ZyXEL Communications Network Card gigabit ethernet line card version 4.02 Uživatelský manuál stáhnout pdf (Strana 19)

GLC1320G-55 User’s Guide 19

CHAPTER 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

• Data Transmission

• Local Server

• Management and Configuration

3.1 Power and LEDs

The SYS or PWR LED does not turn on.

The ALM LED is on.

The ALM (alarm) LED lights when the line card is overheated or the voltage readings are outside

the tolerance levels.

Table 6 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.

Table 7 ALM LED Troubleshooting

STEPS CORRECTIVE ACTION

1Use the sys monitor status command to verify the cause of the alarm. See step 2

if the unit is overheated, and step 3 if the voltages are out of the allowed ranges.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 29 30

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ZyXEL Communications Network Card gigabit ethernet line card version 4.02 Uživatelský manuál Strana 19