Foreign Interface Rap - Xerox Phaser 790 Service Manual

003-333 Foreign Interface RAP

This Fault Code indicates that a communications failure was detected between the ESS PWB
and the Foreign Interface.
Procedure
Switch the IOT power off, then on. Fault Code 003-333 is still present.
Y N
If intermittent performance is suspected, perform the following:
• Check the connections between the ESS PWB and the Foreign Interface and the
interconnecting harness.
• Reseat the P/J 17 connector on the ESS PWB and P/J 905 on the Foreign Interface.
Go to Flag 1 and check the wires for an open or short circuit. The wires are good.
Y N
Repair the wires.
There is +5 VDC between J905-8 and machine frame.
Y N
There is +5 VDC between J 17-7 and machine frame.
Y N
Replace the ESS PWB (PL 12.1).
Go to Flag 2 and check the wire for an open circuit.
Go to Flag 3 and check the wires for an open or short circuit. The wires are good.
Y N
Repair the wires.
Replace the ESS PWB (PL 12.1). If the problem continues, replace the Foreign Interface.
Initial Issue
Phaser 790/DocuColor 2006
10/00
2-39
Status Indicator RAPs
003-333