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Error Codes
POWER-ON SELFTEST LED INTERPRET A TION
Table A-I. Power-On SeUtest LED Interpretation
ACTIVITY
LED
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
FAULT
LED
Flashing single
blink
Flashing double
blink
Flashing triple
blink
Flashing triple
blink
OFF
LED
INTERPRET ATION
No Power.
Processor completely dead.
Executing self test.
System in ba ttery
back -up mode.
CPU or 0-2 Mb memory
failed.
llnsupported ATP
detected.
Console ATP failed.
Fast/slow 51MB I/F
failed.
Console failed to speed
sense.
Console failed to speed
sense.
Selftest execution
complete.
"H
for
help" prompt
displayed.
ACTION
TOTAKE
Check for AC. Measure
DC supply output.
Replace processor.
Wait for self test
completion.
Wait for AC power
return.
Replace processor PCA.
Remove unsupported
ATP.
Replace A TP in slot I or
replace processor PCA.
Check cable connection
between console and ATP.
Check that console
is
in
REMOTE mode.
Console rna y be defective.
Attempt loopback
da lacomm test.
Replace A TP.
DEC 86
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