Xerox Phaser 7760 Service Manual page 69

004-336 Interface PWB Fuse F3 Open
Fuse F3 on the Interface PWB is open.
Troubleshooting References
Table 1 References
Applicable Parts Parts List Wiring and Plug/Jack References
I/F PWB PL 9.1
Troubleshooting Procedure
NOTE: No error message will be displayed if Fuse F3 on the Interface PWB opens during the
printing process. After power is cycled, the 004-336 error code should be displayed.
Fuse F3 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, pin 4, pin 5
• P532, pin 7
• P533, pin 3
• P535, pin 10
• P536, pin 10, pin 11
• P537, pin 6, pin 11
• P539, pin A6
• P540, pin B3, pin B4
• P541, pin A1, pin B1, pin B2
Revised
Phaser 7760 Color Laser Printer
Section 7, I/F PWB, Main Motor, LVPS T11 Plug/Jack
Locations - Figure 16
Block Schematics and Wiring Schematics -
004-337 Interface PWB Fuse F4 Open
Fuse F4 on the Interface PWB is open.
Troubleshooting References
Applicable Parts
I/F PWB
Chain 13
Troubleshooting Procedure
NOTE: No error message will be displayed if Fuse F4 on the Interface PWB opens during the
printing process. After power is cycled, the message "Transfer Roller Contact Failure" and the
004-337 error code should be displayed.
Fuse F4 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.
• P537, pin 6, pin 11
• P540, pin B3, pin B4
• P541, pin B1, pin B2
January 2010
2-33
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 -
004-336, 004-337
Chain 13
Status Indicator RAP's