Xerox DocuColor 12/DCCS50, Service Manual

Page: 50 / 1617

1/05
2-14
DocuColor 12/DCCS50
Dark Screen RAP,
Reissue
Status Indicator RAPs
Dark Screen RAP
This RAP is used to analyze and repair a Dark Screen at the UI. If the UI is still illuminated, but
no customer message is displayed go to
OF19-1 IDFE Fault Entry RAP .
Initial Actions
• Refer to BSD 2.2 UI Display in this procedure:
Procedure
PO/PO the machine. The Dark Screen is still displayed.
Y N
If the Dark Screen Display is intermittent, perform the following:
•
Go to BSD 2.2, UI Display. Inspect the connections and connectors to the UI PWB,
VR PWB, the Display, and the Power Supply in the UI Assembly.
• Reseat connectors P/J484 , P/J486 , CN5 , CN6 , and CN1 .
• Go to the +5 VDC Power (IOT LVPS) RAP .
NOTE: If the failure occurred immediately after installing or reconnecting the optional Edit Pad,
check that P/J 800 is connected correctly. It is possible to partially connect this plug upside
down, which will create a power supply short circuit. Check F3 on the Distribution PWB. This
may have also corrupted the UI software, requiring a reload of the software.
Check Fuses F1, F2, F3, F4, and F5 on the Distribution PWB ( PL 9.3 ).
Check Fuses F1, F2, F3, and F5 on the AC Driver PWB ( PL 9.3 ).
Go to BSD 2.2, UI Display and perform the following:
•
Inspect the connectors and connections to the UI PWB, VR PWB, the Display, and the
Power Supply in the UI Assembly.
• Reseat connectors P/J484 , P/J486 , CN5 , CN6 , and INVCN1.
• Go to the +5 VDC Power (IOT LVPS) RAP .
• Replace the UI PWB ( PL 9.5 ).
• Replace the VR PWB ( PL 9.5 ).
• Replace the Power Supply ( PL 9.5 ).
• Replace the Display ( PL 9.5 ).
Two Sided Copy Feature Not Available RAP
The Duplex option is not shown on the UI.
Initial Actions
Ensure that the Left Side Option Memory PWB (side 2) is installed and properly seated on the
MEM SYS PWB.
Procedure
Refer to 15-363 IIT Memory Fail RAP .
manuals4you.com manuals4you.com