Chapter 2: Printer Status, Ethernet and Indicators
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A776-PG00001 D 07/13
A776 (B780) Programming Guide
Chapter 2: Printer Status and Indicators
The A776/B780 printer performs a number of diagnostics that provide useful information about the operating status of
the printer. The following diagnostic tests are available.
• Startup diagnostics, performed during startup cycle.
• Runtime diagnostics, performed during normal printer operation.
• Remote diagnostics, run during normal operation and reported in the print test.
The printer can be configured with the following settings and functions through the configuration menu that is printed
on the receipt. To learn more see the section called “Configuring the Printer” in the A776/B780 User Guide,
page 26.
Communication interfaces (except Ethernet)
Diagnostic modes
RS-232C settings
Printer emulations/software options
Hardware options
Paper Type
Firmware features
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 and solenoids
• 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 light flashes a set number of times,
indicating the nature of the failure. The table in the “Indicators” section
(page 16)
describes the specific tone and
light sequences.
• Check if paper is present
• Return the knife to the home position
Failure causes a fault condition. The table in the “Indicators” section
(page 16)
describes the specific tone and light
sequences.
• Check if receipt cover is closed
Failure does not interrupt the startup cycle.
When the startup diagnostics are complete, the printer makes a two-tone beep (low then high frequency), 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.
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