Samsung CLP-510/XBH Service Manual page 144

Invalid Image Transfer
*This may be caused by a wrong value of OEM Resistor in the OPC Unit.
1. Open the Top Cover and then check that it is correctly locked in position.
--> Remove, replace and re-lock the ITB unit.
2. Replace the ITB Unit.
3. If the fault continues after re-fitting the ITB unit several times check the voltage on Pin4 of CN10 on the Main PBA.
--> Replace the ITB Harness if the voltage is not correct.
4. Replace the Main PBA.
Invalid Toner [Color]
1. Clean the 3 contact points on the Toner Cartridge and then re-install.
2. Replace the Toner Cartridge if the same error recurs.
3. Remove the Front Cover and then check the condition of the contacts between the OEM PBA and Terminal if the
same error occurs.
--> Clean or Re-assemble.
4. Replace the OEM PBA, HVPS and Main PBA in order if the same error recurs.
Invalid NEW Toner [Color]
1. Clean the 3 contact points on the Toner Cartridge and then re-install.
2. Replace the Toner Cartridge if the same error recurs.
3. Replace the OEM PBA, HVPS and Main PBA in order if the same error recurs.
Jam 0 In [Tray]
1. Open the Duplex Cover and then remove the paper stuck in the machine.
2. Open the Cassette and after removing any trapped paper ensure that the cassette is properly loaded, not overfilled
and that paper guides are properly adjusted.
3. Check that the location of Lever of the Feed Sensor is normal.
4. Check that the operation of the Pick-Up Clutch under the Cassette is normal.
5. If the Clutch does not work check the condition of the cable harness to the Main PBA.
6. Replace the Main PBA if the voltage on Pin 2 of CN32, CN25 on the Main PBA is +24VDC.
(Normal Output : Pin 1 = +24VDC, Pin 2 = 0V)
Samsung Electronics
Can not communicate with ITB Unit.
This is caused by a wrong value of OEM Resistor in the Toner
Cartridge.
This occurs when the Fusible Resistor in the Toner Cartridge does not
become open circuit within regulation time.
Paper is caught in the tray.
Troubleshooting
Service Manual
8-21