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Service Manual

COMPACT LINE THERMAL PRINTER CT-S310II

Revision 1.00 2011.4.25

CT-S310II Series Service Manual

REVISIONS Rev No. Date Page Comment

1.00 2011/4/25 Newly issued

CITIZEN is a registered trademark of CITIZEN HOLDINGS CO., LTD., Japan.

CITIZEN es una marca registrada de Citizen Holdings Co., Japón.

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CONTENTS INTRODUCTION .............................................................................................4

1. DISASSEMBLY AND REASSEMBLY.......................................................4

1-1. Tools Used .........................................................................................................................4

1-2. Disassembly Procedure .....................................................................................................5

1-2-1. Disassembling the Printer....................................................................................5

1-2-2. Disassembling “UNIT, MECHANISM” ................................................................15

1-3. Assembly Procedure........................................................................................................22

1-4. Oiling................................................................................................................................23

2. TROUBLESHOOTING ...........................................................................25

2-1. Error Details and LED Indications ....................................................................................25

2-2. Troubleshooting Procedure..............................................................................................31

2-3. Troubleshooting Guide.....................................................................................................31

3. SERVICE PARTS LIST ..........................................................................34

3-1. Mechanical Parts List.......................................................................................................34

3-1-1. Mechanical Exploded Diagrams ........................................................................39

3-2. Parts Layout.....................................................................................................................43

3-2-1. SA, MAIN PCB 30..............................................................................................43

4. CIRCUIT DIAGRAMS.............................................................................44

4-1. MAIN PCB .......................................................................................................................44

4-1-1. Main Control Board (CPU1)...............................................................................44

4-1-2. Main Control Board (CPU2/DAC) ......................................................................45

4-1-3. Main Control Board (ROM) ................................................................................46

4-1-4. Main Control Board (RAM) ................................................................................47

4-1-5. Main Control Board (HEAD, OP-PANEL)...........................................................48

4-1-6. Main Control Board (PF MOTOR, CUTTER, DRAWER) ...................................49

4-1-7. Main Control Board (SENSOR, BUZZER) .........................................................50

4-1-8. Main Control Board (POWER)...........................................................................51

4-1-9. Main Control Board (RS232C I/F, USB I/F)........................................................52

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5. SUPPLEMENTARY INFORMATION ......................................................53

5-1. Self-printing......................................................................................................................53

5-2. Hex-dump Mode ..............................................................................................................55

5-3. Memory Switch Setting Mode ..........................................................................................56

5-4. Updating the Firmware.....................................................................................................58

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INTRODUCTION This manual describes the disassembly, reassembly, and maintenance procedures of CT-S310II

Series.

1. DISASSEMBL Y AND REASSEMBLY Note the following items when performing maintenance of the printer.

Do not disassemble, reassemble, or adjust the printer unnecessarily when the printer operation is

satisfactory.

Do not loosen the screws that fasten the components unless it is absolutely necessary.

After finishing inspection, perform a check to ensure that there is no irregularity before turning on the

printer.

Use caution not to leave any part or screw used for maintenance inside the printer.

When handling the print head and electronic components, care must be taken to avoid static electricity.

When disassembling or reassembling the printer, check the wires and cords for damage. Do not draw

any wire or cord by force.

Lubricate the components as necessary when reassembling them.

1-1. T ools Used Phillips screwdriver #0, #1, and #2

Tweezers (metallic not allowed)

Long-nose pliers

Brush

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1-2. Disassembly Procedure 1-2-1. Disassembling the Printer

1. Disassembling “COVER, FRONT-03”

Put your fingers into the indentation on the front and raise “COVER, FRONT-03” to remove it.

<Precaution at disassembly / reassembly>

When mounting or removing “COVER, FRONT-03”, be

careful not to touch the manual cutter.

If it cannot be removed easily, open “COVER, TOP-03”

beforehand.

2. Disassembling “COVER, TOP-03”

Pull “LEVER, COVER OPEN-03” to open “COVER, TOP-03”.

“COVER, TOP-03” is inserted in slots on the right and left of “CASE-03”.

Pull the right and left panels of “COVER, TOP-03” outwardly while raising “COVER, TOP-03”.

COVER, FRONT-03

Remove the cover being careful not to touch the manual cutter blade.

LEVER, COVER OPEN-03

COVER, TOP-03


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Remove two “SCREW, BHT (PT), M3.0 10” and remove “HOLDER, PLATEN-03” from “COVER,

TOP-03”.

<Precaution at reassembly>

When reassembling “HOLDER, PLATEN-03”, align the holes on “HOLDER, PLATEN-03” with the bosses at

the right and left of “COVER, TOP-03”.

3. Disassembling “HOLDER, PLATEN-03”

Remove two “SCREW, PHT (ST, SW + PW) M3.0 6” that fasten “UNIT, SLIDE BLADE” and remove

“GUIDE 3, PAPER” from “HOLDER, PLATEN-03”.


When reassembling, align “GUIDE 3, PAPER” with bosses at “HOLDER, PLATEN”.

Keep the chamfered side of “UNIT, SLIDE BLADE” at the left so that the mark at “HOLDER, PLATEN” can be

seen.

HOLDER, PLATEN-03

SCREW, BHT (PT), M3.0 10

Bosses

HOLDER, PLATEN-03

SCREW, PHT (ST, SW + PW), M3.0 6

GUIDE 3, PAPER

Bosses


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Remove “E-RING, 4” from the right side of “SA, PLATEN-03”.

Move “BUSHING, PLATEN” on the right side of the shaft of “SA, PLATEN-03” inwardly, then move “SA,

PLATEN-03” to the right. (Together with “BUSHING, PLATEN” on the left)

Raise the gear side of “SA, PLATEN-03” and pull it out toward the left.

Pull “WASHER, PLATEN” outwardly while pulling out “GEAR, PLATEN”.

E-RING, 4

(1) (2)

WASHER, PLATEN GEAR, PLATEN


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4. Disassembling “CASE-03”

Pull the right and left panels of “CASE-03” at the bottom center outwardly.

(Be sure to disengage the lugs at the front and rear from “FRAME, BOTTOM-03”.)

When raising “CASE-03”, pull the left panel of “CASE-03” outwardly to avoid contacting “LEVER L,

CUTTER RELEASE” on the left side, and pull the right panel outwardly to avoid contacting “LEVER,

COVER OPEN-03” on the right side.

Remove “SCREW, BHT (BT) M3.0 8” that fastens “LEVER, FEED SW-03”.


Align holes on “LEVER, FEED

SW-03” with bosses on

“CASE-03”.

Remove “CASE-03” while keeping the lugs clear of “FRAME, BOTTOM-03”.

Fastening lugs

CASE-03

SCREW, BHT (BT), M3.0 8

LEVER, FEED SW-03


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5. Disassembling “FRAME, BOTTOM-03”

Remove two “SCREW, BHT (ST), M3.0 6” that fasten “FRAME, BOTTOM-03” and “FRAME, MAIN-03”.

Disconnect connectors from “SA, MAIN PCB”.

J2: HEAD

J3: MOTOR

J7: AUTO CUTTER

J8: COVER OPEN SENSOR (TOP COVER)

J9: COVER OPEN SENSOR (FRONT)

J10: PAPER SENSOR


Do not pull the cable by force.

When reassembling, be careful not to catch the

cable.

“FRAME, BOTTOM-03” and “FRAME, MAIN-03” are secured with hooks at the bottom. Slide “FRAME,

BOTTOM-03” to disengage it from “FRAME, MAIN-03”.


Check that hooks on the right and left are securely inserted.

When securing “FRAME, BOTTOM-03” with screws, align the boss at “FRAME, BOTTOM-03” with the hole at

“FRAME, MAIN-03”.

SCREW, BHT (ST), M3.0 6

J3 J9 J8 J10 J7

J2

“FRAME, BOTTOM-03” side “FRAME, MAIN-03” side

Hooks

Boss


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Disconnect the power connector (J11) from “SA, MAIN PCB”.

Push the rear of “FRAME, BOTTOM-03” outwardly and raise “FRAME, MIDDLE-03”.

Before removing “FRAME, MIDDLE-03”, remove the power cable from the notch. When mounting it,

align the hole on the front of “FRAME, MIDDLE-03” with the boss.


Insert lugs at “FRAME, MIDDLE-03” into slots at “FRAME BOTTOM” as shown below.

J11

FRAME, MIDDLE-03

Power cable


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Remove “SCREW, BHT (ST), M3.0 6” that fastens “FRAME, BOTTOM-03” and “PLATE, IF-03”.

Remove two “LOCK SCREW” from the right and left of the serial connector.

Turn “PLATE, IF-03” toward you and pull it out upwardly.

Remove three “SCREW, TP (ST), M3.0 5” that fasten “SA, MAIN PCB”.

Note that one of those screws is secured with “COVER, DR CONNECTOR-03”.


When attaching “PLATE, IF-03”, align the bosses at “FRAME,

BOTTOM-03” with the holes at “PLATE, IF-03”.

Check the positions of the serial, DK and USB connectors.

Remove two “SCREW, FHT (ST), M3.0 8” that fasten “FRAME, BOTTOM-03” and the AC inlet on

“PWB (MAIN_PCB30)”. Move the AC inlet outwardly to detach it from “FRAME, BOTTOM-03”.


BOSS

DK LOCK SCREW USB

PLATE, IF-03 COVER, DR CONNECTOR-03

SCREW, TP (ST), M3.0 5

SCREW, FHT (ST), M3.0 8

AC inlet


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Remove “SCREW, PH (SW), M4.0 6” from “FRAME, BOTTOM-03” and disconnect the frame ground

cable. Remove three “SCREW, TP (ST), M3.0 5” that fasten “FRAME, BOTTOM-03” and “PWB

(MAIN_PCB30)”.


When assembling or disassembling “PWB (MAIN_PCB30)”, be sure

to avoid contacting any part of “FRAME, BOTTOM-03” (especially

capacitors).

Be careful not to deform the power switch when inserting it into the

notch at “FRAME, BOTTOM-03”.

6. Disassembling “SA, CUTTER UNIT”

Pull “LEVER R & L, CUTTER RELEASE” toward you to raise “SA, CUTTER UNIT” and remove “SA,

CUTTER UNIT” from “FRAME, MAIN-03”. Remove the cable from the connector.

<Precaution at disassembly /

reassembly>

When disconnecting the connector,

do not pull the cable by force.

When reassembling, hang the cable

to the hook. Be careful not to catch

the cable.

SCREW, PH (SW), M4.0 6

Frame ground cable

PWB (MAIN_PCB30)

SCREW, TP (ST), M3.0 5

POWER SW

Insert the power switch into the notch at "FRAME, BOTTOM-03".

Be sure to avoid contacting the capacitors.

SA, CUTTER UNIT

Connector

Hooks

LEVER L, CUTTER RELEASE

CABLE


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7. Disassembling “SA, THERMAL HEAD-03”

Hold the right and left side of “HOLDER, HEAD SPRING” and push it toward the “HEAD” side to

disengage the hooks on the right and left, and pull it out upwardly.


Align three “SPRING, HEAD-03” with the lugs at “SLIDE, HEAD SPRING-03”.

Align “SA, HEAD” with bosses on the right and left of “FRAME, MAIN-03” as well as the U-slots at “HOLDER,

HEAD SPRING”.

Insert the hook at “FRAME MAIN” until its end reaches the mark at “HOLDER, HEAD SPRING”.

Detach “SA, THERMAL HEAD-03” from the bosses on the right and left of “FRAME, MAIN-03”.


Align the slots at “SA, THERMAL HEAD-03” with the bosses on the right and left of “FRAME, MAIN-03”.

HOLDER, HEAD SPRING Hooks

Insert "SPRING, HEAD-03" into the grooves,

respectively.

Bosses

Insert the hook until its end reaches the mark at "HOLDER, HEAD SPRING".

SA, THERMAL HEAD-03 Align the boss with the U-slot.


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Remove “SLIDE, HEAD SPRING-03” and “CABLE, HEAD FFC” from “SA, THERMAL HEAD-03”.


Check the mounting position of “SLIDE, HEAD SPRING-03”.

Connect “CABLE, HEAD FFC” with the conducting face facing upward.

Since the connector pins are sharply pointed, never touch the connector terminal.

Remove “SCREW, BH, M3.0 4” that fasten “SA, THERMAL HEAD-03” and “HOLDER, HEATSINK-03”.


Align the bosses at “HOLDER, HEATSINK-03” with the holes at “SA, THERMAL HEAD-03”.

SLIDE, HEAD SPRING-03

CABLE, HEAD FFC

Conducting face

Check the positions.

Be careful not to touch the connector terminal.


Hole for boss


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1-2-2. Disassembling “UNIT, MECHANISM”

1. Disassembling “LEVER, INTERLOCK SENSOR-03”

Detach “SPRING, LEVER INTERLOCK” from the hook at “FRAME, MAIN-03”.

Remove “SHAFT, LEVER” that secures “FRAME, MAIN-03” and “LEVER, INTERLOCK SENSOR”.

2. Disassembling “HOLDER, PAPER-03”

Contract “SPRING, POP UP-03” and remove it toward you.

Move down “POP UP, COVER”, align the lugs on the right and left with the notches at “FRAME,

MAIN-03”, and pull it out toward you.

Remove one “SCREW, BHT (BT), M3.0 6” that fastens “FRAME, MAIN-03” and “HOLDER,

PAPER-03” from the right and left sides. Remove one “SCREW, BHT (ST), M3.0 6” that fastens

“BASE, HEAD” from the right and left sides.

SHAFT, LEVER

SPRING, LEVER INTERLOCK

SPRING, POP UP-03

Align the lugs with the notches and pull out "POP UP, COVER".

POP UP, COVER

SCREW, BHT (BT), M3.0 6



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Remove two “SCREW, NO. 0, THF (BT4-0.5) M2.0 4” that fasten “HOLDER, PAPER-03” and “SA, PE

SENSOR”. Pull the right and left frames at “FRAME, MAIN-03” outwardly and pull “HOLDER,

PAPER-03” upwardly until it is removed.


Align two bosses on the right and left sides of “HOLDER, PAPER-03” with holes at “FRAME, MAIN-03”.

Each slit must be aligned as well.

3. Disassembling “SA, MOTOR-03”

Remove “SCREW, BHT (ST), M3.0 6” and “SCREW, PHT (ST), M3.0 6” that fasten “FRAME,

MAIN-03” and “COVER, GEAR-03”.


When reassembling, do not tighten the screws

excessively. Doing so may damage “COVER,

GEAR-03”. Be careful not to confuse two

different screw types.

SCREW, NO.0, THF (BT4-0.5) M2.0 4

Pull the right and left frames outwardly while pulling it upwardly.

Hole for boss

Left frame Slit

Hole for boss

Right frame

SCREW, PHT (ST), M3.0 6


COVER, GEAR-03


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Remove “GEAR, REDUCTION” from

“COVER, GEAR-03”.

Remove “SCREW, PHT (ST), M3.0 6” that

fastens “FRAME, MAIN-03” and “SA,MOTOR-03”.


When assembling “SA, MOTOR-03”, keep the terminal

section facing downward.

4. Disassembling “PLATE, PLATEN LOCK LEVER”

Remove “SPRING, LEVER PLATEN LOCK” from the hooks at “FRAME, MAIN-03” and “LEVER R,

PLATEN LOCK”.

Remove two “SCREW, PHT (ST), M3.0 6” that fasten “PLATE, PLATEN LOCK LEVER” with “LEVER

R, PLATEN LOCK” and “LEVER L, PLATEN LOCK”, respectively.

GEAR, REDUCTION

COVER, GEAR-03


UNIT, MOTOR

SPRING, LEVER PLATEN LOCK

LEVER R, PLATEN LOCK LEVER L, PLATEN LOCK



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Remove one “SCREW, BHT (ST), M3.0 6” that fastens “LEVER R, PLATEN LOCK” and “LEVER,

COVER OPEN-03”.


When reassembling, align the boss at “LEVER, COVER OPEN” with the hole at “LEVER R, PLATEN LOCK”.

Raise the rotating shaft a little while moving down “LEVER R, PLATEN LOCK” and align it with the slot

at “FRAME, MAIN-03” and remove the shaft through the shaft hole.


To keep the hook at “LEVER R, PLATEN LOCK”

clear of “FRAME, MAIN”, raise the rotating shaft

slightly when removing it.

When reassembling, align the slot position with the

shaft hole and return the lever in place.

Pull “PLATE, PLATEN LOCK LEVER” out.


When reassembling, check the orientation.

LEVER, COVER OPEN

Hole for boss


Holes

Slot

Shaft

LEVER R, PLATEN LOCK

PLATE, PLATEN LOCK LEVER


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Move down “LEVER L, PLATEN LOCK” and align it with the slot at “FRAME, MAIN-03” and remove it

through the shaft hole.

5. Disassembling “LEVER L & R, CUTTER RELEASE”

Disengage “SPRING, CUTTER LEVER” from the hooks at “FRAME, MAIN-03” and “LEVER R, CUTTER

RELEASE”. Move down “LEVER R, CUTTER RELEASE” and pull it out of the shaft.

Disengage “SPRING, CUTTER LEVER” from the hooks at “FRAME, MAIN-03” and “LEVER L, CUTTER

RELEASE”.

Move down “LEVER L, CUTTER RELEASE” and pull it out of the shaft.

Slot

Shaft LEVER L, PLATEN LOCK

LEVER R, CUTTER RELEASE Shaft

LEVER L, CUTTER RELEASE

Shaft


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6. Disassembling “BASE, HEAD SUPPORT-03”

Remove two “SCREW, BHT (ST), M3.0 6” that fasten “BASE, HEAD SUPPORT-03” and “FRAME,

MAIN-03”.

Disengage “BASE, HEAD SUPPORT-03” from the boss at “FRAME, MAIN-03” and remove it from the

shaft.((1) (2) in order)

BASE, HEAD SUPPORT-03


(1)

(2)

(2)

(1)

Right side

Before removal

Left side

Before removal


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Remove “SA, PE SENSOR” from “BASE, HEAD SUPPORT-03”.


reassembly>

When reassembling, insert “BASE,

HEAD SUPPORT-03” into “SA, PE

SENSOR” as shown below.

7. Disassembling “SA, COVER OPEN SENSOR 2”

Remove two “SCREW, BHT (BT#3), M1.7 7” that fasten “SA, COVER OPEN SENSOR 2”.

Detach the cables from the hooks at “FRAME, MAIN-03”.


Be careful not to tighten the

screw excessively.

Check the sensor mounting

position and its orientation.

Check the cable routing

position.


reassembly>

Route the cables through the

hooks at “FRAME, MAIN-03”

and pass them through the

hole at the bottom. Be sure

to hang the cables inside the

hooks.

Bosses

Pull “BASE, HEAD SUPPORT-03” toward you while pushing the bosses at “SA, PE SENSOR”.

Viewed from the side

SCREW, PHT (BT#3), M1.7 7

Check the cable routing position.


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8. Disassembling “SA, COVER OPEN SENSOR F2”

Remove one “SCREW, BHT (BT#3), M1.7 7” that fastens “SA, COVER OPEN SENSOR F2”.

Detach the cables from the hooks at “FRAME, MAIN-03”.


Be careful not to tighten the

screw excessively.

Check the sensor mounting

position and its orientation.

1-3. Assembly Procedure When reassembling the parts, follow the procedure of “1-2 Disassembly Procedure” in reverse.

SCREW, PHT (BT#3), M1.7 7


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1-4. Oiling 1) Oil Used (Grease)

FLOIL G311S (Kanto Kasei)

Daphne Eponex Grease No. 2 (Idemitsu)

2) Oiling Positions

<FLOIL G311S>

(1) Shaft at “COVER GEAR”

(2) Rotating center holes and press-formed projections at “LEVER R & L, CUTTER

RELEASE”

Rotating center holes and press-formed projections and hook at “LEVER R & L, PLATEN

LOCK”

Hook holes at “FRAME, MAIN” (mating section with “LEVER R & L, PLATEN LOCK”)

Hooks at “FRAME, MAIN” (mating section with “LEVER R & L, CUTTER RELEASE”)

Press-formed projections at “FRAME, MAIN”

Apply grease to the shaft.

Inside of the hook at “LEVER L, PLATEN LOCK”

Internal press-formed projections at “LEVER L, PLATEN LOCK”

Rotating center hole

Hooks inside “FRAME, MAIN”

Rotating shaft

External press-formed projections at “FRAME, MAIN”

Inside of the hook at “LEVER R, PLATEN LOCK”

Rotating center hole

Internal Press-formed projections at “LEVER R, CUTTER RELEASE”

Internal press-formed projections at “LEVER R, PLATEN LOCK”


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(3) Both ends of the shaft at “SA CUTTER UNIT” (projections)

<Daphne Eponex Grease No. 2>

Right/left cutting edges of the blade at “SA, CUTTER UNIT”

(Amount of grease: 1-mm drop/point)

Right and left ends of the fixed blade at “PLATE, FIXED BLADE”

(Amount of grease: 1-mm drop/point)

Apply grease to the portion that is right under the rib.

Apply grease to the portion that is right under the rib.


2. TROUBLESHOOTING 2-1. Error Details and LED Indications When an error is detected, the two LEDs indicate the error status in the following patterns.

LED on the panel 1) POWER LED (green)

Lit: Power supplied

Blinking: Memory check error, hex-dump mode, memory switch setting mode

Not lit: Power not supplied

2) ERROR LED (red)

Lit: Cover open, paper end

Blinking: Occurrence of an error, waiting for macro execution

Not lit: Normal operation

Error Details and LED Indications

1) Automatically recoverable errors

(1) Print head hot

Description: When the head temperature is raised (approx. 70C or above), printing

operation is stopped and the ERROR LED blinks to protect the print head

from overheat.

When the head temperature is lowered (approx. 65C or lower), printing

operation is automatically restarted.

Recovery condition: Automatically recovered when the temperature is lowered.

POWER LED (green) ERROR LED (red)

Lit

Blinks (long flash pattern)

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(2) Cover open error (when MSW3-8 is set to OFF)

Description: When the printer cover is opened during paper feed or printing, the ERROR

LED blinks.

The buzzer beeps. *1

Recovery condition: Recovered when the printer cover is closed.


Lit


Note: When the printer cover is opened during paper feed or printing, the paper sensor may be

activated, resulting in the paper end error.

2) Recoverable errors

(1) Cover open error (when MSW3-8 is set to ON)

Description: When the printer cover is opened during paper feed or printing, the ERROR

LED blinks.


Recovery condition: Recovered when the printer cover is closed and a command is given.

* For details about the command of DLE ENQ 1, DLE ENQ 2, or DLE DC4 (fn = 8),

see the command reference.


Lit


Note: When the printer cover is opened during paper feed or printing, the paper sensor may be

activated, resulting in the paper end error.

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(2) Cutter lock error

Description: The cutter cannot be moved. An error has occurred.


Recovery condition: Recovered when the FEED switch is pressed or the DLE ENQ 1 or 2

command is given.


Lit

Blinks twice at short

intervals, and blinks once at long intervals, repeatedly.

3) Unrecoverable errors

(1) Memory error

Description: Built-in RAM read/write check operation is not correctly performed.

Recovery condition: This error is not recoverable.


Not lit

Blinks at short intervals.

(2) Low voltage error

Description: The voltage supplied to the printer or the drawer voltage drops.

When this error occurs, immediately turn the power off.



Lit

Blinks three times at short


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(3) High voltage error

Description: The voltage supplied to the printer is abnormally high.




Lit

Blinks four times at short


(4) System error

Description: A disconnection of the head cable inside the printer is detected.

Or another system error is detected.




Lit

Blinks five times at short


4) Other status

(1) Paper end

Description: When the roll paper has run out, the paper sensor in the paper path detects

the end of paper, the ERROR and PAPER LEDs light up, and then printing

operation stops.


Recovery condition: Recovered when a new roll paper is set.


Lit Lit

- 28 -


(2) Cover open

Description: When the printer cover is opened in the standby status, the ERROR LED

blinks.


Recovery condition: Recovered when the printer cover is closed.


Lit Lit

Note: When the cover is opened with the paper set, the paper sensor may be activated, resulting in a

paper end error.

(3) Macro execution wait

Description: When the ESC/POS command is specified, the macro execution wait status

will take effect.

Recovery condition: Recovered when the FEED switch is pressed.


Lit

Blinks at long intervals,

repeatedly.

(4) Power saving mode

Description:

Recovery condition: Recovered when data is received, the sensor is activated, or the FEED

switch is pressed.


Decreases the brightness and modulates it slowly.

Decreases the brightness and keeps the indication in the state before standby.

- 29 -


(5) USB-linked power off status

Description: When the host device connected via USB is turned off, the brightness of the

POWER LED decreases.

Recovery condition: Recovered when the host device is turned on, or the power switch is turned

off or on.


Lit (dark) Not lit

(6) Data receive

Description: The POWER LED blinks when data exists in the receive buffer. The

presence of data is checked at certain intervals. Accordingly, when the

data size is small and is processed rapidly, the LED may not blink even if

the data has been received.

Recovery condition: Recovered when the data in the receive buffer is processed and cleared.


Not lit

Blinks at long intervals, repeatedly.

*1 The buzzer will beep in the following cases:

When MSW5-1 (buzzer setting) is set to ON

When the cover open or paper end error occurs (depending the MSW10-6 (buzzer event)

setting)

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2-2. T roubleshooting Procedure When a fault occurs, confirm its phenomenon, locate the problem in accordance with “2.2 Troubleshooting

Guide”, and troubleshoot it as described below.

Phenomenon Find the fault phenomenon in this column. If there are multiple phenomena, take all the applicable items into consideration. This will help you locate hidden problems as well.

Cause Possible causes are listed here. Find probable causes from the list and follow the check method to identify the cause of the fault.

Check Method The check method for identifying the cause of the fault is described.

Remedies Take the remedies described in this column.

By following the above-mentioned procedure, you can troubleshoot problems efficiently with fewer

misjudgments.

2-3. T roubleshooting Guide ● Power Supply Failure, Malfunction

Phenomenon Cause Check Method Remedies

The power cable is not connected, or not inserted securely.

Connect the power cable. Insert the cable securely.

Power cannot be turned on. (The POWER LED not illuminated.) 24 VDC is not output due to

power PCB failure. Check the output between PIN1 or 2 (24 VDC) and PIN3 or 4 (GND) at the J11 terminal.

Replace the power PCB with a new one. If the power PCB has no problem, check “SA, MAIN PCB”.

Continuous detection of low voltage error

The USB cable is not inserted correctly or the fuse is blown.

Check if the USB cable is inserted into the drawer connector. Check if the fuse has blown out.

Turn the power off and disconnect the USB cable. Replace the fuse with a new one.

The brightness of the POWER LED remains low.

The printer is set in the USB power saving mode (USB power off status).

The USB cable is disconnected. The power of the host device is off. The printer power is turned off and on within a short-time interval.

Connect the USB cable. Turn on the power to the host device. Wait two or three minutes after turning the printer power off.

- 31 -


● Printing Failure


The control PCB is faulty.

Replace “SA, MAIN PCB”.

The thermal head connector has a bad contact or connection.

Check the contact or connecting condition.

Re-insert the thermal head connector or replace it with a new one.

The thermal head is faulty. Replace the thermal head with a new one.

No printing

The paper type or orientation is not correct.

Check that the thermal paper is set in the correct orientation.

Change the paper or correct the orientation.

The thermal head connector has a bad contact or connection or faulty mounting.

Check the contact, connecting or mounting condition.

Re-insert the thermal head connector or “SA, THERMAL HEAD”.

Part of printing is not done.


The supply voltage is low. Check the supply voltage with a tester.

Use the printer within the specified supply voltage range.


The thermal head has fouling. Check the thermal head for fouling.

Remove fouling using ethyl alcohol soaked cotton swab or soft cloth.

Paper other than recommended is used.

Check if the paper being used meets the specification.

Replace it with the specified paper.

Print is pale. Print is uneven. Print is faint.

The platen roller has dirt or scratches.

Check the condition of the surface on the platen roller.

Clean or replace the platen roller.

● Paper Feed Failure


The motor connector has a bad connection.

Check the connecting condition of the connector.

Connect the connector correctly.

The motor is faulty. Measure the supply voltage with a tester or oscilloscope.

Replace “SA, MOTOR”.

The supply voltage is low. Check the supply voltage with a tester.

Use the printer within the specified supply voltage range.

The control PCB is faulty. Replace “SA, MAIN PCB”.

The platen roller is faulty. Check the platen roller status.

Replace the platen roller.

Paper feed is faulty. Check if paper is jammed, torn or caught in the paper path.

Remove unnecessary paper and set the paper correctly.

Paper is not fed.

Paper feed is not straight.

Foreign substances are stuck in the gear. A gear is broken.

Remove the gear holder and check the gear for any foreign substance or breakage.

Eliminate foreign substance. If any gear is broken, replace it with a new one.

- 32 -


● Faulty Sensor


The paper sensor is faulty. Check the indication at the LED or buzzer when the paper ends.

Replace “SA, PE SENSOR”. Paper presence or absence cannot be detected. Paper near end cannot be detected.

The sensor spring is broken. Push the sensor by hand and check if it returns.

Replace “SPRING, PE SENSOR”.

The sensor connector is not connected correctly.



The sensor is faulty. Check the indication at the LED or buzzer while opening and closing the cover.

Replace each sensor.

The cover or front cover open state is not detected or remains in the detected state.

The sensor lever spring is broken.

Check the indication at the LED or buzzer while opening and closing the front cover.

Replace “SPRING, LEVER INTERLOCK”.

● Auto Cutter Failure


The connector has a bad connection.



The auto cutter is faulty. Measure the supply voltage with a tester or oscilloscope.

If the supply voltage is normal, replace the auto cutter with a new one.

Paper feed is faulty.

(paper jams)

Check if paper is jammed, torn or caught in the paper path.

Remove unnecessary paper and set the paper correctly.

The auto cutter does not operate.

The movable or fixed blade is damaged.

Manually turn the cutter gear and check that it can be turned lightly by hand.

Replace the auto cutter.

● Operation Panel Display Failure, FEED Switch Failure


The control PCB is damaged.

The LED is broken.

Replace “SA, MAIN PCB”. The operation panel LED does not illuminate.

The FEED switch cannot be operated. “LEVER, FEED SW” is

broken. Check if “LEVER, FEED SW” is broken.

Replace “LEVER, FEED SW”.

- 33 -


3. SERVICE PARTS LIST Remarks: All the parts used in the product are contained in “SERVICE PARTS LIST” in this Service Manual. However,

note that all of them are not available with customers.

When placing an order for service parts, refer to the Parts Price List published separately. If you need the

Parts Price List, consult the local distributor from whom you purchased this product.

3-1. Mechanical Parts List No. Part No. Part Name Q'ty Remarks

1 TZ44143-0 FRAME, MAIN-03 1

2 TZ25802-0 SA, MOTOR-03 1

3 E00130-060F SCREW, PHT, M3 6 2

4 TZ20202-0 GEAR, REDUCTION 1

5 TZ24232-0 COVER, GEAR-03 1

6 E14030-060F SCREW, BHT (ST), M3.0 6 1

7 TZ44106-0 LEVER L, PLATEN LOCK 1

8 TZ44107-0 LEVER R, PLATEN LOCK 1

9 TZ44108-0 PLATE, PLATEN LOCK LEVER 1

10 E11130-060F SCREW, PHT (ST), M3.0 6 4

11 TZ23630-0 SPRING, LEVER PLATEN LOCK-03 1

12 TZ69903-0 TUBE, ID6.68/OD7.58/L9 1

13 TZ56239-0 LEVER, COVER OPEN-03 1

14 E14030-060F SCREW, BHT(ST), M3.0×6 1

15 TZ44110-0 LEVER L, CUTTER RELEASE 1

16 TZ44111-0 LEVER R, CUTTER RELEASE 1

17 TZ23604-0 SPRING, LEVER CUTTER 2

18 TZ69903-0 TUBE, ID6.68/OD7.58/L9 2

19 TZ44205-0 COVER, CUTTER LEVER 2

20 TZ44145-0 BASE, HEAD SUPPORT-03 1

21 E14030-060F SCREW, BHT (ST), M3.0 6 2

22 TZ68716-0 SA, COVER OPEN SENSOR-F2 1

23 E13517-070F SCREW, No. 0, PHT (BT #3), M1.7 7 1

24 TZ68715-0 SA, COVER OPEN SENSOR 2 1

- 34 -


- 35 -

No. Part No. Part Name Q'ty Remarks

25 E13517-070F SCREW, No. 0, PHT (BT #3), M1.7 7 2

26 TZ44229-0 LEVER, INTERLOCK SENSOR-03 1

27 PH22001-0 SHAFT, LEVER 1

28 TZ23631-0 SPRING, LEVER INTERLOCK-03 1

TZ56234-0 COVER, TOP-03 (1) White 29

TZ56235-0 COVER, TOP BK-03 (1) Black

30 TZ99903-0 LABEL, PAPER CAUTION 1

31 TZ44144-0 HOLDER, PLATEN-03 1

32 TZ28503-0 SA, PLATEN-03 1

33 TZ20201-0 GEAR, PLATEN 1

34 TZ21401-0 BUSHING, PLATEN 2

35 TZ44116-0 WASHER, PLATEN 1

36 E60340-000F E-RING, 4 2

37 TZ99101-0 PLATE, FIXED BLADE 1

38 TZ24101-0 GUIDE 3, PAPER 1

39 E16930-060F SCREW, PHT (ST, SW + PW), M3.0 6 2

40 TZ44230-0 GUIDE PAPER COURSE-03 1

41 E14030-060F SCREW, BHT (ST), M3.0 6 2

42 E17930-080F SCREW, BHT (BT), M3.0 8 2

43 TZ44805-0 SA, PE-03 1

44 TZ24233-0 BASE, PE SENSOR-03 1 Not supplied

45 TZ24234-0 LEVER, PE SENSOR-03 1 Not supplied

46 TZ23629-0 SPRING, PE SENSOR-03 1 Not supplied

47 TZ68703-0 SA, PE SENSOR 1 Not supplied

48 E16220-040F SCREW, NO.0, TFH (BT4-0.5) M2.0 4 2 Not supplied

49 TZ44226-0 HOLDER, PAPER-03 1

50 TZ44204-0 POP-UP_COVER 1

51 TZ23632-0 SPRING, POP-UP-03 1

52 E16220-040F SCREW, NO.0, TFH (BT4-0.5) M2.0 4 2

53 E17930-080F SCREW, BHT (BT), M3.0 8 2

54 TZ99701-0 SA, CUTTER UNIT 1


- 36 -


55 TZ67710-0 SA, CUTTER CABLE 1

56 TZ09806-0 SA, HEAD-03 1

57 TZ67901-0 CABLE, HEAD FFC 1

58 TZ04203-0 SLIDE, HEAD SPRING-03 1

59 TZ44105-0 HOLDER, HEAD SPRING 1

60 TZ43101-0 LEAF, CUTTER FRAME 1

61 TZ23628-0 SPRING, HEAD-03 3

TZ56232-0 CASE-03 (1) White 62

TZ56233-0 CASE, BK-03 (1) Black

63 TZ56238-0 PANEL, OPERATION-03 1

64 TZ54117-0 SHEET, OPE-PANE FEED-03 1

65 TZ44225-0 LEVER, FEED SW-03 1

66 E17930-080F SCREW, BHT (BT), M3.0 8 1

67 TZ54103-0 LOGO, CITIZEN 2

TZ56236-0 COVER, FRONT-03 (1) White 68

TZ56237-0 COVER, FRONT BK-03 (1) Black

69 TZ99902-0 LABEL, CAUTION 1

70 TZ44141-0 FRAME, BOTTOM-03 1

71 TZ54118-0 RUBBER, FOOT-03 4

72 TZ99901-0 LABEL, FCC ICES VCCI-A 1

73 E14030-060F SCREW, BHT (ST), M3.0 6 2

74 TZ66735-0 SA, MAIN PCB30 (ENG) 1

75 TZ66737-0 SA, MAIN PCB30 (CHN) 1

76 TZ54120-0 RUBBER FOOT PCB-03 1

77 TZ44150-0 COVER DR CONNECTOR-03 1

78 E11630-050F SCREW, TP (ST), M3 5 3

79 TZ54116-0 PLATE_IF-03 1

80 NJ90905-0 LABEL, DK 1

81 C6390-071# LOCK SCREW (INCH) 2

82 E14030-060F SCREW, BHT (ST), M3.0 6 1

83 TZ44142-0 FRAME, MIDDLE-03 1

84 TZ44228-0 COVER, LEVER SW-03 1


- 37 -


85 TZ66811-0 UNIT, POWER SUPPLY 1

86 E11630-050F SCREW, TP (ST), M3 5 3

87 TZ44149-0 SHEET L, INSULATION-03 1

88 E16730-080F SCREW, FHT (ST) M3 8 2

89 E00840-050F SCREW, PHT (EXT.TW), M4.0 5 1

90 E16330-060F SCREW, PHT (ST#3 TW), M3.0 6 1

91 TZ59901-0 LWS-1S (CABLE, CLAMP) 1

TZ56240-0 COVER, POWER SWITCH-03 (1) White 92

TZ56241-0 COVER, POWER SWITCH BK-03 (1) Black

93 TZ44227-0 PARTITION, PAPER-03 1

94 TZ54118-0 RUBBER, FOOT-03 4

95 TZ54119-0 PLATE, WALL HANGING-03 1

96 E14030-060F SCREW, BHT (ST), M3.0 6 2


List of Screws Used

Part No. Part Name No.

E00130-060F SCREW, PHT, M3.0 6 3

E00840-050F SCREW, PHT (EXT.TW), M4.0 5 89

E11130-060F SCREW, PHT (ST), M3.0 6 10

E11630-050F SCREW, TP (ST), M3 5 78, 86

E13517-070F SCREW, NO.0, PHT (BT#3), M1.7 7 23, 25

E14030-060F SCREW, BHT (ST), M3.0 6 6, 14, 21, 41, 73, 82, 96

E16220-040F SCREW, NO.0, TFH (BT4-0.5) M2.0 4 48, 52

E16330-060F SCREW, PHT (ST#3 TW), M3.0 6 90

E16730-080F SCREW, FHT (ST) M3 8 88

E16930-060F SCREW, PHT (ST, SW + PW), M3.0 6 39

E17930-080F SCREW, BHT (BT), M3.0 8 42, 53, 66

C6390-071# LOCK SCREW (INCH) 81

- 38 -


- 39 -

3-1-1. Mechanical Exploded Diagrams Exploded diagram 1

35 33

34 36

31 38

37 39

32

40

41

36

34

42

42

30

29

67

68

67

62

63 64

65

66

54

73

92

13

14

55

94

94

94


- 40 -

Exploded diagram 2

93

69

52

4960

56 58

61

59

50

51

53

57

43

25

53 25

48 47

45

46

44

24


- 41 -

Exploded diagram 3

20

9 10 7

15 19

1

17

184

56

3

27

28

26

2322

2

3

21

19

8

17

18

16

10

11

12

21


- 42 -

Exploded diagram 4

84

83

78

86

88

89

74, 75

85

87

79

82

81

90

70

71

95

71

91

72

71

76

71

96

96

77

80


3-2. Part s Layout 3-2-1. SA, MAIN PCB 30

- 43 -


4. CIRCUIT DIAGRAMS 4-1. MAIN PCB 4-1-1. Main Control Board (CPU1)

- 44 -


4-1-2. Main Control Board (CPU2/DAC)

- 45 -


4-1-3. Main Control Board (ROM)

(16M)

(64M)

- 46 -


4-1-4. Main Control Board (RAM)

- 47 -


4-1-5. Main Control Board (HEAD, OP-PANEL)

- 48 -


4-1-6. Main Control Board (PF MOTOR, CUTTER, DRAWER)

- 49 -


4-1-7. Main Control Board (SENSOR, BUZZER)

- 50 -


4-1-8. Main Control Board (POWER)

- 51 -


4-1-9. Main Control Board (RS232C I/F, USB I/F)

- 52 -


5. SUPPLEMENT ARY INFORMATION 5-1. Self-printing

1) Function

This function is used to check the printer setting status by printing.

2) Starting self-printing

Turn the power on while holding down the FEED switch in the print possible status to print the

printer setting status on the roll paper. The printer prints out the following information and

cuts the paper.

(1) Printer type

(2) Firmware version

(3) Interface setting

(4) Buffer size

(5) DIP switch setting (only for the model equipped with serial interface)

(6) Memory switch setting

(7) Font A (20H to FFH)

(8) Font B (20H to FFH)

(9) Font C (20H to FFH)

(10) Kanji font A, 192 characters (only for the Kanji specification)

(11) Kanji font C, 192 characters (only for the Kanji specification)

(12) Line feeds are inserted until the cutting position is reached and the paper is cut.

3) Ending self-printing

When the preset print patterns have been printed, the printer will be reset and initialized.

- 53 -


4) Supplementary function

Press the FEED switch once during self-printing to print the current memory switch settings

following the self-printing.

Press the FEED switch twice during self-printing to print the values on the maintenance

counter following the self-printing. (The number of lines feeds, number of head power-on

times, number of cutting times, and the power-on time)

- 54 -


5-2. Hex-dump Mode This function is used to check whether the printer receives the data correctly when a problem, such

as a lack or duplication in the printed data, occurs. With this function, the received data can be

printed out in hexadecimal codes.

1) Starting the hex-dump mode

Check that the paper is set correctly and the cover is opened.

Turn the power on while holding down the FEED switch.

Close the cover.

After “HEX DUMP PRINT MODE” is printed on the roll paper, received data is printed out

in hexadecimal codes and their corresponding characters.

2) Ending the hex-dump mode

Press the FEED switch three times consecutively. “Completed” is printed out and paper

is fed to the paper cut position. Then the printer is reset.

Reset the printer by turning the power off or by the I/F signal.

Example of printing

HEX ダンプ印字モード

41 42 43 44 45 46 47 48 49 4A 4B 4C ABCDEFGHIJKL

42 43 44 45 46 47 48 49 4A 4B 4C 4D BCDEFGHIJKLM

43 44 45 46 47 48 49 4A 4B 4C 4D 4E CDEFGHIJKLMN

44 45 46 47 48 49 4A 4B 4C 4D 4E 4F DEFGHIJKLMNO

45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 EFGHIJKLMNOP

46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 FGHIJKLMNOPQ

47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 GHIJKLMNOPQR

48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 HIJKLMNOPQRS

Completed

HEX DUMP PRINT MODE

41 42 43 44 45 46 47 48 49 4A 4B 4C ABCDEFGHIJKL

42 43 44 45 46 47 48 49 4A 4B 4C 4D BCDEFGHIJKLM

43 44 45 46 47 48 49 4A 4B 4C 4D 4E CDEFGHIJKLMN

44 45 46 47 48 49 4A 4B 4C 4D 4E 4F DEFGHIJKLMNO

45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 EFGHIJKLMNOP

46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 FGHIJKLMNOPQ

47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 GHIJKLMNOPQR

48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 HIJKLMNOPQRS

Completed

Note

When there is no corresponding character, “. ” is printed.

All commands are disabled in the hex-dump mode.

When the data to be printed is less than one line, printing of that line is executed by pressing

the FEED switch.

- 55 -


- 56 -

5-3. Memory Switch Setting Mode Settable Memory Switches

MSW1, MSW2, MSW3, MSW4, MSW5, MSW7, MSW9MSW7, MSW9, MSW10

The memory switch can be set by pressing the FEED switch and opening or closing the printer

cover.

For details about memory switch settings, refer to the specifications sheet or instruction

manual.

1) Starting the memory switch setting mode

(1) Set the paper and open the cover. Then turn the power on while holding down the

FEED switch.

(2) Press the FEED switch twice. Close the printer cover, and the memory switch setting

mode starts.

(3) Settings and operation guidance are printed out.

2) Selecting the memory switch

The current status of memory switch 1 is printed out.

(1) Each time the FEED switch is pressed shortly (two seconds or shorter), the switch is

selected in the order of “Memory SW 1”, “Memory SW 2”, “Memory SW 3”, …“Memory

SW 10”, “Write/Factory Setting”, “Memory SW 1”, and the status of the selected switch is

printed out.

(2) Select the memory switch for which you want to change the setting, and hold down the

FEED switch (two seconds or longer).

The setting change mode is selected and the setting of the currently selected memory

switch is printed out.

Memory SW (1) 00000000

Memory switch currently selected

Current status of the memory switch


- 57 -

3) Changing the setting of the memory switch

When the setting change mode is selected, the setting item and its current status are printed

out.

(1) Selecting the setting item to change

To skip the current setting, hold down the FEED switch (two seconds or longer) to move

to the next setting item.

4) Returning to the memory switch select mode

When the necessary setting has been made, open the printer cover and close it.

The setting of the memory switch after change is printed out.

5) Saving the setting change and ending the memory switch setting mode

Press the FEED switch for a short time repeatedly until “Write/Factory Setting” is selected.

Hold down the FEED switch.

The new setting is printed out. Then the memory switch setting mode is ended and normal

printing operation becomes possible.

* Note that the setting change will not be saved unless this operation is performed.

6) Initializing the memory switch

To initialize the memory switch setting, select “Write/Factory Setting” by following the

procedure described in 5). Open the printer cover and hold down the FEED switch.

The memory switch setting is initialized.

* All of the settings are reset to the default settings.

Power ON Info ( Valid )

Setting item Current status

The ERROR LED lights up when the value currently selected is printed.


5-4. Updating the Firmware * The following example is given assuming that the Windows printer driver has been installed on the

computer and that printing operation has been checked.

1) Store the firmware file “PC_DTxx-xxxx.ARC” in a desired folder.

2) Select the [Tool] tab on the Properties screen of the Windows printer driver.

3) Click the [Browse] button and select the location of the firmware file stored in step 1).

4) Check that the power is supplied to the printer, and set paper. The print standby status is

established.

Check that the computer and the printer are correctly connected with cables.

5) Click the [Send] button and send the updated file to the printer.

Check the status of the printer. (The value displayed at “Size” is changed with time.

When the file has been sent, the display disappears.)

- 58 -


6) After a while the POWER LED at the right side of the printer starts blinking.

Never turn the power off while the LED is blinking because the firmware update is in progress. The printer will be initialized and automatically restored.

7) After the firmware is updated, perform self-printing to check that the version is correctly

upgraded.

Check the memory switch setting recorded before updating the firmware. In a case where

the setting is initialized after the update, make the settings as required.

8) After the firmware is updated, the settings may need to be changed according to the model or

destination. In such a case, send the configuration file to the printer by following steps 2) to 5).

For details about the configuration file, contact your distributor.

- 59 -

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