Xerox 6200B - Phaser Color Laser Printer Service Manual page 114

Using the Print Engine Only Test Print
Print-quality and engine logic problems can be easily isolated to either the Image
Processor Board or the Print Engine by running the Print Engine Only Test Print.
1. Turn printer power OFF.
2.
Remove the Image Processor Board.
3.
Turn printer power ON.
4.
Look inside the Image Processor Board cavity, on the rear of the Engine Control
Board locate jumper pins 1 and 2 on connector P31.
5. With a long screwdriver, touch the pins to short and start the test process, the pins
must remain shorted to execute the test.
6. The printer will begin to print the 600 x 600 engine test print unless an error status
from the Engine Control Board is present. Printing will continue until the jumper
is removed from pin 1 to 2. The prints that are in process will be completed.
Note: Power to the front panel is disabled during this test. The
front panel graphics and all LED's are off.
96 Phaser 6200 Color Laser Printer - Service Manual