Kurzweil HUB7, Manual, Page: 45 / 56

RSP8 Diagnostics and Troubleshooting
Appendix A-3
In case of failure, the soft button legends change as follows:
RETRY – Rerun the current diagnostic
STOP – Stop burnin and return to the Main Diagnostic Menu.
SKIP – Skip this diagnostic and continue, skipping it again each
cycle.
CONTINUE – Continue running the burnin and retry this
diagnostic next cycle.
The Skip option is handy if you wish to continue burning-in even
though one of the tests is always failing.
Description of the Individual Diagnostic Tests
Timer Test
Checks the functioning of the hardware timers that are part of the
RSP8's internal microprocessor. Each of the three hardware
timers is compared to a software simulated timer and passes if
the timing result is the same. When complete the diagnostic
displays either PASS or FAIL. A failure indicates a problem with
the microprocessor chip on the CPU board.
EPROM Test
Veri fi es the accuracy of the software EPROM content by
calculating the sum of all of its data and comparing to a stored
checksum value. When complete the diagnostic displays the
checksum and either PASS or FAIL. A failure indicates a problem
with the EPROM chip on the CPU board.
RAM Test
Writes a pseudo-random pattern into the 32K of RAM then reads
it back and checks against the same pseudo-random sequence.
Several passes with different data are performed. When complete
the diagnostic displays either PASS or FAIL. A failure indicates a
problem with the RAM chip on the CPU board.