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Problem
(6)
Broken MP feed clutch
The MP feed clutch
coil.
does not operate.
Poor contact in the MP
feed clutch connector ter-
minals.
Defective engine board
(KP-5061).
(7)
Broken registration clutch
The registration
coil.
clutch does not op-
Poor contact in the regis-
erate.
tration clutch connector
terminals.
Defective engine board
(KP-5061).
(8)
Poor contact in the eraser
The eraser lamp
lamp connector terminals.
does not turn on.
Defective eraser lamp.
Defective engine board
(KP-5061).
(9)
Poor contact in the expo-
The exposure lamp
sure lamp connector termi-
does not turn on.
nals.
Defective scanner board
(KP-5063).
Defective engine board
(KP-5061).
(10)
Defective scanner board
The exposure lamp
(KP-5063).
does not turn off.
Defective engine board
(KP-5061).
(11)
Broken wire in heater
The heater lamp
lamp.
does not turn on.
Thermal cutout triggered.
(12)
Broken heater lamp wire.
The heater lamp
Dirty sensor part of the
does not turn off.
thermistor.
Causes
Check for continuity across the coil. If none, replace the MP feed
clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC5-2 on the engine
board (KP-5061) goes low. If not, replace the engine board (KP-
5061).
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.
Run maintenance item U032 and check if YC6-2 on the engine
board (KP-5061) goes low. If not, replace the engine board (KP-
5061).
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-5061) is held low, replace the engine board (KP-5061).
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if the exposure lamp turns on with YC6-1 and YC6-2 on
the scanner board (KP-5063) goes low. If not, replace the scan-
ner board (KP-5063).
Check if the exposure lamp turns on with YC11-10 on the engine
board (KP-5061) goes low. If not, replace the engine board (KP-
5061).
Check if the exposure lamp turns on with YC6-1 and YC6-2 on
the scanner board (KP-5063) goes low. If not, replace the scan-
ner board (KP-5063).
Check if the exposure lamp turns on with YC11-10 on the engine
board (KP-5061) goes low. If not, replace the engine board (KP-
5061).
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.
Check procedures/corrective measures
2DC
1-5-21
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