Lexmark E238 Service Manual - Page 169

4511-xxx Parallel Wrap This test is used 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 HARDWARE TESTS from Diagnostics Mode. 3. Select Parallel Wrap. 4. Select Parallel Wrap, Parallel 1 Wrap, Parallel 2 Wrap, or Parallel 3 Wrap. The power indicator blinks, indicating the test is in progress. The test runs continuously until canceled. Parallel Wrap 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 00000 displays with the maximum fail count being 99,999. 5. Each time the test finishes, the screen updates. If the test passes, the pass count increases by 1, however if the test fails, a message displays for approximately three seconds. One of the following failure messages may display: Sync Busy Error Byte Interrupt Request Error Strobe Interrupt Request Error Init Fail Error Init Busy 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 Diagnostic aids-E340 and E342n 3-25