Xerox Phaser 7760 Service Manual page 53

003-578 Paper Tray Error
All the Tray Level Sensors did not energize.
Fault(s) 007-397, 007-935 may be declared.
Procedure
Check the Diagnostic Fault History. 007-281, 007-282, 007-283, 007-284, 007-291, or 007-
293 fault has occurred.
Y N
The machine is equipped with a TTM.
Y N
+24 VDC is measured at P/J555-7 (Section 7, TT Module (rear) Plug/Jack Loca-
tions - Figure 25 on the Tray Module PWB
Y N
Go to the +24 VDC Wirenets to troubleshoot.
+5 VDC is measured at P/J555-1 on the Tray Module PWB
Y N
Go to the +5 VDC Wirenets to troubleshoot.
Replace the following in sequence:
• Tray Module PWB (PL 16.15)
• Engine Control Board (MCU PWB)
The machine is equipped with a 1TM or a 3TM. +24 VDC is measured at P/J555-7 on
the Tray Module PWB (PL 15.9).
Y N
Go to the +24 VDC Wirenets to troubleshoot.
+5 VDC is measured at P/J555-1 on the Tray Module PWB
Y N
Go to the +5 VDC Wirenets to troubleshoot.
Replace the following in sequence:
• Tray Module PWB (PL 15.9)
• Engine Control Board (MCU PWB)
Go to the appropriate RAP.
Revised
Phaser 7760 Color Laser Printer
(PL 16.15).
(PL 16.15).
(PL 13.1)
(PL 15.9).
(PL 13.1)
003-587 Paper Tray 2 Not Available
Paper Tray 2 not available.
Fault 007-270 is declared.
Procedure
Turn the printer power Off, then On. The problem continues.
Y N
Return to Service Call Procedures.
Go to RAP 007-270, Tray 2 Paper Size Sensor.
January 2010
2-17
Status Indicator RAP's
003-578, 003-587