NEC EXPRESS5800/140He, Service Manual

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4.5 Fault Repair and Troubleshooting
If a fault occurs during system operation, always acquire the dump if possible (by trying to acquire
the dump actually).
If the dump can be acquired, issue the difficulty through the appropriate route to request the
detailed analysis.
For troubleshooting, basically execute the POST and T&D program to check whether a hardware
error occurs or not. Then any error indication appears on the display.
Figure 4.1 shows the flow of the troubleshooting based on the POST and T&D program.
Power ON
Run POST.
Error?
Suppose suspected package
depending on message.
Run TeDoLi.
Replace the package.
Error?
Suppose suspected package
depending on message.
Analyze log by
ESMPRO etc.
Replace the package.
Log?
Suppose suspected package
depending on message.
Good
Replace the package.
Figure 4.1 Troubleshooting flow
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