Can Not Sense When The Cover Is Opened; Defective Motor; No Power - Samsung CLP-600 Series Service Manual

7.4.7. Can not sense when the Cover is Opened.

Symptoms
LCD Indicates "Ready" even when cover is opened.
Check and Cause
1. Check if the Hook Lever inside the Duplex Cover is
broken or distorted.
2. Check the Cover Open sensor, connectors and cable
harness. Ensure that a signal reaches the main PBA
3. Use the EDC mode to test the actuator.

7.4.8 Defective Motor

Symptoms
Main Motor does not work and paper does not feed when printing. Jam 0 is displayed.
Check and Cause
1. Check if the Motor Harness or Motor PCB is broken
or not.
2. Test the Motor using EDC Mode.

7.4.9 No Power

Symptoms
Power is not supplied to the set, or the LCD display is not on.
Check and Cause
1. Check the power supply input and DC voltage output
from the SMPS. Check the fuses in the SMPS.
Check the wall socket.
2. If the SMPS supply is OK, and the LCD still does not
work check the display connectors and cable harness
3. Check if +24VDC or other Power Supplies are shorted
out.
Samsung Electronics
Solution
1. Replace the Duplex Cover.
2. Replace the harness or microswitch as necessary.
3. Replace the Sensor Board.
Solution
1. Replace the Motor or Motor Harness.
2. Replace the Main PBA.
Solution
1. Replace the Power Cable. Replace SMPS fuses. If
the fault recurs replace the SMPS.
2. Replace cables or LCD Panel Ass'y. Replace the
Main PBA.
3. Replace the components used for +24VDC.
Troubleshooting
Service Manual
7-15