Digital Equipment DEC 3000 600 AXP, Service Information

Page: 230 / 461

NVR Diagnostic
The TOY test verifies that the time-of-year clock has been set. If
it has been set, then the test verifies the clock’s operation. If the
time is not set, then all registers used by the time-of-year clock
are tested.
The register test verifies that each TOY register can hold all
possible values.
The system performs the NVR diagnostic when you:
• Power up the unit.
• Enter console mode and select the NVR diagnostic.
The diagnostic isolates faults to the FRU level.
Running NVR
Diagnostics To run the NVR diagnostic and subtests, use the TEST command.
>>> T[EST] {device name} [subtest]
Return
Subtests
Table 9–7 lists NVR subtests.
Table 9–7 NVR Diagnostic Subtests
Subtests Description
TOY Runs the following:
• Clock test
• Test to ensure that the clock is ticking
• Clock re-entry test
NVR Runs the following:
• Check battery test
• NVR Register test
INTERRUPT Runs the Interrupt test.
INIT Runs the Initialization test.
? Lists available diagnostics.
9–10