CC151 (C4751i)

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ByEric Ditges
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Contents

Trouble typeCC151: ROM contents error upon startup (MSC)
RankC
Trouble detection conditionA fault is detected in a sequence of ROM contents check of the CPU board (CPUB) during starting.
Trouble isolation–
Relevant electrical partsBackup board (ERB)CPU board (CPUB)Base board (BASEB)

Procedure

  1. Check the ROM version.
  2. Rewrite the firmware.
  3. Check the connector between ERB CN1-BASEB CN20E for proper connection and correct as necessary.
  4. Check CPUB for proper installation and correct as necessary.
  5. Replace ERB.
  6. 1. Replace the current ERB with a new one.
  7. 2. Replace the following components with new ones.
  8. When the transfer belt unit, transfer roller and the fusing unit have been replaced with new ones, perform [Service Mode] -> [Counter] -> [Life] -> [New Release].
    • Imaging unit
    • Transfer belt unit
    • Fusing unit
    • Transfer roller
    • Feed roller, pick-up roller, separation roller (including options)
    • Separation pad
    • Toner filter
  9. 3. Turn ON the main power switch and check to see that warm-up is started.
  10. Make sure that trouble codes other than C2650 or improper IU/TC placement is not detected.
  11. 4. Make the specified readjustments.
  12. Replace CPUB.
  13. Replace BASEB.

(Link to the Field Service Manual)