Power-On Self Test (Post); Device Tests; Quick Disk Test - Lexmark 11A4006 - Optra K 1220 B/W Laser Printer Service Manual

Power-On Self Test (POST)

When you turn the machine on the following POST sequence takes
place:
1. The Power LED turns on.
2. Diamonds scroll across the display, then clear.
3. "Performing Self Test" appears on the display.
4. The printhead mirror motor turns on.
5. "Warming Engine" appears on the display and the Busy LED
starts flashing.
6. The fuser lamp turns on to warm the engine. The fuser takes
longer to warm up from a cold start than a warm start.
7. The process and engine fans turn on.
8. The main motor turns on which turns the fuser hot roll, backup
roll, exit rollers, and developer gears in the print unit.
9. Once the engine has warmed up, the main motor and fans stop
turning.
10. "Ready" appears on the display.

Device Tests

Quick Disk Test

This test performs a non-destructive read/write on one block per
track on the disk. The test reads one block on each track, saves the
data, and proceeds to write and read four test patterns to the bytes
in the block. If the block is good, the saved data is written back to the
disk.
To run the Quick Disk Test:
1. Select the Quick Disk Test from the Device Tests menu.
•
The busy indicator flashes while the test is in progress.
•
"Quick Disk Test/Test Passed" message displays if the test
passes and the busy indicator turns on solid.
•
"Quick Disk Test/Test Failed" message displays if the test
failed and the busy indicator turns on solid.
2. Press Go, Return, or Stop to return to the Device Tests menu.
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