Problem Solving A-5
DIGITAL MultiSwitch Fast Ethernet Hub 924TX Problem Solving Using the LEDs
Table A-2:
Typical Combined States of LEDs
Symptom
Probable Cause
Corrective Action
Power LED is off.
The module is not
rec5Vdc.
Check the power status on the
module, or DIGITAL MultiSwitch
900.
If the module indicates that power
is available for this module, lift the
release lever and reseat or remove
the module.
If the problem persists, either
replace the module or contact your
service representative to correct
the problem.
Module OK LED is
off.
The module Self-test
in progress.
Self-test failed.
Wait for self-test to complete.
If the LED does not light within 60
seconds disconnect the module and
plug it in again.
If self-test fails again, replace the
module. If the problem persists,
contact your service representative
to correct the problem.
The module OK
LED is off and
Ethernet Activity
LED for Port 1 is
blinking green
(once every 8
seconds).
The module’s
firmware image is
corrupted.
Module failed
diagnostics with a
fatal error; or a fatal
error was sensed
during steady state
operation.
Either replace the module or
contact your service representative
to correct the problem.
