January 2010
2-17
Phaser 7760 Color Laser Printer
003-578, 003-587
Status Indicator RAP’s
Revised
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.
YN
The machine is equipped with a TTM.
YN
+24 VDC is measured at P/J555-7 (Section 7, TT Module (rear) Plug/Jack Loca-
tions - Figure 25 on the Tray Module PWB (PL 16.15).
YN
Go to the +24 VDC Wirenets to troubleshoot.
+5 VDC is measured at P/J555-1 on the Tray Module PWB (PL 16.15).
YN
Go to the +5 VDC Wirenets to troubleshoot.
Replace the following in sequence:
• Tray Module PWB (PL 16.15)
• Engine Control Board (MCU PWB) (PL 13.1)
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).
YN
Go to the +24 VDC Wirenets to troubleshoot.
+5 VDC is measured at P/J555-1 on the Tray Module PWB (PL 15.9).
YN
Go to the +5 VDC Wirenets to troubleshoot.
Replace the following in sequence:
• Tray Module PWB (PL 15.9)
• Engine Control Board (MCU PWB) (PL 13.1)
Go to the appropriate RAP.
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.
YN
Return to Service Call Procedures.
Go to RAP 007-270, Tray 2 Paper Size Sensor.
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