H3C Technologies H3C S5820V2 Series Switches - Manual (Page 39)

31
Maintenance and troubleshooting
Power module failure
You can use the LEDs on the power module to identify a power module failure. For more information
about the LEDs on a power module, see H3C LSVM1AC300 & LSVM1DC300 Power Modules User
Manual and H3C LSVM1AC650 & LSVM1DC650 Power Modules User Manual.
Symptom
The LEDs on the power module are not steady green (active) or flashing green (standby).
Solution
To resolve the problem:
1. Verify that the power cord is correctly connected.
2. Verify that the power source meets the requirement.
3. Verify that the operating temperature of the switch is in an acceptable range and the power
module has good ventilation.
4. If the problem persists, contact H3C Support.
To replace a power module, see " Installing/removing a power module ."
Fan tray failure
CAUTION:
To ensure good ventilation for the switch:
• Install two fan trays of the same model on the switch. Do not power on the switch when it does not have
fan trays or has only one fan tray installed.
• If both fan trays fail, replace the fan trays within 2 minutes.
• If one fan tray fails, perform either of the following tasks:
{
If the ambient temperature is not higher than 27°C (80.6°F), replace the fan tray within 24 hours and make
sure the failed fan tray is in position before the replacement.
{
If the ambient temperature is higher than 27°C (80.6°F), replace the fan tray immediately.
When a fan tray has problems, the system status LED is steady red and the system outputs alarm
messages.
To replace a failed fan tray, see "
Installing/removing a fan tray ."