Rev. B
Troubleshooting 4-9
TM-U200D/U200PD Technical Manual
Troubleshooting Tables
If a problem that can be verified by visual examination has occurred, use the Troubleshooting
Tables to determine the cause and perform repairs.
The tables contain the following columns:
❏
Problem
This is the symptom that can be verified.
❏
Probable cause
This is a listing of one or several possible causes that should be examined.
❏
Level
Level A
The problem can be corrected by persons who are familiar with the printer and
have general knowledge, but special technical skills are not required.
Level B
The problem requires thorough knowledge and familiarity with the printer as
well as technical skills and experience.
❏
Checkpoint
These are one or more areas in the printer that should be checked.
❏
Action
These are the steps to correct the problem. If the problem persists after taking these steps,
check the other possible causes listed.
Table 4-1 Troubleshooting table for printer operation failure
Problem
Probable cause
Level
Checkpoint
Action
The POWER LED
does not light
when the
power is on.
The AC adapter may
be bad.
B
Check the output voltage of
the AC adapter. (approx. +40
VDC with unloaded)
Replace the AC adapter.
The fuse may be
blown.
B
Check if the fuse F1 on the
Main circuit board ass’y is
blown.
Replace fuse F1. (See
“Replacing the Fuse” in
Chapter 5.)
B
Check if fuse (R42) on the Main
circuit board ass’y is blown
Replace the Main circuit
board.
The main PCB may be
bad
B
The cause is none of the
above.
Replace the main PCB.
The printer does
not print the self
test.
The main PCB may be
bad.
B
Check the self test using
another Main circuit board unit.
Replace the main PCB.
The FEED button may
be bad.
B
Check the continuity of the
FEED button (SW2).
Replace SW2.
The printer
mechanism assembly
may be bad.
B
The cause is none of the
above.
Replace the mechanism
assembly.
Summary of Contents for TM U200D - B/W Dot-matrix Printer
Page 2: ...technical manual TM U200D U200PD EPSON English 4005680 ...
Page 4: ...EPSON SEIKO EPSON CORPORATION Printed in Japan E9608130 0000SE ...
Page 145: ...Rev B Disassembly Assembly and Adjustment 5 49 TM U200D U200PD Technical Manual ...
Page 146: ...5 50 Disassembly Assembly and Adjustment Rev B ...
Page 147: ...Rev B Disassembly Assembly and Adjustment 5 51 TM U200D U200PD Technical Manual ...
Page 148: ...5 52 Disassembly Assembly and Adjustment Rev B ...
Page 154: ...Appendix A 6 Rev B Main Circuit Board A Parts Layout ...
Page 155: ...Rev B Appendix A 7 TM U200D U200PD Technical Manual Main Circuit Board C Parts Layout ...
Page 156: ...Appendix A 8 Rev B RS 232 Serial Interface Circuit Board Parts Layout ...
Page 169: ...Rev B A 21 TM U200D U200PD Technical Manual Case Unit Lubrication Points Diagram ...
