Repairing The Printer Mechanism - Epson fx-2180 Service Manual

FX-2180 Service Manual

3.6 REPAIRING THE PRINTER MECHANISM

This section provides instructions for repairing the printer mechanism. It
describes various symptoms, likely causes, checkpoints and solutions. The
checkpoint columns show items to be checked, including proper values to
be set for each component of the printer mechanism. For replacement and
adjustment instructions, see Chapter 4 Disassembly and Assembly, and
Chapter 5 Adjustment. If the same symptom appears after repair, select
another item in the list of the causes and repair the printer according to the
instructions.
Table 3-15. Repairing the Printer Mechanism
Problem Symptom
CR CR motor dose
operation not rotate at all
is when the printer
abnormal. is turned on.
CR motor dose
not rotate at all
and LEDs blink
when the printer
is turned on.
CR motor
rotates when
the printer is
turned on. But
the CR unit
dose not move.
CR unit moves
slightly and then
stops.
Rev. A
Cause Checkpoint
CR motor is Measure the
defective. coil resistance
of the motor:
Approx. 2.7Ω
(Refer to Table
3-1.)
CN11 is Check CN11.
disconnected
from the
main board.
The timing Check the
belt comes timing belt.
off from the
pinion of CR
motor.
Platen gap is Check CR unit
too narrow. by moving it
smoothly by
hand.
Table 3-16. Repairing the Printer Mechanism (Continued.)
Problem
CR CR unit moves
operation slightly and
is then stops.
abnormal.
Solution
Replace
CR
motor.
Connect
CN11
correctly.
Replace
the
timing
belt.
CR motor
moves left (HP
side) and
Confirm
strikes the
the
frame in the
platen printer.
gap.
Adjust
platen
gap if
narrow.
Symptom Cause
− Move the CR
Lack of
lubrication or
foreign object
lodged in the
printer.
− Check CR
HP detector Check HP
is detective. detector. (Refer
to Table 3-2.)
A foreign Check the Hp
object is detector.
lodged in HP
detector.
CN4 is Check the
disconnected connection.
from Hp
detector.
HP detector Check HP
is failure. detector. (Refer
to Table 3-2.)
Troubleshooting
Checkpoint Solution
Replace
the oil
unit manually
pad or
to check if it
lubricate
moves
CR
smoothly
shaft.
Remove
shaft or oil pad
it and
for their
clean the
condition;
shaft,
dried up or
and
not.
lubricate
it.
Replace
HP
detector.
Remove
any
foreign
object.
Connect
CN4
correctly.
Replace
HP
detector.
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