Lexmark T620 Service Manual - Page 184

4069-5XX/7XX 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 three seconds and the Fail Count increases by 1: Receive Status Interrupt Error Status Error Receive Data Interrupt Error Transmit Data Interrupt Error Transmit Empty Error Threshold Error Receive Data Ready Error Break Interrupt Error Framing Error Parity Error Overrun Error Data Error Data 232 Error Data 422 Error FIFO Error DSR Error DSR PIO Error DSR Interrupt Error CTS Error CTS PIO Error CTS Interrupt 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. 3-18 Service Manual