TTP-2410M/346M/644M
TTP-246M Plus/344M Plus
SERVICE
MANUAL
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER
i
TTP-2410M/346M/644M
TTP-246M Plus/344M Plus
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 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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TTP-2410M/346M/644M
TTP-246M Plus/344M Plus
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. Printer right side cover
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Bar Code Printer Service Manual
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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10
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12
3
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2
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Bar Code Printer Service Manual
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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Bar Code Printer Service Manual
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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Bar Code PrinterService 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
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15
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Bar Code PrinterService Manual
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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Bar Code PrinterService Manual
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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TTP-246M Plus/344M Plus
Bar Code PrinterService Manual
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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3
2
4
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Bar Code PrinterService 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
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TTP-246M Plus/344M Plus
Bar Code PrinterService Manual
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 DÂ3 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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Bar Code PrinterService Manual
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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TTP-246M Plus/344M Plus
Bar Code PrinterService Manual
GPIO
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TTP-246M Plus/344M Plus
Bar Code PrinterService Manual
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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