SERVICE MANUAL - O. Rensch OHG
SERVICE MANUAL - O. Rensch OHG
SERVICE MANUAL - O. Rensch OHG
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Problem Causes Check procedures/corrective measures<br />
(6)<br />
The MP feed clutch<br />
does not operate.<br />
Broken MP feed clutch<br />
coil.<br />
Poor contact in the MP<br />
feed clutch connector terminals.<br />
2DC<br />
Check for continuity across the coil. If none, replace the MP feed<br />
clutch.<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
(7)<br />
The registration<br />
clutch does not operate.<br />
(8)<br />
The eraser lamp<br />
does not turn on.<br />
(9)<br />
The exposure lamp<br />
does not turn on.<br />
(10)<br />
The exposure lamp<br />
does not turn off.<br />
(11)<br />
The heater lamp<br />
does not turn on.<br />
(12)<br />
The heater lamp<br />
does not turn off.<br />
Defective engine board<br />
(KP-5061).<br />
Broken registration clutch<br />
coil.<br />
Poor contact in the registration<br />
clutch connector<br />
terminals.<br />
Defective engine board<br />
(KP-5061).<br />
Poor contact in the eraser<br />
lamp connector terminals.<br />
Defective eraser lamp.<br />
Defective engine board<br />
(KP-5061).<br />
Poor contact in the exposure<br />
lamp connector terminals.<br />
Defective scanner board<br />
(KP-5063).<br />
Defective engine board<br />
(KP-5061).<br />
Defective scanner board<br />
(KP-5063).<br />
Defective engine board<br />
(KP-5061).<br />
Broken wire in heater<br />
lamp.<br />
Thermal cutout triggered.<br />
Broken heater lamp wire.<br />
Dirty sensor part of the<br />
thermistor.<br />
Run maintenance item U032 and check if YC5-2 on the engine<br />
board (KP-5061) goes low. If not, replace the engine board (KP-<br />
5061).<br />
Check for continuity across the coil. If none, replace the registration<br />
clutch.<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
Run maintenance item U032 and check if YC6-2 on the engine<br />
board (KP-5061) goes low. If not, replace the engine board (KP-<br />
5061).<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
Check for continuity. If none, replace the eraser lamp.<br />
If the eraser lamp turns on when YC14-2 on the engine board<br />
(KP-5061) is held low, replace the engine board (KP-5061).<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
Check if the exposure lamp turns on with YC6-1 and YC6-2 on<br />
the scanner board (KP-5063) goes low. If not, replace the scanner<br />
board (KP-5063).<br />
Check if the exposure lamp turns on with YC11-10 on the engine<br />
board (KP-5061) goes low. If not, replace the engine board (KP-<br />
5061).<br />
Check if the exposure lamp turns on with YC6-1 and YC6-2 on<br />
the scanner board (KP-5063) goes low. If not, replace the scanner<br />
board (KP-5063).<br />
Check if the exposure lamp turns on with YC11-10 on the engine<br />
board (KP-5061) goes low. If not, replace the engine board (KP-<br />
5061).<br />
Check for continuity across heater lamp. If none, replace the<br />
heater lamp.<br />
Check for continuity across thermal cutout. If none, remove the<br />
cause and replace the thermal cutout.<br />
Measure the resistance. If it is ∞Ω, replace the thermistor.<br />
Check visually and clean the thermistor sensor parts.<br />
1-5-21
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