Utax P-4532DN - 7 - 5 Electric problems

7-46
Troubleshooting ＞ Electric problems
[CONFIDENTIAL]
7 - 5 Electric problems
If the part causing the problem was not supplied, use the unit including the part for replacement.
Troubleshooting to each failure must be in the order of the numbered symptoms.
Problem Causes Check procedures/corrective measures
1 The machine does
not operate when
the power switch
is turned on.
No electricity at the power
outlet.
Measure the input voltage.
The power cord is not plugged
in properly.
Check the contact between the power plug and the outlet.
Broken power cord. Check for continuity. If none, replace the cord.
Defective power switch. Check for continuity across the contacts. If none, replace the power
switch.
Defective interlock switch. Check for continuity across the contacts of interlock switch. If none,
replace the power source PWB.
Defective power source PWB. Replace the power source PWB or engine PWB.
2 Eject motor does
not operate.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Eject motor and relay-L PWB (YC12)
Relay-L PWB and engine PWB (YC2/YC31)
Defective drive transmission
system.
Check if the rollers and gears rotate smoothly. If not, grease the bushes
and gears. Check for broken gears and replace if any.
Defective motor. Replace the eject motor.
Defective PWB. Replace the engine PWB or the relay-L PWB and check for correct
operation.
3 Power source fan
motor does not
operate.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Power source fan motor and engine PWB (YC10)
Defective motor. Replace the power source fan motor.
Defective PWB. Replace the engine PWB and check for correct operation.
4 LSU fan motor
does not operate.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
LSU fan motor and relay-L PWB (YC4)
Relay-L PWB and engine PWB (YC2/YC31)
Defective motor. Replace the LSU fan motor.
Defective PWB. Replace the engine PWB or the relay-L PWB and check for correct
operation.
5 Developer fan
motor does not
operate.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Developer fan motor and engine PWB (YC27)
Defective motor. Replace the developer fan motor.
Defective PWB. Replace the engine PWB and check for correct operation.
6 Paper feed clutch
does not operate.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Paper feed clutch and engine PWB (YC5)
Defective clutch. Replace the paper feed clutch.
Defective PWB. Replace the engine PWB and check for correct operation.
7 Registration clutch
does not operate.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Registration clutch and engine PWB (YC5)
Defective clutch. Replace the registration clutch.
Defective PWB. Replace the engine PWB and check for correct operation.