Xerox Phaser 790, Service Manual

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2-7 Phaser 790/DocuColor 2006
001-702
Status Indicator RAPs Initial Issue
001-702 +5 VDC Power RAP
Initial Actions
• Ensure AC Power is available at the wall receptacle.
• Ensure the Power Cord is good. Replace the Power Cord if it is defective (PL 11.1).
Procedure
Switch off the power. Remove the Rear Cover. Switch on the power. +5 VDC is measured
between J33-1 and J33-4.
Y
N
Switch off the power. Disconnect J32 and J33 from the Low Voltage Power Supply. Switch
on the power. +5 VDC is measured between P33-1 and P33-4 on the Low Voltage
Power Supply.
Y
N
Replace the Low Voltage Power Supply (PL 11.1).
Switch off the power. Reconnect J32 to the Low Voltage Power Supply. Switch on the
power. +5 VDC is measured between P33-1 and P33-4 on the Low Voltage Power
Supply.
Y
N
Go to Flag 2. Refer to the +5 VDC Wirenet to troubleshoot a short circuit in the wires
from P32.
Go to Flag 1. Refer to the +5 VDC Wirenet to troubleshoot a short circuit in the wires from
P33.
The Low Voltage Power Supply appears to be operating correctly.