Error Types And Countermeasures - Epson TM-U200 Series Technical Manual

C o n fid e n tia l

Error Types and Countermeasures

Follow the flowcharts on the next page based on the ERROR LED blinking patterns in the table
below and repair the printer. The printer does the following when an error occurs:
All operations stop
The printer goes off-line (when DIP SW 1-8 is off).
The ERROR LED blinks.
Error
(1) Head high-temper-
ature error ( 1)
*
(2) Auto cutter error
Home position
detection error
(3) High-voltage error (3) Memory or gate
array read/write
error
(4) Low-voltage error
(4) High-voltage error
(5) CPU execution
(5) Low-voltage error
error
(6) Print head
(6) CPU execution
error
temperature
detection error.
Auto-cutter error
(7) Thermistor error
( 1) This error can occur for a short time during normal printing, when the print head reaches a high temperature. No repair
*
is necessary in this case.
(*1) This error can occur for a short time during normal printing, when the print head reaches a high temperature. No
repair is necessary in this case.
** See troubleshooting flowchart.
4-16 Troubleshooting
Error Description
Print head temperature is too high.
There is an abnormality in the
Home position cannot be detected
auto cutter.
due to a paper jam or other problem.
Read/write check has failed. Power supply voltage is too high.
Power supply voltage is too high.
Power supply voltage is too low.
Power supply voltage is too low. CPU is trying to execute an invalid
address.
CPU is trying to execute an invalid
Print head temperature is out of
address.
normal operating range.
Abnormality occurs in the auto-cutter.
There is an abnormality in detecting
the print head temperature or the print
head rank can not be read correctly.
Figure 4-1 ERROR LED blinking patterns
ERROR LED Blinking Pattern
160 ms
Approx. 2.56 sec
Action
Action 1
Action 2
Action 3
Action 4
3
4
Action 5
4
Action 6
**
Action 7
4
Rev. A