Serial Wrap Tests - Lexmark Optra SC 1275 Service Manual

Once the maximum pass count or fail count is reached, the test
stops, the power indicator turns on solid, and the final test results
display. Press Return or Stop to exit the test.

Serial Wrap Tests

This test uses a wrap plug to check the operation of the serial port
hardware. Each serial signal is tested.
To run the serial wrap test:
1. Disconnect the parallel interface cable, and install the serial
wrap plug.
2. Select HARDWARE TESTS from the Diagnostics Menu.
3. Select the appropriate Serial Wrap Test (Serial Wrap, Serial 1,
Serial 2, or Serial 3 Wrap).
The following screen displays and the printer begins testing the
serial hardware for the first time:
Serial Wrap X
P:###### F:#####
•
X indicates which serial port is being tested (1=optional serial
port #1, 2=optional serial port #2, 3=optional serial port #3).
•
P:###### represents the number of times the memory test has
passed (finished successfully). Initially 000000 displays for
######. The maximum pass count is 999,999.
•
F:##### represents the number of times the memory test has
failed (finished with errors). Initially 00000 displays for #####.
The maximum fail count is 99,999.
The power indicator blinks indicating the memory test is in progress.
The printer continually runs the same test until canceled from the
control 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 increments by 1. However, if
the test fails, then one of the following messages display for approxi-
mately 3 seconds and then the Fail Count increments by 1.
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