Paradyne 9820-2M 用户手册
Monitoring
6-10
9820-A2-GB20-20
June 2000
Power Module LEDs (Model 9820-45M)
Each power module has a green LED which remains lit while power is applied
and the power module is functioning.
and the power module is functioning.
When the yellow front panel System PWR LED is lit, one of the power modules
has failed. The failed power module can be identified from the back of the DSU
by its unlit LED.
has failed. The failed power module can be identified from the back of the DSU
by its unlit LED.
Table 6-8.
Power Module Troubleshooting
Configuration
Symptom
What to Do
(in order, if problem persists)
(in order, if problem persists)
One Power
Module
Module
No front panel LEDs are
lit.
lit.
1. Verify that the receptacle in use
provides 120 Vac.
2. Verify that the power module switch is
in the On position.
Two Power
Modules
Modules
No front panel LEDs are
lit.
lit.
The front panel System
PWR LED is lit.
PWR LED is lit.
2. Call your service representative.