SHARP DP-730 Service Manual

DP”730

SHARP SERVICEMANUAL

.

CODE : OOZDP730 SM/-E

A

SERIAL DOT MATRIX

PRINTER

MODEL DP-730

Sect ion 1

Sect ion

Sect ion 3
Sect ion 4
Sect ion 5

lking and Maintaining the Pr inter

Specif icat ions and Principle Operation

2

Disass*ly and Re-ass*ly

Troubleshootim

Timing Chart

Parts Lists :(Ki-~6778Rczz)

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

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

‘-----------------------------------------11

..-.-.-----.----..-----.--..—.

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

1

2

28
35

This document has been published to be used for after sales service only.
Thp contents are subiect to chanue without notice-

SHARP CORPORATION

Foreword

This manual describes theprinciple of operation and themaintenance procedure for DP730 Series

Citizen Dot

Nlatrix Printers. It is intended for maintenance technicians in the field.

Features

The DP730 series printers are station printers that are provided with a 45 mm x 2 printing function.

These printers have been developed for POS/ECR use. They have the following features.

* A high performance 9-pin head is provided, realizing a high printing speed of s.() lines/second

and high print quality.

* The printer is compact, light and low priced. This has been realized as a result of rational

mechanical design.

* A clamshell mechanism (opening and closing mechanism of the paper guide) is employed. resulting

in improved paper loading performance and maintainability.
* A pull type paper feed mechanism is employed for minimizing paper jams.
* A wide range of option mechanisms is available.

(Stamp, auto cutter, take-up unit, paper feed unit. validation sensor, receipt/journal near end sensor,)

Tableof Contents

Section 1

Section

Section

Using and Maintaining the Printer

Specifications and Principle of Operation

2

General Specifications ~ti._=-~~~~~ti~~~.~~~~~~~~~ . . . . . . . . . . . . . ..

2-1

Outline of Mechanisms ~~~.~...~~ti..t~.~.~..~-. ~.-_..-~.~..~HHm

2-2

Mechanisms and Principle of Operation ....~........~...~~..uo .un

2-3

2-3-1 Powertransmission mechanism

2-3-2 Sensor mechanism .. . .. ..

2-3-3 Print head mechanism .. . ... ..

2-3-4 Paper feed mechanism .~.~.~~..~.v~fium..~.~._.._.~K.~.~.~..n-...m

2-3-5 Ribbon cassette mechanism .._.~.__.~ti~_..~~.ti~.~_~_._ ~~.........

2-3-6 Papertake-up mechanism ............................................................

2-3-7 Stamp mechanism .~~...~ti~~ti~.fi_~.~ti~..-....~ti~.~~..._f~o~m._...._

2-3-8 Auto cutter mechanism (option) ....................................................

2-4

External Connectors ....ti~........~....~... ......~~....ti~ui~u

Disassembly and Re-assembly ....................................................

3

List of Tools and Measuring Instruments

3-1

Disassembly Procedure ..~.._ti..m..m.mmm_mm_mmtimmi.m..utic.n..m.ti..~...~......

3-2

Assembly Procedure

3-3

Adjustment Procedure

3-4

3-4-1 Printing speed adjustment .ti..nnmu.~mo.m..~m..~m.~mm.~.m....n._HH

3-4-2 Platen/head gap adjustment .~-fi.~H_nmmtim_-fitiHmM_mnnmHMUO.

3-4-3 Bi-directional printing error adjustment ................~ . .

3-4-4 RP/HP waveform confirmation
3-4-5 Validation sensoradjustment

3-4-6 Paper nearend sensor adjustment ..~.u.mom..~...n.u....n.

Replacing the Head Assembly

3-5

3-5-1 Removal procedure
3-5-2 Assembly procedure

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

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

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

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

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

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

. __..~.~~~~ti.~~.~..~~..~..~.~_fi.._....u

..~~~~.~~.~....ti~~.~~~~u~...u.O....m

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

. ~~~._~-_-

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

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

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

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

1

2

.

2
4
4
4

4
5
6
6
7
8
8
9
9
9

10

11

11
11

11
23
23
24
24
25
25
25
26
26
27

Section

Section

4

Troubleshooting

4-1 Repair Procedure
4-2 Repair Guide

5

Timing Chart

Parts Lists

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

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

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

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

.

29

29
29

35

Section 1 Using and Maintaining the Printer

(1)

The print quality and life of the printer cannot be

guaranteed ifyou use recording

recommendedtype.

of a width that is within the specification

paper

range.

(2)

Do not apply a mechanical impact (including­ingress of foreign matter) to the surface of tie head-

(3)

Gently wipe off dirt adhering to the surface of the
head using a cotton stick moistened with ethanol ora
similar solvent.

(4)

Remove the dedicated ribbon cartridge before
transporting the printer or when not using it for a
long period.

(5)

If youenergize the head while there is condensation
on it, you may damage it as a result. If there is
condensation on the head, dry it thoroughly before
using the printer.

(6)

Loading the recording paper

* Cut the end of the recording paper squarely and

insert it into the printer. Do not insert the end of
the paper if it is fuzzy or creased.

* When the end of the paper appears above the

head, verify that it is set straight, then pull
forward the end of the paper.

Also, be suretouserecording

paperotherthanthe

(7) Removing therecording paper

*

Remove the recording paper after the printer has
stopped.

*

Pull out the paper in the direction in which the
end is facing.

Section 2 Specifications and Principle of Operation

2-1 General Specifications

Item

‘rintin: method

‘rintingdirection
‘rinting speed

Total number
of dots

Basic character
compos]tlon

‘rin(ingfomat

Basic number
of digits

Character
dimensions

Spacing
Paperfeeddirection

‘aper feed

Paper feed pitch
Fast feed speed Approx. 30.0 linesjsecond

nking

Number of wires

?rint head

Wire diameter
Dot pulse

>etection
‘unction

Reset pulse
Home position
Validation
Near end

‘aper feed
;olenoid

‘rint solenoid

Drive voltage
Resistance
Drive voltage
Resistance

betweendigits

Specification

Serial impact dot matrix method

Bi-directional printing

Approx. 3.0 lines *109’/second

Receipt side: 108dots/216 positions

Journal side: 108dots~216positions

Validation: 248 dots/495 positions

7 x 7 or 7 x 9(when halfdot is used)

Receipt: 24 digits

Journal: 24 digits

Validation: 55 digits

1.36 (width)

1.36 (width)

x 2.4 (height) mm: For 7 x 7 dots

x 3.1 (height) mm: For 7 x 9 dots

1.59mm

Friction method; Receiptijoumal independent feed

4.23 mm ~]07C (]/6 inch)

Dedicated ribbon cartridge (Single color: Purple)

9

# 0.3 mm
Photo interrupter
Photo interrupter
Photo interrupter
Photo interrupter

Microswitch

DC 24.0 V tlO%

34 Q i lO% (at

25°C)

DC 24.0 V kl 070

10.5Q flO% (at 25°C)

Remarks

~Q,CIVDC.25°Ccontinuousprinting

Spacebetweencharacters=2positions

Option

Stamp trigger Drive voltage
solenoid

Resistance

Cutter trigger Drive voltage
solenoid

Resistance
T>?pe
Drive voltage

Motor

Peakcurrent
Average

current

DC 24.0 V~10%

34 ~ ~10% (at 25°C)

DC 24.0 V ~10%

34 Q tlo~ (at 25”C)

DC brush motor

DC 24.0 V 310%

Approx. 1.6A

Approx. 0.45 A max

Option

Whenstartedat 24.0VDC.25°C
Duririgcontinuous printing at

24.0 VDC, 25°C

Item Specification Remarks

?ecording
)aper

Roll paper’
Validationpaper

Stamp
I’&e-up unit
~onnection method

Reliability

Mechanism
Head life

Operation
Working
:nvironment

environment

Storage

temperature
Insulation withstand voltage

Vibration resistance
impact resistance

External dimensions

Weight

Width: 44.5 N.5 mm O.D.: Max 80 mm

135to 210 mm (width)

x 70 mm min (height)

Stamp cassette removal method

Integral with the main body

Pin connector

MCBF: 4 million lines

100million characters (200 million dots/pin)

Temperature: Oto 50*C:

Humidity: 10 to 90%RH; If the temperature is

39*C or above, the humidity is equivalent to 8576.

Temperature: -25 to 70”C:

Humidity: 40*C90%RH for 96 hours thededicatedribboncartridge.

300 VAC for 1minute, 2 mA

6 G, Frequency 15 to 55 Hz

60Gfor11ms.ineachofX,YandZdirections,3timeseach(totalof9times)

150(W) x 230.3 (D) x 150.7 (H) mm (A type)
150(W) x 234.6 (D) x 123.7 (H) mm (B type)

Approx. 1,250g

1-linevalidation

LOgO stamp: To be

obtain%dby the customer

N-ocondensation

theprinter~vithoutloading

Store

Including take-up unit

3

n n Outline of Mechanisms

The mechanisms of this printer are broadly
divided into the following 10blocks.

*

Power transmission mechanism

*

Sensor mechanism

*

Print head mechanism

*

Recording paper feed mechanism

*

Ribbon cassette mechanism

*

Recording paper take-up mechanism

7

Stamp mechanism

*

Auto cutter mechanism (option)

*

Frame

*

Motor
For details of an external circuit connected to this
printer, refer to the relevant instruction manual.

Mechanisms and Principle of
Operation

The mechanism and principle of operation of 8 of
the above 10 blocks other than the frame and
motor are described below.

Power transmission mechanism

This mechanism transmits drive power from the
motor ass -y to the print head mechanism via a

bevel gear. to the recording paper feed mechanism
and the auto cutter mechanism via the PF gear, to
the ribbon cartridge mechanism via a worm wheel,
to the recording paper take-up mechanism via the

winder

the stamp drive gear.

I

pulley. and to the stamp mechanism via

PF gear

\

Idle gears 2

k \/

Winder pulley

I

2-3-2

Sensor mechanism ‘

The sensor mechanism has four sensors, the dot

pulsesensor (DP), home position sensor (HP),

reset pulse sensor (RP) and validation sensor.

Dot pulse sensor/home position sensor

(1)

Main PCBass’y

/

Home position sensor (HP)

I

Dot pulse

(2) Reset pulse sensor

sensor (DP)

Head ass’y

\

\\

\

Motor ass’y

I

Motor ass’y

Moto; gear

Reduction gear 1

Redjction

gear 2

\

Reduction

gear 3

Reduction

gear 4

Main PCB ass’y

Carriage

4

(3) Validation sensor (option)

.

(2) Print data and print position

Validation card

41

I

Validation sensor

/

2-3-3 Print head mechanism

(1) Print control

Printing takes place when the print head. which
has 9 print solenoids, moves left and right.
Theprint timing is controlled by the homeposition
sensor (HP), dot pulse sensor (DP) and the reset
pulse sensor (RP).

Partialcutenergizationposition

1 I

f-- — Print F —-

.

-

PrintH ~

~ Print I +—

-————-————

,

-

Stamp ,

I

—

g

Full cutene{gizedposition

+

(3) Head drive mechanism

Head ass’y

Carriage drive

pulley

\ \

Partialcutpapercuttingposit[on

+

x-

b

\

i
\

‘1

~

I

,,
; \,

Full C(papercutttngposltlon

Carriage

Energized O
Energized O
Energized ~

Energized ~
Energized 0
Energized O
Energized ~
Energized ~
Energized O

HP M

DP M

RP 04

Print head

7

Pr!nt solenoid #l
Print solenoid #2
Print solenoid #3

~fPrint solenoid #4]

Print solenoid #5

*{Print solenoid #6
~Print solenoid ?#7
*[Print solenoid #8

~Print solenoid #9

b

Home position sensor

Dot pulse sensor

Reset pulse sensor

5

Timing belt assiy

Carriage drive pulley-

Carriage drive gear

An

/“’”/

Bevel gear 1

/

Bevel gear 2

,

(4) Print drive mechanism

2-3-5 Ribbon cassette mechankm

(1) Ribbon feed mechanism

Wire spring

Print wire

I

/

Nose ass’y

Armature

Solenoid ass’y

2-3-4 Paper feed mechanism

(1) Paper feed mechanism

.—

\,

\

I

Armature stopper

\

Armature spring

I

I

Ribbon cassette

\

\

Worm wheel

Ribbon drive shaft

0

Ribbon drive gear

4

Reduction gear I

Pressure rollers

I

/

/

/

Idle gear 2

\

PF gear

Y

PF armatures

PF latches

PF solenoid ass’ys

——

I

I

)

6

2-3-6 Paper take-up mechanism

(1) Paper take-up mechanism

spool \

(3) Take-up mechanism

/’

)

/. —.

\

Spool holder ass’y

(2) Near end detection mechanism

gear

Type which is lower than the height of the main body

Rollpapercoreholecenter

(whendiameterISlarge)

---- .—.—.—.—.—.—.——
.

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

(,.1

/ \

Roilpaper

(whendiameterISsmall)

coreholecenter

Swikh holder

Roll paper

\

\

/’”

J=--

/ ‘\

End switch lever

Microswitch

I

/

\

7

2-3-7 Stamp mechanism

Stamp cover

\

4

Stamp case

Stamp cam /

Stamp drivegear

Stamp

/

Stamp latch

/

2-3-8 Auto cutter mechanism (option)

Cutterguide plate

/

PFgear

*

Cutter”shafi

/
t

I

1

Cutter armature

/

\

Cutter solenoid

2-4 External Connectors

2-4-2 Terminal function

.

Terminallayout

2-4-1

(Connectortype)
Printerside: Molex 5342-30T2
Userside: Molex 5320-30AT2

(Pin layout drawing)

29

❑ a ❑ --------------o-- ------------0 n o

❑ 0 Q--------------o-- ------------a D a

30

}

t

;rmiflal

No

1

2

3

1

4

Terminai name

Printsolenoid#3

Motor (-)

Print solenoid#7

Motor ON/OFF signal

5 Print solenoid COM.

Function

VMCOM.

Vs

6 Homepositionsensoroutput

2

7 Print solenoid COM. Vs
8 Dot pulse sensor output

9
10 Motor(+)
11

Print solenoid#5

+VM(+24V)

Print solenoid#2
12
13 Print solenoid#l
14

15 Print solenoid#9
16 Stamp solenoid
17 Print solenoid COM. Vs
18

Cutter solenoid

Option

19 Print solenoid#8

20 Paperfeed solenoid (J)

21
22 Paperfeed solenoid(R)
23 Print solenoid COM.
24

25
26
27 Validationsensoroutput(R
28

Print solenoid#4

Vs

GND

Print solenoid#6

Reset pulse sensor output

) oP~on

29

Validationsensoroutput(J

30

+5V

) Option

9

2-4-3 Terminal circuit diagram

Print solenoid #3
Motor (-) 24 V GND
Print solenoid #7
Motor ON/OFF signal
Print solenoid COM (VS)
H.P. (home position pulse)
Print solenoid COM (VS)
D.P. (dot pulse)
Print solenoid #5
Motor (+) (+24 V)

3

0

4

0

5

0

6

0

7

0

8

0

9

0

4

2SD

1637

1

11

—

.

Print solenoid #2
Unused
Print solenoid #1
Unused
Print solenoid #9
Stamp solenoid
Print solenoid COM (VS)
Cutter solenoid (Option)
Print solenoid #8
Paper feed solenoid (J)
Print solenoid #4

Paper feed solenoid (R)
Print solenoid COM (VS)
GND
Print solenoid #6
RP (reset pulse)

11

o

12

0

13

0

14

0

19

o

20

0

21

o

150Q

+

1 kQ

C945

b

- The photointet?upteris
GP1S23 or RPI-243.

Unused

Unused (RP)

v

+5

Validation detector (J side)

(Option)

28

o

29

o

30

o

10

)

1

1

2 kQ

I

I

I

I

Section 3 Disassembly and Re-assembly

Be careful of the following items when maintaining the
printer.

~ Caution

(1)

If the printer operates satisfactorily, do not
unnecessarily disassemble and re-assemble
it, or adjust it. Particularly, do not needlessly
slacken any of the mounting screws.

(2)

Before switching on the printer after an
inspection, check it to ensure that there are no
abnormalities.

(3)

NEVER operate the printer without loading

recording paper.

(4)

Verify that the recording paper has been

loaded correctly.

When carrying out maintenance on the

(5)

printer, take care not to leave parts or screws

inside it.

(6)

When disassembling and re-assembling the

printer, inspect it to ensure that the wires and
cords are not damaged, and take care not to
route them in an unreasonable way.

(1) Screw a nut on each mounting screw (M3xI0 hex

screw), and install the mounting screws in the
paper guide (U), ensuring that the nuts coincide
with the V cut

Mounting screw

Nut

#

partofthepaperguide(U),

I

/

ListofToolsandMeasuringInstruments

3-1

Phillips screwdriver

1.

2. Screwdriver

3. Tweezers

4. Mini radio pliers

5. Oiling brush

3-2

Disassembly Procedure

To disassemble the printer, remove each part from
the frame in the opposite sequence to 3-3
“Assembly Procedure”.

3-3

Assembly Procedure

The following assembly procedure assumes that
each ass’y has already been assembled. It covers
only the assembly of the main body. For the
method of assembling each ass’y, refer to the

exploded drawings in Section 5 “Parts Lists”.
The part names used in the explanatory text are
those indicated in Section 5 ‘-Parts Lists.’. These
part names are used in common throughout this
service manual:

6. Mini cutting nipper

7. Hex wrench (H3)

8. Tester

9. Oscilloscope

10.Thicknessgauge(O.5

mm)

(2) Install the pressure roller springs (L) and (R) on

left and right sides of the PF housing, then install
the platen ass’y.

Pressure roller

spring (L)

Pressure roller
spring (R) .

\

PF housing

11

(3) Install the PFhousing onwhich thep]atenass’y

has been installed, on the paper guide (U), and fix
it with three mounting scrwes (M3x8).

Caution 1. WheninstallingthePF housing, push it in

until the four hooks of the paper guide are
fully engaged.

2. Fix the two mounting scre~~s A after

o

adjusting the head gap.

1

PF clutch spring

6

*

I

c+

I

“30

I

%%

Mounting screw

PF housing

Hooks

~b

Paper guide (U)

,,

~-

E

(4) Apply Mori LG-S No. 1 grease to the entire

surface of the mounting part for the clutch spring
on the PF shaft receipt side.

Caution 1. The grooved part of the PF shaft is the

receipt side, the ,grooveless part is the

journal side.

2. Mori LG-S No.1 grease should be applied
on a surface extending about 30 mm from
the shaft end of the receipt side.

(5) Apply Mori LG-S No.1 grease to the inside of the

PF clutch spring, then install the clutch spring to
its mounting part on the receipt side of the PF
shaft.

Caution 1. The PF clutch spring can be installed

smoothly’by turning it in the slackening

direction.

(6) Install the receipt PF roller ass’~ and the journal

PF latch from the journal side on the PF shaft.

Caution 1. Make sure that the mounting directions of

the PF roller ass’y and the PF latch are

correct.

PF shaft

Receipt PF roller ass’y

Journal PF latch ‘

(7) Apply Mori LG-S No. 1 grease to the entire

surface of the mounting part for the clutch spring

on the PF shaft’s journal side.

Caution I. Mori LG-S No.] grease should be applied

on a surface extending about 60 mm from
the shaft end of the journal side.

(8) Appl} Mori LG-S No.] grease to the inside of the

PF clutch spring, then install the clutch spring to
its mounting part on the journal side of the PF
shaft.

Caution 1. The PF clutch spring can be installed

smoothl}’ by turning it in the slackening
direction.

(9) Apply Mori LG-S No.1 grease all around both left

and right clutch spring parts of the PF shaft.

Caution 1. Mori LG-S No.] grease should be applied

to both roller assembly and PF latch
mounting parts.
For the PF roller ass’y, grease should be
applied starting about 5 mm from the right

end of the clutch spring, to a width of about

15mm. For the PF latch. grease should be
applied starting about 5 mm from the left
end of the clutch spring. to a widthof about
5 mm.

(10) Install the PF latch from the receipt side and the

PF roller ass’y from the journal side of the PF
shaft.

Caution I. When installing the PF shaft ass’y, adjust

the PF roller ass’y and the PF latch to the
platen width of the PF housing.

Appiy ORELUBE G-1/3

PF latch

.,

w

*

Apply Mori LG-S

PF clutch spring

PF roller ass’y ‘

(11) Combine the clutch springs with the PF roller

ass’y and the PF latch.

Caution 1. The projections on both ends of the clutch

springs should be inserted in the slots of
the PF roller ass’y and the PF latch.

slot

PF latch

PF clutch
spring

ProjectIon

slot

PF roller

PF shaft ass’y

4

@9P

c-

a

Apply ORELUBE

~
~

(13) Install the fixing levers (L) and (R) and also the PF

gear on the PF shaft ass‘y,and fix these parts with
the E ring (E4).

(14) Attach the fixing lever springs to the fixing levers

(L) and (R).

(15) Install the paper guide springs on the pressure

roller shaft ass’y, then install the pressure roller
shaft ass’y in the PF housing.

Caution 1. The pressure rollers of the pressure roller

shaft ass’y are installed on the pressure

——

T$

Ering

roller shaft.

/1

o

Fixinglever(L)

Fixinglever(R) j

+

~ ‘+. Q

G-1/3

PF housing

d

[k

PFgear
c

(12) Insert the PF shaft ass’y into the PF housing, then

apply ORELUBE G- 1/3to the mounting part of
the left and ri~ht fixing levers (L) and (R).

13

Fix

Sp

PFshaftass’y \\\\W/

Paperguidespring

-..----”4

(16) Apply ORELUBE G-1/3 to the end of the PF

armature, then install the PF solenoid ass’y in the
PF housing, and fix it with the two mounting
screws (M3x8).

(18)Install the four paper sidd guide plates at the

bottom of the paper guide (U).

~fvtountngscrews

ApplyO

G-

PFh

/

(17) Install the pull paper guide on the pressure roller

shaft ass’y.

Caution 1. Wheninstallingthe pull paper guide, place

one end of the paper guide spring in the
notchattop right of the pullpaperguide,and
the otherend in the slit of the shaftass’y.

(19) Apply EPNOC AP-1 to the inside of the spool

aem. then install the spool spring.

a

Caution 1. When installing the spool spring, ensure

that the hookpart is at the front, then screw

it in counterclockwise.

(20) Apply EPNOC AP-I to the outside of the spool

spring, then install the winder pulley.

(21) Apply EPNOC AP-1 to the pivot of the spool

holder ass’y, then install the spool gear on which
the winder pulle~ has been installed.

,

(

I

(Apply EPNOC Ap.1,)

Apply EPNOCAP-1.

I

t

I \ ‘w”’’’” / /

\

\

Spool holderass’y

‘/ /

Spool spring

14

Winder pulley

/

(22) Apply ORELUBE G-1/3 to the two pivots, then

install the carriage drive gear and the carriage
drive pulley.

Carriage

Carriage drive gear

\

Q

6

drive pulley

(25) Apply ORELUBE G-1/3 to the stamp lever plate

mounting boss (one) of the paper guide (L) ass’y,
and also the slits (three) that touch this plate.

Caution 1. The paper guide (L) ass’y consists of the

pressure roller, paper pressure sheet, l-line
validation PCB ass’y and validation guide
plate installed on the paper guide (L).

(26) Apply ORELUBE G-1/3 to the two parts of the

stamp cam that touch the stamp lever plate, then
install the stamp lever plate on the paper guide (L)
ass’y.

Paperguide (L)

ass’y

(23) Align the phases of the notch in the assembled

carriage drive pulley and the notch in the other
carnage drive pulley, then install the timing belt
ass’y.

(24) Install the pivot supportplate, then fix the carriage

drive pulley.

Caution 1. Install the pivot support plate with the

protruding side uppermost.

...,,,

Carriage drive
‘“”e’ ~ i’<+-- ‘iv”’ ’upwnp’a’e

<:

\

(ApplyGRELUBE

G-1/3.)

(27) Install thepaper guide (L) ass’y on the main frame

ass y, then fix it with the mounting screws
(H3x6).

,Mounting screw

L)

Stare
plate

———

u

pulley

15

(28) Install the motor ass’y and motor spacer on the

right face of the main frame ass’y, then fix the

motor ass’y with the mounting screws (M3x5).

Caution 1. Install themotor ass’y with the leads at the

bottom.

/;

II

G

Motor assiy

e

/’ (, 4

e *~_ Motor spacer

(30)

Install the motor gear on th~ motor ass’y shaft.

(31)

Move the carriage drive pin of the timing belt
ass-y toward the left side face, install bevel gear 1,
then pass the bevel gear 1pivot through bevel gear

1.and fix the gear with the E ring (E2).

Caution 1. When installing bevel gear 1, align the

match mark on bevel gear 1 with the match
mark on the carriage chive gear.

+

Carriage
drivepin

~ -a.

>

-r

,

w

screws

(29J .App]~C)RELUBEG-1:3 to the six pivots and the

two holes on the right face ofthe main frame ass’y

of the motor ass’y.

I

I

Carriage
drive gear

Main frame ass’y

T

w

w“

,,

o

Motorgear ~ 1

FP

Bevel gear ;

Bevel gear 1
pivot

G“

J

E ring-

.UBE

Holes

(AppIyORELUBEG-1/3.)

i
I

16

(32) Install idle gear 1, idle gear 2 and the winder

pulley ass’y.

Caution 1. Thewinder’pulley ass’y consists of the

winder pulley to which idle gear 2 is
attached.

2. Hold the dropoff prevention hook out of
the way while Installing idle gear 2 and the
winder pulley ass’y.

(34) Install reduction gear 2

Caution 1. When installing reduction gear 2,align the

match mark on reduction gear 2 with the

match mark on reduction gear 1.

(33) Install the stamp drive gear and reduction gear 1.

Caution 1. When installing the stamp drive and

reduction gear 1, align the match mark on
reduction gear 1 with the match mark on
the motor gear.

f

Reductiongear 1

(35) Mesh reduction gear 4 with the bevel gear 2 ass’y,

then install them both together.

Caution 1. The bevel gear 2 ass’y consists of bevel

@,::::tion]

gear 2 installed on reduction gear 3.

2. When installing the bevel gear 2 ass’y,
align it with the match marks on both

reduction gear 2 and bevel gear 1.

Match marks

Motor gear ~

m

o

Bevel gear 1

Reductiongear 1

0

Reductiongear 2

Match maks

,m

..’.

o 2

..:.’

,.,..,

0

.—.

.7,,,,,,;:;:,.,,.,...:.

,.,.,,,,,,...

Bevel gear 2

ass’y

Bevel gear 1

17

(36)

ApplyORELUBE G-1/3 to tie worm wheel pivot,
then install the worm wheel.

(37)

Apply ORELUBE G-1/3 to the worm wheel pivot
mounting hole of the frame (R) support plate
ass’y, then install the worm wheel pivot in which
the worm wheel is installed.

Caution 1. The frame (R) support plate ass’y consists

of the ribbon drive gear and ribbon drive
shaft installed on the frame (R) support
plate.

(38) Install the rear cushion on the frame (R) support

plate ass’y.

Caution 1. Install the rear cushion from the side

opposite the slit.

k

, Rearcushion

(A

.

o

Worm wheel

E

(39) Install the winder timing belt on the winder pulley

ass’y.

(W) Install the frame (R) support plate ass’y on the

main frame ass ‘y, and fix it with the mounting
screws (M3x8). Next, fit the bushing of reduction
gear 1,and rotate it until it locks into position.

Frame (R) ‘

supportplate ass’y

(41) Install the stamp cam on the stamp drive gear.
(42) Apply EPNOC AP-1 to the inside of the clutch

Reductiongear 1

cushion

screws

Spring,thenscrew’theclutch springclockwise into

the stamp dtive gear.

(43) Apply EPNOC AP-1 to the outside of the clutch

spring, then install the stamp latch, and fix it with

the E ring (E4).

(44) Install the rear cushion on the main frame ass.y.

Caution 1. Install the rear cushion from the side

opposite the slit.

‘“n’% , “amp’atch

Stamp cam

(Apply EPNOCAP-1.)

Clutchspring

&

d

%

w’

Stamp drive gear
(Apply EPNOCAP-1 )

d

(45) Remove the bottom support plate from the left

side of the main frame ass”y. (mounting screws
(M3x5)) ‘

(46) Apply ORELUBE G-1/3 to the moving part of the

carriage of the main frame ass’y and also to the

carriage drive pin of the timing belt ass’y.

Mountingscrews

A

Main frame ass~y -.

Bottomboardplate

/

Carnage\shiftsection

(A~iy ORELUBE G-1/3.)

(49) Apply ORELUBE G-1/3 to the two mounting

holes of the PF housing ass’y of the main frame
ass’y, then install the PF housing ass’y, and fix it
with the mounting screws (H3x6).

Caution 1. The PF housing ass’y consists of the parts

assembled in steps (1) to (18).

2. When installing the PF housing ass’y,
insert each of the left and right bosses of
the PF housing ass’y into one of the
mounting holes.

Mountingscrew

r \P / ~ -~

Boss(Thereisa
bossintheopposite
sideaswell.)

h

h

\

I

I

I
,

,

(47) Install

carriage on the main frame ass’y by means of the
carriage shaft inserted from the left side.

Caution 1. Impregnate the felt with Mobil 1.

(48) Using the mounting screws (M3X5), install the

bottom support plate that was removed.

Mounting screws

A

Main frame ass’y‘ /

the felt on the carriage, then install the

Bottom supportplate \

Carriage

Carriage shaft

-w

v

-\*

‘:..:...

Felt

Ivlounllng noses

(ApplyORELUBEG-1/3.)

(50) Install the main PCB ass’y from the main frame

ass’ y, then fix it with the mounting screws
(M3x5).

Caution 1.

(51) Install the insulating sheet and the transistor onthe

Caution 1. When installing the transistor, align the

19

When installing the main PCB ass.y, route
the lead wires of the motor ass ”yfrom the
square hole in the PCB to the bottom of the
main frame ass’y.

2.

Move the ceramic capacitor and transistor
inthe vicinity of the dot pulse sensor on the

PCB so that they do not touch the timing
disk on the motor ass.y.

main PCB ass‘y. then fix them with the mounting
screw (M3x6).

lead wires of the transistor with the lead
holes in the PCB, then bend them 90°.

w

Main frame assly

I

Mounting screw

/

Dotpulse sensor

It

a

@.

Mounting screw

\

Square hole

k

w

Stamp solen~idass’y

(53) Solder the following lead wires to the main PCB

ass.y.
* Transistor lead wires (three)
* Lead wires (two)from the stamp solenoid ass’y
* Lead wires (three) from the PF housing ass’y
* Lead wires (two) from the motor ass’y
* Lead wires (three) from the 1-line ~~alidation

PCB ass’y

screw

(52) Insta]] the stamp solenoid ass’~’from the bottom

of the main frame ass ‘y. then fix it with the
mounting screws (M3x5).

Caution 1.

Install the stamp armature, residual and

stamp armature spring on the stamp

solenoid ass’y in ad~’ance.

2.

When installing the stamp solenoid ass’y,
pass the lead wires of the stamp solenoid
ass’y from the bottom of the main frame
ass’)’to the rear.

PT3/8 inch paper 9: White
masking tape 8: Gray

O:Black

\

\

1

LJ’~

2: Red
(motor)

(54) Slacken the screws of the main frame ass-y, then

position the boss of the winder ass’y. and flx the
winder ass’y with the mounting screws (M3x5).
Next, re-tighten the slackened screws, then install
the winder timing belt.

Caution 1. The winder ass’y consists of the parts

assembled in steps (19) to (21).

20

M: Black

(motor)

6; Blue

7

1:Brown

(57) Install the ground spring to the PF housing ass’y.

Caution 1. Install the ground spring between the right

side of the PF housing ass’y and the right
side plate of the main frame ass’y.

2. The bent sections of the ground spring
should be inserted in the positioning slots
of the PF housing ass’y.

3. The slightly angled long end of the ground
spring must contact the PF shaft.

Sla~ken

Main frame assty

Mounting screws

(55) Insert the head cable protruding from the main

PCB ass’y, into the head ass’y.

(56) Install theheadass’yon thecarriage.

Caution 1. Wheninstalling theheadass’y,insertthe

cable fixing sheet into the slit in the
carriage, then install the head ass’y with
the head cable between it and the fixing
sheet. After installing the head ass’y, push
in the head cable and fix it in place.

Headcable

r

:::fiF2:indspring 1

Angled long end

PF housing ass’y ~?e~

Cablefixing
sheet ,.:.,.

\

Head ass’y

—

21

(58) Mount the manual cutter ground spring onto the

projection to the left of the platen.

Caution 1. Make sure that themanual cutter ground

Spr-ingfaces the direction indicated below.

PI

~<’

.@

m cover

2-station housing

- = Manual

Manual cutter

, ground spring

:

cutter

\

1

(59) Install the manual cutter on the 2-station housing

cover, then fasten the cover to the PF housing
ass’y with the mounting screws (M3x8).

Caution 1. Install the 2-stationhousing cover in such a

way that the bent section of the manual
cutter ground spring contacts the manual
cutter in the correct position.

(60) Install the ribbon plate on the main frame ass’y,

and fix it with the mounting screws (M3x5).

Caution 1. ~Then installing the ribbon plate, ensure

that the mounting holes fit over the
projections on the ass’y, then slide the
plate to the right.

Mountingholes

22

Main frame ass’y

‘w

J

(61) Install the ribbon plate spring mid way between

the ribbon plate and the front of the main frame
ass’y.

.

(62) Install the head cover on the main frame ass’y,

then fix it with the mounting screws (M3x5).

Caution 1. Leave the PF housing ass’y open when

installing the head cover.

Mounting screw

<

3-4

Adjustment Procedure

The adjustment of this printer is divided into the
following six adjustment items. Carry out
adjustment in the sequence of these items.

(1)

Printing speed

(2)

Platen/head gap adjustment

(3)

Bi-directional printing error adjustment

(4)

Reset pulse (RP)/home position pulse (HP)
waveform confirmation

(5)

Validation sensor adjustment

(6)

Paper near end sensor adjustment

3-4-1

Printing speed adjustment

(1)

Procedure

Perform bi-directional printing, and measure the
period A of the reset pulses (RP) using an
oscilloscope.

Ribbonplatespring

(63) Install the ribbon cassette.

(2)Check points

RP wave
GND

Caution 1. Perform adjustment under the following

...... Pin 26 of the comector

............ Pin 24 of the connector

conditions.
* Ribbon cassette:
* Recording paper:

Loaded
Loaded

* Motor drive voltage: +24 N y’
* Ambienttemperature:Normaltemperature
* Printing condition:

Condition printing

I

I

23

(s) AcljUStrnentmethod

Adjust the printing speed adjustment VR on the
soldered side of the main PCB ass’y so that the
period A falls within the range of the table below.

Value of A

601 ins-733 ms

I

~the VR.

Adjustment meth~d

When the value of A is outside
the range:
Perform adjustment by turning

Bi-directional printing error adjustment

3-4-3

(1)

Procedure

Performbi-directional printing, then,leaving the

timing disk fixed, rotate the shaft of the motor
until the bi-directional printing error disappears.

I

I

I

H H H H-------------H—

Printingspeed
adjustmentVR

Y

~11

Main PCBass’y

3-4-2 Platen/head gap adjustment

(1) Procedure

1. Remove the 2-station housing cover.

2. Slacken the two mounting screws of the PF
housing platen ass’y.

(2) Adjustment method

LISin~athicknessgauge, measure the gap between
the head ass’y and the platen ass’y, then perform

adjustment using the adjustment screws (two
M3x1Ohex screws) at the rear.

Validationsensor
adjustmentVR

H H H H--------------H—

(2)Adjustment method

Fix the timing disk with a flat plate (theflat end of
a pair of tweezers, for example), then grasp the
shaft of the motor with radio pliers and turn it as
described in the table below, in the direction
corresponding to the printing condition.

Printing condition

H H H--------H –

H H H--------H—

H H H-------H —

H H H--------H –

Adjustment method

Turn the shaft clockwise sc

as to reduce the error tc

within one dot.

Tum the shaft counterc]ock

I

wise so

rror to within one dot.

as to reduce the e

Gap

0.45 mm-.o.~ mm

Caution 1. Adjust the gap by turning the adjustment

screws to the right end, left end. or the

center position.

2. Re-tighten the slackened screws.

Adjustment method

If the gap is outside the specified
range:
Adjust the gap by turning the
adjustment screws (two) at the
rear.

24

RP/HP waveform confirmation

3-4-4

(1)

Procedure .

Perform bi-directional printing, and measure the
period A of the reset pulses (RP) and the home
position pulses (HP) using an oscilloscope.

RP . m

““~til

Dpllll111111I

(2)

(3)

I1111111II1111111:

Check points

RP wave ...... Pin 26 of the connector

HP wave ...... Pin 6 of the connector

............ Pin 24 of the connector

GND

Checking method

Check to see ifthe value of A lies is not more than
3 ms. If it is outside this range, align the match
mark on the carriage drive gear with the match
mark onbevel gear 1once again.

m

II

ik

+

\

II111111I/

h’alidation sensor adjustment

3-4-5

Procedure

(1)

Measure the validation sensor output voltage both
with and without paper in the printer.

Check points

(2)

Sensor output voltage: Pin 30 of the connector
GND:

Caution 1. In the case of receipt side validation sensor

specifications, check between pins 27 and
24 of the connector.

(3) Adjustment method

1. Measure the output voltage without validation
paper loaded, then perform adjustment using
the validation adjustment VR on the soldered
side of the main PCB ass’y (regarding the VR
position, refer to the printing speed adjustment
diagram ).
Before carrying out measurement, wait for
about 20 seconds after switching on the printer
and confirm that the voltage has stabilized.

Outputvoltage

whennopaperloaded

If the output voltage is outside

0.885 V-O.915 V

specified range:
Adjust the output voltage by
turning the VR.

Pin 24 of the connector

Adjustment method

2. Load validation paper, and measure the output

voltage. If the voltage is outside the range
shown below, repeat the adjustment of the
output voltage when paper is not loaded.

Outputvoltage

when~a~erloaded

I

0.55 V max

Paper near end sensor adjustment

3-4-6

Adjustment method

(1)

Adjust the switchholder in such a way that the end
switch goes ON when the remaining length of
recording paper is between 3 and 4 m.

Adjustment method

If the output voltage is outside
specified range:

Repeat the adjustment of the
output voltage when paper is not
loaded.

25

3-5 Replacing the Head Assembly

3-5-1 Removal procedure

(1) Remove the printer from the POS/ECR system.
(~) Remove the ribbon cassette.

(3) Push down the left and right fixing levers (L) and

(R) to open the PF housing ass’y.

P

b.

(4) Remove the two mounting screws (M3x5) from

the head cover.

(5) Insert a coin in the gap between the bent

projection on the right side of the head cover and
the main frame ass ‘y and turn it counter­clockwise to remove the head cover.

(6) Move the ribbon according to the following

procedure.

Remove one mounting screw (M3x5) of the
ribbon plate.
Lift the ribbon plate at is rear and shift it to the
left.
Lift the ribbon plate at its front and release it
from the projection of the main frame ass’y.
Lift the ribbon plate, turn it counter-clockwise
using the ribbon drive shaft as a pivot. The

head cable is now visible.

Caution

1. As the ribbon plate spring holds the ribbon
plate under tension be careful not to
damage it by overly turning.

26

3-5-2 Assembly procedure

(1) Connect the head cable with the head ass’y

connector.

Caution 1. Insert the head cable as far as possible into

the connector.

(2)

Install the head ass. y by aligning it with the
carriage guide, and before fully contacting insert

the bent section of the head cable into the slit of
the carriage.

Caution 1. Take care during the assembly not to

damage the head cable.

(3) Push it further in until the head ass’y snaps into

place.

(4) Make sure to align the direction of the cable fixing

sheet correctly, then insert it into the slit of the
cauiage.

\

/

1

(7) Lift up the cable fixing sheet at its left side and

remove it.

Caution 1. Since the cable fixing sheet is thin and

small, take care that it is not dropped into
the printer or lost.

(8)

Pinch the projection of the head assembly

together, then lift it up.
After removing the head ass’y from the carriage,

(9)

pull off and remvove the head cable.

Head ass’y

\ [ Zns 1

Head cable

Cable fixing sheet ..,:.

Head cable

\

Slit

Head ass’y

.

Carriage

Head cable *

\

Slit

\

Carriage

27

(5) For reassembling theribbonp]ate, reverse the

disassembly procedure.

Caution 1. Itisimportant thatthe part fastened bythe

mounting screw of the ribbon plate be
installed on the inside of the main frame

ass’y.

Projection

\

Main frame ; . .
ass’y

I

e

,.

a

Ribbon plate

4.

(6) Install the head cover.

caution’ 1. Due to the springforce of the head cover, it

may possibly not link with the left and

projections of the main frame ass’y.

right
In such a case, press on the front sideof the
head cover until it links with both the left
and right projections.

(7) Secure the head cover with the 2 mounting

screws.

Caution 1. First the mounting screw at the right side

should be fastened, then the mounting

screw on the left side.

(8) Close the PF housing ass’y.
(9) Install the ribbon cassette.
(10) Install the printer in the POS/ECR system.

Section4 Troubleshooting

4-1 Repair Procedure

If a breakdownoccurs, carefully check the breakdown symptoms,locate the breakdownpoint accortiingto 4.2 “Repair Guide”,
* Symptom: Lookfor the breakdown symptom from amongthose listed in thiscolumn. If there are several symptoms,take all of them into consideration.

this youcan locate hidden defects.

4

* Condition:

* Cause : This column lists many conceivable causes. Pick out thelikely causes of the breakdownfrom among these, then determine the actual cause using the

* Checkingmethod: This columnlists checking methods for determining the cause of a breakdown.
* Repair method: Repair the breakdown point according to the method indicated inthis column.
By carryingout repair usingthe above procedure, you canperform efficient troubleshootingwith fewmis-judgments.

Repair Guide

4-2

Head feed
defect

.
Symptom Condition

Carriage does Themotordoes Defective motor

not rotate. not move.

The prerequisite conditions for determining the cause of a defect are listed here. Use this column together with the “Symptom” column in order to
determine the concrete breakdowncondition.

“Checkingmethod” column.

Cause Checkingmethod

Applythe rated voltage to the solderedparts ofthe motor
leads on the main PCB ass’y (+: Red, -: Black), and
confirm that the motorrotates.

Abnormal voltage applied
to the motor.

Defective main PCB ass’y

Paperjamming

Printhead wire stuckto ink Checkto see if the wire of the head remains stuck to the
ribbon or paper.

Malfunctionresulting from
lodgmentof foreignmatter
inthe gear trainor abroken
gear

Measure thevoltagebetween pin 10(+) andpin 2 (-) on
thePCB ass’y,andverify that 24 VDC is being supplied. the print control

Checkthe continuitybetweenthe red motor leadand pin

10 of the connector on the main PCB ass’y, and also

betweentheblackmotor lead and pin 2 of thisconnector.
Open the PF housing and check to see if there is any

jammed paper or foreignmatter inside.

ink ribbonor paper.

Rotate the motorpinionby hand, and check to see if the
gear train turns.

then carry out the specified repair.

Repair method

Ifthe motordocs not rotate, replace it.

Ifvoltage is notbeing supplied, repair

section.

If there is no continuity, replace the
main PCB ass’y,

If there is any paper or foreignmatter,
remove it.

Replace the print head ass’y and the
ribbon cartri(ige.

If it does not turn, remove any lodged
matter, or replace the gear if it is
broken.

By doing

,

Symptom

Carriage doe!
not move.

Condition

Motor d(~csnot

rotate.

Cause

]~hasc error bctwccn the
timing belt ass’y and the

pulley

Checking method

Rcn~ovcfh~carriage,thencheck to scc if there is any

phase error in the engagement of the carriage drive pin
with the notch in each pulley.

Repair method

If thereis anengagc[ncnterror.re-

install the tin}ingbc]t ass’y.

Head feed

defect

Printing
Jefect

The carriage
does not stop.

Printing (locs
not take place
(all dots/some
dots).

The motor is
normal,

The carriage
(~peratcs
normally.

Carriage slidingpart
abnormality

I)P, HP or RP signal
abnormality

Control section
abnormality

Head FFC disconncctcti.

Defective print head ass’y

Ribboncassette is not
loadedcorrectly.

I)P, HP or RP signal
abnormality

Check to sce if the carriage rails (front and rear) are

coated withoil.
Measurethe voltage betweenpin 29 (+)and pin 24 (-) on

the main PCB ass’y, and verify that 5
supplied.

Observe the waveforms at pins
(RP) on the main PCB ass’y, and verify that normal
signalsare obtained.

Check the hardwarecircuit of the printercontrol section
andalsothe connectingcable between the printer control
sectionand the printer itself.

Check the inserted state of the FFC connector.

Check to see if operation returns to normal when you

replacetheprinthead ass’ywith a new one. If the printer
contr{~lsection isabnormal, thehead may be burnt out,
so be very careful,

Check to see if the ribboncartridge is loadedcorrectly,

Measurethe vo]tagcbetween pin 29(+) andpin 24 (-)on
the main PCB ass’y, and verify that 5 VDC is being
supplied.

6(HP), 8 (DP) and 26

VI)~ isbeing

If they are not, oil them,

If 5 VDC is not beingsupplied. repair

the printer control section.

If normal signals are is not obtained,
repair the printercontrc~lsection.

If there is an abnormality, repair the
printer control section or replace the
connecting cable.

If the FFC connector is(Disconnected,
rc-insert it.

If the print head ass’y operates
nornlally, replace it with a new one.

If the cartridge is k~adcd incorrectly,

rc-ltlad it.
If 5 VDC is not being supplied, repair

the printer control section.

Observe the waveforms at pins 6 (HP), 8 (DP) and 26
(RP)of the connector on the main PCB ass’y,and check
to see if normal signals are obtained.

If normal signals are not obtainei,
replace the main PCB ass’y,

Symptom

Printing does

not take place ope-rates
(all dotslsome

dots).

4

The print is
light.

Printing

defect Malfunctiondue to foreign Rotatethe motor pinionclockwise byhand,and check to

Condition

Thecarriage

normally.

The ribbon is Incorrectly loaded ribbon Check to seeif the ribboncassette is loaded correctly.
not beingfed.

Control section abnor­reality andalso the connectingcable betweenthe printer control

Foreign matter in print
section foreign matter in the print section.

cassette
Defective ribboncassette Rotate the take-up knob of the ribbon cassette in the

matter in the ribbon drive see if the gear train turns.
mcch,anismoradamagedgear

Cause Checkingmethod

Check the hardwarecircuit of theprinter control section If there is an abnormality, repair the

sectionand the printer itself.

Remove theprint head ass’y,and check to see if there is

direction of the arrow, and check the turning action of
the knob and the take-up condition of the ribbon.

Repairmethod

printer control section or replace the
connectingcable,

If‘thereis foreign matter, remove it.

If it is not loadedcorrectly, re-load it.

If there is an abnomlality, replace the
ribbon cassette.

If it does not turn,remove any foreign
matter, or replace the gear if it is
broken.

.

‘aperfeed
Iefect

The ribbon is
fed normally. printhead andplaten

Bi-direct ional The error is 0.3 Timing disk position error Check to see if the bi-directional print error disappears
print error

The paper Front edge of paper crea­cannot be
inserted.

mm or more.

Incorrectclearancebetween

Control section is abnor- Check the voltage appliedto the print solenoid from the If there is an abnormality, repair the

reality. printercontrol section, and also the period during which

sed or incorrectly cut.

Defect caused by use of
non-standardpaper

Defect due to paper scraps
or foreign matter

Check the clearance between the print head and the If the clearance is incorrect, re-adjust
platen.

the solenoidis energized.

whenyou rotate the timingdisk while keeping the motor
shaft fixed.

Checkto see if the frontedge ofthepaper is creasedor is
cut cleanly.

Check to see if the thickness or width of the paper, and If the dimensions of the paper do not
also the diameter of the paper roll, conform to the
specifications.

Open the paper feed unit, and check to see if there is
jammed paper or foreign matter lodged inside.

it.

printer control section.

If the error disappears, perform print
error adjustment.

If the front edge of the paper is
unsatisfactory, cut it to the correct
shape, then re-insert it.

conformto the specifications, replace
the paper.

If there are paper scraps or foreign
matter, remove them.

Symptom

Thepaperis

not fed at all,
or is fed only
sometimes.

Paper feed operates.
defect

Condition

ThePF

armature docs
not operate.

The PF
armature

Cause

open circuit PF solenoid Measure the resistance of the PF solenoid, and check to

see if it conformsto the standard(approx. 34 Q). range,replace the PF solenoid.

Control scc[ion abnor­reality

Jamming of paper outside Check the external paper feed path as far as the paper If there is jammed paper, repair the
printer insertion part to see if there is anyjammed paper. paper feed path.

Check thehardwarecircuit c}fthe printer control section
andalso the connectingcable betweenthe printercontrol
section and the printer itself.

Check to sce if the paper is loaded incorrectly in the If the paper is loaded incorrectly, re­external paperfeed part. load it.

Checkingmethod

If the resistance is outside the standard

If there is an abn[~rmality,repair the
printer control section or replace the
connectingcable.

Repair method

<ibbonfeed
~efect

,

)ption
Iefect

The paper feed mechanism
is abnormal. to the ingressof foreign matter or a broken gear. Iockcd, remove the forci.gnmatter or

Thepaperfeed
pitchisincorrect. lengthisexcessive. reality abnormal.

The ribbon is Ribboncassetteloadingdefect
not fed.

Stamp printing The stamp
docs not take
place.

‘Ilepaperfeed

armature does solenoid
not operate.

Clutch mechanism abnor-

Ribboncassette defect

Malfunctionduetolodgrnentof
foreignmatterintheribbondrive see if the gear train turns.

mechanismoradamagedgear broken.
Open circuit stamp

Stamp solenoid drive
voltage or energizing pulse
width abnormality on the main PCB ass’y,and check to see if 24 VDC is

Check to see if the paper feed mechanism is lockeddue

Check to see if the force for feeding the paper is being If there is insufficient force, replace
appiicd to thePF~s]ipmcchanism.

Check to see if the PF latch is worn or otherwise If the PF latch is worn or otherwise

Check to see if the ribboncassette is loadedcorrectly.
Rotate the take-up knob of the ribbon cassette in the

direction of the arrow, and check the turning action of ribbon casscttc.

the knoband the take-upconditionof the ribbon.
Rotate the motor pinionclockwiseby hand, and check to

Measurethe resistanceof the stamp solenoid, andcheck If it is outside the standard range,
to see if it conforms to the standard (approx. 34 f2).

When stamp printing is taking place, measure the
voltagebetweenpin 7 (+) andpin 16(-) of the connector

being suppliedin pulses thathave apulse widthof 30 DP
(the total widthof 30 DPpulses).

If the paper feed mechanism is

replace the gear.

the PF s]ip mechanism.

abnormal, replace it,
If it is not, re-load it.
If there is an abnormality, replace the

If it does not turn, remove any lodged
matter, or remove the gear if it is

replace the stamp solenoid.
If these pulse are not being supplied,

repair the printer control section,

,.

Option

defect

nptom

s

The stampprint
is light.

The recording
paper is not

taken up.

The near end
cietectordoes
not operate
normally.

The paper is
not cut,

Condition

The print is

light, and some
or all of the
letters are
blurred.

Thejournalpaper
isfedcorrectlybut
is nottakenupor
istakenUpslack,

The near end
detector does
not operate
when the paper
approaches the
end of the roll.

The cutter does
not operate.

The cutter
operates.

Cause

Insufficientstamp ink

Deformedstamp holder

Stamp set incorrectly.

Defective slip mechanism

Abnormal take-up timing
belt

End switch lever position
adjustment defect

Microswitchdefect

Defective end switch lever
spring

Open circuit cutter
solenoid

Cutter solenoid drive
voltageor energizing pulse
timing abnormality

Wear of rack, latch and
pinion

Wear of cutter blade

Checkingmethod

Press the stamp by hand, and check to see if it prints

clearly.

Check

to see if the stamp holder is deformed.

Check to see if the stamp is set correctly in the stamp

holder.

Check the spool gear and clutch spring for abnormal
wear,

Check the take-up timing belt to see if it is worn or

stretched.

Check to see if the end switch lever is installed in the
correct position.

atester, check to see if the rnicroswitch ON/OFF

Using
operationis normal,

Check [o see if the end switch lever is out of place.

Check to see if the end switch lever is deformed.

Measure the resistance of the cutter solenoid, and check
to see if it conformsto the standard (approx. 34Q),

When the cutter is operating, measure the voltage
between pin 7 (+) and pin 18(-) of the connectoron the
main PCB ass’y,andcheck to see if the 24 VDC is being
suppliedat the specifiedtiming.

Check to see if the rack, latch or pinion is worn.

Check to seeif the cutter blade is worn.

Repair method

If the stamp print is unclear, either
add two or three drops of ink, or
replace the stamp with a newone,

If the stamp holder is deformed,
replace it.

If the stamp is not set correctly, set it

correctly,
If there is wear or some other abnor-

mality,replace the abnormalpart,
if there is an abnormality, replace the

take-up timing belt.
If the position is incorrect, re-adjust

it.
Ifthe ON/OFF operation is abnormal,

replace it,
If the switch lever is out of place, re-

install it,
If the end switch lever is deformed,

replace it.
If it is outside the standard range,

replace the cutter solenoid.
If it is not being supplied, repair the

printer control section.

If there are any worn parts, replace
them,

Ifthe blade is worn, replace thecutter.

Option
defect

Symptom

I

I The validation I

card cannot be signal is not

Idetected,

I

I“he validation
card does not
go in smoothly.

I

ThC validation

detected when

the validation
card is inserted
and withdrawn,

I

I

I

Condition

!

Defectivevalidationscnsi~rI lnscr[ a validation card into the validation sensor, and

I

I

I

I

I)eforfnedvalidation guide
plate

Deformed paper pressure

sheet

I

Cause Checkingmethod

checktosee ifthesignalbetweenpin30(+)and pin 24(-) the validation sensor. If the error

I

of the main PCB ass’ychanges.
(In the case of receipt side validation sensor
specifications, check between pins 27 and 24 of the

connector.)
Check to see if the validation guide plate isdeformed.

Check to see if the paper pressure sheet is deformled.

I

1

I Ifthe signal does not change, replace

remains despite replacingthe sensor,

I

repair the printer control section.

I

Ifthevalidationguideplateis defornled,
replaceit.

Ifthepaperpressuresheet isdeforrncd,
replaceit.

I

Repair method

Sect ion 5 Timing Chart

(1) Print,paper feed

Motordrivesignal

(

1

900

I

Hom positionsignal

@t

pulsesignal

r

Print area

‘We’ptp’‘“’””0’” 1~~~.. -- -- --

1

Journal PF solenoid

(2) Rap

Reset stgnal

I

1

~-- -- -- -- -- -- -- --—

n-n

1

23

1

Receiptprint

496“s26

I

d feed timing of roll paper

—

r

I

Note 1. The values

numbers.

2. The signal
by the user.

3. Use 9001)P for motor conduction OFF.

in the timing chart shows the DP

in [????????] must be provided

I

I

1096” 1126

--—- -

-. -. --

--— .

1

Rece,Ptp~ SO,enOldI

I

Journal PF solenoid

I

~-. -- -- -- -- -- ‘-

u L------- --

I

30DP

~-- -- -- -- -- -- -- --

Nute 1.

‘1’hcvalues in the tiIn ing chtirt shows;

numbers.

2.

Use 9001)}>

3.

For continuous popcr feed of

sIIpply ttie power cent iIIuously. k’or

issue,
the paper feed, use the [\bovc tiII}ing for

conrfuct.ion.

!

Over 600DP

-- -- .

for motor conduction

OFh’,

the receipt

.-

--— --

-.—

k

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I

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DP730

Mechanism etc.

~

DP730

—l—

DP730

❑ Mechanism etc.

NO.

83

84 0 C Z N E 22001 -0/
85 0 C Z N E2 3601 – 1/

93 0 CZNE43 10 2–0/

94 0 C Z N E3 900 i -0/

I

PARTS CODE

OCZNE 24202- 1/’

PRICE NEW PART

RANK MARK RANK

AS
AP
AE

AG NIB F

AG NIC

AG NiC

N

N c

N

.

I

c
c

Guide,

Paper,Pull

Shaft,

Roller,Pressure

Spring R, Roller, Pressure

ver L,

iA,Solenoid,PF

Residual,sole0 C Z N E 241 1 7–0/

Spring, earth,manual cut

Screw, plate ribbon

Pressure

Fixer

P,PF

noid

DP730

DESCRIPTION

’40

18

’20

~SHARP

COPYRIGHT @ 1995BY SHARP CORPORATION

All rights reserved.

Printed in Japan.

No part of this publication may be reproduced,

stored in a retrieval system, or transmitted,

in anyform or by any means,

electronic, mechanical, photocopying, recording, or otherwise,

without prior written permission

of the publisher.

SHARP CORPORATION

Information Systems Group

Quality & Reliability Control Center

Yamatokoriyama, Nara 639-11, Japan

1995

OCI. Printed in Japan @