Table 5-8. Repairing thePrinter 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. ConnectCN10
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