2-2
Chapter 2: Diagnostics and Configuration
Startup Diagnostics
When the printer receives power or performs a hardware reset, it
automatically performs the Startup Diagnostics (also known as Level 0
Diagnostics) during the startup cycle. The following diagnostics are
performed:
•
Turn off motors
•
Perform boot CRC check of the firmware ROM, test external
SRAM, test EEPROM, and test main program CRC
Failure causes Startup Diagnostics to stop; the printer beeps and
the LED flashes a set number of times, indicating the nature of the
failure. See the table in the “Indicators” section later in this
document for the tone and LED sequences.
•
Check if paper is present
•
Return the knife to the home position
Failure causes a fault condition. See the table in the “Indicators”
section later in this document for the tone and LED sequences.
•
Check if receipt cover is closed
Failure does not interrupt the startup cycle.
When the Startup Diagnostics are complete, a two-tone beep (low then
high frequency) is heard, the Paper Feed Button is enabled and the
printer is ready for normal operation.
If the printer has not been turned on before, or a new EEPROM has
been installed, the default values for the printer functions will be
loaded into the EEPROM during Startup Diagnostics.
