TTP/TDP 248M/2410M
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER
SERVICE
MANUAL
TTP-248M/2410M Bar Code Printer
Service Manua
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TABLE OF CONTENT
1. Foundamentals About the System ............................................................................. 1
1.1 Printer Overview................................................................................................ 1
1.1.1 Front View............................................................................................... 1
1.1.2 Rear View ............................................................................................... 2
1.2 Pinter Specification ........................................................................................... 2
1.3 Available Bar Codes.......................................................................................... 4
1.4 Text Specification .............................................................................................. 5
Specification of Fonts....................................................................................... 6
File Head of Font ( Fixed 32bytes ).................................................................. 6
VF1~4 .............................................................................................................. 7
BF3~4 VF3~4................................................................................................... 7
2. Supply Specifications ................................................................................................. 8
2.1 Types of Paper.................................................................................................. 8
2.2 Specification...................................................................................................... 8
2.3 Ribbon Specification ......................................................................................... 9
3. Circuit Description................................................................................................. 10
3.1 MCU.............................................................................................................. 10
3.2 MCU PIN Description ...................................................................................... 12
3.3 Reset Circuit.................................................................................................... 21
3.4 Memory System .............................................................................................. 22
3.5 Decoder Circuits.............................................................................................. 23
3.6 Memory Map ................................................................................................... 23
Area P2.......................................................................................................... 23
3.7 Firmware Address Map ................................................................................... 25
SDRAM Address Map.................................................................................... 26
3.8 Power Down Sensor........................................................................................ 27
3.9 Print Head ....................................................................................................... 28
3.10 Motor System Circuit..................................................................................... 29
3.11 Sensor Circuits .............................................................................................. 30
3.12 Serial Port Circuit .......................................................................................... 33
3.13 Parallel Port Circuit ....................................................................................... 34
3.14 Cutter Drive System ...................................................................................... 35
3.15 PIN Switch Circuits........................................................................................ 36
3.16 Connector Circuits......................................................................................... 36
3.17 Optional Items Circuits .................................................................................. 39
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4. Machanism............................................................................................................ 41
4.1 Remove the Covers and LCD Panel ............................................................... 41
4.2 Replacing the Mainboard ................................................................................45
4.3 Replacing the Power Supply Unit.................................................................... 47
4.4 Replacing the Ribbon Rewind Spindle ............................................................ 48
4.5 Replacing Ribbon Supply Spindle and Ribbon Near End Sensor ................... 51
4.6 Replacing Label Supply Spindle...................................................................... 53
4.7 Replacing Label Rewind Spindle..................................................................... 54
4.8 Replacing Platen ............................................................................................. 55
4.9 Replacing Motor.............................................................................................. 57
4.10 Replacing Print Head .................................................................................... 58
4.11 Replacing Print Head Pressure Adjustment Knob ......................................... 59
4.12 Replacing Gap/Black Mark Sensor ............................................................... 60
4.13 Replacing Ribbon End Sensor ...................................................................... 62
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4.14 Replacing Print Head Lift Lever Sensor ........................................................ 63
5. Part Lists .................................................................................................................. 64
6. Troubleshooting........................................................................................................ 69
6.1 Troubleshooting............................................................................................... 69
6.2 Calibrate Gap/Black Mark Sensor ................................................................... 71
6.3 Self-test........................................................................................................... 71
6.4 DRAM Clear.................................................................................................... 72
6.5 Diagnosis Operation Procedure ...................................................................... 72
6.6 Cleaning Print Head ........................................................................................ 72
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TTP-248M/2410M Bar Code Printer
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1. FOUNDAMENTALS ABOUT THE SYSTEM
1.1 Printer Overview
1.1.1 Front View
Printer Cover
Aux. LED
LCD Display
Fig. 1.1 Printer Front View
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1.1.2 Rear View
Aux. Buzzer
Centronics Port
External Label
Feed Opening
RS-232C Port
Voltage Switch
Power Supply
Connector
Fig. 1.2 Printer Rear View
1.2 Pinter Specification
Item Specification
Printing Mode Thermal transfer and direct thermal
Resolution 203 DPI
Max. Print Length 999 mm
Max. Print Width 104 mm
Print Speed Selectable speed of 4,6,8 inch per second
Environment
Temperature 5 ~40
Humidity 30 ~ 85 %
O
C
Temperature -10 ~ 60 OC
Humidity 20 ~ 95 %
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Ventilation Free air environment
Sensors
Memory
Interface RS-232C 56000bps ( Max.), Centronics
Cutter 116 mm width (Paper thickness up to 0.28 mm)
Power
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Label gap (256-level), ribbon end (16-level), black
mark (256-level), carriage open, ribbon near end
Flash Memory 2MB, DRAM 4MB and optional Flash
100 VAC to 120 VAC, 200 VAC to 240 VAC
Switching mode power supply.
Input Frequency : 50Hz to 60Hz
Input Current : 4.0 Amps at max.
Inrush Current :
40 Amps max. (cold start) at 115 VAC input line
voltage.
80 Amps max. (cold start) at 230 VAC input line
voltage.
Electrical
CPU HITACH SH 7709A
TPH ROHM KF2004-GL41D 550Ω
Stepping Motor
Memory
Compliance CE, UL/CUL, BSMI, FCC Class A, TÜV-GS
Communication
Word Length 7 or 8 data bits, 1 or 2 stop bits, selectable parity
Communication Protocol XON/XOFF and DSR/DTR
Mitsumi 24V 7.5 Degrees 4Ω Japan Servo KH56KM
SDRAM, 1M×16Brt×2 7ns
Flash Memory: (512K×16Bit) ×2 70ns
Communication Interface
RS-232C (DB-9) at 2400, 4800, 9600 or 19200 38400,
56000, 57600, 115200, 128000, 50000 baud rate
Parallel Port Standard parallel interface
Input Buffer 10KB
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RS-232 Interface Pin Configuration:
Host
Function
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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9 Pin 25 Pin 9 Pin Printer Function
1 +5V
1.3 Available Bar Codes
Code 39
Code 39C
Code 93
Code128UCC
Code128 subsets A.B.C
Code 11
Codabar
Interleave 2 of 5
EAN-8
EAN-13
EAN-128
UPC-A
UPC-E
EAN and UPC 2(5) digits add-on
CPOST
MSI
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PLESSEY
POSTNET
EAN-14
ITF14
PDF-417
Maxicode
DataMatrix
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1.4 Text Specification
Font Width x Length
Font 1 8x12
Font 2 12x20
Font 3 16x24
Font 4 24x32
Font 5 32x48
Font 6 14x19 OCRB
Font 7 21x27 OCRB
Font 8 14x25 OCRA
Font Width x Length
EAN 1 7x10
EAN 2 14x22
EAN 3 21x33
EAN 4 28x43
EAN 5 35x52
EAN 6 42x64
EAN 7 49x74
EAN 8 56x85
EAN 9 63x97
EAN 10 70x107
Font 1 to Font 8 are all build-in fonts and BF1 fonts.
EAN 1 to EAN 10 are the fonts used on Barcode UPC and EAN series (they
content numbers only).
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The above are the fonts we approve on our printers.
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Specification of Fonts
Fixed Pixel Variable Pixel Singed byte Double byte Decode by Table
BF1
BF2
BF3
BF4
VF1
VF2
VF3
X X
X X
X X X
X X X
X X
X X
X X X
VF4
X X X
File Head of Font ( Fixed 32bytes )
Offset 0 B->Bitmap font
Offset 1 0->Fixed pixel 1->Variable Pixel
Offset 2 0->Singed Byte Decode 1->Double Byte
Decode
Offset 3 Decode by table
Offset 4 0-> None 1->Italic
Offset 5-6 Font Height
Offset 7-8 Font Width
Offset 9-10 Font decode start
Offset 11-12 Font decode end
Offset 13 Font decode type
Offset 14 Reversed
Offset 15-16 Font character total
Offset 17-18 Italic Width Variable
Offset 19-31 Reversed
If ( BF1 BF2 VF1 VF2 )
Offset 32-xx : Font Data
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Else if( BF3 BF4 VF3 VF4 )
Offset 32-xx : Decoded Table
Offset xx-xx : Font Data
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VF1~4
Font data of variable pixel
(width low byte)(width high byte) Font Data
Font of variable printing spacing is two-bite-width of word in front of the data of every
word.
BF3~4 VF3~4
Decode Table
(char low byte) (char high byte) (offset 4 bytes ==> file start to font data)
The font with decade table, the previous two bytes of every word is the code of the
word, and the later four bytes is the displacement from the file head to the position of
the data of the word.
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2. SUPPLY SPECIFICATIONS
2.1 Types of Paper
Two types of media are available for TTP-248M/2410M : label and ticket.
In TTP-248M/2410M, 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 Specification
Item Specification
Type Label (Continuous, die-cut, fan-fold, ticket, Tag etc.)
Label Width
Label Length
Label Thickness
Label Roll Diameter 203 mm
Paper Core ID 25.7± 0.3 mm
Paper Weight Less than 280 g/m2
Rewinder Roll diameter 138 mm (Max.) with 1" core
Label Roll Diameter
without Rewinder
Roll Core Diameter 25 ~ 77 mm
Black Mark Height 1.5 mm ( Min.)
19∼118 mm ( 0.7”∼4.65” )
10∼999 mm ( 0.4”∼39.33” )
0.06∼0.25 mm
254 mm (Max.) with 3" core
Black Mark Width 3 mm ( Min.)
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2.3 Ribbon Specification
Item Specification
Ribbon Shape Spool type
Ribbon Width
Ribbon Length 450 m
Diameter Less than 3.5” ( 89 mm)
Roll Up Method Print surface wound outside as standard.
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
25.4∼114.3 mm
diameter.
22
)d(D
= L
L = Ribbon length
D = Max. roll diameter
d = Ribbon core outside diameter
t = Ribbon thickness
π×−
t4
where
,
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3. CIRCUIT DESCRIPTION
3.1 MCU
U32
INDUCTOR1
BK_IO
BK_IO.SCH
B_OUT1
B_OUT1
B_OUT2
B_OUT2
B_IN1
B_IN1
B_IN2
B_IN2
B_IN3
B_IN3
AD1
AD1
AD2
AD2
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
BC2
0.1uF
BC16
0.1uF
BC26
0.1uF
VCC
BC30
0.1uF
VMM
B_IN1
B_IN2
B_IN3
AD1
AD2
B_OUT1
B_OUT2
JP4
CENTRONIC
GNDDIGITAL GND
BC3
BC4
0.1uF
0.1uF
BC17
BC18
0.1uF
0.1uF
BC27
BC28
0.1uF
0.1uF
BC31
BC32
0.1uF
0.1uF
38
37
/Write
1
D0
2
D1
3
D2
4
5
D3
6
D4
7
D5
8
D6
9
D7
10
Intr
/Wait
11
12
PE
13
SELECT
/DStrb
14
15
16
17
18
VCC
A0
A1
PR14
A2
A3
A4
10K
PR15
A5
A6
A7
10K
A8
PR16
A9
A10
A11
10K
A12
PR17
A13
A14
A15
10K
A16
PR18
A17
A18
A19
A20
10K
PR19
A21
A22
A23
10K
A24
R31
A25
10K
R32
10K
VDD
JP10
GND
1 2
3 4
5 6
LCD_D0
7 8
LCD_D1 LCD_D2
9 10
LCD_D3 LCD_D4
11 12
LCD_D5 LCD_D6
13 14
LCD_D7 LCD_CS1
15 16
LCD_CS2 LCD_/RES
17 18
LCD_R/W LCD_D/I
19 20
LCD_E
LED1 LED2
LED3
KEY2 KEY3
PR8
R17
10K
/AStrb
ERROR
/Init
VCC3
BC5
BC6
0.1uF
0.1uF
VCC
BC19
BC20
0.1uF
0.1uF
VCC
BC11
C26
0.1uF
0.1uF
BACKLIGHT
21 22
23 24
KEY1
25 26
27 28
RY
29 30
PANL
VDD
VDD
AGND
10K
10K
10K
PR5
PR6
PR7
10K
VDD R18
R19
10K
BC7
BC8
BC9
BC10
0.1uF
0.1uF
0.1uF
0.1uF
BC21
BC22
BC23
BC24
BC25
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
B
y
p
BC12
0.1uF
a
BC13
BC14
BC15
BC29
s
0.1uF
0.1uF
0.1uF
0.1uF
s
C
a
p
a
c
i
t
o
r
l
i
s
t
R80
120
L13
INDUCTOR1
L14
INDUCTOR1
R81
PR21
R29
10K
Q3
2SC2411K
74HCT14
U6B 74HCT14
74HCT14
PR9
/RESET
CLK
ROM1
10K
VDD
R68
100
U6A 74HCT14
1 2
10 11
U6E 74HCT14
34
56
10K PR10 10K
VDD
R37
1K
AVSS
L15
INDUCTOR1
PR20
10K
PE
SELECT
ERROR
AVSS
LCD_D0
LCD_D1
LCD_D2
LCD_D3
LCD_D4
LCD_D5
LCD_D6
LCD_D7
LCD_CS1
LCD_CS2
LCD_W/R
LCD_D/I
LCD_E
LCD_BL
PE
SELECT
ERROR
B_OUT1
B_OUT2
D0
D1
D2
D3
D4
D5
D6
D7
Intr
/Wait
/DStrb
/AStrb
/Init
L4
0
DIGITAL GND
120
/Write
PR11
10K
JP28
1
2
2PIN
JP3
1
6
2
7
3
8
4
9
5
GND
DB9_1
HSC945
HSC945
VDD
Q5
Q4
R39
10K
R69
R70
100
AGND
100
220p
220p
220p
PC1
PC2
PC3
100
PR22
100
PR23
100
PR24
100
PR25
R56
100
VDD
10K
10K
PR2
PR3
PR1 10K
DI1
DI1
DI2
DI2
DI3
DI3
DI4
DI4
/RESET_PH
/RESET_PH
/LAT
/LAT
STB1
STB1
STB2
STB2
Vdet
STB3
Vdet
STB3
Vdet
TM
TM
STB4
TM
STB4
CLK
CLK
PRINT.SCH
PRINTHEAD
PC4
PR4
PEEL_SENS
VDD
F1
1A
MEMORY.SCH
MEMORY
D[0..31] A[0..25]
D[0..31] A[0..25]
/RESET
/RESET
CLK
CLK
CS0
CS0
CS0
CS2
CKE
CS2
CKE
CS2
CS3
/WE
CS3
/WE
CS3
/RD
/RD
/WE0/DQMLL
/WE0/DQMLL
DQMLU
DQMLU
/CAS
/CAS
SCK
/RAS3L
SCK
/RAS3L
SCK
SDI
SDRAM
SDI
SDRAM
SDI
SDO
ROM1
SDO
ROM1
SDO
CSI
ROM2
CSI
ROM2
CSI
ROM3
ROM3
DQMUL
ROM4
DQMUL
ROM4
DQMUL
DQMUU
DQMUU
DQMUU
C391uVDD
VDD
R33
R34
R82
GND
R35
R36
10K
10K
4.7K
10K
10K
VDD
R38
10K
GND
RED
YELLOW
220p
C5
220p
U6F
12 13
U6C
10K
U6D
8 9
10K
74HCT14
PH_I
/LAT_P
MOTOR
MOTOR.SCH
EN_MB
EN_MB
INA_R
INA_R
/INA_R
/INA_R
INB_R
INB_R
/INB_R
/INB_R
EN_MA
EN_MA
EN_CUTTER
EN_CUTTER
/BK
/BK
PHASE
PHASE
MOTER_C
MOTER_C
MOTER_C
CTSENS
CTSENS
CTSENS
PEEL_SENS
PEEL_SENS
VDD
AVCC VCC
L5
0
VCC
1
8
VCC
R+
2
7
RxD
R-
3
6
TxD
D-
5
GND4D+
GND
LTC490
TX
L8
RX
BEAD 300
L10
RDY
L9
DSR
BEAD 300
BEAD 300
/RESET
3
2021222324
39
143
120
GSR
121
124
125
126
128
129
130
131
132
133
134
135
136
137
138
139
140
142
98
100
101
102
103
104
105
106
107
110
111
112
113
115
17
16
15
14
13
12
11
10
9
88
87
86
85
83
82
81
80
97
74
91
GND
GTS4
GND
GND89GND
GND
GND
GND
GND
GND
62
72
90
99
108
114
123
144
GND
VCC
C12
16
0.1uGND
C17
L7
BEAD 300
GND
47
BUZZER_O
0.1u
2
6
C11
0.1u
GND
14
13
7
8
RTC_O
32
38
35
GCK2
GCK3
34
33
31
28
27
26
25
30
GCK1
64
66
68
69
70
71
79
43
44
45
46
48
49
50
51
52
53
67
TCK
122
TDO
63
TDI
65
TMS
141
VCCINT
84
VCCINT
42
VCCINT
8
VCCINT
127
VCCIO
109
VCCIO
73
VCCIO
55
VCCIO
37
VCCIO
1
VCCIO
59
58
57
56
54
2
GTS3
4
5
GTS1
6
GTS2
7
19
96
95
94
93
92
60
61
116
117
118
119
40
41
7576
77
78
GND
GND
GND
18
29
36
VCC
R40
10K
1
C1+
V+
VCC
C10
0.1u
3
C1-
4
C2+
C9
0.1u
5
C2-
12
R1OUT
11
T1IN
9
R2OUT
10
T2IN
GND
15
GND
L24
R137
BEAD 0805 NB 220
100
A20
A21
A22
A23
JP1
VCC
A24
1
A25
2
3
GND
4
5
6
JTAG
VCC
VCC
R95
10K
JP27
2
1
BK
VCC CSI
2PIN
R41
GND
PR12
10K
U4E
10K
PH_I
10 11
74HC14
STB1_I
STB2_I
STB3_I
STB4_I
RA
RB
U3F
12 13
R24
1.5K
U4F
74HC14
R67
100
R64
74HC14
100
B1
4
3
2
R25
1
10K
BUZZER
GND
R23
1.5K
VDD
R71
1213
100
U31
SP3232E
D0
D1
D2
D3
D4
D5
D6
D7
PE_I
SELECT_I
ERROR_I
TXD
BUZZER
V-
T1OUT
R1IN
T2OUT
R2IN
1
2
JP5
2PIN
VCC
VCCL
L1
L3
0
0
VCC1VCC2
175
154
134
29
3
145
150
111
163
183
21
Vcc
Vcc
Vcc
Vcc81Vcc
174
RxD2/SCPT4
168
TxD2/SCPT4
176
CTS2/IRQ5/SCPT7
170
RTS2/SCPT6
157
STATUS0/PTJ6
158
STATUS1/PTJ7
166
TxD1/SCPT2
172
RxD1/SCPT2
167
SCK1/SCPT3
P21
169
SCK2/SCPT5
171
P22
RxD0/SCPT0
164
TXD
TxD0/SCPT0
165
SCK0/SCPT1
VCC
196
MD4
195
MD3
GND
CKE
105
CKE/PTK5
/WE
93
/WR/RD
/RD
88
/RD
DQMLL
89
/WE0/DQMLL
DQMLU
90
/WE1/DQMLU//WE
91
DQMUL
/WE2/DQMUL//ICIORD/PTK6
92
DQMUU
/WE3/DQMUU//ICIOWR/PTK7
108
/CAS
/CASLL/CAS/PTJ2
106
/RAS3L
/RAS3L/PTJ0
107
BK
/RAS2L/PTJ1
CLK
162
CKIO
CS0
96
/CS0/MCS0
CS2
98
/CS2/PTK0
CS3
99
/CS3/PTK1
102
/CS6//CE1B
A0
53
A0
A1
54
A1
A2
55
A2
56
A3
A3
58
A4
A4
60
A5
A5
61
A6
A6
62
A7
A7
63
A8
A8
64
A9
A9
A10
65
A10
A11
66
A11
A12
67
A12
A13
68
A13
A14
70
A14
A15
72
A15
73
A16
A16
74
A17
A17
75
A18
A18
76
A19
A19
77
A20
A20
78
A21
A21
80
A22
A22
82
A23
A23
84
A24
A24
86
A25
A25
Intr_I
139
TRST/PTF4/PINT12
/DStrb_I
133
PTG1/AUTADA1
/AStrb_I
131
PTG2/AUTADA2
/Init_I
130
PTG3/AUTADA3
120
PE_I
TDO/PTE0
119
SELECT_I
/CAS2U/PTE1
118
VCC
ERROR_I
/RAS3U/PTE2
187
BUZZER_O
/MCS1/PINT1/PTC1
188
BUZZER
/MCS0/PINT0/PTC0
185
/MCS3/PINT3/PTC3
180
/MCS4/PINT4/PTC4
179
/MCS5/PINT5/PTC5
178
/MCS6/PINT6/PTC6
177
/MCS7/PINT7/PTC7
/LAT_P
186
/MCS2/PINT2/PTC2
94
RA
PTE7
116
RB
/CAS2L/PTE6
MA
104
/CE2B/PTE5
103
MB
/CE2A/PTE4
ME
117
/CAS2H/PTE3
VCC
JP2
RNE_END
VMM
AVcc
AVss
AVCC
205
198
L2
0
BC1
10uF
AVSS
JP11
2
1
Q1
BUZZER
HSC945
194
VccQ59VccQ71VccQ85VccQ97VccQ
VccQ
VccQ
VccQ47VccQ35VccQ
Vcc-RTC
Vcc-PLL1
Vcc-PLL2
SH7709A
VssQ57VssQ69VssQ83VssQ95VssQ
VssQ
VssQ
VssQ19VssQ33VssQ
AVss
45
109
161
181
208
C20
0.01uF
VCCL
VCC
3
VDD
R3
4
3.0K
5
R2
C77
C78
3.4K
0.1uF
0.1uF
GND GND
GND
RTC_O
L30
0
C18
GND
22pF
X2
32.768kHz
C3
470pC4470p
5
147
148
146
149
CA
CAP1
CAP2
EXTAL2
Vss-PLL1
Vss-PLL2
U2
XC95144XL
Vss79Vss27Vss
Vss
Vss
Vss
Vss-RTC
MD5
/RESETM
/RESETP
6
132
152
153
173
197
124
193
VCC
VCC
/RESET
R130
U10
10K
VCC3
1
/RST
VCC5
2
GND
VCC
VCC
VCCA
GND
LTC1728
R28
10K
SW1
SW-PB
GND
D[0..31]
L31
C19
0
15pF
15pF
22pF
GND
C2
C1
16MHz
X1
155
4
159
156
VCC
U1
144
MD0
1
MD1
2
XTAL
XTAL2
MD2
EXTAL
52
D0
TCLK/PTH7
D0
51
D1
D1
50
D2
D2
49
D3
D3
48
D4
D4
46
D5
D5
44
D6
D6
43
D7
D7
42
D8
D8
41
D9
D9
40
D10
D10
39
D11
D11
38
D12
D12
37
D13
D13
36
D14
D14
34
D15
D15
D16
32
PTA0/D16
D17
31
PTA1/D17
D18
30
PTA2/D18
28
D19
PTA3/D19
26
D20
PTA4/D20
25
D21
PTA5/D21
24
D22
PTA6/D22
23
D23
PTA7/D23
22
D24
PTB0/D24
20
D25
PTB1/D25
18
D26
PTB2/D26
17
D27
PTB3/D27
16
D28
PTB4/D28
15
D29
PTB5/D29
14
D30
PTB6/D30
13
D31
PTB7/D31
143
/IRLS0/PTF0/PINT8
1 2
113
/CASHH/PTJ5
74HC14
112
/CASHL/PTJ4
110
/CASU/CASLH/PTJ3
140
PTF3/PINT11
141
/IRLS2/PTF2/PINT10
142
/IRLS1/PTF1/PINT9
R_END0
190
DRAK1/PTD0
R_END1
189
DRAK0/PTD1
R_END2
184
RESTOUT/PTD2
R_END3
182
WAKEUP/PTD3
191
REND_SENS
/DREQ0/PTD4
114
RED
/DACK0/PTD5
192
/DREQ1/PTD6
115
YELLOW
/DACK1/PTD7
138
B_IN1
TRST/PTF5/PINT13
137
B_IN2
TRST/PTF6/PINT14
136
B_IN3
PTF7/PINT15
129
PTG4
128
/ASEBRKAK/PTG5
127
/ASMDO/PTG6
126
IOIS16/PTG7
151
PTH6
125
PEEL_SENS
ADTRG/PTH5
GAP_SENSER
12
IRQ4/PTH4
CTSENS
11
/IRL3/IRQ3/PTH3
BM_SEN
10
/IRL2/IRQ2/PTH2
HEAD_SENS
9
/IRL1/IRQ1/PTH1
8
CASE_SENS
/IRLO/IRQ0/PTH0
100
/CS4/PTK2
SCK
101
/CS5//CE1A/PTK3
SDI
87
/BS/PTK4
135
SDO
PTG0/AUTADA0
201
AD2
AN2/PTL2
200
AD1
AN1/PTL1
199
AN0/PTL0
207
DA0/AN7/PTL7
MOTER_E
206
DA1/AN6/PTL6
TH_SENS
202
AN3/PTL3
203
AN4/PTL4
204
AN5/PTL5
/WAIT
/BACK
/BREQ
/IRQOUT
NMI
SH-7709A
7
123
121
122
160
VCC
AVSS AVSS
R30
10K
JP9
1
2
NMI
GND
GND
HEAD_SENS
CASE_SENS
R_END
REND_SENS
POWER power.sch
U3A
R59
U3B
3 4
74HC14
5 6
74HC14
U5B
5
6
LM324
VDD
411
3
2
GND
C23
R60
0.1uF
100
D2
AVCC AVCC
D3
1N4148
1N4148D41N4148D51N4148
R12
1K
TM Vdet
P_INT
P_INT
820
U3C
U3D
74HC14
R58
10 11
U5A
LM324
10
9
U3E
SENSOR
SENSOR.SCH
U
9
-
>
100
U9D
74LS05
7
1
U5C
LM324
C24
0.1uF
HEAD_SENS
HEAD_SENS
CASE_SENS
CASE_SENS
R_END
R_END
REND_SENS
REND_SENS
R57
100
5 6
74HC14
R61
100
R13
1K
1 2
U9C
74LS05
89
U9A
74LS05
8
TTP-2410_MAIN
LED3
LED2
LED1
GND8 9
C82
0.1u
3 4
R27
4.7K
GND
R126
100
U9E
1011
74LS05
U9F
1213
74LS05
VCC
R20
R21
R22
10K
10K
10K
100
R138
KEY3
R139
KEY2
100
KEY1
100
R140
C83
C84
0.1u
0.1u
GND
U9B
R84
3.3K
R85
R_END
74LS05
1.8K
R86
910
R87
430
VCC
JP12
R66
1
2
100
3
4
BM_E
5
GAP_E
R26
6
10K
7
GAP
VDD
Q14
HSC945
R65
100
Q15
GND
HSC945
R63
100
MOTER_C
GND
C25
R62
0.1uF
100
AVCC
D6
1N4148D71N4148
R14
1K
R10
R11
1K
10K
AVSS
Fig. 3.1 MCU Circuit Diagram
The mainboard of TTP-248M/2410M includes seven 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
F. Sensor System
G. LCD Display System
10
TTP-248M/2410M Bar Code Printer
y
Service Manua
The figure below shows the PCB system area :
Print Head
Connector
l
Communication Port
Decoder
System
Power
System
MCU
External
Memory
Connector
Memory
S
stem
Option A/D
Convert
Option I/O
Motor
System
Fig. 3.2 System Block of PCB
11
Sensor Connector Cutter System
TTP-248M/2410M Bar Code Printer
Service Manua
l
3.2 MCU PIN Description
12
TTP-248M/2410M Bar Code Printer
Service Manua
l
13
TTP-248M/2410M Bar Code Printer
Service Manua
l
14
TTP-248M/2410M Bar Code Printer
Service Manua
l
15
TTP-248M/2410M Bar Code Printer
Service Manua
l
16
TTP-248M/2410M Bar Code Printer
Service Manua
l
17
TTP-248M/2410M Bar Code Printer
Service Manua
l
18
TTP-248M/2410M Bar Code Printer
Service Manua
l
19
TTP-248M/2410M Bar Code Printer
Service Manua
l
20
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