Specifications

7193 Owner’s Guide Chapter 4: Diagnostics
August 1998 25
Chapter 4: Diagnostics
The following diagnostic tests are available for the 7193:
• Level 0 Diagnostics
Performed during the startup cycle
• Level 1 Diagnostics (setup mode)
Available in a dedicated environment and accessed through the DIP Switches
• Level 2 Diagnostics
Performed during normal printer operation
• Level 3 Diagnostics
Maintained during normal operation and printed in the print test
Level 0 Diagnostics
The printer automatically performs level 0 diagnostics during the startup cycle when
power is supplied or when the printer is put on-line. Level 0 diagnostics comprise the
following actions:
• Motors are turned off
• Microprocessor timing is checked, CRC check of the firmware ROM is performed,
external RAM is read
Failure causes level 0 diagnostics to stop; the printer beeps once when the test is
successfully completed.
• Checks if paper is present
• Homes knife
Failure causes a fault condition.
• Checks if receipt cover is closed
Failure does not interrupt the startup cycle.
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 to the communication
interface through the commands.
If the printer has not been turned on before, or a new EEROM has been installed, the
default values for the printer functions (set in Level 1 Diagnostics) will be loaded into the
EEROM during level 0 diagnostics. The printer beeps twice when this occurs. See the tables
in “Level 1 Diagnostics” for the printer settings. If the printer beeps twice at any other
time, it indicates that the EEROM has failed.