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Maintenance and troubleshooting
Power module failure
Symptom
The power module status LED on a power module is not steady green.
For more information about the LEDs on a power module, see H3C LSVM1AC650 & LSVM1DC650
Power Modules User Manual.
Solution
To resolve the issue:
1. Verify that the power cord is connected correctly.
2. Verify that the power source is as required by the switch.
3. Verify that the operating temperature of the switch is in the acceptable range and the power
module has good ventilation.
4. If the issue persists, contact H3C Support.
To replace a power module, see "Installing/removing power modules."
Fan tray failure
CAUTION:
The S6850-56HF, S6850-2C, and S9850-32H switches each have five fan tray slots. The S9850-4C
switch has two fan tray slots. To replace failed fan trays on an operating switch, follow these
guidelines:
• If multiple fan trays fail on an operating S6850-56HF, S6850-2C, or S9850-32H switch, do not
remove the fan trays at the same time. Replace the fan trays one after another and finish
replacing a fan tray within 3 minutes.
• If a fan tray fails on an operating S9850-4C switch, replace the fan tray immediately and keep the
failed fan tray in position before replacement. If two fan trays fail, finish replacing the fan trays
within 1 minute.
Symptom
• The status LED on an LSWM1FANSA or LSWM1FANSAB fan tray is steady orange and the
system outputs alarm messages.
• The status LED on an LSWM1BFANSC or LSWM1BFANSCB fan tray is steady yellow and the
system outputs alarm messages.
Solution
See "Installing/removing fan trays" to replace the fan tray. If the problem persists, contact H3C
Support.
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