Epson FX-2170 Service Manual page 138

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