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P-36 (bizhub 650i/550i/450i)

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Malfunction typeMedia sensor failure 2 (When IM-102 is installed)
Malfunction codeP-36
Malfunction detection timing-When 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 parts-Envelope 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# AC74H00501)
  8. Replace CPUB.
    650i/550i (Part# AC74H02P03)
    450i (Part# AC76H02P02)
  9. Replace BASEB. (Part# AC74H02101)

(Link to the Field Service Manual)

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