Technical data

Troubleshooting, Continued
Table C–1 (Continued) System Problems
Symptom Possible Cause Corrective Action
Power supply
connector to
system module
is not seated
correctly.
Correctly connect power
source to CPU module.
Power-up display
contains an error
message.
Possible system
error.
Enter the SHOW ERROR
command. Refer to the
error code tables in the
VAXstation 4000 Service
Information Kit Model 90
Base System to interpret
the error code.
Interpret the diagnostic
LEDs at the front of the
system. Refer to the
LED error code tables in
VAXstation 4000 Service
Information Kit Model
90 Base System for the
diagnostic LED error code
meanings.
System does
not boot on
power-up.
Software is not
installed.
Install the system
software. Refer to the
software documentation
for installation
instructions.
Default recovery
action is set to
halt.
Change the default
recovery action to boot the
system from the system
disk.
Continued on next page
C–5