. CAPA. 0.1UF 25V 1
C24 05532234 CAPACITOR 0.022UF 25V 1
C25 05152234 CERA. CAPA. 0.022UF 50V 1
C26-27 NOT MOUNTED
C28 05131044 CERA. CAPA. 0.1UF 25V 1 EXCEPT FOR HK,SU

NOT MOUNTED :HK,SU

C29 05252232 FILM CAPA. 0.022UF 50V 1 EXCEPT FOR HK,SU

NOT MOUNTED :HK,SU
CA1-2 05651012 CAPA. ARRAY 100PF 50V 8EL 2
DSW1 *1 09090034 DIP SWITCH KSS08-1 1

#1 09090046 DIP SWITCH EAH108L-BLK 1

DSW2 *1 09090033 DIP SWITCH KSS04-1 1

#1 09090045 DIP SWITCH EAH104L-BLK 1
XTAL1 09250035 CERA. OSCILLATOR CST10.0MT 1
LED1 08300055 LED LT-1H11A 1
LED2-10 08300058 LED LT-1E21A 9
SW1-4 09010043 PUSH SWITCH SKHHAL=S 4
CN1 09100457 CONNECTOR 57L-40360-770B-D29 1
CN2 *1 09100342 CONNECTOR 53014-0410 1

*3 09100476 CONNECTOR 53014-0470 1

#3 09100342 CONNECTOR 53014-0410 1
CN3 09100464 CONNECTOR 5062-16 1
CN4 *1 09100342 CONNECTOR 53014-0410 1

*3 09100476 CONNECTOR 53014-0470 1

#3 09100342 CONNECTOR 53014-0410 1

– 85 –

Main Logic Board

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK

CN5 09100317 CONNECTOR 5483-04A 1
CN6 09100267 CONNECTOR 5483-06A 1
CN7 09100278 CONNECTOR 5483-06A-RED 1
CN8 09100384 CONNECTOR HLEM15S-2 1
CN9 09100464 CONNECTOR 5062-16 1

80703201 CABLE UNIT 16X180 ZL-10 1

JW1 *3 80701170 WIRE 20UL1007BLK230 1

#3 87770070 CABLE UNIT 01X230 (D) 1
J1-42 93930006 JUMPER WIRE STP122 42
J43 NOT USED
J44-59 93930006 JUMPER WIRE STP122 16
J60-63 NOT USED
J64-96 93930006 JUMPER WIRE STP122 33
J97 NOT USED
J98-99 93930006 JUMPER WIRE STP122 2
J201-205 93930006 JUMPER WIRE STP122 5

- *3 80086510 BOARD ID SEAL HK 1 FOR HK,SU

Note 1: As of March, 1993 the program ROM version on IC2 is shown below.If a ROM other than those described
below is mounted, the performance of the printer may differ from that described this manual.

Version Kind Remark

1.5 Masked ROM Except for Russian version Production
ZL.1.7 EPROM Except for Russian version Maintenance
ZL.1.6.SU EPROM For Russian version. Production/Maintenance

– 86 –

6.Power Supply Unit

6-1. Circuit Diagram

– 87 –

6-2. Component Layout

Old Board New Board

– 88 –

6-3. Parts List

Power Supply Unit

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK

IC1 08202008 IC-REG L4960 1 S
IC2 08202013 IC-REG L4941 1 S
D1 08030016 SCHOTTKY DIODE ERB84-009 1 S
R1 06041035 RD RESISTOR 10 K-OHM 1/4W 1
R2 06041034 RD RESISTOR 10 K-OHM 1/4W 1
R3 06242034 RN RESISTOR 20 K-OHM 1/4W 1% 1
R4 06245124 RN RESISTOR 5110 OHM 1/4W 1
C1 *3 05291044 FILM CAPA. 0.1UF 250V 1

#3 05291045 FILM CAPA. 0.1UF 275V 1

C2-3 05192224 CERA. CAPA. 2200PF 400V 2 EXCEPT FOR HK,SU

NOT MOUNTED :HK,SU
C4 05054782 CHEM. CAPA. 4700UF 50V 1
C5 05155614 CERA. CAPA. 560PF 50V 1
C6 05252224 FILM CAPA. 2200PF 50V 1
C7 05154714 CERA. CAPA. 470PF 50V 1
C8 05251044 FILM CAPA. 0.1UF 50V 1
C9 05043385 CHEM. CAPA. 3300UF 35V 1
C10 05024781 CHEM. CAPA. 4700UF 16V 1
C11 05152234 CERA. CAPA. 0.022UF 50V 1
C12 05022271 CHEM. CAPA. 220UF 16V 1
DB1 *3 08990220 DIODE STACK D3SB10 1 S

#3 08990227 DIODE STACK D3SB20 1 S
DB2 08990221 DIODE STACK 1B4B41 1 S
T1 *2 09240710 TRANSFORMER 120V ZL-10-TB US 1 FOR US

#2 09240711 TRANSFORMER 120V ZL-10-TB US 1 FOR US

09240720 TRANSFORMER 220V ZL-10-P EC 1 FOR EC,HK,WG,LA,SU

09240730 TRANSFORMER 240V ZL-10-P UK 1 FOR UK,AS
L1 09251106 LINE FILTER SU10V-05050 1
L2 09251023 CHOKE COIL SK15BS045-300 1
F1 09990058 FUSE 5TT1A 250V 1 FOR US S

09990021 FUSE EAWK630MA 250V 1 EXCEPT FOR US S
F2-3 09990054 FUSE 5TT3A 125V 2 FOR US,UK,AS S

09990050 FUSE EAK3.15A 250V 2 FOR EC,HK,WG,LA,SU S

- *3 09110098 CORD SET US-PN ZX-10CL 1 FOR US

#3 09110144 CORD SET US-PN HA-10 1 FOR US
*3 09110099 CORD SET EC-PN ZX-10CL 1 FOR EC,WG,LA
*4 09110099 CORD SET EC-PN ZX-10CL 1 FOR WG,LA
#4 09110143 CORD SET EC-PN HA-10 1 FOR WG,LA
#3 09110143 CORD SET EC-PN HA-10 1 FOR EC

09110067 CORD SET UK-PN LC 1 FOR UK

*2 09110067 CORD SET UK-PN LC 1 FOR HK
#2 09110136 CORD SET HK-PN QBA 1 FOR HK
#1 09110068 CORD SET AS-PN LC 1 FOR AS
#2 09110060 CORD SET SV-PN L=2M 1 FOR SU

09030019 SEESAW SWITCH T-881SBSS-A1 1

*2 04033002 SCREW RIVET 1712-3007 2 FOR IC1,2 :NOTE1
#2 01903035 SCREW TR 3-10 FL 1 FOR IC1,2
#2 82090350 TRANSISTOR HOLDER PLATE R-10 1 FOR IC1,2

04033202 RIVET 1801-0408 2 FOR RADIATION PLATE

04991204 FASTENER T18S 3 FOR US,EC,WG,LA

04991204 FASTENER T18S 2 FOR UK,HK,AS,SU

04991219 CORD BUSHING SR-4N-4 1 FOR US,SU

04991220 CORD BUSHING SR-5N-4 1 EXCEPT FOR US,SU

09990023 FUSE HOLDER UF-0033 6

80701060 WIRE 20UL1015BLK105T 2

80702240 CABLE UNIT 4X60 1

– 89 –

Power Supply Unit

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK

- 80703120 CABLE UNIT 4X60 ZX-10CL 1
*3 80924691 WIRE 18UL1015G/Y100TT 1 EXCEPT FOR HK,SU
*4 87770060 CABLE UNIT 01X100TT A (D) 1 EXCEPT FOR HK,SU
#4 80705750 CABLE UNIT 01X100TT (A) 1 EXCEPT FOR HK,SU
*3 82020440 POWER CORD COVER ZL-10 1
#3 82020441 POWER CORD COVER ZL-10 1

82911110 RADIATION PLATE ZX-10CL 1
93930006 JUMPER WIRE STP122 6

Note 1: This screw is retightened wuth a 1/16" hexagon screw driver.

– 90 –

7.Serial-Parallel Converter Board (Option)

7-1. Wiring Scheme

– 91 –

7-2. I/F Board

7-2-1. Circuit Diagram

7-2-2. Component Layout

7-2-3. Parts List

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
IC101 08200125 IC-I/F LT1081CN 1
IC102 08200109 IC-RESET M51953BL 1
R101 06053324 RD RESISTOR 3.3 K-OHM 1/6W 1
C101-104 05034758 CHEM. CAPA. 4.7UF 25V 4
C105 05551044 CAPACITOR 0.1UF 50V 1
CN101 09100461 CONNECTOR DBLC-J25SAF-23L8 1
CN102 09100462 CONNECTOR 5532-08A 1
J101-108 93930006 JUMPER WIRE STP122 8 P=10mm

– 92 –

7-3. CPU Board

7-3-1. Circuit Diagram

– 93 –

7-3-2. Component Layout

[Parts side] [Solder side]

7-3-3. Parts List

CPU Board

DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK

IC1 08250011 MASKED CPU HD63B01YF-IF 1

IC2 08221021 SRAM HM6264LFP-100NS 1

TR1 07603007 DIGITAL TRANSISTOR RTIN434C-T 1

R1 06754721 CHIP RESISTOR 4.7 K-OHM 1/10W 1

R2-4 06751021 CHIP RESISTOR 1 K-OHM 1/10W 3

R5 06754721 CHIP RESISTOR 4.7 K-OHM 1/10W 1

R6-7 06783313 CHIP RESISTOR 330 OHM 1/8W 2

R8 06754721 CHIP RESISTOR 4.7 K-OHM 1/10W 1

RA1 06564721 RESIS. ARRAY 4.7K-OHM 1/16W8EL 1

C1 05731042 CERA. CAPA. CHIP 0.1UF 25V 1

C2 05514751 TANTALUM CAPA. CHIP 4.7UF 10V 1

C3 05731042 CERA. CAPA. CHIP 0.1UF 25V 1

C4 NOT USED

C5-6 05751025 CERA. CAPA. CHIP 1000PF 50V 2

XTAL1 09250039 CERA. OSCILLATOR EFO-W4914B5 1

DSW1 09090018 DIP SWITCH KSD08 1

SW1 09010047 PUSH SWITCH SKHHLS0001 1

CN1A-1B 80706070 INTERFACE CABLE SPC-8K 1

CN2 09100463 CONNECTOR 5533-08CPB 1

– 94 –

HEAD QUARTERS
STAR MICRONICS CO., LTD. JAPAN

536 Nanatsushinya, Shimizu,
Shizuoka, 424, Japan

Tel: [phone]
Telefax: 0543-48-5013

OVERSEAS SUBSIDIARY COMPANIES
STAR MICRONICS AMERICA INC.

70-D Ethel Road West.
Piscataway, NJ 08854-5950, U.S.A
Tel: [phone]
Telefax: 732-572-5693

STAR MICRONICS U.K.LTD.

Star House, Peregrine Business
Park, Gomm Road, High Wycombe
Bucks, HP13 7DL U.K.
Tel: [phone]
Telefax: 01494-473333

STAR MICRONICS PTY. LTD.

Unit A/107-115 Asquith Street,
Silverwater, NSW 2141
Australia
Tel: [phone]
Telefax: 02-748-3527

Distributed by

STAR MICRONICS ASIA LTD.

18/F., Tower II, Enterprise Square
9 Sheung Yuet Road, Kowloon Bay
Hong Kong
Tel: [phone]
Telefax: 2799-9344

– 95 –

STAR MICRONICS (N.Z.) LTD.

64 Lunn Ave. Mount Wellington
P.O. Box 6255, Wellesley St.,
Auckland, New Zealand.
Tel: [phone]
Telefax: 570-1448

Printed in Japan, 80823335

ZL