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4-20 Operational Modes
Performing Diagnostics
The 5992 runs ROM-based Power-up diagnostics automatically, and
user-selectable diagnostics (also ROM-based) on demand.
Extended diagnostics and diagnostics logs and tallies may be run from
the host.
User-selectable diagnostics permit the user to:
•
Display video screens
•
Test the Backlight
•
Test ping-pong communications
•
Read or clear the 5992 tallies
•
Test MSR
To perform user-selectable diagnostics:
1.
Touch the NCR logo with the stylus immediately after Power-up
diagnostics complete.
2.
Touch the stylus to DIAGNOSTICS on the Maintenance Mode
menu, and follow the prompts.
What are tallies?
Tallies record the number of sends, receives, power cycles, reads,
failures, etc., related to the 5992’s internal operations, communications,
MSR, and operating system.
What is the ping-pong test?
The ping-pong test must be initiated from the host. It verfies the
operation of the communications interface, the interface cable, and the
5992, by returning all messages received from the host.