Cover Open Not Detected; Defective Motor; No Power - Xerox Phaser 6100 Service Manual

8.4.7 Cover Open Not Detected

Symptoms: "Ready" is displayed on the control panel when a cover is open.
Checks and Causes
Check the switch actuators on the inside of the
duplex (Door C) and developer (Door A) covers to
see if they are broken or damaged.
Check the cover open switch, connectors and cable
harness.
CN30 (main board) to CN4 (LVPS)
CN14 (main board to Switch 3 (left cover)
CN 3 (LVPS) to Switch 1 (right cover) to
Switch 2 (left cover)
Test the cover open actuator and switch in EDC
mode.

8.4.8 Defective Motor

Symptoms: "Jam at Tray1/MPT/Tray2" is displayed on the control panel, the main motor does not work
and paper does not feed when printing.
Checks and Causes
Check if the motor harness, CN27 or motor board is
damaged.
Test the motor using EDC mode.

8.4.9 No Power

Symptoms: Power is not supplied to the printer or the control panel LED display is not on.
Checks and Causes
Check the AC power input and DC voltage output
from the LVPS.
CN30 (main board) to the following Pins:
9~10 = 24VDC, 13~16 = 3.3VDC, 21~22 = 5VDC
Check the fuses in the LVPS
Check the wall socket output.
If the LVPS supply is working properly, and the
display still does not work, check the display
connectors and cable harness.
Check if +24VDC or DC outputs are shorted to
ground.
Repair Actions
Replace the duplex cover (Door C) or developer cover (Door
A).
Replace the harness or switch as necessary.
Replace any defective parts.
If the error recurs, replace the main board.
Repair Actions
Replace the motor or motor harness.
Replace the main motor if defective.
If the error recurs, replace the main board.
Repair Actions
Replace the power cord.
Replace any damaged or open fuses on the LVPS (F1~F3).
If the fault recurs, replace the LVPS.
Replace the cables or control panel assembly.
Replace the main board.
Isolate and replace the component that is shorting out the
power supply.
Troubleshooting
Service Manual 8-15