Service manual

CT-292/293 Series Service Manual
● Paper Feed Failure
Phenomenon Cause Check Method Remedies
The motor connector has a
bad connection.
Check the connecting
condition of the connector.
Connect the connector
correctly.
The motor is faulty. Measure the supply voltage
with a tester or oscilloscope.
Replace “MOTOR ASSY”.
The supply voltage is low. Check the supply voltage
with a tester.
Use the printer within the
specified supply voltage
range.
The control PCB is faulty.
−
Replace “UNIT, MAIN PCB”.
The platen roller is not
mounted correctly.
Check the mounting
condition of the platen roller.
Mount the platen roller
correctly.
Paper feed is faulty. Check if paper is jammed,
torn or caught in the paper
path.
Remove unnecessary paper
and set the paper correctly.
Paper is not fed.
Paper feed is not
straight.
Foreign substances are stuck
in the gear. A gear is broken.
Check the gear for any
foreign substance or
breakage.
Eliminate foreign substance.
If any gear is broken, replace it
with a new one.
● Faulty Sensor
Phenomenon Cause Check Method Remedies
Paper presence or
absence cannot be
detected. Paper near
end cannot be detected.
The paper sensor is faulty. Check the indication at the
LCD or LED when the paper
ends.
Replace “SA, PE PCB”.
The sensor at the operation
panel cover is faulty.
Correctly attach the
operation panel cover and
check again.
Replace “UNIT, MAIN PCB”.
An error cannot be reset.
The front cover switch is faulty. After setting paper and
closing the front cover,
check if the error is reset.
Replace the front cover
switch.
● Auto Cutter Failure (CT-P293)
Phenomenon Cause Check Method Remedies
The connector has a bad
connection.
Check the connecting
condition of the connector at
the control PCB.
Connect the connector
correctly.
The auto cutter is faulty. Measure the supply voltage
with a tester or oscilloscope.
If the supply voltage is normal,
replace the auto cutter with a
new one.
The control PCB is faulty.
−
Replace “UNIT, MAIN PCB”.
The auto cutter does not
operate.
Paper feed is faulty.
(paper jams)
Check if paper is jammed,
torn or caught in the paper
path.
Remove unnecessary paper
and set the paper correctly.
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