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P-38 (bizhub 650i/550i/450i)

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Malfunction typeFeeding paper size sensor failure (bizhub 650i/550i)
Malfunction codeP-38
Malfunction detection timingAt the sensor check when starting the machine or starting the print, feeding paper size sensor/1 (PS50) or feeding paper size sensor/2 (PS51) is ON.
Relevant parts-Feeding paper size sensor/1 (PS50)
-Feeding paper size sensor/2 (PS51)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Select [Service Mode] -> [State Confirmation] -> [Sensor Check] and check the sensor operation.
  2. Check the connector between PS50-relay CN171-BASEB CN40E for proper connection and correct as necessary.
  3. Check the connector between PS51-relay CN171-BASEB CN40E for proper connection and correct as necessary.
  4. Check CPUB for proper installation and correct as necessary.
  5. Replace CPUB.
    650i/550i (Part# AC74H02P03)
    450i (Part# AC76H02P02)
  6. Replace BASEB. (Part# AC74H02101)

(Link to the Field Service Manual)

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