CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
4.3.2 The scanning lamp fails to go ON.
1. Wiring, Connector
Is the connection of the wiring and the connectors between the inverter PCB
(J4061) and the lamp correct?
NO:
2. Inverter PCB
Is 'E220' indicated?
YES: Replace the inverter PCB.
3. Scanning lamp, Reader controller PCB
Execute the following in service mode: COPIER>FUNCTION>MISC-
R>SCANLAMP. Is the activation control signal present at J402 of the
reader controller PCB? (J402-2: LMP_ON, J402-3: GND, J402-4: +24 VU)
YES: The scanning lamp is faulty. Replace the lamp.
NO:
4-36
Correct the wring, and connect the connectors securely.
The reader controller PCB is faulty. Replace the PCB.