Xerox WorkCentre 5020 - Tray 2 and Bypass Tray Paper Loading; Loading Paper in Tray 2

July, 2007
2-31
WorkCentre 5020
U7-0, U7-1
Status Indicator RAPS
Initial Issue
U7-0 UI Communication TimeOut
BSD-Reference: CH2.1 (Figure 1)
Explanation
At Power ON, the AIOC PWB does not communicate with the User Interface PWB.
Procedure
Measure each voltage between AIOC PWB J401-1 ( P/J401) (+), J401-2 (+), and GND (-).
The voltages are approximately +5VDC.
YN
Replace the AIOC PWB (PL 8.1) (REP 8.1.1).
Check the wire between J401 ( P/J401) and J710 ( P/J710). The wire is neither shorted nor
open.
YN
Repair the wire.
Replace the User Interface PWB (PL 8.4) (REP 8.4.1) and the AIOC PWB (PL 8.1) (REP 8.1.1)
in that order.
U7-1 UI Communication Error
BSD-Reference: CH2.1 (Figure 1)
Explanation
The User Interface PWB detected a communication failure.
Procedure
Check each User Inferface PWB connector. Each connector is connected securely.
YN
Connect each connector securely.
Turn the power OFF and ON. U7-1 recurs.
YN
Completed
Replace the User Interface PWB (PL 8.4) (REP 8.4.1).