OKIDATA OF1000, Руководство по обслуживанию

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Page: 141
Service Guide OF1000
Chapter 4 Failure & Repair Analysis
RAP 10: LED Test Failure
START
Do one or more LEDs light?
YES Replace the OPE-150 board.
NO Is + 5 vdc present at CN1, pin 6 of the OPE-150 board?
YES Check the cable between CN1 of the OPE-150 and CN9 of the MCNT-150 for
damage. Replace the cable if damaged.
NO Is + 5 vdc present at CN7, pin 8 of the MCNT-150 board?
YES Replace the OPE-150 board.
NO Replace the PWU-150 board.
Is the problem resolved?
YES End of procedure.
NO Replace the MCNT-150.
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