C8401 (C4751i)

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ByEric Ditges
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Contents

Trouble typeC8401: Data flash failure
RankC
Trouble detection conditionData flash does not access normally.
Trouble isolationDF
Relevant electrical partsDF control board (DFCB)

Procedure

  1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
  2. Check the connectors on DFCB for proper connection and correct as necessary.
  3. Rewrite the firmware.
  4. Replace DFCB.

(Link to the Field Service Manual)