TSC TTP-243 Series User manual

TTP/TDP 243/342
SERVICE
MANUAL
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER

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TTP-243 Bar Code Printer
Service Manual
Table Of Contents
1. FUNDAMENTALS ABOUT THE SYSTEM ........................................................................ 1
1.1 Features of the TTP/TDP-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 Circuit Description...................................................................................................... 12
3.2 MCU Pin Description.................................................................................................. 15
3.3 Reset Circuit............................................................................................................... 17
3.4 Memory System ......................................................................................................... 17
3.5 Connector Circuit Diagram......................................................................................... 18
3.6 Real-Time Clock Circuit.............................................................................................. 20
3.7 Decode Circuit............................................................................................................ 21
3.8 Thermal Head Drive/ Protection and History Control Circuit...................................... 23
3.9 24V/5V Converter Circuit............................................................................................ 24
3.10 Stepping Motor And DC Motor Driver/ Protection Circuit......................................... 25
3.11 Communication (Serial & Parallel Port) Circuit......................................................... 27
3.12 Cutter Drive Circuit................................................................................................... 28
3.13 Mainboard Replacement.......................................................................................... 29

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3.14 Flash memory Replacement .................................................................................... 33
3.15 Cutter, DC Motor, Stepping Motor Driver IC Replacement ...................................... 34
4. MECHANISM.................................................................................................................... 35
4.1 Cutter Installation ....................................................................................................... 35
4.2 Print Head Replacement............................................................................................ 36
4.3 DC Motor Replacement.............................................................................................. 38
4.4 Ribbon Rewind Spindle Encoder Replacement ......................................................... 39
4.5 Felt Fabric Replacement............................................................................................ 40
4.6 Stepping Motor Replacement..................................................................................... 42
4.7 Black Mark Sensor / Gap Sensor (Receiver) Replacement....................................... 43
4.8 Ribbon Sensor (Receiver) Replacement.................................................................... 44
4.9 Ribbon Sensor (Transmitter) / Gap Sensor (Transmitter) Replacement.................... 46
4.10 Platen Replacement................................................................................................. 47
4.11 Parts List .................................................................................................................. 50
5. TROUBLE SHOOTING..................................................................................................... 60
5.1 Error Messages.......................................................................................................... 60
5.2 Trouble Shooting........................................................................................................ 61
5.3 Calibrate the Gap Register......................................................................................... 62
5.4 Self-test...................................................................................................................... 62
5.5 Ram Clear..................................................................................................................62
5.6 Diagnosis Operation Procedure................................................................................. 62
5.7 Testing Sensors ......................................................................................................... 63
5.8 Cleaning the Print Head............................................................................................. 65

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TTP-243 Bar Code Printer
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1. FUNDAMENTALS ABOUT THE SYSTEM
1.1 Features of the TTP/TDP-243 Series
1. TTP-243 bar code printer prints bar codes, characters, logos, on various types of labels and
tickets by direct thermal or thermal transfer printing.
2 TTP-243 adopts a “BASIC-like” high level programming language to help users programme
the desired label forms with ease.
3. TTP-243 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. TTP-243 bar code printer provides a selection of optional features, including cutter module,
memory module, portable LCD keyboard, etc.
5. The user friendly “Label Today!” package is bundled with TTP-243.
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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1.3 Overview
1.3.1 Front View
Fig. 1.1 Front View of TTP-243
Note: The one difference between TTP model and TDP model is the ribbon
mechanism.
Front Panel
Cover Release Button
Top Cover
Operation Panel

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1.3.2 Rear View
Fig. 1.2 Rear view of TTP-243
DC Power Jack
RS
-
232 Interface
Centronics Interface
Label
Entrance
(External
Mount Use)
Power
Switch

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1.4 Basic Specifications

Thermal transfer and direct thermal printing

High dot density printing (203 dots/inch)

Selectable print speeds at 1.5”, 2.0” or 3.0” per second

Supports parallel and serial interface

Maximum media width up to 4.4” (114 mm)

Adjustable label edge guide

International character sets

Print area is 4.09”W x 90”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

Comes with self-peeling function

Buzzer provided to warn of possible errors

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
CPU: MITSUBISHI M37720S1BFP
TPH: ROHM 4” KF-2004-GC17B
Stepping Motor: Mitsumi
DC Motor: DC24V
Memory: ─DRAM: MOSEL 2 Mb.
─Flash: ATMEL 1 Mb
Adapter 100~240VAC±10%, 50~60Hz
Regulations: CE, FCC, UL, CUL, TÜV-GS, CNS

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: 60KB

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
RS-232 Interface Pin Configuration:
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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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

Code 39

Code 93

Code 128 UCC

Code 128, Subsets A, B, and C

Codabar

Interleaved 2 of 5

EAN-8, EAN-13, EAN-128

UPC-A, UPC-E

EAN and UPC with 2 or 5 digits add-on

UPC Shipping container code

Postnet

Maxicode

PDF-417

DataMatrix

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1.7 Various Sensors
(1) 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
(2) 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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 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.
(3) Ribbon End Sensor
The sensor detects the end portion of the ribbon. The ribbon end must be transparent.
(4) Label End Sensor
The sensor detects the end portion of the label.
(5) Peel off Sensor
The sensor detects the backing paper of a label.
(6) Ribbon encoder
The encoder is used to detect if the ribbon is broken.

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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
Max.114mm
Paper Width Min. 25mm
Length (Pitch) 12∼2286mm
Paper
Thickness 0.20 mm
Paper Weight Max 240 g/m2
Inner roll diameter. Max 4.3” (110mm)
Max. Roll
Diameter
(1” core) External roll diameter. Max 8.4”
(214mm)
Roll Up Method Print surface wound outside as standard
Paper Core ID. φ25.7±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/m2at maximum.
(6). Paper shape is as shown on next page.
(7) Tag is 0.2mm in thickness, and is less than 100g/m2in weight.

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2.3 Ribbon Sizes and Shapes
Item Specifications
Ribbon shape Spool type
Max. 110mm
Ribbon width Min. 40mm
Max. 110mm
Ribbon winding width Min. 40mm
Leading tape Polyester film, 335±5mm long
End tape Polyester film (transparent), 250±5mm long
Max. ribbon OD. φ67mm
Winding method Ink surface to be wound outside
Note: The maximum length of ribbon depends on its thickness and core outside diameter.
The formula below defines the correlation between ribbon roll length and ribbon core
diameter.
t4 )d(D
=L 22 π
×−
, where
L = Ribbon length
D = Max. roll diameter
d = Ribbon core outside diameter
t = Ribbon thickness

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3. ELECTRONICS
3.1 Circuit Description
L1
C1
10u
+5V
OUT 1 VCC
2
GND
3
U2
S-807
C2
0.1u
+5V
C3
20P
C4
20P
X1
16MHz
DO0 DO1 DO2 DO3 DO4 DO5 DO6 DO7
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
A8
A9
A10
A11
A12
A13
A14
A15
12 U7A 74LS05
34 U7B 74LS05
56 U7C
74LS05 8 9
U7D
74LS05
R8
3.3K R9 1.8K R10 910 R11 430
R13
1M
R/W
/RAS
/CAS
/E
1011 U5E
74HC04
ST0
ST1
RDY
C7
0.1u
1
23
U24A
74HC32
4
56
U24B
74HC32
8
9
10
U24C
74HC32
蜂鳴器
L5
L21
C70
0.1u
C49
0.1u
P67/RTP13
1P66/RTP12
2
P65/RTP11
3
P64/RTP10
4P63/RTP03
5
P62/RTP02
6
P61/RTP01 7
P60/RTP00
8
P57/TB1IN
9
P56/TB0IN 10
P55/TA4IN 11
P54/TA4OUT 12
P53/TA3IN
13
P52/TA3OUT 14
P51/TA2IN 15
P50/TA2OUT 16
P107/MA9 17
P106/MA8 18
P105/RAS 19
P104/CAS 20
P103/TC
21
P102/INT2
22
P101/INT1 23 P100/INT0 24
P47/DBC
25 P46/VPA
26 P45/VDA
27
P44/QCL 28
P43/MX 29
30
RDY
31
HOLD
32
BYTE
33
CNVSS
34
RESETOUT
35 RESET 36
XIN
37
XOUT
38
E39
VSS
40
VCC
41
ST0 43
ST1 42
ALE 44
BLE
45
BHE
46
R/W 47
A23/D7 48 A22/D6 49 A21/D5 50 A20/D4 51 A19/D3 52 A18/D2 53 A17/D1 54 A16/D0 55
A15/D15 56
A14/D14 57
A13/D13 58
A12/D12 59
A11/D11 60
A10/D10 61
A9/D9 62
A8/D8 63
A7/MA7 64
A6/MA6 65
A5/MA5 66
A4/MA4 67
A3/MA3 68
A2/MA2 69
A1/MA1 70
A0/MA0 71
P97/DMAREQ3
72
P96/DMAACK3
73
P94/DMAACK2
75
P92 77
P95/DMAREQ2
74
P93/DMAREQ1 76
P91/DMAREQ0 78
P90/DMAACK0
79
P87/TXD1 80
P86/RXD1
81
P85/CLK1 82
P84/CTS1/RTS1 83
P83/TXD0
84
P82/RXD0
85
P81/CLK0
86
P80/CTS0/RTS0
87
VCC
88
AVCC
89
VREF
90
AVSS
91
VSS
92
P77/AN7 93
P76/AN6 94
P75/AN5 95
P74/AN4
96
P73/AN3
97
P72/AN2
98
P71/AN1 99
P70/AN0 100
U1
M37721S1AFP
MA[0..9]
RX1
RX2
TX1
TX2
PE
/ERROR
SELECT
INT
COMMUNICATION SYSTEM
RX1
RX2
TX1
TX2
PE
/ERROR
SELECT
INT
PHASE1
PHASE2
PHASE3
I1
I0
DCM
CUTTER
MOTOR
R/W
MOTOR SYSTEM
PHASE1
PHASE2
PHASE3
I1
I0
DCM
CUTTER
MOTOR
R/W
/RAS
DRAMWR
/OE
DRAMOE
R/W
MEMORY SYSTE
M
/RAS
DRAMWR
/OE
DRAMOE
R/W
DI
/LAT
CLK
PH_HEAT
HISTORY
PH
TM
Vdet
PRINT SYSTEM
DI
/LAT
CLK
PH_HEAT
HISTORY
PH
TM
Vdet
ALE
DO[0..7]
ST0
ST1
MA[0..9]
A[8..15]
GAP_EMITTER
BUZZER
CUTTER SENSOR
DECODER SENSOR
GAP SENSOR
B.L. SENSOR
PEEL SENSOR
FEED BUTTON
PAUSE BUTTON
RIBBON SENSOR
POWER LED
ONLINE LED
ERROR LED
PH_DETECT SENSOR
Fig. 3.1 MCU Circuit Diagram
The above is the MCU circuit diagram.
The main board of TTP-243 includes five system blocks:
A. Memory System (decoder & memory block)
B. Motor System (stepping motor, DC motor and cutter block)
C. Print head System
D. Communication System (serial & parallel port block)
E. Power System
The figure below shows the PCB system area.

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Motor System Communication Port
Real Time Clock
Memory
Decoder System
Print Head
Cutter System Memory System External Memory
Connector
Power System

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Fi
g
. 3.2 S
y
stem Block of PCB

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3.2 MCU Pin Description
Pin Name Input/Output Function
Vcc, Vss Power supply Supply 5V±10% to Vcc and 0V to Vss.
CNVss CNVss input Input This pin controls the processor mode.
Connect to Vss for single-chip mode,
and to Vcc for external ROM types.
/RESET Reset input Input To enter the reset state, this pin must be
kept at “L” condition, and maintained for
the required time.
XIN Clock input Input
XOUT Clock output Output
These are I/O pins of internal clock
generating circuit. Connect a ceramic or
quartz crystal resonator between XIN and
XOUT. When an external clock is used,
the clock source should be connected to
the XIN pin, and the XOUT pin and should
be left open.
/E Enable output Output Data/instruction read and data write are
performed when output from this pin is
“L”.
BYTE Bus width
selection input Input In memory expansion mode or microprocessor mode, this pin
determines whether the external data
bus is 8-bit width or 16-bit width. The
width is 16 bits for “L” signal input and 8
bits for “H” signal input.
/HOLD /HOLD input
pin Input This is an input pin for the /HOLD request signal.
/RDY /RDY input pin Input This is an input pin for the /RDY signal.
ψ1 Clock ψ1
output Output This is theψ1 output pin which is divided the clock XIN pin by 2.
ST0, ST1 Status signal
output pin Output The bus use status output is generated in 2-bit code
AVcc, AVss Analog supply
input Power supply for the A-D converter. Connect AVCC and AVSS to VSS
externally.
VREF Reference
voltage input Input This is reference voltage input pin for the A-D converter.
A0/MA0~
A7/MA7 Address low-order/DRA
M address
Output This is an output pin for the 8 low-order
bits of addresses. When the DRAM is to
be accessed, the row and column
addresses are generated by means of
time division multiplexing.

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A8/D8~
A15/D15 Address medium-order/
data high-order
I/O When the BYTE pin is set to “L” in memory
expansion mode or microprocessor mode and
external data bus is 16-bit width, high-order
data (D15~D8) is input or output when /E
output is “L” and an address (A15~A8) is
output when /E output is “H”.
If the BYTE pin is “H” that is an external data
bus is 8-bit width, only address (A15~A8) is
output.
A16/D0~
A23/D7 Address high- order/data
low-order
I/O In memory expansion mode or microprocessor
mode low-order data (D7~D0) is input or output
when /E output is “L” and an address (A23~A16) is
output when /E output is “H”.
R/W, /BHE
ALE, /BHE Memory Control signal output Output These are R/W, /BHE, ALE, and /BLE output pins.
P40~P47 I/O port P4 I/O This port is provided 5-bit I/O. As it has an I/O
register, it is possible to perform programming to
determine whether each bit serves as an input pin
or an output pin.
P50~P57 I/O port P5 I/O This port is used for 8-bit I/O. It has basically the
same function as port P4. In addition, it provides
the timer A2, timer A3, timer A4 I/O pins and
TimeB0 and TimeB1 input pins.
P60~P67 I/O port P6 I/O This port is used for 8-bit I/O. It has basically the
same function as port P4. In addition, pins P60
through P63 and pins P64 through P67 are
capable of functioning as a 4-bit real-time output,
respectively.
P70~P77 I/O port P7 I/O This port is used for 8-bit I/O. It has basically the
same function as port P4. In addition, it provides
the input pins for analog inputs AN0 through AN7.
Pin P77 is also used for A-D conversion start
trigger input.
P80~P87 I/O port P8 I/O This port is used for 8-bit I/O. It has basically the
same function as port P4. In addition, it provides
RxD, TxD, CLK, /CTS//RTS terminals for UART 0
and UART 1.
P90~P97 I/O port P9 I/O This is an 8-bit I/O port. It has basically the same
function as port P4. In addition, it provides the
DMA request input pin and DMA acknowledge
signal output pin.
P100~P107 I/O port P10 I/O This is an 8-bit I/O port. It has basically the same
function as port P4. In addition, it provides the
/INT0, /INT1, /INT2 input pins, /TC I/O pins, and
/RAS, /CAS, MA8, MA9 output pin.

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3.3 Reset Circuit
OUT 1 VCC
2
GND
3
U2
S-807
C2
0.1u
VCC
/RESET
CONNECT WITH MCU RESET PIN
Fig. 3.3 Reset Circuit
This is the reset circuit .The 80746ALO IC outputs the system reset signal of “LOW”
when the driving voltage is lower than 4.6V (Typical).
3.4 Memory System
VCC 1
DQ0 2
DQ1 3
DQ2 4
DQ3 5
VCC 6
DQ4 7
DQ5 8
DQ6 9
DQ7 10
NC 11
NC 12
W
13
RAS
14
NC/A11
15 NC/A10
16
A0
17
A1
18
A2
19
A3
20
VCC 21
GND
22
A4
23
A5
24
A6
25
A7
26
A8
27
A9
28
OE
29
UCAS
30 LCAS
31
NC 32
DQ8 33
DQ9 34
DQ10 35
DQ11 36
GND
37
DQ12 38
DQ13 39
DQ14 40
DQ15 41
GND
42
U15
TMS416160P
/RAS
DRAMWR A18
1
A16
2A15
3
A12
4
A7
5A6
6A5
7A4
8A3
9A2
10 A1
11 A0
12 AD0 13
AD1 14
AD2 15
GND 16
AD3 17
AD4 18
AD5 19
AD6 20
AD7 21
CE 22
A10
23
OE 24
A11
25
A9
26 A8
27
A13
28
A14
29
A17
30
WE 31
VCC 32
U16
29C040
A[0..18]
MA[0..9]
DO[0..7]
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7 A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
/OE
DRAMOE
ROM1
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
/LCAS
/UCAS
R/W
VCC
VCC
DO[0..7]
MA[0..9]
A[8..18]
A18
1
A16
2A15
3
A12
4
A7
5A6
6A5
7A4
8A3
9A2
10 A1
11 A0
12 AD0 13
AD1 14
AD2 15
GND 16
AD3 17
AD4 18
AD5 19
AD6 20
AD7 21
CE 22
A10
23
OE 24
A11
25
A9
26 A8
27
A13
28
A14
29
A17
30
WE 31
VCC 32
U25
29C040
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
VCC
ROM2
Fig. 3.4 FLASH ROMS and DRAM Diagram
This is the memory circuit. The U16&U17 type 512K Byte FLASH ROM and U15 type
2M Byte DRAM are used. The MCU R/W pin becomes “H” when reading Flash ROM or
DRAM, and “L” when writing.