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P-9 (bizhub 4700i)

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Malfunction typeImaging unit (K) failure
Malfunction codeP-9
Malfunction detection timingAll 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

  1. Check the setting value in [Max Image Density Adj] of [Service Mode] -> [Imaging Process Adjustment] and, if it is negative, readjust.
  2. Check the drive transmission portion of the imaging unit and correct as necessary.
  3. Clean IDCS1 window if dirty.
  4. Clean the contact of the imaging unit connector if dirty.
  5. Check the connector between HVPS CN1-BASEB CN4E for proper connection.
  6. Replace the imaging unit. (Part# AAJV01E)
  7. Replace the transfer belt unit. (Part# ACT9R70300)
  8. Replace HVPS. (Part# ACT9M40300)
  9. Replace BASEB. (Part# ACTAH02014)

(Link to the Field Service Manual)

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