3-38 Service Level Troubleshooting
Startup (Level 0) Diagnostics
The printer automatically performs startup diagnostics during the startup cycle when
power is supplied or when the printer goes online. Startup diagnostics comprise the
following actions:
1. Power off the printer.
2. Perform CRC check of the firmware ROM, read external RAM.
Note: Failure causes startup diagnostics to stop.
3. EEPROM check
Note: Failure causes startup diagnostics to stop.
4. Printer Status (Amber) LED is turned on.
5. Check if paper is present.
6. Return the knife to the home position.
Note: Failure causes a fault condition.
7. Check if printer Top Cover/Printer Door is closed.
Note: Failure causes turning on the Printer Status (Amber) LED until the Top
Cover/Printer Door is closed.
When the last step is complete, the Paper Feed button is enabled and the printer is
ready for normal operation. Information about the test is available in the communication
interface through the commands.
If the printer has not been turned on, or a new EEPROM has been installed, the default
values for the printer functions (set in Level 1 Diagnostics) are loaded into the EEPROM
during startup diagnostics. For more information on the printer settings, refer to Printer
Configuration (Level 1) on the facing page. If the EEPROM load has failed, the Printer
Status LED is turned on.
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