4-66 Phaser 6280 Color Laser Printer Service Manual
General Troubleshooting
Engine Test Print
This test isolates printer hardware problems to either the Engine Control
Board or Image Processor Board.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
â– Image Processor Board, PL9.1.27
â– MCU Board, PL9.1.20
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Remove the Image Processor Board
(
page 8-87).
2 Turn the printer power On (the Control
Panel will be blank).
3 Short the pins on the MCU Board.
4 Did the printer print the Pattern IOT page? Replace the
Image
Processor
Board
(
page 8-87).
Replace the
MCU Board
(
page 8-86).