Chapter 4 Troubleshooting the Installation
Troubleshooting the Cooling Subsystem
Step 2 Eject and reseat the fan tray making sure the captive screws are securely tightened to a torque of 10
If the fan tray still does not function, go to Step 3.
Step 3 Check for +12 VDC power by looking at the LED indicators on each power module:
•If the Pwr OK indicator is on and the Fault indicator is off on each power module, it indicates that the fan tray is receiving +12 VDC:
–If the fan tray is still not functioning, there could be a problem with the fan tray controller card or an undetected problem in the fan tray cable. Replace the fan tray.
–If the new fan tray does not function, contact a Cisco customer service representative for assistance.
•If the Fault indicator is on, the power supply is faulty. Replace the power supply.
•If the Temp and Fault indicators are on, an
–Verify that the power supply fan is operating properly.
–If the fan is not operating, replace the power supply.
–Contact your Cisco representative if replacing the power supply does not fix the problem.
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