Users Manual Part 4

123
Diagnostics and Troubleshooting
Communication Diagnostics Mode—Communication Diagnostics Test
5/9/19 ZT411/ZT421 Color Touch User Guide P1106464-001
Communication Diagnostics Mode
The communication diagnostics test is a troubleshooting tool for checking the interconnection
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 8 shows a typical test label from this test.
Figure 8 • Sample Communications Diagnostics Mode Label
To use communications diagnostics mode, complete these steps:
1. Set the label width equal to or less than the actual media width being used for the test. Tap
Settings > Media Settings to access the label width setting.
2. Tap the Diagnostics icon, and set the Diagnostic Mode option to ENABLED.
The printer enters diagnostics mode and prints any data received from the host computer
on a test label
3. 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.
4. To exit this self test and return to normal operation, power cycle the printer or set the
Diagnostic Mode option to DISABLED.
Note • The test label prints upside-down.
DRAFT