TTP 243 Pro/ 243E Pro/ 342 Pro
Service Manual
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
Table of Contents
1. FUNDAMENTALS ABOUT THE SYSTEM .................................................................. 1
1.1 Features of the TTP-243 Series ................................................................................. 1
1.2 Model Naming Syntax ................................................................................................. 1
1.3 Overview .................................................................................................................... 2
1.3.1 Front View ........................................................................................................... 2
1.3.2 Rear View ........................................................................................................... 3
1.4 Basic Specifications .................................................................................................... 4
1.5 Effective Print Area ..................................................................................................... 6
1.6 Available Bar Codes ................................................................................................... 6
1.7 Various Sensors ......................................................................................................... 7
2. SUPPLY SPECIFICATIONS ............................................................................................. 9
2.1 Types of Paper ........................................................................................................... 9
2.2 Specifications ............................................................................................................. 9
2.3 Ribbon Sizes and Shapes ........................................................................................ 11
3. ELECTRONICS .............................................................................................................. 12
3.1 Summary of Board Connectors ................................................................................ 12
3.2 Pin Configuration ...................................................................................................... 14
4. MECHANISM .................................................................................................................. 16
4.1 Mainboard Replacement ........................................................................................... 16
4.2 Cutter Installation (Option / Not available for TTP-243E Pro model) ......................... 20
4.3 Print Head Replacement .......................................................................................... 21
4.4 DC Motor Replacement ............................................................................................ 23
4.5 Ribbon Rewind Spindle Encoder Replacement ........................................................ 24
4.6 Felt Fabric Replacement .......................................................................................... 25
4.7 Stepping Motor Replacement ................................................................................... 27
4.8 Black Mark Sensor / Gap Sensor (Receiver) Replacement ...................................... 28
4.9 Ribbon Sensor (Receiver) Replacement ................................................................... 29
4.10 Ribbon Sensor (Transmitter) / Gap Sensor (Transmitter) Replacement ................. 31
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
4.11 Platen Replacement ............................................................................................... 32
5. TROUBLE SHOOTING ................................................................................................... 35
5.1 Trouble Shooting ...................................................................................................... 35
5.2 Calibrate the Gap Register ....................................................................................... 36
5.3 Self-test .................................................................................................................... 36
5.4 Ram Clear ................................................................................................................ 36
5.5 Diagnosis Operation Procedure ................................................................................ 36
5.6 Testing Sensors ....................................................................................................... 37
5.7 Cleaning the Print Head ........................................................................................... 38
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
1. FUNDAMENTALS ABOUT THE SYSTEM
1.1 Features of the TTP-243 Series
1. This bar code printer prints bar codes, characters, logos, on various types of labels and tickets
by direct thermal or thermal transfer printing.
2 This printer adopts a “BASIC-like” high level programming language to help users programme
the desired label forms with ease.
3. This bar code printer can be connected to a personal computer or an optional LCD keyboard to
execute the programs downloaded in the printer’s memory. The printer is equipped with the
following standard devices: black mark sensor, peel off module and real time clock.
4. This bar code printer provides a selection of optional features, including cutter module, memory
module, portable LCD keyboard, etc.
5. The user friendly labeling software package is bundled with printer.
1.2 Model Naming Syntax
T T P – 2 4 3
(1) (2) (3) (4)
(1) Print method:
TTP – Thermal Transfer Printing
TDP – Thermal Direct Printing
(2) Resolution of print head (DPI)
(3) Maximum print width (Inch)
(4) Maximum print speed (Inch/Sec)
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
1.3 Overview
1.3.1 Front View
1. Cover Release Button
2. PWR., ON-LINE and ERR. Indicators
3. PAUSE Button
4. FEED Button
5. Label Dispense Opening
6. Liner Opening (For use with peel-off function/ Not available for 243E series
printer)
3
4
2
1 5 6
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
1.3.2 Rear View
1. Power On/Off Switch
2. Power Supply DC Jacket
3. RS-232C Interface Connector
4. USB Interface Connector
5. Label Insert Opening (For use with external media)
6. Centronics Interface Connector (Factory option)
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2 3 4
5
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
1.4 Basic Specifications
Thermal transfer and direct thermal printing
High dot density printing (243 Pro series: 203 dots/inch, 342 Pro series: 300 dots/inch)
Selectable print speeds at 1.5”, 2.0” or 3.0” per second (243 Pro series: 1.5, 2 and 3 ips /
342 Pro series: 1, 1.5 and 2 ips)
Supports RS-232 serial and USB interface (Factory option for RS-232 and Centronics
interface)
Maximum media width up to 4.49” (114 mm)
Adjustable label edge guide
International character sets
Print area：TTP-243 Pro/243E Pro：4.09” W x 90” L；TTP-342 Pro：4.09”W x 40”L (without any
file downloaded in the printer memory)
User selectable bar code ratios and heights
Prints on labels or tickets
Equipped with black mark sensor
Equipped with Real Time Clock (Not available for TTP-243E Pro)
Comes with self-peeling function (Not available for TTP-243E Pro)
Buzzer provided to warn of possible errors (Not available for TTP-243E Pro)
Label stock and thermal transfer ribbon are easy to install
Internal label print counter
Self test and hex dump mode
Downloadable fonts from label design software
Electronics/Communication Specifications
Electrical
DC Motor: DC24V
Memory:
─SDRAM: 8 Mb
─Flash: 4 Mb
Adapter 100~240VAC10%, 50~60Hz
Regulations: FCC Class A, CE Class A, C-Tick Class A, TÜ V/Safety, CCC
Communications Interface:
Serial port: RS-232C (DB-9) at 2400, 4800, 9600 or 19200 baud rate
─Word Length: 7 or 8 data bits, 1 or 2 stop bits, selectable parity
─Handshaking: XON/XOFF and DSR/DTR
Parallel port: Standard parallel interface
Input Buffer: 64KB
RS-232 Interface Pin Configuration:
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
Host Function
9 Pin
25 Pin
9 Pin
Printer Function
1 +5V
RxD
2 3 2 TxD
TxD
3 2 3 RxD
DTR
4
20 4
DSR
GND
5 7 5 GND
DSR
6 6 6 RDY
RTS
7 4 7 N/C
CTS
8 5 8 RDY
9
+5V
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
1.5 Effective Print Area
Label/Ticket Length
12mm~2286mm
Effective Print
Length
10mm~2284mm
Label/Ticket Width
25mm~103mm
Effective Print Width
23mm~101mm
No Print Area
1mm
1.6 Available Bar Codes
1D bar code
Code 39, Code 93, Code128UCC, Code128 subsets A.B.C, Codabar, Interleave 2 of 5,
EAN-8, EAN-13, EAN-128, UPC-A, UPC-E, EAN and UPC 2(5) digits add-on, MSI,
PLESSEY, POSTNET, RSS-Stacked, RSS14, Code 11, China Post
2D bar code
PDF-417, Maxicode, DataMatrix, QR code, Aztec
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
1.7 Various Sensors
Feed Gap Sensor
The feed gap sensor detects a label gap to locate the starting print position of the next
label. The sensor is mounted 4 mm off the center line of the main mechanism.
.
In case of Label
Black Mark Sensor
The black mark sensor locates the position of label by emitting infrared rays onto the
black mark at the back of the ticket. The sensor is mounted 5.75 mm off the center line of
the ticket roll width on the mechanism.
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
In case of Ticket
The default sensor position is (1) as shown on the figure below. To change to the (2)
position, the customer should notify the manufacturer in advance. There can be only one
position for the sensor. Once the sensor position is agreed upon, it can not be changed
afterwards.
Ribbon End Sensor
The sensor detects the end portion of the ribbon. The ribbon end must be transparent.
Label End Sensor
The sensor detects the end portion of the label.
Peel off Sensor
The sensor detects the backing paper of a label.
Ribbon encoder
The encoder is used to detect if the ribbon is broken.
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
2. SUPPLY SPECIFICATIONS
2.1 Types of Paper
Two types of media are available for TTP-243: label and ticket.
In TTP-243, there are two types of sensors for paper: gap sensor and black mark sensor.
Label and ticket can be further classified into direct thermal type or thermal transfer type.
2.2 Specifications
Items
Label
Paper Width
Max.114mm
Min. 25mm
Length (Pitch)
12～2286mm
Paper
Thickness
0.20 mm
Paper Weight
Max 240 g/m2
Max. Roll
Diameter
(1” core)
Inner roll diameter. Max 4.3” (110mm)
External roll diameter. Max 8.4”
(214mm)
Roll Up Method
Print surface wound outside as
standard
Paper Core ID.
25.7±0.3mm
Note:
(1). The width and thickness quoted above are said of the label plus its backing paper.
(2). Likewise, the approval of label entails that of its backing paper.
(3). In the peel off mode, the minimum pitch is 35mm.
(4). In the cutter mode, it is required the paper be wound outside. Otherwise, paper jam
tends to result.
(5). In the cutter mode, the paper thickness is 0.2 mm at maximum, and the paper weight is
100 g/m2 at maximum.
(6). Paper shape is as shown on next page.
(7) Tag is 0.2mm in thickness, and is less than 100g/m2 in weight.
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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
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