TSC TTP-268M User manual

TTP-268M/ TTP-366M
SERVICE
MANUAL
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER

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TTP-268M/ TTP-366M
Bar Code Printer Service Manual
TABLE OF CONTENT
1. FUNDAMENTAL OF THE SYSTEM ..........................................................................1
1.1. Overview.................................................................................................................1
2. ELECTRONICS..........................................................................................................5
2.1 Summary of Board Connectors.............................................................................5
2.2 Pin Configuration..................................................................................................10
3. MECHANISM...........................................................................................................12
3.1 Remove Covers.....................................................................................................12
3.2 Replacing the LCD Panel Module........................................................................14
3.3 Replacing the Power Supply Unit........................................................................15
3.4 Replacing Multi-interface Board..........................................................................16
3.5 Replacing the Main Board....................................................................................17
3.6 Replacing the Platen Roller Assembly................................................................18
3.7 Replacing the Stepping Motor.............................................................................19
3.8 Replacing the Print head ASS'Y ..........................................................................20
3.9 Replacing the Gap and Black-mark Sensor Module..........................................22
3.10 Replacing the DC Motor Module........................................................................23
3.11 Peel-off Kit Installation (Option) ........................................................................24
3.12 Cutter Module Installation (Option)...................................................................31
4. TROUBLESHOOTING............................................................................................. 33
4.1 Common Problems...............................................................................................33
4.2 Print Head Pressure Adjustment Knob...............................................................37
4.3 Mechanism Fine Adjustment to Avoid Ribbon Wrinkles ...................................38
4.4 Z-axis Mechanism Adjustment Knob ..................................................................40
5. MAINTENANCE.......................................................................................................43
UPDATE HISTORY......................................................................................................45

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TTP-268M/ TTP-366M
Bar Code Printer Service Manual
1. FUNDAMENTAL OF THE SYSTEM
1.1. Overview
Front View
1. LED indicators
2. LCD display
3. Front panel buttons
4. Paper exit chute
5. Lower front cover
6. Media view window
7. Printer right side cover opener
1
2
3
4
7
5
6

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Bar Code Printer Service Manual
Interior View
1. Ribbon rewind spindle
2. Ribbon supply spindle
3. Print head pressure adjustment knob
4. Ribbon guide bar
5. Z axis mechanism adjustment knob
6. Print head release lever
7. Media guide bar
8. Label roll guard
9. Label supply spindle
10. Internal rewind spindle (Optional)
11. Damper
12. Print head
13. Ribbon sensor
14. Platen roller
15. Gap sensor
16. Black mark sensor
17. Label guide
5
9
7
10
6
11
4
3
1
2
14
13
17
15
16
12
8

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TTP-268M/ TTP-366M
Bar Code Printer Service Manual
Rear View
1. Fan-fold paper entrance chute
2. Centronics interface (SPP mode)
3. USB interface (USB 2.0/ Full speed mode)
4. RS-232C interface (Max. 115,200 bps)
5. Power jack socket
6. GPIO interface (Factory option)
*7. SD card slot (Up to 4G)
8. Internal Ethernet interface (10/100 Mbps)
9. PS/2 keyboard interface
10. Power switch
Note:
The interface picture here is for reference only. Please refer to the product
specification for the interfaces availability.
* Recommended SD card specification.
SD card spec
SD card capacity
Approved SD card manufacturer
V1.0, V1.1
128 MB
SanDisk, Transcend
V1.0, V1.1
256 MB
SanDisk, Transcend, Panasonic
V1.0, V1.1
512 MB
SanDisk, Transcend, Panasonic
1
3
5
4
2
10
6
7
8
9

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TTP-268M/ TTP-366M
Bar Code Printer Service Manual
V1.0, V1.1
1 GB
SanDisk, Transcend, Panasonic
V2.0 SDHC CLASS 4
4 GB
V2.0 SDHC CLASS 6
4 GB
SanDisk, Transcend, Panasonic
V1.0, V1.1
microSD 128 MB
Transcend, Panasonic
V1.0, V1.1
microSD 256 MB
Transcend, Panasonic
V1.0, V1.1
microSD 512 MB
Panasonic
V1.0, V1.1
microSD 1 GB
Transcend, Panasonic
V2.0 SDHC CLASS 4
microSD 4 GB
Panasonic
V2.0 SDHC CLASS 6
microSD 4 GB
Transcend
V1.0, V1.1
miniSD 128 MB
Transcend, Panasonic
V1.0, V1.1
miniSD 256 MB
Transcend, Panasonic
V1.0, V1.1
miniSD 512 MB
Transcend, Panasonic
V1.0, V1.1
miniSD 1 GB
Transcend, Panasonic
V2.0 SDHC CLASS 4
miniSD 4 GB
Transcend
V2.0 SDHC CLASS 6
miniSD 4 GB
- The DOS FAT file system is supported for the SD card.
- Folders/files stored in the SD card should be in the 8.3 filename format.
- The miniSD/microSD card adapter is required for SD card reader.

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Bar Code Printer Service Manual
2. ELECTRONICS
2.1 Summary of Board Connectors
Main board
Connector
Description
1
Centronics port connector
2
USB connector
3
RS-232C connector
4
LCD panel connector
5
Multi-interface board connector/ GPIO interface board
6
Micro processor
7
RFID module connector
1
2
3
4
5
6
7
9
13
8
11
12
14
17
18
19
10
15
16
20

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Bar Code Printer Service Manual
8
Head open sensor connector
Pin
Description
Voltage
1
Head open sensor emitter
power pin
1.2~1.4V
2
GND
0V
3
Head open sensor
receiver
0V: Head close
3.3V: Head open
4
GND
0V
9
Gap sensor connector
Pin
Description
Voltage
1
Power
5V
2
Gap sensor emitter
4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
3
Black mark sensor emitter
4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
4
Gap sensor receiver
A/D: 0~3.3V
5
GND
0V
10
Black mark sensor connector
Pin
Description
Voltage
1
Black mark sensor
receiver
A/D: 0~3.3V
2
Power
5V
3
GND
0V
4
Black mark sensor emitter
4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
11
Ribbon sensor connector
Pin
Description
Voltage
1
Ribbon sensor receiver
A/D: 0~3.3V
2
Ribbon sensor emitter
power pin
5V
3
GND
0V
4
Ribbon sensor emitter
4.0~4.1V: Emitter on
4.3~4.4V: Emitter off

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Bar Code Printer Service Manual
12
Cutter/peel-off sensor connector
Pin
Description
Voltage
1
Cutter enable
0V: Cutter work
5V: Cutter stop
2
Cutter direction
0V: Cutter positive cut
5V: Cutter negative cut
3
Cutter position sensor
switch
0V: Cutter stop
3.3V: Cutter work
4
Peel sensor receiver
A/D: 0~3.3V
5
Peel sensor emitter
4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
6
Logic power
5V
7
GND
0V
8
Cutter power
24V
13
Rewind module connector
Pin
Description
Voltage
1
Rewind motor power
24V
2
Rewind signal
3.3V
3
Rewind enable
3.3V
4
Rewind sensor receiver
A/D: 0~3.3V
5
GND
0V
14
Stepping motor connector
15
Motor connector for ribbon rewind spindle
Pin
Description
Voltage
1
Logic power
5V
2
DC motor sensor
receiver
A/D: 0~3.3V
3
GND
0V
4
Motor signal A
Motor power
5
Motor signal B
Motor power
16
Motor connector for ribbon supply spindle (Option)

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Bar Code Printer Service Manual
Pin
Description
Voltage
1
Logic power
5V
2
DC motor sensor
receiver
A/D: 0~3.3V
3
GND
0V
4
Motor signal A
Motor power
5
Motor signal B
Motor power
17
Power supply output (24V DC) connector
18
GPIO interface power (24V DC) connector
19
Print head signal connector
20
Print head power connector
Multi-interface board
Connector
Description
Remark
1
Main board connector
2
SD card slot
3
Ethernet RJ-45 connector
4
PS/2 connector
1
3
2
4

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Bar Code Printer Service Manual
GPIO with multi-interface board
Connector
Description
Remark
1
GPIO connector
2
Main board connector
3
SD card slot
4
Ethernet RJ-45 connector
5
PS/2 connector
6
GPIO power connector
2
1
4
3
5
6

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Bar Code Printer Service Manual
2.2 Pin Configuration
RS-232C
PIN
CONFIGURATION
1
+5 V
2
TXD
3
RXD
4
CTS
5
GND
6
RTS
7
N/C
8
RTS
9
N/C
USB
PIN
CONFIGURATION
1
N/C
2
D-
3
D+
4
GND
Centronics
Pin
SPP Mode
Nibble
In/Out
1
Strobe
N/A
In
2-9
Data 0-7
N/A
In
10
Ack
N/A
Out
11
Busy
N/A
Out
12
Paper Out / End
N/A
Out
13
Select
N/A
Out
14
Ground
N/A
GND
15
No Defined
N/A
N/A
16-17
Ground
N/A
GND
18
No Defined
N/A
N/A
19-30
Ground
N/A
GND
31
No Defined
N/A
N/A
32
Error / Fault
N/A
Out
33-35
Ground
N/A
GND
36
No Defined
N/A
N/A

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Bar Code Printer Service Manual
Ethernet
PIN
CONFIGURATION
1
Tx+
2
Tx-
3
Rx+
4
N/C
5
N/C
6
Rx-
7
N/C
8
N/C
PS/2
PIN
CONFIGURATION
1
KBD Clock
2
GND
3
KBD Data
4
N/C
5
+5V(VCC)
6
N/C
GPIO

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3. MECHANISM
3.1Remove Covers
1. Remove 4 screws from printer.
2. Open printer right side cover and remove 2 screws then close the cover.
3. Remove the electronics cover.
Screws
Screws
Electronics
cover

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Bar Code Printer Service Manual
4. Remove 3 screws from each hinge. Be careful the right side cover may fall out
from the printer. Take out the right side cover from the printer.
5. Reassemble the parts in the reverse procedures.
Screws
Right side cover

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Bar Code Printer Service Manual
3.2 Replacing the LCD Panel Module
1. Refer to section 3.1 to remove the electronics cover.
2. Disconnect harness from the LCD panel module.
3. Push two tabs to remove/replace the LCD panel module.
4. Remove 5 screws to replace LCD panel PCB ASS'Y and LCD panel ASS'Y.
5. Reassemble the parts in the reverse procedures.
LCD panel
module
PUSH
PUSH
Harness
LCD panel PCB assembly

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Bar Code Printer Service Manual
3.3 Replacing the Power Supply Unit
1. Refer to section 3.1 to remove the electronics cover.
2. Disconnect 2 connectors and remove 2 screws on the power supply unit.
Note:
For new power supply unit (as shown below), it need to change new DC
cable.(10PIN on PSU，8PIN on PCB)
3. Replace the power supply unit.
4. Reassemble the parts in the reverse procedures.
Screws

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Bar Code Printer Service Manual
3.4 Replacing Multi-interface Board
1. Refer to section 3.1 to remove the electronics cover.
2. Remove 4 screws then take off the interface plate.
3. Remove 2 screws from multi-interface board.
4. Replace the multi-interface board.
5. Reassemble the parts in the reverse procedures.
Screws
Interface
plate
Screws
Connector
Multi-interface
board
Copper pillar
Copper pillar

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Bar Code Printer Service Manual
3.5 Replacing the Main Board
1. Refer to section 3.1 and 3.4 to remove electronics cover and multi-interface
board.
2. Disconnect all connectors from the main board.
3. Remove 2 copper pillars and 2 screws.
4. Replace the main board.
5. Reassemble the parts in the reverse procedures.
Copper pillars
Screws

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Bar Code Printer Service Manual
3.6 Replacing the Platen Roller Assembly
1. Open printer right side cover.
2. Disengage print head lift lever.
3. Remove the 1 screw to remove gear cover.
4. Remove 4 screws from the platen holder.
5. Take out the platen holder, platen roller assembly and replace a new platen
roller assembly.
6. Reassemble the parts in the reverse procedures.
Screws
Platen roller
assembly
Holder
Screws
Screws
Gear cover