Lexmark Optra C710 Service Manual - Page 212

5016-001 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. The following screen displays: Serial X Wrap P:###### F:##### • X indicates which serial port is being tested, (black = standard, 1 = optional serial port #1, 2 = optional serial port #2 and 3 = operational serial port #3). • F represents the number of times the test has failed or finished with errors. Initially 00000 is displayed for #####. The maximum fail count is 99,999. Note: The power indicator blinks indicating the test is running. 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 3 seconds and the Fail Count increases by 1: Receive Status Interrupt Receive Data Interrupt Error Transmit Empty Error Receive Data Ready Error Framing Error Overrun Error Error Status Error Transmit Data Interrupt Error Threshold Error Break Interrupt Error Parity Error Data Error Data 232 Error FIFO Error DSR PIO Error CTS Error CTS PIO Error Data 422 Error DSR Error DSR Interrupt Error CTS Interrupt Error Once the maximum count is reached the test stops and the final results display. 3. Press Return/Stop to exit the test. 3-14 Service Manual