TSC TTP-346M User manual

TTP-2410M/346M/644M
TTP-246M Plus/344M Plus
SERVICE
MANUAL
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER

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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 Interface Pin Configuration..................................................................................10
3. MECHANISM...........................................................................................................13
3.1 Remove Covers and the Lower Front Panel.......................................................13
3.2 Replacing the LCD Panel Module........................................................................15
3.3 Replacing the Power Supply Unit........................................................................16
3.4 Replacing Multi-interface Board..........................................................................17
3.5 Replacing the Main Board....................................................................................18
3.6 Replacing the Platen Roller Assembly................................................................19
3.7 Replacing the Stepping Motor.............................................................................20
3.8 Replacing the Print head ASS'Y ..........................................................................21
3.9 Replacing the Gap/Black Mark Sensor Module..................................................23
3.10 Replacing the Media Damper.............................................................................24
3.11 Replacing the Ribbon Rewind Spindle..............................................................25
3.12 Cutter Module Installation (Option)...................................................................26
3.13 Peel-off Kit Installation (Option)........................................................................27
3.14 Internal Rewinding Kit Installation (Option) .....................................................31
4. TROUBLESHOOTING.............................................................................................35
4.1 Common Problems...............................................................................................35
4.2 Mechanism Fine Adjustment to Avoid Ribbon Wrinkles...................................40
5. MAINTENANCE.......................................................................................................42
UPDATE HISTORY......................................................................................................44

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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. Printer right side cover
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Interior View
1. Ribbon rewind spindle
2. Ribbon release button
3. Ribbon guide plate
4. Print head
5. Platen roller
6. Print head release lever
7. Media guide bar
8. Label roll guard
9. Label supply spindle
10. Ribbon supply spindle
11. Damper
12. Label guide
13. Z axis mechanism adjustment knob
14. Print head pressure adjustment knob
15. Print head secure screw
16. Ribbon sensor
17. Media sensor
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Rear View
1. Fan-fold paper entrance chute
2. Centronics interface
3. USB interface
4. RS-232C interface
5. Power jack socket
6. GPIO interface
7. SD card slot
8. Ethernet interface
9. PS/2 interface
10. Power switch
Note:
1. SD card slot, Ethernet interface and PS/2 interface are standard interfaces for
TTP-2410M/TTP-346M models, but optional for TTP-246M Plus/TTP-344M Plus models.
2. GPIO interface card includes SD card slot, Ethernet and PS/2 interfaces. So GPIO interface is
an factory option for TTP-2410M/TTP-346M, but a dealer option for TTP-246M Plus/TTP-344M
Plus models.
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3. 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
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 to SD card slot adapter is required.

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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
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7 RFID module connector
Head open sensor connector
8
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
Gap sensor connector
9
Pin Description Voltage
1 GND 0V
2 Gap and black mark
sensor receiver A/D: 0~3.3V
3 Black mark sensor emitter 4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
4 Gap sensor emitter 4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
5 Power 5V
Ribbon sensor connector
10
Pin Description Voltage
1 Ribbon sensor emitter 4.0~4.1V: Emitter on
4.3~4.4V: Emitter off
2 GND 0V
3 Ribbon sensor emitter
power pin 5V
4 Ribbon sensor receiver A/D: 0~3.3V
Ribbon encoder sensor connector
11
Pin Description Voltage
1 Ribbon encoder sensor
emitter power pin 4.0~4.15V
2 Ribbon encoder sensor
receiver A/D: 0~3.3V
3 GND 0V

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Cutter/peel-off sensor connector
12
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 Power supply output (24V DC) connector
14 GPIO interface power (24V DC) connector
15 Print head connector
16 Stepping motor connector

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Multi-interface board
Connector Description Remark
1 Main board connector
2 SD card slot
3 Ethernet RJ-45 connector
4 PS/2 connector
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2
4

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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
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1 4
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2.2 Interface 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 +5 V
2 D-
3 D+
4 N/C
5 GND
Centronics
Pin SPP Mode Nibble In/Out Function
1 Strobe N/A In
A low on this line indicates that there are valid data
at the host. When this pin is de-asserted, the +ve
clock edge should be used to shift the data into the
device.
2-9 Data 0-7 N/A In Data Bus. Single-directional.
10 Ack N/A Out
A low on this line indicates that there are valid data
at the Device. When this pin is de-asserted, the +ve
clock edge should be used to shift the data into the
host.
11 Busy N/A Out
When in reverse direction, a high indicates data,
while a low indicates a command cycle. In forward

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direction, it functions as PtrBusy.
12 Paper Out /
End N/A Out When low, device acknowledges reverse request.
13 Select N/A Out Extensibility flag
14 Ground N/A GND
15 No Defined N/A N/A
16-17 Ground N/A GND Ground
18 No Defined N/A N/A
19-30 Ground N/A GND Ground
31 No Defined N/A N/A
32 Error / Fault N/A Out A low set by the device indicates that the reverse
data is available
33-35 Ground N/A GND Ground
36 No Defined N/A N/A
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

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GPIO

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3. MECHANISM
3.1 Remove Covers and the Lower Front Panel
1. Remove two screws from rear of printer.
2. Open printer right side cover and remove two screws then close the cover.
3. Push the printer left side electronics cover toward the interface direction then take it out
from the printer. Please refer to the following pictures.
Screws
Screws

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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. Remove 2 screws to remove lower front panel.
6. Reassemble the parts in the reverse procedures.
Electronics cover
Screws
Screws

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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 five screws to remove/replace LCD panel PCBASS'Y and LCD panel ASS'Y.
5. Reassemble the parts in the reverse procedures.
LCD panel
module
LCD panel PCB assembly

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3.3 Replacing the Power Supply Unit
1. Refer to section 3.1 to remove the electronics cover.
2. Disconnect all connectors on the power supply unit.
3. Remove 2(TTP-2410M/346M) / 4(TTP-246M Plus/344 Plus) screws and 2 cable ties.
TTP-2410M/346M TTP-246M Plus/344M Plus
---- Connector
---- Screw
---- Cable tie
4. Remove/Replace the power supply unit.
5. Reassemble the parts in the reverse procedures.

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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.
4. Replace the multi-interface board.
5. Reassemble the parts in the reverse procedures.
Screws
Connector
Screws Interface
plate
Multi-interface
board
Copper pillar

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