Force Computers SPARC CPU-54, Reference Manual

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Troubleshooting
SPARC/CPU-54 A - 3
Dear Customer,
a typical VMEbus system is highly sophisticated. This chapter can be taken as a hint list for detect-
ing erroneous system configurations and strange behaviors. It cannot replace a serious and sophisti-
cated presales and postsales support during application development.
If it is not possible to fix a problem with the help of this chapter, contact your local sales representa-
tive or FAE for further support.
Problem Possible Reason Solution
Application software does not
work Memory ranges of system and peripheral
boards do not match Change application software so that
memory ranges match I/O cards and
host.
Not enough disk capacity on mass stor-
age device Add disk capacity.
Not enough system memory Add system memory.
Used I/O ranges do not match Change application software so that I/O
ranges match I/O cards and host.
Board does not boot Boot device not partitioned according to
used operating system Check partition according to the operat-
ing system’s needs.
Boot sequence not correct Correct the boot sequence.
Interrupts not set correctly Set interrupts correctly.
Memory’s timing parameters in firm-
ware are outside specified ranges of used
memory type Set timing parameters correctly if config-
urable.
Wrong configuration of boot devices Configure boot devices correctly.
Board does not work Backplane defect 1. Check VME slot position to be used
for bent or broken pins.
2. Replace damaged backplane.
Backplane voltages wrong or missing 1. Check that all backplane voltages are
within their specific ranges.
2. Check that power supply is capable
to drive the respective loads.
Board defect Replace board.
Cables not connected Connect all cables.
Cables connected to wrong connector Check if plug fits into connector. Recon-
nect all cables to right connectors.