Rev. B
Mechanism Configuration and Operating Principles
TM-U200D/U200PD Technical Manual
Host interface circuit
The printer has the universal interfaces for connection to the host computer. There are three
kinds of the interfaces:
❏
EIA/TIA RS-232 Interface (TM-U200D)
❏
IEEE 1284 Interface (*1) (TM-U200PD)
(*1) Copyright 1994 by the Institute of Electrical and Electronic Engineers, Inc.
❏
EIA/TIA RS-485 Interface (option)
Refer to the Interface Circuit Board Diagrams in the Appendix.
Drawer kick-out drive circuit
Activating the DKD1 and DKD2 signals from the CPU (U5) causes the transistors Q29 and Q30
to be turned On. This causes then transistor array QM5 to be turned On and the drawer drive
signal is output. The drawer status signal DK_S, which indicates whether or not the drawer is
open, is input to the CPU (U5), allowing the host to check the status via the interface.
The +24V drawer power supply is supplied via the regulator IC (U2), which cuts off the supply
in case of excessive current.
Figure 2-22 Drawer kick-out drive circuit
{
5 V
R28
{
5 V
Q34
C39
Q29
Q30
D2
R48
R47
8
6
4
2
9
7
5
3
1
1
0
QM5
C45
G
N
D
VI VO
U2
1
2
3
4
5
6
FG
DKD 1P
DKD SW
{
24V
DKD 2P
SG
CN2
DKD
U5
62
63
10
P32
P33
P63
+
C16
+
D8
{
5 V
R13
DC 24-30V IN
D8
D46
Содержание TM U200D - B/W Dot-matrix Printer
Страница 2: ...technical manual TM U200D U200PD EPSON English 4005680 ...
Страница 4: ...EPSON SEIKO EPSON CORPORATION Printed in Japan E9608130 0000SE ...
Страница 145: ...Rev B Disassembly Assembly and Adjustment 5 49 TM U200D U200PD Technical Manual ...
Страница 146: ...5 50 Disassembly Assembly and Adjustment Rev B ...
Страница 147: ...Rev B Disassembly Assembly and Adjustment 5 51 TM U200D U200PD Technical Manual ...
Страница 148: ...5 52 Disassembly Assembly and Adjustment Rev B ...
Страница 154: ...Appendix A 6 Rev B Main Circuit Board A Parts Layout ...
Страница 155: ...Rev B Appendix A 7 TM U200D U200PD Technical Manual Main Circuit Board C Parts Layout ...
Страница 156: ...Appendix A 8 Rev B RS 232 Serial Interface Circuit Board Parts Layout ...
Страница 168: ...Rev B A 20 TM U200D U200PD Technical Manual Case Unit Lubrication Points Diagram 2 color Print Version ...
Страница 169: ...Rev B A 21 TM U200D U200PD Technical Manual Case Unit Lubrication Points Diagram ...