TSC TTP-245 series User manual

SERVICE
MANUAL
TTP-245/343
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER

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1. FUNDAMENTAL OF THE SYSTEM ........................................................................ 1
1.1. Overview .................................................................................................................. 1
1.1.1. Front View ..................................................................................................... 1
1.1.2. Rear View ...................................................................................................... 2
1.2. Specification............................................................................................................. 2
1.2.1. Printer ............................................................................................................ 2
1.2.2. LED............................................................................................................... 4
1.2.3. Button............................................................................................................ 4
1.3. Supply Specification ................................................................................................. 7
1.3.1. Paper.............................................................................................................. 7
1.3.2. Ribbon ........................................................................................................... 7
2. ELECTRONICS........................................................................................................ 8
2.1. Circuit Description.................................................................................................... 8
2.2. MCU Circuit and MCU PIN Description..................................................................10
2.2.1. MCU PIN Description:..................................................................................11
2.3. Reset Circuit ............................................................................................................16
2.4. Memory Circuit .......................................................................................................17
2.5. Decoder Circuit........................................................................................................18
2.6. Memory Map...........................................................................................................19
2.7. Print Head Circuit ....................................................................................................21
2.8. Stepping Motor Drive / Protection Circuit................................................................22
2.9. Power Circuit...........................................................................................................24
2.10. Parallel Interface Circuit ........................................................................................25
2.11. Serial Interface Circuit ...........................................................................................27
2.12. USB Circuit ...........................................................................................................28
2.12.1. USB PIN Function ......................................................................................29
2.13. Sensor Circuit ........................................................................................................31
2.13.1. Gap and Black Mark Sensor ........................................................................31
2.13.2. Head Open Micro Switch ............................................................................32
2.13.3. Peel-off Sensor............................................................................................33
2.13.4. Ribbon Sensor.............................................................................................34
2.14. Cutter Drive / Protection Circuit.............................................................................35
2.15. DC Motor Driver / Encoder Circuit........................................................................36
2.16. Summary of PCB connectors .................................................................................37
3. REPLACE IMPORTANT PARTS ........................................................................... 40
3.1. Replacing Top Cover................................................................................................40
3.2. Replacing Top Inner Cover ......................................................................................42
3.3. Replacing Lower Cover ...........................................................................................44
3.4. Replacing Main Board .............................................................................................45

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3.5. Replacing Platen Assembly......................................................................................46
3.6. Replacing the Stepping Motor Bracket / MetalAssembly and Stepping Motor .........47
3.7. Replacing Label Guide & Gap Sensor Assembly......................................................49
3.8. Replacing Black Mark Sensor Assembly..................................................................51
3.9. Replacing Print Head Assembly...............................................................................52
3.10. Replacing Head Open Micro Switch ......................................................................53
3.11. Replacing Ribbon Motor and Ribbon Sensor..........................................................55
3.12. Replacing Feed Button and Feed Button PCB ........................................................57
3.13. Install Memory Card (Option)................................................................................58
3.14. Install Peel Off Module (Option)............................................................................59
3.15. Loading the Label in Peel-off Mode.......................................................................61
3.16. Install Cutter Module (Option)...............................................................................63
3.17. Loading Label in Cutter Mode ...............................................................................67
3.18. Install Internal Ethernet Module (Option)...............................................................68
4. Power on Utilities ................................................................................................. 72
4.1 Ribbon and Gap/Black Mark Sensor Calibration.......................................................72
4.2 Gap/Black Mark Calibration；Self-test；Dump mode..............................................73
4.3 Printer Initialization ..................................................................................................76
4.4 Black Mark Sensor Calibration .................................................................................77
4.5 Gap Sensor Calibration .............................................................................................77
4.6 Skip AUTO.BAS ......................................................................................................77
5. GAP AND BLACK MARK SENSOR SELECTION ................................................ 79
6. BIOS Update.......................................................................................................... 79
7. TROUBLESHOOTING........................................................................................... 80
8. MAINTENANCE..................................................................................................... 84
9. PARTS LIST........................................................................................................... 85
9.1 Cover........................................................................................................................85
9.1 Cover drawing ..........................................................................................................86
9.2 Main Board...............................................................................................................87
9.2 Main Board drawing .................................................................................................88
9.3 Top Inner Cover........................................................................................................89
9.3 Top Inner Cover drawing ..........................................................................................91
9.4 Ribbon Mechanism Assembly...................................................................................92
9.4 Ribbon Mechanism Assembly drawing .....................................................................93
9.5.1 Lower Inner Cover.................................................................................................94
9.5.1 Lower Inner Cover drawing ...................................................................................95
9.5.2 Lower Inner Cover.................................................................................................96
9.5.2 Lower Inner Cover drawing ...................................................................................97
9.6 Stepping Motor Assembly.........................................................................................98

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9.6 Stepping Motor Assembly drawing ...........................................................................99
9.7 Option and accessories............................................................................................100
9.7 Option and accessories drawing ..............................................................................102
Update History........................................................................................................ 103

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1. FUNDAMENTAL OF THE SYSTEM
1.1. Overview
1.1.1. Front View
Fig. 1.1.1 Front View
Top Cover Open Lever
Ribbon Access Window
Feed Button
LED Indicator
Label Roll Capacity
View Window

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1.1.2. Rear View
Fig. 1.1.2 Rear View
1.2. Specification
1.2.1. Printer
Item
TTP-245
TTP-343
Mechanism
Resolution
203 dpi.
300 dpi
Max. Print Width
108 mm.
104 mm
Max. Print Length
1000 mm ( 39”).
420 mm
Ribbon Capacity
300 meter with 1”core. (Max. OD 67 mm)
Printing Speed
2, 3, 4 and 5 ips selectable.
peeler function
2, 3 ips selectable
3 ips selectable
Printing Method
Direct thermal and thermal transfer printing.
1. USB Interface
2. Centronics Interface
3. RS-232 Interface
4. Power Jack
5. Power Switch
6. Rear Paper Guide
1 2 3 4 5
6

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Enclosure
Structure
Dimension
Operation Panel
Double-walled plastic.
Standard Model: 314mm(L) x 213mm(W) x 188mm(H)
One push switch, and one indicator LED (Green,
Orange, Red colors).
Hardware
Sensor
Transmissive sensor (offset 6 mm from liner
edge).
Reflective sensor (position adjustable).
Head open micro switch.
Ribbon end sensor
Memory
2M byte Flash memory
2M bytes DRAM
Interface
RS-232C (max baud rate, 19,200 bps).
USB: V1.1.
Centronics.
Power
AC input: 100-240V universal auto switching power
supply.
DC output: 24V 3.75A.
Firmware
Font Type
8 alpha-numeric bitmap fonts, and 1 true type font.
Rotation
0, 90,180 and 270 degrees.
Barcode Format
1D Bar code
Code 39, Code 93, Code 128UCC, Code128 subsets
A.B.C, Codabar, Interleave 2 of 5, EAN-8, EAN-13,
EAN-128, UPC-A, UPC-E, EAN and UPC2(5) digits
add-on, MSI, PLESSEY, POSTNET, ChinaPOST,
ITF-14, EAN-14.
2D Bar code
PDF-417, Maxicode, and DataMatrix, QR CODE.
Command Set
TSPL2
Environment
Operation
Temperature: 5℃~ 40℃.
Relative Humidity: 25% ~ 85% (Non Condensing).
Storage
Temperature: -40℃~ 60℃.
Relative Humidity: 10% ~ 90% (Non Condensing).

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1.2.2. LED
LED Color
Description
Green/ Solid
This illuminates that the power is on and the device is
ready to use.
Green/ Flash
This illuminates that the system is downloading data
from PC to memory and the printer is paused.
Amber
This illuminates that the system is clearing data from
printer.
Red / Solid
This illuminates printer head open, cutter error.
Red / Flash
This illuminates a printing error, such as paper empty,
paper jam, ribbon empty, or memory error etc.
1.2.3. Button
Feed
Press the button when the LED is green.
It feeds the label to the beginning of the next label.
Pause
Press the feed button during printing
The printing job is suspended.
Ribbon Sensor and
Gap/Black Mark
Sensor Calibration
1. Turn off the power switch.
2. Hold on the button then turn on the power switch.
3 Release the button when LED becomes red and blinking.
(Any red will do during the 5 blinks).
It will calibrate the ribbon sensor and gap/black
mark sensor sensitivity.
The LED color will be changed as following order：
Amber red (5 blinks) amber (5 blinks) 
green (5 blinks) green/amber (5 blinks) 
red/amber (5 blinks) solid green
Note:
Please select gap or black mark sensor by GAP or
BLINE command prior to calibrate the sensor.
For more information about GAP and BLINE command,
please refer to TSPL2 programming manual.

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Gap/Black Mark
Sensor Calibratio,
Label Length
Measurement, Self
Test and enter Dump
Mode
1.Turn off the power switch.
2. Hold on the button then turn on the power switch.
3. Release the button when LED becomes amber and
blinking. (Any amber will do during the 5 blinks).
The LED color will be changed as following order.
Amber red (5 blinks) amber (5 blinks) 
green (5 blinks) green/amber (5 blinks) 
red/amber (5 blinks) solid green
It calibrates the sensor and measures the label
length and prints internal settings then enter the
dump mode.
Note:
Please select gap or black mark sensor by GAP or
BLINE command prior to calibrate the sensor.
For more information about GAP and BLINE command,
please refer to TSPL2 programming manual.
Printer Initialization
1. Turn off the power switch.
2. Hold on the button then turn on the power switch.
3. Release the button when LED turns green after 5 amber
blinks. (Any green will do during the 5 blinks).
The LED color will be changed as following:
Amber red (5 blinks) amber (5 blinks) 
green (5 blinks) green/amber (5 blinks) 
red/amber (5 blinks) solid green
Note:
Always do gap/black mark sensor calibration after
printer initialization.
Force Black Mark
Sensor Calibration
1. Turn off the power switch.
2. Hold on the button then turn on the power switch.
3. Release the button when LED turns green/amber after 5
green blinks. (Any green/amber will do during the 5
blinks).
The LED color will be changed as following:
Amber red (5 blinks) amber (5 blinks) 
green (5 blinks) green/amber (5 blinks) 
red/amber (5 blinks) solid green

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Force Gap Sensor
Calibration
1. Turn off the power switch.
2. Hold on the button then turn on the power switch.
3. Release the button when LED turns red/amber after 5
green/amber blinks. (Any red/amber will do during the 5
blinks).
The LED color will be changed as following:
Amber red (5 blinks) amber (5 blinks) 
green (5 blinks) green/amber (5 blinks) 
red/amber (5 blinks) solid green
Skip AUTO.BAS
1. Turn off printer power.
2. Press the FEED button and then turn on power.
3. Release the FEED button when LED becomes solid
green.
The LED color will be changed as following:
Amber red (5 blinks) amber (5 blinks) 
green (5 blinks) green/amber (5 blinks) 
red/amber (5 blinks) solid green
4. Printer will be interrupted to run the AUTO.BAS program.

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1.3. Supply Specification
1.3.1. Paper
Item
Specification
Type
Label (Continuous , Die-cut , Fan-fold).
Wound Type
Outside wound.
Width
20~112mm (0.78" ~ 4.4")
Length
( for peel and cutter )
10mm ~ 1000mm (0.4”~ 39”).
25.4mm ~ 1000mm (1”~ 39”).
Thickness
0.06mm ~ 0.19mm.
Roll Diameter
5”.
Roll Core Diameter
25.4mm ~ 76.2mm (1”~ 3”).
Gap Height
2mm min.
Black Mark Height
2mm min.
Black Mark Width
8mm min.
1.3.2. Ribbon
Item
Specification
Type
Wax, Wax / Resin, Resin.
Core Diameter
1".
Width
Max 110mm.
Capacity
300m with 1" core.
Wound Type
Outside wound.
Ribbon End
Clear or silver end tape.

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2. ELECTRONICS
2.1. Circuit Description
Fig.2.1 Circuit Diagram
The main board of printer includes 10 system blocks:
1. MCU.
2. Memory System.
3. Decoder System.
4. Print Head System.
5. Motor System.
6. Power System.
7. Communication Interface System.
8. USB System.
9. Sensor System.
10. Cutter System.

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The following figure shows the PCB system areas:
Sensor System
Cutter System
Memory System
Motor System
Print
Head
System
Power System
Decoder System
Communication
Interface System
USB System
MCU

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2.2. MCU Circuit and MCU PIN Description
Fig. 2.2 MCU PIN Description Diagram

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2.2.1. MCU PIN Description:

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2.3. Reset Circuit
Fig. 2.3 Reset Circuit Diagram
80945 reset IC is used to detect the voltage. When the driving voltage is lower than
4.5VDC, reset will be enabled.