Lexmark Optra T Service Manual - Page 150
Serial Wrap Test, Wrap, Serial 1 Wrap, Serial 2 Wrap or Serial 3 Wrap. P and F
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4069-XXX 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 This test is used 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. 3-12 Service Manual