4-24 Troubleshooting Rev. A
Error Types And Countermeasures
Follow the flowcharts on the next page depending on the ERROR LED blinking pattern, and
repair the printer. When an error occurs:
❏ The printer stops all operation
❏ The printer goes off-line
❏ The ERROR LED blinks
(*1) This error occurs for a short time during normal printing when print head reaches high
temperature. In this case no repair is necessary.
Table 4-5. ERROR LED Blinking Pattern
Error Error Description
ERROR LED blinking pattern
Action
(1) Memory or gate
array read/write error
Read/write check has
failed.
Action 1
(2) High-voltage error Power supply voltage is
too high.
Action 2
(3) Low-voltage error Power supply voltage is
too low.
Action 2
(4) CPU execution
error
CPU is trying to
execute an invalid
address.
Action 1
(5) Thermistor error Print head
temperature is
abnormal.
Action 1
(6) Auto-cutter error Auto-cutter does not
operate properly.
Action 3
(7) Home position
detection error
Home position could
not be detected
properly due to paper
jam in carriage etc.
Action 3
(8) Carriage detection
error
Carriage motor has
gone out of step due
to paper jam in
carriage or other
problem.
Action 3
(9) Slip paper eject
error
Slip paper is not
ejected properly after
being advanced.
Action 1
(10) Head high-
temperature error (*1)
Print head
temperature is too
high.
Action 1 (*1)
160ms
CONFIDENTIAL
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