SHARP DP-730 Service Manual

DP”730

SHARP SERVICEMANUAL

CODE : OOZDP730 SM/-E

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

Disass*ly and Re-ass*ly

Troubleshootim

Timing Chart

Parts Lists :(Ki-~6778Rczz)

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

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

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

..-.-.-----.----..-----.--..—.

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

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

Using and Maintaining the Printer

Specifications and Principle of Operation

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

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

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

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

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

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

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

. ~~~._~-_-

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2 4 4 4

4 5 6 6 7 8 8 9 9 9

11 11

11 23 23 24 24 25 25 25 26 26 27

Section

Troubleshooting

4-1 Repair Procedure 4-2 Repair Guide

Timing Chart

Parts Lists

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

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

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

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

29 29

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)

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)

# 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

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

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.

pulley. and to the stamp mechanism via

PF gear

Idle gears 2

k \/

Winder pulley

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)

Dot pulse

(2) Reset pulse sensor

sensor (DP)

Head ass’y

Motor ass’y

Moto; gear

Reduction gear 1

Redjction

gear 2

Reduction

gear 3

Reduction

gear 4

Main PCB ass’y

Carriage

(3) Validation sensor (option)

(2) Print data and print position

Validation card

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 ,

—

Full cutene{gizedposition

(3) Head drive mechanism

Head ass’y

Carriage drive

pulley

\ \

Partialcutpapercuttingposit[on

i \

‘1

,, ; \,

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

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

Home position sensor

Dot pulse sensor

Reset pulse sensor

Timing belt assiy

Carriage drive pulley-

Carriage drive gear

/“’”/

Bevel gear 1

Bevel gear 2

(4) Print drive mechanism

2-3-5 Ribbon cassette mechankm

(1) Ribbon feed mechanism

Wire spring

Print wire

Nose ass’y

Armature

Solenoid ass’y

2-3-4 Paper feed mechanism

(1) Paper feed mechanism

.—

Armature stopper

Armature spring

Ribbon cassette

Worm wheel

Ribbon drive shaft

Ribbon drive gear

Reduction gear I

Pressure rollers

Idle gear 2

PF gear

PF armatures

PF latches

PF solenoid ass’ys

——

)

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

2-3-7 Stamp mechanism

Stamp cover

Stamp case

Stamp cam /

Stamp drivegear

Stamp

Stamp latch

2-3-8 Auto cutter mechanism (option)

Cutterguide plate

PFgear

Cutter”shafi

/ t

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)

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

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

}

;rmiflal

Terminai name

Printsolenoid#3

Motor (-)

Print solenoid#7

Motor ON/OFF signal

5 Print solenoid COM.

Function

VMCOM.

6 Homepositionsensoroutput

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

GND

Print solenoid#6

Reset pulse sensor output

) oP~on

Validationsensoroutput(J

+5V

) Option

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)

2SD

1637

—

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)

150Q

1 kQ

C945

- The photointet?upteris GP1S23 or RPI-243.

Unused

Unused (RP)

Validation detector (J side)

(Option)

)

2 kQ

+ 30 hidden pages