Service manual
Table Of Contents
- Revision Table
- Introduction
- Chapter 1
- Features and General Specifications
- Chapter 2
- Mechanism Configuration and Operating Principles
- Printer Mechanism Operating Principles
- Print mechanism unit
- Print head unit movement
- Wire movement when a single dot is printed
- Printing a character (9x9 font)
- Paper Feed Mechanism Unit
- Paper loading (semi-automatic loading)
- Paper feeding
- Ribbon Feed Mechanism Unit
- Ribbon feeding
- Detection Mechanism Unit
- Home position detection mechanism
- Paper detection mechanism
- Paper roll near-end detection mechanism (optional)
- Auto-cutter mechanism
- Ribbon Switch Mechanism Unit
- Electrical Circuitry Operating Principles
- Principles of Operation
- Printer Mechanism Driver Circuits
- Printer Mechanism Operating Principles
- Chapter 3
- Handling and Maintenance
- Chapter 4
- Troubleshooting
- Chapter 5
- Disassembly, Assembly, and Adjustment
- Small Part Specifications
- Disassembly
- Sub-assembly A
- Main Assembly 1
- Main Assembly 2
- Main Assembly 3
- Main Assembly 4
- Main Assembly 5
- Main Assembly 6
- Main Assembly 7
- Main Assembly 8
- Main Assembly 9
- Main Assembly 10
- Main Assembly 11
- Main Assembly 12
- Main Assembly 13
- Main assembly 14
- Main Assembly 15
- Main Assembly 16
- Main Assembly 17
- Main Assembly 1 (Case Unit)
- Main Assembly 2 (Case Unit)
- Main Assembly 3 (Case Unit)
- Main Assembly 4 (Case Unit)
- Main Assembly 5 (Case Unit)
- Main Assembly 6 (Case Unit)
- Main Assembly 7 (Case Unit)
- Main Assembly 8 (Case Unit)
- Main Assembly 9 (Case Unit)
- Main Assembly 10 (Case Unit)
- Main Assembly 11 (Case Unit)
- Main Assembly 12 (Case Unit)
- Adjustment
- Appendix
- Appendix
- Addendum 1
- Main Circuit Board Types and Maintenance
- Addendum 2
- Lower Plate Change and ROM Spacer Abolition
- Addendum 3
- Auto-Cutter Release Tab Change
Rev. B Appendix A-18
TM-U200 Series (Type B) Service Manual
Confidential
RS-232 Serial Interface Board
TP2
DK 1
1
DK S
2
PG
3
PG
4
+24V
5
+24V
6
PG
7
HOST RTS
8
CTS
9
RTS
11
I/F DET
10
CLKOUT/DTR
12
CLKREQ
13
SG
14
+5V
15
DK 2
16
DK G
17
DK P
18
PG
19
+24V
20
+24V
21
PG
22
SG
23
SD
24
RD
25
(RES)
26
#25_RESET
27
DSR_RESET
28
#RESET
29
SG
30
CN2
DSR
RTS
TO MAIN BOARD
DSR
+12V
+5V
C1
VCC
16
C2+
4
C2-
5
R1I
13
R2I
8
T1O
14
T2O
7
GND
15
V+
2
C1+
1
C1-
3
R1O
12
R2O
9
T1I
11
T2I
10
V-
6
U1
C2
C7
DSR
SD
RD
DTR
FG
1
SD/SD1
2
RD/SD2
3
RS/RD1
4
/RD2
5
DR/INIT1
6
SG
7
/DR1
8
/DR2
9
/CS1
10
/CS2
11
12
13
14
15
16
17
18
19
ER
20
21
22
23
24
INIT2
25
SHELL
0
CN1
SG
RTS
TO HOST
C3
DTR
SD
DSR
RD
+
1
2
V
SG
RTS
DTR
SD
RD
+5V
+
5
V
+
5
V
SG
RTS
SG
DSR_RESET
#25_RESET
C5
R1
R21
Q1
RD
SD
DTR
R
T
S
+5V
SG
SG
SG
TP1
10K
10K
+12V
-12V
R7
R3
10K
10K
Q2
+
5
V
+12V
RTS
#
2
5
|
R
E
S
E
T
D
S
R
|
R
E
S
E
T
D1
D2
R5
R2
R16
R4
R17
R18
C6
3
2
1
8
4
U2A
R20
S
G
DSR
R11
#25INIT
D3
D4
-12V
R13
R14
R6
R15
C4
R10
R19
R12
5
6
7
U2B
SG
+12V
-12V
R9
R8
-12V