The Registration Clutch Does Not Operate; The Switchback Solenoid Does Not Operate; The Eraser Lamp Does Not Turn On; The Heater Lamp Does Not Turn On - Kyocera FS-1020D Service Manual

Problem
(6) Broken registration clutch
The registration coil.
clutch does not op-
Poor contact in the regis-
erate.
tration clutch connector
terminals.
Defective engine board
(KP-1046).
(7) Broken switchback sole-
The switchback so- noid coil.
lenoid does not op-
Poor contact in the
erate.
switchback solenoid con-
nector terminals.
Defective engine board
(KP-1046).
(8) Poor contact in the eraser
The eraser lamp lamp connector terminals.
does not turn on.
Defective eraser lamp.
Defective engine board
(KP-1046).
(9) Broken wire in heater
The heater lamp lamp.
does not turn on.
Thermal cutout triggered.
(10) Broken heater lamp wire.
The heater lamp
Dirty sensor part of the
does not turn off.
thermistor.
(11) Broken main charger wire.
Main charging is not
Leaking main charger
performed.
housing.
Poor contact in the high
voltage board connector
terminals.
Defective engine board
(KP-1046).
Defective high voltage
board.
(12) Poor contact in the high
Transfer charging is voltage board connector
not performed. terminals.
Defective engine board
(KP-1046).
Defective high voltage
board.
Causes
Check for continuity across the coil. If none, replace the registra-
tion clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine board (KP-1046).
Check for continuity across the coil. If none, replace the
switchback solenoid.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine board (KP-1046).
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 eraser lamp.
If the eraser lamp turns on when YC14-2 on the engine board
(KP-1046) is held low, replace the engine board (KP-1046).
Check for continuity across heater lamp. If none, replace the
heater lamp.
Check for continuity across thermal cutout. If none, remove the
cause and replace the thermal cutout.
Measure the resistance. If it is ∞Ω, replace the thermistor.
Check visually and clean the thermistor sensor parts.
See page 1-5-14.
See page 1-5-14.
Check procedures/corrective measures
2FM
1-5-19