2BT
1-5-20
Problem
Causes
Check procedures/corrective measures
(7)
The paper feed
clutch does not
operate.
(8)
The bypass paper
feed clutch does not
operate.
(9)
The cleaning lamp
does not turn on.
(10)
The exposure lamp
does not turn on.
(11)
The exposure lamp
does not turn off.
(12)
The fixing heater
does not turn on
(C610).
(13)
The fixing heater
does not turn off.
(14)
Main charging is not
performed (C510).
Broken paper feed clutch
coil.
Poor contact in thepaper
feed clutch connector
terminals.
Broken bypass paper feed
clutch coil.
Poor contact in the bypass
paper feed clutch
connector terminals.
Poor contact in the
cleaning lamp connector
terminals.
Defective cleaning lamp.
Poor contact in the
exposure lamp connector
terminals.
Defective inverter PCB.
Defective inverter PCB.
Broken wire in fixing
heater.
Fixing unit thermostat
triggered.
Broken fixing unit
thermistor wire.
Dirty sensor part of the
fixing unit thermistor.
Broken main charger wire.
Leaking main charger
housing.
Poor contact in the high-
voltage transformer PCB
connector terminals.
Defective main PCB.
Defective high- voltage
transformer PCB .
Check for continuity across the coil. If none, replace the paper
feed clutch.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check for continuity across the coil. If none, replace the bypass
paper feed clutch.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check for continuity. If none, replace the cleaning lamp.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
If the exposure lamp does not turn on when CN12-1 and CN12-2
on the main PCB are held low, replace the inverter PCB.
If the exposure lamp does not turn off when CN12-1 and CN12-2
on the main PCB are held high, replace the inverter PCB.
Check for continuity across the heater. If none, replace the
heater.
Check for continuity across the thermostat. If none, remove the
cause and replace the thermostat.
Measure the resistance. If it is
∞ Ω
, replace the fixing unit
thermistor.
Check visually and clean the thermistor sensor parts.
See page 1-5-12.
