Description: FGATE OFF error The FGATE signal does not assert within the prescribed time. (The BCU generates the FGATE signal and sends it to the LD unit when the registration sensor switches on.)
Description: LD error The IPU detected a problem at the LD unit.
Causes: • Worn-out LD • Disconnected or broken harness of the LD.
Code: 302
Description: Charge roller bias leak The charge roller bias leak signal is detected.
Causes: • Charge roller damaged • High voltage supply board defective • PCDU harness defective or disconnected
Code: 304
Description: Charge roller bias correction leak The charge roller bias correction is performed twice even if the maximum charge roller bias (-2000V) is applied to the roller.
Description: Development roller bias leak A development roller bias leak is detected for 60 ms after the high voltage has been supplied to the development unit.
Causes: • Development bias leak • Broken harness • Defective high voltage power supply, voltage supply • Defective high voltage supply unit
Code: 324
Description: Development paddle motor error The machine detects a lock signal error from the development puddle motor for 2 seconds after the drum motor has turned on.
Causes: • Overload on the development puddle motor • Defective development puddle motor • Defective harness • Defective IOB