ZyXEL Communications ALC1248G - Manual (Page 29)

ALC1248G User’s Guide
29
C
H A P T E R
3
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.
• Power and LEDs
• DSL Data Transmission
• Local Server
• Data Rate
• Management and Configuration
3.1 Power and LEDs
V
The SYS or PWR LED does not turn on.
V
The ALM LED is on.
Table 9 SYS LED Troubleshooting
STEPS CORRECTIVE ACTION
1 Make sure the power wires are properly connected to the power supply and the power
supply is operating normally. Make sure you are using the correct power source (refer to
the IES User’s Guide).
2 Make sure the power wires are connected properly.
3 Make sure the line card is properly installed.
4 The LED itself or the unit may be faulty; contact your vendor.