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Table 5-8. Repairing the Printer Mechanism
Problem
Symptom Cause Checkpoint Solution
Abnormal
paper feed
The PF motor does
not rotate at all.
CN10 is
disconnected
from the main
board.
Check CN10. Connect CN10
correctly.
^
The rear or front
PE sensor is
defective.
Check the
operation of the
rear and front PE
sensors. Refer to
page 5-2.
Replace the rear
or front PE
sensor. Refer to
page 3-23.
^
The rear or front
PE sensor is not
mounted
correctly.
Check the
mounting
position.
Mount the rear or
front PE sensor
into the proper
position.
^
When the printer is
powered on, paper
is ejected
automatically, and
then the printer
becomes Ready.
A foreign
substance is
sticking to the
surface of the
PW sensor.
Check the
surface of the
PW sensor.
Remove the
ribbon mask
holder assembly,
and remove any
foreign objects.
^
The PW sensor
is defective.
Check the
operation of the
PW sensor.
Refer to page 5-2.
Replace the PW
sensor. Refer to
page 3-9.
^
When the printer is
powered on, paper
is ejected
automatically, and
then the printer
signals a paper
end error.
A foreign object
is jammed
between the
platen and
rear/front PE
sensor.
Remove the
platen, and
check the paper
path. Refer to
page 3-10.
Remove the
platen and
remove any
foreign object.
Refer to page
3-10.
^
CN5 or CN6 is
disconnected.
Check the
connectors.
Connect the
connector
properly.
^
The rear/front
PE sensor is
defective.
Check the
operation of the
rear/front PE
sensor.
Refer to page 5-2.
Replace the
rear/front PE
sensor. Refer to
page 3-23.
^
When paper is
loaded, it is
ejected
automatically.
The FFC (CN7)
for the PW
sensor is
disconnected.
Check the
connector.
Connect the FFC
properly.
^
The FFC is
broken.
Check the
continuity of the
FFC using a
multimeter.
Replace the FFC.
^
The PW sensor
is defective.
Check the
operation of the
PW sensor.
Refer to page 5-2.
Replace the PW
sensor. Refer to
page 3-9.
FX-2170 Service Manual Troubleshooting
Rev.A 5-17