Chapter 4: Diagnostics; Level 0 Diagnostics - NCR 7197 Owner's Manual

7197 Owner's Guide

Chapter 4: Diagnostics

The following diagnostic tests are available for the 7197:
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Level 0 Diagnostics

The printer automatically performs level 0 diagnostics when it is put on-line. Level 0
diagnostics comprise the following actions:
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If the printer has not been turned on before the default values for the printer functions will
be loaded into the non volatile memory during level 0 diagnostics. These values can be
changed in level 1 diagnostics. See "Level 1 Diagnostics" for the functions and their
settings.
When the last step is complete, the Paper Feed button is enabled and the printer is ready
for normal operation. Information about the tests is available to the communication
interface through the commands.
Level 0 Diagnostics (Startup)
Performed during the startup cycle.
Level 1 Diagnostics (Printer Configuration)
Allows configuration of the printer using a Configuration Menu that is printed on a
receipt.
Level 2 Diagnostics (Runtime)
The printer checks the status of these conditions during normal operation.
Level 3 Diagnostics (Remote)
The printer keeps track of counters during normal operation.
Vendor Adjustment
Performed in off-line mode. Allows to change settings for mechanical and perform
printer test. Modifications of these settings are to be made by service personnel only.
Motors are turned off.
Microprocessor timing is checked, CRC check of the firmware ROM is performed,
external RAM is read.
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The green LED flashes once if this action succeeds.
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Level 0 diagnostics stop if this action fails. Failure is indicated by the printer going
dead: knife and print head do not home, LEDs are not lit, the printer is unable to
communicate with the host computer.
Knife is homed. A fault condition is caused if this action fails.
The status of all sensors is checked, and the status bytes are updated.
March 2002
Chapter 4: Diagnostics
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