Problem Solving Using the LEDs
A-6 Problem Solving
Power LED is flashing.
The module
connection is faulty.
Lift the release lever,
then reseat the module.
Faulty DEChub 900
slot connection.
Reinstall the module into
another slot.
DEChub 900 power
supply is faulty.
Replace the DEChub
900 power supply.
Module OK LED is off.
Module does not have
sufficient power.
Ensure Power LED is
on.
Self-test is in progress.
Wait up to five-minutes
for self-test to complete.
Self-test failed.
If the LED does not light
after five-minutes, lift
the release lever
momentarily to repeat
the self-test. If self-test
fails again, replace the
module.
Module OK LED is
flashing
Non-fatal error.
See the error message on
the console port.
Fan is faulty.
Call your DIGITAL
representative to replace
the fan.
Seven-segment display
is flashing C, d, or n.
Memory failure.
Return the unit to Digital
Equipment Corporation.
Seven-segment display
is flashing or displaying
an 8.
Fatal error.
Return the unit to Digital
Equipment Corporation.
Seven-segment display
shows a 3.
There is a problem
downloading the
software. The
software will continue
to try to load.
If the display persists,
see the error message on
the console port.
Table A-3: Problem Solving Using the LEDs
Symptom
Probable Cause
Corrective Action
