Xerox Phaser 7760 Service Manual page 68

004-334 Engine Control Board Fuse F5 Open
Fuse F5 on the Engine Control Board is open.
Troubleshooting References
Table 1 References
Applicable Parts Parts List Wiring and Plug/Jack References
Engine Control Board PL 13.1
(MCU PWB)
Troubleshooting Procedure
NOTE: No error message will be displayed if Fuse F5 on the Engine Control Board opens dur-
ing the printing process. After power is cycled, the 004-334 error code should be displayed.
Fuser F5 on the Engine Control Board provides circuit protection through the following P/Js.
Verify that there are no short circuits or components that would cause this Fuse to open again
if replaced.
• P400, pin 4
Status Indicator RAP's
004-334, 004-335
Section, Engine Control Board (MCU PWB) Plug/
Jack Locations - Figure 15
Block Schematics and Wiring Schematics -
004-335 Interface PWB Fuse F2 Open
Fuse F2 on the Interface PWB is open.
Troubleshooting References
Applicable Parts
Interface PWB
Chain 13
Troubleshooting Procedure
NOTE: The error message "Accumulator Belt Failure" will be displayed if Fuse F2 on the Inter-
face PWB opens during the printing process. After power is cycled, the message "Accumulator
Belt Failure" and the 004-335 error code should be displayed.
Fuse F2 on the Interface PWB provides circuit protection through the following P/Js. Verify that
there are no short circuits or components that would cause this Fuse to open again if replaced.
• P531, pin 3
• P539, pin A8
January 2010
2-32
Table 1 References
Parts List Wiring and Plug/Jack References
PL 9.1 Section 7, I/F PWB, Main Motor, LVPS T11 Plug/Jack
Locations - Figure 16
Block Schematics and Wiring Schematics -
Phaser 7760 Color Laser Printer
Chain 13
Revised