FX-1180/FX-880 Service Manual
Chapter 3 Troubleshooting
Rev. B
3-16
3.5 REPAIRING THE PRINTER MECHANISM
For detailed procedures for replacing or adjusting matter, refer to Chapter 4,
Disassembly and
Assembly and Chapter 5, adjustments. If a problem or symptom occurs, refer to the following
tables and find out other potential causes.
Table 3-12. Repairing the Printer Mechanism
Symptom
Cause
Checkpoint
Solution
▼
Problem:
The CR motor fails to operate.
The CR motor fails to
drive the timing belt
after power on.
Foreign matter is
lodged in the
mechanism.
Manually move the
timing belt to see if the
motor can rotate freely.
Remove the
foreign substance.
The CR motor is
defective.
Measure the motor coil
resistance. It should be
about 16 ohms. If the
coil is shorted, check CR
motor driver IC8 on the
main board.
Replace the CR
motor (and main
board, if
necessary).
▼
Problem:
The carriage dose not operate at power on (after carriage has been manually
centered prior to power on).
The CR motor rotates,
but the carriage dose
not move.
The belt drive or
driven pulley is
defective.
Check the pulleys which
are broken or worn.
Replace the
pulleys.
The timing belt is
defective.
Check if the timing belt
is correctly set to the
carriage.
Reset the belt to
the carriage.
Check if the timing belt
is broken.
Replace the belt.
The carriage moves to
the left slightly, then
stops.
The carriage
movement is not
smooth.
Check if the carriage
moves smoothly as you
move it manually.
Clean and
lubricate the CR
guide shaft or
frame. Otherwise,
replace the CR
motor.
The carriage moves to
the left or right end,
then stops.
The HP detector is
defective.
Check the HP detector
using a multi meter.
Replace the HP
detector.
▼
Problem:
Self test printing is not executed.
The carriage moves,
but dose not print.
The printhead FFC
common wires are
disconnected.
Check whether FFC is
properly connected to
the printhead or the
main board.
Connect the FFC
to the printhead or
the main board
correctly.
The printhead is
defective.
Measure the printhead
coil resistance. It should
be about 8 ohms. If the
printhead is shorted,
check the drivers on the
main board.
Replace the
printhead, (and
drivers , if
necessary).
Содержание FX 890 - B/W Dot-matrix Printer
Страница 1: ...6 59 0 18 3LQ PSDFW RW 3ULQWHU EPSON FX 1180 880 4008484 ...
Страница 9: ...PRODUCT SPECIFICATION 3 7 5 ...
Страница 23: ...OPERATING PRICIPLES 3 7 5 ...
Страница 30: ...TROUBLESHOOTING 3 7 5 ...
Страница 49: ...DISASSEMBLY AND ASSEMBLY C H A P T E R ...
Страница 72: ...ADJUSTMENT 3 7 5 ...
Страница 80: ...MAINTENANCE 3 7 5 ...
Страница 85: ...APPENDIX 3 7 5 ...
Страница 102: ......
Страница 103: ......
Страница 104: ......
Страница 105: ......
Страница 106: ......