Rap 01: Power Lamp Does Not Light - OKIDATA Pacemark 3410 Service Manual

Page: 102
Service Guide PM3410
Chapter 4 Failure & Repair Analysis

RAP 01: Power Lamp Does Not Light

START
Is the AC cable connected to an AC outlet and the printer?
NO Connect the AC cable.
Is the problem resolved?
YES End of procedure.
NO Go to the next step listed below.
YES Is fuse F1 on the power supply unit open?
YES Replace fuse F1.
Does fuse open again?
YES Go to A.
NO Is the problem resolved?
YES End of procedure.
NO Contact Technical Support.
NO Are the + 5 vdc and + 38 vdc present on the main logic board? For + 5 vdc, check between Pin 24 of
Q5 and the power bar. For + 38 vdc, check both ends of Capacitor C4.
NO Are connectors CN3 and CN7 attached to the main logic board?
NO Attach the connectors.
Is the problem resolved?
YES End of procedure.
NO Go to the next step listed below.
YES Go to A.
YES Replace the main logic board.
Is the problem resolved?
YES End of procedure.
NO Go to A.
A
Replace the power supply unit or connection cable.
Is the problem resolved?
YES End of procedure.
NO Contact Technical Support.
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