Making A Print Engine Only Test Print - Tektronix PHASER 780 Service Quick Reference Manual

Making a print engine only test print

Using the image processor.
1. Turn off the printer.
2.
Remove the right side panel to access the image processor board.
3. Locate switch 4 of S930 on the image processor board. Closing switch 4
bypasses the image processor board and places the engine control board
into test mode upon power up.
4. Turn on the printer.
5.
The printer generates process black (all four colors layered) grid patterns.
The printer feeds from the first tray that has paper - in this order; Tray 1,
Tray 2, Tray 3, Tray 4, and multi-purpose feeder. The printer sends the test
prints to the face down output tray. The printer generates test prints until
you stop the test.
6.
Switch off printer main power to stop generating test prints.
7.
Move the S930 switch 4 to the off (open) position.
Using the print engine board.
installed.
1.
Turn off the printer.
2.
Remove the image processor so you can access the engine control board.
3.
Locate JP3, just below the ROM chip on the engine control board.
4. Move the switch to the ON position.
5. Turn on the printer.
6.
The printer generates test prints just as it does in the previous procedure.
7.
Switch off printer main power to stop generating test prints.
8. Move the switch to the 1 position.
42
Phaser 780 Color Printer
To generate a test print without the image processor