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Parallel Wrap Test
Use this test with a wrap plug to check operation of the parallel port hardware. Each parallel signal is tested.
To run the Parallel Wrap Test:
1.
Disconnect the parallel interface cable, and install the wrap plug (P/N 1319128).
2.
Select the Parallel Wrap Test from HARDWARE TESTS in the Diagnostics mode.
The power indicator blinks, indicating the test is in progress. The test runs continuously until canceled.
Each time the test finishes, the screen updates. If the test passes, the Pass Count increases by 1. However, if
the test fails, one of the following messages appears for approximately three seconds:
Sync Busy Error
Byte Interrupt Request Error
Strobe Interrupt Request Error
Init Fail 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
Autofeed Rising Interrupt Error
Clear Autofeed Rise Error
False Autofeed Rise Error
Autofeed Falling Interrupt Error
Clear Autofeed Fall Error
Once the maximum count is reached the test stops, the power indicator goes on solid and the final results are
displayed. Press Back (
) or Stop (
) to exit the test.
5061
3-17
Diagnostic aids
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