Samsung CLP-500 Service Manual page 76

Chapter 8. Troubleshooting
Waste Motor Error
1. Open the Front Cover and then check if the Waste Toner Tank is full or the waste inlets are blocked with Waste Toner.
--> Replace the Waste Toner Tank and unblock waste inlet feeds.
2. Open the Top Cover and then remove the ITB Unit and OPC Unit and check if the OPC waste toner outlet is blocked.
3. Remove the Front Cover and then check the Waste Motor Harness.
--> Refit or replace the harness if it is damaged.
4. Remove the HVPS Cover and then check that the HVPS OEM Harness is correctly fitted.
--> Refit or replace the harness if it is damaged.
5. Measure the Voltage on CN2 Pin1 and Pin3 of OEM PBA. (Normal : Over +10VDC)
--> replace the OEM PBA if there is no output.
Image Transfer Error
1. Open Top Cover and then check that the ITB unit properly fitted and locked in position.
--> Remove, replace and re-lock the ITB unit.
--> If the same fault recurs regularly replace the ITB unit.
2. Check the condition of the ITB Harness (especially if replacing the ITB does not resolve the problem).
--> Refit or replace the harness if it is damaged.
3. Check the signal on Pin 1 of CN10 on the Main PBA.
--> Replace the Main PBA if the signal is Active low(almost 0V).
Invalid Drum Cartridge
*This is caused by a wrong value of OEM Resistor in the OPC Unit.
*It is also caused by misreading the value of the OEM Resistor because of contamination of the contact points.
1. Check that an original Samsung Drum Cartridge is fitted.
--> If not replace the OPC drum.
2. Clean the OPC unit contact points.
3. Check the Harness connected between the Main PBA and OPC Unit.
--> Refit or replace the harness if it is damaged.
4. Check D11 on the Engine Controller.
--> Replace the Main PBA.
Traninung Manual
8-20
This error is caused by open circuit of Waste Motor Harness or the
motor stalling due to increased Waste Motor torque during operation.
This is caused by a badly fitted or unlocked ITB unit or a faulty ITB
Home Sensor.
Can not communicate with the OPC Unit.
Samsung Electronics