SERVICE MANUAL - O. Rensch OHG
SERVICE MANUAL - O. Rensch OHG
SERVICE MANUAL - O. Rensch OHG
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2DC<br />
1-5-4 Electrical problems<br />
Problem Causes Check procedures/corrective measures<br />
(1)<br />
The machine does<br />
not operate when<br />
the main switch is<br />
turned on.<br />
No electricity at the power<br />
outlet.<br />
The power cord is not<br />
plugged in properly.<br />
The front cover is not<br />
closed completely.<br />
Measure the input voltage.<br />
Check the contact between the power plug and the outlet.<br />
Check the front cover.<br />
(2)<br />
The main motor<br />
does not operate<br />
(C2000).<br />
(3)<br />
The scanner motor<br />
does not operate.<br />
(4)<br />
Cooling fan does<br />
not operate.<br />
(5)<br />
The feed clutch<br />
does not operate.<br />
Broken power cord.<br />
Defective main switch.<br />
Blown fuse in the power<br />
supply board (KP-5059).<br />
Defective interlock switch.<br />
Defective power supply<br />
board (KP-5059).<br />
Poor contact in the main<br />
motor connector terminals.<br />
Broken main motor gear.<br />
Defective main motor.<br />
Defective engine board<br />
(KP-5061).<br />
Broken scanner motor coil.<br />
Poor contact in the scanner<br />
motor connector terminals.<br />
Broken Cooling fan coil.<br />
Poor contact in the Cooling<br />
fan connector terminals.<br />
Broken feed clutch coil.<br />
Poor contact in the feed<br />
clutch connector terminals.<br />
Defective engine board<br />
(KP-5061).<br />
Check for continuity. If none, replace the cord.<br />
Check for continuity across the contacts. If none, replace the<br />
main switch.<br />
Check for continuity. If none, remove the cause of blowing and<br />
replace the fuse.<br />
Check for continuity across the contacts of switch. If none, replace<br />
the switch.<br />
With AC present, check for 24 V DC at CN2-6 and 5 V DC at<br />
CN2-1 on the power supply board (KP-5059). If none, replace<br />
the power supply board (KP-5059).<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
Check visually and replace the main motor if necessary.<br />
Run maintenance item U030 and check if the main motor operates<br />
and replace the main motor if necessary.<br />
Run maintenance item U030 and check if YC4-9 on the engine<br />
board (KP-5061) go low. If not, replace the engine board (KP-<br />
5061).<br />
Check for continuity across the coil. If none, replace the scanner<br />
motor.<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
Check for continuity across the coil. If none, replace Cooling fan.<br />
Reinsert the connector. Also check for continuity within the connector<br />
cable. If none, remedy or replace the cable.<br />
Check for continuity across the coil. If none, replace the feed<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 YC4-1 on the engine<br />
board (KP-5061) goes low. If not, replace the engine board (KP-<br />
5061).<br />
1-5-20
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