DEC DECstation 5000 Model 100 Series, Maintenance Manual

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Troubleshooting When the Power-Up Self-Test Does Not
Complete
If the power-up self-test does not complete, the left set of
diagnostic LEDs display an error code that indicates the slot
number of the FRU that caused the power-up self-test to stop.
Table 4-2 lists the corrective action for each location where the
test can stop.
Table 4-2. Troubleshooting When the Power-Up Self-Test Does Not Complete
Left LED Display
(1=0n)
Corrective Action
None; test does
not start. Check for loose and damaged connectors and reseat any loose
modules. If the system still does not start, there is a basic problem
in the system. Contact the Digital Customer Support Center.
1111 A hardware problem is preventing the diagnostics from executing.
Contact the Digital Customer Support Center for assistance.
0111 Replace the memory module in memory slot 0 and repeat the
power-up self-test. If the power-up self-test still stops and the
left diagnostic LEDs display 0111, replace the system module and
chassis.
0110 Replace the system module and chassis.
0101 Replace the system module and chassis.
0010
0001 Replace the option module that has the same slot number as the
left LED display.
If the problem option module is a 2D graphics accelerator module,
replace the VSIMM and repeat the power-up self-test before you
replace the 2D graphics accelerator module. If the 2D graphics
accelerator module still fails after you replace the VSIMM, replace
the 2D graphics accelerator module.
0000 If the right LED display is 0000, the self-test completed
successfully.
If the the left LED display is not 0000, replace the option module
in option slot 0.
4–6 Identifying Failed FRUs