Kyocera AD-63 Service Manual page 215

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2FD/2FF/2FG
Problem
(25)
Broken toner feed solenoid
The toner feed sole-
coil.
noid does not
Poor contact in the toner
operate.
feed solenoid connector
terminals.
Defective main PCB.
(26)
Poor contact in the clean-
The cleaning lamp
ing lamp connector termi-
does not turn on.
nals.
Defective cleaning lamp.
Defective main PCB.
(27)
Poor contact in the expo-
The exposure lamp
sure lamp connector termi-
does not turn on.
nals.
Defective inverter PCB.
Defective scanner drive
PCB.
Defective main PCB.
(28)
Defective inverter PCB.
The exposure lamp
does not turn off.
Defective scanner drive
PCB.
(29)
Broken wire in fixing
The fixing heater
heater M or S.
does not turn on
Fixing unit thermostat trig-
(C6000).
gered.
(30)
Broken fixing unit thermis-
The fixing heater
tor wire.
does not turn off.
Dirty sensor part of the
fixing unit thermistor.
(31)
Broken main charger wire.
Main charging is not
Leaking main charger
performed.
housing.
Poor contact in the high-
voltage transformer PCB
connector terminals.
Defective main PCB.
Defective high- voltage
transformer PCB.
1-5-50
Causes
Check for continuity across the coil. If none, replace the toner
feed solenoid.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U033 and check if YC9-B2 on the main
PCB goes low. If not, replace the main PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity. If none, replace the cleaning lamp.
If the cleaning lamp turns on when YC9-B7 on the main PCB is
held low, replace the main PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U061 and check if the exposure lamp
turns on with CN1-1 and CN1-2 on the inverter PCB go low. If
not, replace the inverter PCB.
Run maintenance item U061 and check if the exposure lamp
turns on with YC1-3 on the scanner drive PCB goes low. If not,
replace the scanner drive PCB.
Run maintenance item U061 and check if YC37-3 on the main
PCB goes low. If not, replace the main PCB.
If the exposure lamp does not turn off with CN1-1 and CN1-2 on
the inverter PCB high, replace the inverter PCB.
If YC1-3 on the scanner drive PCB are always low, replace the
scanner drive PCB.
Check for continuity across each heater. If none, replace the
heater M or S.
Check for continuity across thermostat. If none, remove the
cause and replace the thermostat.
Measure the resistance. If it is ∞ Ω, replace the fixing unit ther-
mistor.
Check visually and clean the thermistor sensor parts.
See page 1-5-39.
Check procedures/corrective measures

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