Description: Potential sensor calibration error 2 During drum potential sensor calibration, the drum potential sensor output voltage does not meet specification when test voltages (–100V, –800V) are applied to the drum.
Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
Code: 312
Description: Potential sensor calibration error 3 During drum potential sensor calibration when adjusting the drum potential (VD), the drum potential sensor detects VD higher than VG (grid voltage). -or- When adjusting VD (drum surface potential of black areas after exposure), even after 5 adjustments of VG (charge corona grid potential), VD could not be set in the target range (–800+-10 +- VL + 130V)
Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective • Charge corona unit worn out, dirty
Code: 314
Description: Potential sensor calibration error 4 During drum potential sensor calibration when adjusting the drum potential (VH) for LD power adjustment, the first time the VH pattern is made, the drum potential sensor detects that VH is more than 500V: VH > –500 + VL + 130 V
Description: Potential sensor calibration error 5 During drum potential sensor calibration, when –100V is applied to the drum, the output value is out of the prescribed range.
Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
Code: 316
Description: Potential sensor calibration error 6 During drum potential sensor calibration, when –800V is applied to the drum, the output value is out of the prescribed range.
Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
Code: 317
Description: Potential sensor calibration error 7 During drum potential sensor calibration, when VL is adjusted, the pattern surface potential VL pattern is not within range 0V –400V. (VL is the potential after exposing a white pattern.)
Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Charge corona power pack defective • Development power pack defective