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P-9 (bizhub 4750i/4050i)
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Contents
Malfunction type | Imaging unit (K) failure |
Malfunction code | P-9 |
Malfunction detection timing | All density readings taken from the density pattern produced on the transfer belt are 1.0 g/m2 (IDC sensor photo receiver output) or less during max. density adjustment (Vg/Vdc adjustment). |
Relevant parts | -Imaging unit/K -Transfer belt unit -IDC sensor (IDCS1) -Base board (BASEB) -High voltage unit (HVPS) |
Procedure
- Check the setting value in [Max Image Density Adj] of [Service Mode] -> [Imaging Process Adjustment] and, if it is negative, readjust.
- Check the drive transmission portion of the imaging unit and correct as necessary.
- Clean IDCS1 window if dirty.
- Clean the contact of the imaging unit connector if dirty.
- Check the connector between HVPS CN1-BASEB CN4E for proper connection.
- Replace the imaging unit. (Part# AAJV01D)
- Replace the transfer belt unit. (Part# ACT9R70300)
- Replace HVPS. (Part# ACT9M40300)
- Replace BASEB.
4750i (Part# ACT9H02013)
4050i (Part# ACT9H02002)