Lexmark X644E Service Manual - Page 220

7002-xxx Parallel Wrap test This test is used with a wrap plug to check operation of the parallel port hardware. Each parallel signal is tested. Use Parallel Wrap for the standard parallel port, Parallel 1 Wrap if a parallel port is available by PCI slot 1, or Parallel 2 Wrap if a parallel port is available by PCI slot 2. To run the Parallel Wrap tests: 1. Disconnect the parallel interface cable, and install the wrap plug (P/N 1319128). 2. Select Parallel Wrap, Parallel 1 Wrap, or Parallel 2 Wrap from the HARDWARE TESTS menu. The power indicator blinks green indicating the test is in progress. The test runs continuously until a maximum number of tests is reached. P:###### F:#### • P:###### represents the number of times the memory test has passed and finished successfully. Initially 000000 displays with the maximum pass count being 999,999. • F:##### represents the number of times the memory test has failed and finished with errors. Initially 0000 displays with the maximum fail count being 999,999. Initially only four digits appear, but additional digits appear as needed. Each time the test finishes, the screen updates. If the test passes, the pass counter increases by 1, however if the test fails, a message displays for approximately three seconds. Once the maximum count is reached, the test stops. The power indicator goes on solid, and the final results display. To stop the test before completion, press Stop ( ). Serial Wrap test The serial wrap tests are used to check the operation of the serial port hardware using a wrap plug. Use Serial 1 Wrap if a serial port is available through PCI slot 1 and Serial 2 Wrap if the serial port is available through PCI slot 2. To perform the Serial Wrap tests: 1. Disconnect the serial interface cable, and install the serial wrap plug. 2. Select Serial 1 Wrap or Serial 2 Wrap from HARDWARE TESTS. The power indicator blinks green indicating the test is in progress. The test runs continuously until a maximum number of tests is reached. P:###### F:#### • P:###### represents the number of times the memory test has passed and finished successfully. Initially 000000 displays with the maximum pass count being 999,999. • F:##### represents the number of times the memory test has failed and finished with errors. Initially 0000 displays with the maximum fail count being 999,999. Initially only four digits appear, but additional digits appear as needed. Each time the test finishes, the screen updates. If the test passes, the pass counter increases by 1, however if the test fails, a message displays for approximately three seconds. Once the maximum count is reached, the test stops. The power indicator goes on solid, and the final results display. To stop the test before completion, press Stop ( ).The message Serial Wrap x Test Canceled displays, and the printer returns to the HARDWARE TESTS menu. 3-10 Service Manual