Sc400: Image Development 2 - Ricoh MP 7503SP Field Service Manual

SC400: Image Development 2

SC400
SC410-00 C
SC411-01 C Charge potential: VD (1) adjustment error
The is SC code is logged by the machine if it detects either event below:
The machine stops and the SC is logged without displaying the SC number.
Also, when SP3901 (Automatic Process Control On/Off) is set to "On", the
problem is detected only when control is enabled for the potential sensor.
Quenching lamp error
At the completion of auto process control initialization, the potential of the
drum surface detected by the potential sensor was more than -400V, the
prescribed value.
• Quenching lamp, connector loose, broken, defective
• Quenching lamp defective
• Remove the drum unit and inspect the quenching lamp harness and
connector
• Replace quenching lamp
• Adjustment of VD (1) = VD default +/-20 V failed within the 5 prescribed
attempts.
• Adjustment of the drum surface potential for VD (1), achieved a result of
VD (1) for VG (1) with VD (1) > than VG (1).
• Potential sensor harness, connector loose, broken, defective
• Drum unit harness, connector loose, broken, defective
• Drum unit installed incorrectly
• Charge corona power pack harness loose, broken, defective
• Charge corona grid damaged, dirty
• Potential sensor defective
• Charge corona power pack defective
• Drum quenching lamp defective
• IOB defective
SC400: Image Development 2
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