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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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CT-S310II Series Service Manual
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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CT-S310II Series Service Manual
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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CT-S310II Series Service Manual
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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CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
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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”.
<Precaution at reassembly>
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
CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
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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”.
<Precaution at reassembly>
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
CT-S310II Series Service Manual
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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
<Precaution at disassembly / reassembly>
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”.
<Precaution at reassembly>
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
CT-S310II Series Service Manual
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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.
<Precaution at reassembly>
Insert lugs at “FRAME, MIDDLE-03” into slots at “FRAME BOTTOM” as shown below.
J11
FRAME, MIDDLE-03
Power cable
CT-S310II Series Service Manual
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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”.
<Precaution at reassembly>
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”.
SCREW, BHT (ST), M3.0 6
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
CT-S310II Series Service Manual
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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)”.
<Precaution at disassembly / reassembly>
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
CT-S310II Series Service Manual
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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.
<Precaution at reassembly>
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”.
<Precaution at reassembly>
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.
CT-S310II Series Service Manual
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Remove “SLIDE, HEAD SPRING-03” and “CABLE, HEAD FFC” from “SA, THERMAL HEAD-03”.
<Precaution at reassembly>
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”.
<Precaution at reassembly>
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.
SCREW, BHT (ST), M3.0 6
Hole for boss
CT-S310II Series Service Manual
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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
SCREW, BHT (ST), M3.0 6
CT-S310II Series Service Manual
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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.
<Precaution at reassembly>
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”.
<Precaution at disassembly / reassembly>
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
SCREW, BHT (ST), M3.0 6
COVER, GEAR-03
CT-S310II Series Service Manual
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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”.
<Precaution at reassembly>
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
SCREW, PHT (ST), M3.0 6
UNIT, MOTOR
SPRING, LEVER PLATEN LOCK
LEVER R, PLATEN LOCK LEVER L, PLATEN LOCK
SCREW, PHT (ST), M3.0 6
CT-S310II Series Service Manual
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Remove one “SCREW, BHT (ST), M3.0 6” that fastens “LEVER R, PLATEN LOCK” and “LEVER,
COVER OPEN-03”.
<Precaution at reassembly>
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.
<Precaution at disassembly / reassembly>
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.
<Precaution at disassembly / reassembly>
When reassembling, check the orientation.
LEVER, COVER OPEN
Hole for boss
SCREW, BHT (ST), M3.0 6
Holes
Slot
Shaft
LEVER R, PLATEN LOCK
PLATE, PLATEN LOCK LEVER
CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
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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
SCREW, BHT (ST), M3.0 6
(1)
(2)
(2)
(1)
Right side
Before removal
Left side
Before removal
CT-S310II Series Service Manual
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Remove “SA, PE SENSOR” from “BASE, HEAD SUPPORT-03”.
<Precaution at disassembly /
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”.
<Precaution at reassembly>
Be careful not to tighten the
screw excessively.
Check the sensor mounting
position and its orientation.
Check the cable routing
position.
<Precaution at disassembly /
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.
CT-S310II Series Service Manual
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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”.
<Precaution at reassembly>
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
CT-S310II Series Service Manual
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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”
CT-S310II Series Service Manual
- 24 -
(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.
CT-S310II Series Service Manual
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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CT-S310II Series Service Manual
(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.
POWER LED (green) ERROR LED (red)
Lit
Blinks (long flash pattern)
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.
The buzzer beeps. *1
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.
POWER LED (green) ERROR LED (red)
Lit
Blinks (long flash pattern)
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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CT-S310II Series Service Manual
(2) Cutter lock error
Description: The cutter cannot be moved. An error has occurred.
The buzzer beeps. *1
Recovery condition: Recovered when the FEED switch is pressed or the DLE ENQ 1 or 2
command is given.
POWER LED (green) ERROR LED (red)
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.
POWER LED (green) ERROR LED (red)
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.
Recovery condition: This error is not recoverable.
POWER LED (green) ERROR LED (red)
Lit
Blinks three times at short
intervals, and blinks once at long intervals, repeatedly.
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CT-S310II Series Service Manual
(3) High voltage error
Description: The voltage supplied to the printer is abnormally high.
When this error occurs, immediately turn the power off.
Recovery condition: This error is not recoverable.
POWER LED (green) ERROR LED (red)
Lit
Blinks four times at short
intervals, and blinks once at long intervals, repeatedly.
(4) System error
Description: A disconnection of the head cable inside the printer is detected.
Or another system error is detected.
When this error occurs, immediately turn the power off.
Recovery condition: This error is not recoverable.
POWER LED (green) ERROR LED (red)
Lit
Blinks five times at short
intervals, and blinks once at long intervals, repeatedly.
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.
The buzzer beeps. *1
Recovery condition: Recovered when a new roll paper is set.
POWER LED (green) ERROR LED (red)
Lit Lit
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CT-S310II Series Service Manual
(2) Cover open
Description: When the printer cover is opened in the standby status, the ERROR LED
blinks.
The buzzer beeps. *1
Recovery condition: Recovered when the printer cover is closed.
POWER LED (green) ERROR LED (red)
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.
POWER LED (green) ERROR LED (red)
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.
POWER LED (green) ERROR LED (red)
Decreases the brightness and modulates it slowly.
Decreases the brightness and keeps the indication in the state before standby.
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CT-S310II Series Service Manual
(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.
POWER LED (green) ERROR LED (red)
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.
POWER LED (green) ERROR LED (red)
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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CT-S310II Series Service Manual
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.
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CT-S310II Series Service Manual
● Printing Failure
Phenomenon Cause Check Method Remedies
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 thermal head is faulty. Replace the thermal head with a new one.
The supply voltage is low. Check the supply voltage with a tester.
Use the printer within the specified supply voltage range.
The thermal head is faulty. Replace the thermal head with a new one.
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
Phenomenon Cause Check Method Remedies
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.
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CT-S310II Series Service Manual
● Faulty Sensor
Phenomenon Cause Check Method Remedies
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.
Check the connecting condition of the connector.
Connect the connector 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
Phenomenon Cause Check Method Remedies
The connector has a bad connection.
Check the connecting condition of the connector.
Connect the connector correctly.
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
Phenomenon Cause Check Method Remedies
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”.
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CT-S310II Series Service Manual
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
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CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
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No. Part No. Part Name Q'ty Remarks
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
CT-S310II Series Service Manual
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No. Part No. Part Name Q'ty Remarks
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
CT-S310II Series Service Manual
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
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CT-S310II Series Service Manual
- 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
CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
- 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
CT-S310II Series Service Manual
3-2. Part s Layout 3-2-1. SA, MAIN PCB 30
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CT-S310II Series Service Manual
4. CIRCUIT DIAGRAMS 4-1. MAIN PCB 4-1-1. Main Control Board (CPU1)
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CT-S310II Series Service Manual
4-1-2. Main Control Board (CPU2/DAC)
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CT-S310II Series Service Manual
4-1-3. Main Control Board (ROM)
(16M)
(64M)
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CT-S310II Series Service Manual
4-1-4. Main Control Board (RAM)
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CT-S310II Series Service Manual
4-1-5. Main Control Board (HEAD, OP-PANEL)
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CT-S310II Series Service Manual
4-1-6. Main Control Board (PF MOTOR, CUTTER, DRAWER)
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CT-S310II Series Service Manual
4-1-7. Main Control Board (SENSOR, BUZZER)
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CT-S310II Series Service Manual
4-1-8. Main Control Board (POWER)
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CT-S310II Series Service Manual
4-1-9. Main Control Board (RS232C I/F, USB I/F)
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CT-S310II Series Service Manual
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.
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CT-S310II Series Service Manual
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)
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CT-S310II Series Service Manual
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.
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CT-S310II Series Service Manual
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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
CT-S310II Series Service Manual
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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.
CT-S310II Series Service Manual
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.)
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CT-S310II Series Service Manual
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.
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