Table 5-10. The LED Does Not Come On (4)
Cause Step Checkpoint Finding Solution
The consumables may not be
installed.
1
Are the consumables installed?
No
Install the
consumables.
The paper take-up roller may
be bad.
2
Does paper always jam in paper
take-up roller area?
Yes
Replace the paper
take-up roller.
The paper feed roller may be
bad.
3
Does paper always jam in the
paper feed roller area?
Yes
Replace the paper
feed roller.
The fusing unit may be bad.
4
Does paper always jam in the
fusing unit?
Yes
Replace it.
Table 5-11. Software Errors
Cause Step Checkpoint Finding Solution
The C169 MAIN-B Board
may be bad.
1
—
—
Replace it.
Table 5-12. Fusing Unit Error
Cause Step Checkpoint Finding Solution
The connector for the
thermistor may be
disconnected.
1
Is the connector for the
thermistor disconnected? Yes
Connect it.
The C169 MAIN-B Board may
be dead.
2
Does the heater lamp remain
lit up until the error occurs?
Yes
Replace the C169
MAIN-B Board.
The heater lamp or thermal
fuse in the fusing unit may be
bad.
3
Does the heater lamp come
on at power on?
No
Replace the heater
lamp or thermal fuse
in the fusing unit.
The PWB-E board may be
dead.
4
—
—
Replace the PWB-E
board.
Table 5-13. The Fan Motor Error
Cause Step Checkpoint Finding Solution
Connector CN211 on the
C169 MAIN-B Board may be
disconnected.
1
Is connector CN211 on the
C169 MAIN-B Board
disconnected?
Yes
Connect it.
The fan motor may be dead. 2 — — Replace it.
Table 5-14. The Scanner Motor Error
Troubleshooting EPL-5500 Service Manual
5-12 Rev. B
