Lexmark W820 Service Manual page 187

The following screen is displayed and the printer begins testing the parallel hardware for
the first time.
Parallel Wrap
P:###### F:#####
Terminology:
•
P:###### represents the number of times the test has passed (finished
successfully). Initially 000000 is displayed for ######. The maximum pass count is
999,999.
•
F:##### represents the number of times the test has failed (finished with errors).
Initially 00000 is displayed for #####. The maximum fail count is 99,999.
The power indicator blinks indicating the test is in process. The printer continually runs
the same test until cancelled from the operator panel (by pressing Return or Stop).
Each time the test finishes, the screen is updated with the result. If the test passes, then
the Pass Count is incremented by 1. However, if the test fails, then one of the following
failure messages is displayed for approximately 3 seconds and then the Fail Count is
incremented by 1.
•
Sync Busy Error
•
Byte Interrupt Request Error
•
Strobe Interrupt Request Error
•
Init Fall Error
•
Init Busy Error
•
Init Rise Error
•
Host Busy Error
•
RAM Data FF Error
•
RAM Data AA Error
•
RAM Data 00 Error
•
RAM Data 55 Error
•
DMA Count Error
•
DMA Address Error
•
DMA Interrupt Error
•
DMA Memory Error
•
DMA Background Error
•
Clear Init Rise Error
•
False Init Rise Error
•
False Init Fall Error
•
Autofeed Rising Interrupt Error
•
Clear Autofeed Rise Error
•
False Autofeed Rise Error
•
Autofeed Falling Interrupt Error
•
Clear Autofeed Fall Error
Once the maximum pass count or fail count is reached, the test is stopped and the final
test results are displayed. Press Return or Stop to exit the test.
4025-XXX
3-11
Diagnostic Aids