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EPSON FX-2180 Service Manual Chapter 3 Troubleshooting
3-13
Table 3-8. Repairing the Printer Mechanism (Continued)
Problem Symptom Cause Checkpoint Solution
Printing is
uneven (lighter
or darker on the
left side of the
page than on
the right side).
Platen
parallelism is
not adjusted
properly.
Check the
platen
parallelism.
(See Chapter 5.)
Adjust the
platen
parallelism.
(See
Chapter 5.)
Printing is too
light.
The platen gap
is too wide.
Check the
platen gap. (See
Chapter 5.)
Adjust the
platen gap.
(See
Chapter 5.)
The print head
is defective.
Check if the tips
of the dot wires
are worn.
Replace
the print
head.
The print head
drivers on the
main board are
bad.
Check the print
head drivers on
the main board.
(See Table 3-7.)
Replace
the main
board.
Table 3-8. Repairing the Printer Mechanism (Continued)
Problem Symptom Cause Checkpoint Solution
Paper
feeding is
abnormal.
The PF motor
does not rotate
at all.
The PF motor is
defective.
Measure the coil
resistance of the
PF motor. It
should be
approx. 16.1 Ω.
(See Table 3-3.)
Replace
the PF
motor.
CN10 is not
properly
connected to the
main board.
Check the
connection.
Connect
CN10.
The front or rear
PE sensor is
defective.
Check the
operation of the
front and rear PE
sensors.
(See Table 3-2.)
Replace
the front or
rear PE
sensor.
The front or rear
PE sensor is not
installed
correctly.
Check the front
and rear PE
sensor
connections.
Install the
front and/or
rear PE
sensor
correctly.
When you turn
on the printer,
it ejects the
paper
automatically
and then
indicates it is in
the ready
state.
Foreign material
is stuck on the
TOP sensor.
Check the TOP
sensor.
Remove
any foreign
material
from the
TOP
sensor.
The TOP sensor
is defective.
Check the
operation of the
TOP sensor.
(See Table 3-2.)
Replace
the TOP
sensor.