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Tools
Communication Diagnostics Test
The communication diagnostics test is a troubleshooting tool for checking the connection
between the printer and the host computer. When the printer is in diagnostics mode, it
prints all data received from the host computer as straight ASCII characters with the hex
values below the ASCII text. The printer prints all characters received, including control
codes such as CR (carriage return). Figure 3 shows a typical test label from this test.
Note • The test label prints upside-down as it exits the printer.
Figure 3 • Communications Diagnostics Test Label
To use communications diagnostics mode, complete these steps:
18. Ensure media is loaded and printer power is ON.
19. Set the print width equal to or less than the label width being used for the test.
20. Press and hold Pause + FEED for two seconds. When active, the STATUS indicator
( ) will alternate between green and yellow.
The printer enters diagnostics mode and prints any data received from the host
computer on a test label
21. Check the test label for error codes. For any errors, check that your communication
parameters are correct.
Errors show on the test label as follows:
• FE indicates a framing error.
• OE indicates an overrun error.
• PE indicates a parity error.
• NE indicates noise.
22. Press and hold Pause + FEED for two seconds or turn the printer power off (O) and
then back ON to exit this self test and return to normal operation.
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