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P-36 (bizhub C650i/C550i/C450i)

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Malfunction typeMedia sensor failure 2
Malfunction codeP-36
Malfunction detection timingWhen starting the machine, or the lower front door or the right door is opened and closed, ultrasonic waves sensor error is detected.Measure the received voltages when CLK is output and when CLK is not output, and the values are determined to be faulty.
Relevant partsEnvelope detection board/TX (ENVDB/TX)Envelope detection board/RX (ENVDB/RX)Envelope detection relay board (ENVDRB)Expansion control board (EXCB)CPU board (CPUB)Base board (BASEB)

Procedure

  1. Open the right door and check if there is any foreign matter such as paper.
  2. Check the connector between ENVDB/RX CN491-relay CN602-relay CN9-EXCB CN13EX for proper connection and correct as necessary.
  3. Check the connector between ENVDB/TX CN490-ENVDRB CN1 for proper connection and correct as necessary.
  4. Check the connector between ENVDRB CN2-relay CN253-relay CN254-EXCB CN6EX for proper connection and correct as necessary.
  5. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
  6. Check CPUB for proper installation and correct as necessary.
  7. Replace EXCB. (Part# AA2JH00500)
  8. Replace CPUB. (C650i Part# AA7NH02P03 / C550i Part# AA7PH02P01 / C450i Part# AA7RH02P02)
  9. Replace BASEB. (Part# AA2JH02005)

L.2.16 (Link to the Field Service Manual)

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