Printer Self-Diagnostics - Tektronix PHASER 560 Service Manual

9
Checks and Adjustments

Printer self-diagnostics

9-6 Phaser 560 Color Printer
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The printer's image processor features four types of self-test modes. The type of
self-tests run depend upon which front panel buttons are pressed while the
printer is turned on. The button combinations are listed here.
Turning on the printer or restarting the printer remotely executes
normal image processor power-up self-tests and then, if the tests pass,
proceed to launch its PostScript interpreter.
Pressing and holding Button 1 (the left-most button, marked Exit), as
you turn on the printer, skips the image processor's self tests and
proceed directly to launching its PostScript interpreter.
Pressing and holding Button 2 (the second from the left button), as
you turn on the printer, executes the image processor's verification
self-tests. These series of test continue until the printer is turned off.
Pressing and holding Button 3, as you turn on the printer, executes
interactive service test with the image processor board and the print
engine.
Pressing and holding Button 4, as you turn on the printer, executes
individual service tests with the image processor board and the print
engine. This mode is generally used only by printer manufacturing.
Pressing and holding Button 1 and 4, as you turn on the printer, allows
you to reset the NVRAM to its factory-default values. Refer to the
later topic, "Resetting NVRAM" on page 9-12. This also reset the
NVRAM of an installed network card.
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