7-38
Troubleshooting ＞ Self-diagnostic function
[CONFIDENTIAL]
2630 PF drive motor 4 error
(paper feeder 4)
When the PF drive motor is driven,
error signal is detected continuously
for 2 s.
Defective connector
cable or poor contact in
the connector.
Reinsert the connector. Also check for continuity within
the connector cable. If none, replace the cable.
PF drive motor 4 and PF main PWB (YC6)
Defective drive
transmission system of
the PF drive motor.
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears
and replace if any.
Defective PF drive
motor.
Replace the PF drive motor 4.
Defective PF main
PWB.
Replace the PF main PWB.
4000 Polygon motor synchronization error
The polygon motor is not stabilized
within 20 s after driving starts.
Defective connector
cable or poor contact in
the connector.
Reinsert the connector. Also check for continuity within
the connector cable. If none, replace the cable.
Polygon motor and engine PWB (YC15)
Defective polygon
motor.
Replace the laser scanner unit (see page 4-23).
Defective engine PWB. Replace the engine PWB and check for correct
operation.
4101 BD steady-state error
When the value of Register BDSET is
1 after setting Register BDSET as
one and passing by BD1 cycle.
Defective connector
cable or poor contact in
the connector.
Reinsert the connector. Also check for continuity within
the connector cable. If none, replace the cable.
APC PWB(YC1) and engine PWB (YC16)
APC PWB(YC2) and PD PWB(YC1)
Defective PD PWB. Replace the laser scanner unit.
Defective engine PWB. Replace the engine PWB and check for correct
operation.
5100 Chager current error
When the current value measured at
the time of potential adjustment is
less than 20 μA.
Defective connector
cable or poor contact in
the connector.
Reinsert the connector. Also check for continuity within
the connector cable. If none, replace the cable.
Chager unit and high voltage PWB
High voltage PWB (YC101) and engine PWB (YC19)
Defective high voltage
PWB.
Replace the high voltage PWB and check for correct
operation.
Defective engine PWB. Replace the engine PWB and check for correct
operation.
6000 Broken fuser heater wire
The detection temperature of fuser
thermistor 2 is 100 °C/212°F or less
after the fuser heater lamp has been
turned on continuously for 30 s.
Defective connector
cable or poor contact in
the connector.
Reinsert the connector. Also check for continuity within
the connector cable. If none, replace the cable.
Fuser heater and power source PWB (YC2)
Fuser thermistor and Fuser thermistor connect
PWB(YC1 and YC2)
Fuser thermistor connect PWB(YC3) and engine PWB
(YC21)
Deformed connector
pin.
See page 7-39
.
Defective triac. See page 7-39
.
Fuser thermostat
triggered.
Reinsert the fuser unit.
Broken fuser heater
wire.
Defective engine PWB. Replace the engine PWB and check for correct
operation.
Code Contents Causes Check procedures/
corrective measures
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