5-1
5 Maintenance and troubleshooting
Power supply failure
The S6520X-30QC-EI, S6520X-54QC-EI, S6520X-30HC-EI, S6520X-54HC-EI, S6520X-30QC-HI,
S6520X-54QC-HI, S6520X-30HC-HI, and S6520X-54HC-HI switches each provide two power
supply status LEDs PWR1 and PWR2. The PSR250-12A, PSR250-12A1, PSR450-12D,
PSR1600B-12A-B, PSR600-54A-B, and PSR920-54A-B power supplies provide also LEDs. You can
observe the power supply status LEDs on the switch in combination with the LEDs on the power
supplies to identify power supply failures. For information about the LEDs on the power supplies, see
the manuals for the power supplies.
For the S6520X-30HF-EI, S6520X-54HF-EI, S6520X-30HF-HI, and S6520X-54HF-HI switches, you
can determine whether a power supply failure has occurred by observing the system status LED
(SYS). For information, see hardware information and specifications for the switch series.
Symptom
S6520X-30QC-EI, S6520X-54QC-EI, S6520X-30HC-EI, S6520X-54HC-EI, S6520X-30QC-HI,
S6520X-54QC-HI, S6520X-30HC-HI, and S6520X-54HC-HI switches
The status LED on a power supply in combination with the power supply status LED on the
switch indicates that the power supply has failed.
S6520X-30HF-EI, S6520X-54HF-EI, S6520X-30HF-HI, and S6520X-54HF-HI switches
The system status LED on the switch indicates a power supply failure.
Solution
To resolve the issue:
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
supply has good ventilation.
4. If the issue persists, contact H3C Support.
To replace a power supply, see "Installing and removing a power supply."
Fan tray failure
!
If both fan trays fail during switch operation, replace them 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 remains in position before the replacement.
If the ambient temperature is higher than 27°C (80.6°F), replace the fan tray immediately.
The switch uses removable fan trays. If a fan tray fails, see "Installing and removing a fan tray" to
replace the fan tray.
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