CD261 (C4751i)

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ByEric Ditges
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Contents

Trouble typeCD261: USB hub board failure
RankC
Trouble detection conditionWhen a failure is detected in USB hub board included in the local interface kit.Non-standard USB device is connected.
Trouble isolation–
Relevant electrical partsCPU board (CPUB)Base board (BASEB)USB hub board (USBHB: EK-P08 or EK-P09)

Procedure

  1. Check the operation with another USB device.
  2. Check USBHB for proper connection and correct as necessary.
  3. Replace USBHB.
  4. Replace CPUB.
  5. Replace BASEB.

(Link to the Field Service Manual)