Troubleshooting; System Power-Up Sequence - Tektronix Phaser 600 Service Manual

Chapter
6

System power-up sequence

Troubleshooting

This chapter discusses troubleshooting the printer. Troubleshooting is discussed
with two approaches:
A step-by-step verification procedure that systematically confirms that
particular components of a printer are properly functioning until a
problem is found.
A symptom/cause scheme that lists particular printer failures and
error codes and their possible causes.
The following lists the chain of events that occur when you turn on a printer.
You can follow this list as one means of determining if the printer is operating
correctly.
Power switch turned on:
Front panel LCD and LEDs turned on then off.
Power-on self-tests (POSTS) performed on electronic systems and the
results displayed on the front panel.
Both front panel LEDs blink twice and the LCD blanks out.
The Error LED turns off and the front panel indicates
" Initializing... ".
Head maintenance motor runs until the stop is found in the head
maintenance cam gear.
Ink loader's printhead cover motor energizes.
Fuser motor drives the fuser shuttle right and left along the fuser
track.
Head-to-media motor ran to ensure it is in its home (raised) position.
The drum is check to ensure it is in its home position.
The print engine board SRAM I/O is checked
Service Manual 6-1