Service Manual
6-1
Chapter
6
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.
System power-up sequence
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
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