ZyXEL Communications SLC1224, Руководство пользователя

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SLC1224 User’s Guide
Chapter 10 Troubleshooting 121
C
H A P T E R
10
Troubleshooting
This chapter covers potential problems and possible remedies. After each problem description,
some steps are provided to help you to diagnose and solve the problem.
10.1 The SYS or PWR LED Does Not Turn On
10.2 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 41 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-2000 or IES-3000 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 42 ALM LED Troubleshooting
STEPS CORRECTIVE ACTION
1 Use the lcman command <slot> hmon 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.
2 Ensure that the IES-2000 or IES-3000 is installed in a well-ventilated area and that normal
operation of the fans is not inhibited. Keep the bottom, top and all sides clear of
obstructions and away from the exhaust of other equipment.
3 If the voltage levels are outside the allowed range, take a screen shot of the lcman
command <slot> hmon command display and contact your vendor.