1-10 Troubleshooting Rev.D
Confidential
Roll paper cover open error The roll paper cover
(rear cover) was
detected as open
when printing.
Close the roll paper cover (rear cover).
Memory or gate array R/W error The R/W check did
not operate
properly for the
memory or the
gate array.
Replace the main circuit board unit to see if the
printer is repaired. (See page 2-96.)
High voltage error The power supply
voltage is high.
Replace the power supply unit to see if the printer is
repaired. (See page C-4.)
Low voltage error The power supply
voltage is low
Replace the power supply unit to see if the printer is
repaired. (See page C-4.)
CPU execution error An abnormal CPU
operation was
detected, or the I/F
board is
disconnected.
1. Check whether the I/F board is connected.
2. Replace the main circuit board unit to see if the
printer is repaired. (See page 2-96.)
Drive circuit error One of the
following was
detected.
❏
Print head
thermistor
detection error
❏
Lever drive motor
assembly error
1. Check if the printer is repaired after replacing the
print head unit. (See page 1-15.)
2. Check the resistance of the lever drive motor
assembly. (See page 1-11.) Replace if shorted.
3. Check if the printer is repaired after replacing the
lever motor T. P. detector assembly. (See page 2-
78.)
4. Check if the printer is repaired after replacing the
main circuit board unit. (See page 2-96.)
Head high temperature error/roll
paper error
One of the
following problems
has occurred.
❏
The roll paper
has been
inserted into the
path wrong.
❏
The print head
temperature is
high.
1. If the error has occurred after loading the roll
paper, the roll paper has been inserted into the
path wrong. Reinstall the roll paper.
2. If the error occurred during printing, a high head
temperature has been detected. This error may
occur if you print continuously for too long. Leave
the printer as it is. The error will be automatically
cleared when the temperature has decreased. If
this error occurs frequently, check if the ambient
temperature is within specifications.
Table1-2 Error causes and solutions
Type of Error and ERROR LED Pattern Explanation
Solutions
(Listed in the order you should use to check printer)
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