Serial Wrap Test - Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual

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 displays 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 display.
Press Return/Stop to exit the test.

Serial Wrap Test

Use this test to check the operation of the Serial Port Hardware using a wrap plug. Each
signal is tested.
To run the Serial Wrap Test:
1.
Disconnect the serial interface cable and install the wrap plug.
2.
Select the appropriate Serial Wrap Test from the menu: Serial Wrap, Serial 1 Wrap,
Serial 2 Wrap or Serial 3 Wrap. P and F represent the same numbers for DRAM.
–
The power indicator blinks indicating the test is running.
3.
This test runs continuously unless canceled by pressing Return/Stop.
Each time the test finishes, the screen updates with the result. If the test passes, the Pass
Count increases by 1, however if the test fails, one of the following failure messages
displays for approximately three seconds and the Fail Count increases by 1:
5060-XXX
3-7
Diagnostic Aids