Useful Cisco Ios Commands - Power Supply - Cisco Catalyst 9404R Switch Hardware Installation Manual

Useful Cisco IOS Commands - Power Supply

Procedure
Step 1
If the INPUT LED is off, take the following steps:
a) Ensure that the power supply is flush with the back of the chassis by gently inserting it all the way in until
it stops. You should feel the retaining metal latch, on its right side, click into place. The unit should not
be removable without depressing this latch towards it.
Note
b) Unplug the power cord by loosening the cord retainer and physically reinstalling the power supply, plug
in the power cord and tighten the cord retainer around it.
c) If the INPUT LED remains off, there may be a problem with the AC source or the power cable connection.
Also check the circuit breaker of the AC source. Connect the power cord to another power source if one
is available. Verify that the source power is within the acceptable specifications of the power supply.
d) If the LED remains off after you connect the power supply to a new power source, replace the power cord.
e) If the LED still fails to light when the switch is connected to a different power source with a new power
cord, the power supply is probably faulty. You may need to replace the power supply.
Step 2 The OUTPUT LED should be solid green for normal operation. Blinking green indicates that the unit is asleep
in standby mode.
Step 3
If the FAIL LED is red, take the following steps:
a) Remove the power supply from the bay and visually inspect the rear of the power supply module connector.
If there is no damage, try installing it in another empty power supply bay, if available. Do not touch the
back of the power supply module during this inspection. If the OUTPUT LED turns green, the problem
may lie with the first power supply bay and not the power supply module. Call TAC for further instructions.
b) If a second power supply is available, install it in the second power supply bay.
c) Check that the INPUT LED is on for the additional power supply. Check that the FAIL LED is off.
d) If the LEDs are not on, repeat the previous procedure to troubleshoot the second power supply
What to do next
If you are unable to resolve the problem, or if you determine that either a power supply or backplane connector
is faulty, contact Cisco TAC for instructions.
Useful Cisco IOS Commands - Power Supply
You may use the following Cisco IOS commands in the priviledged EXEC mode, to monitor the status, load,
and activity of a power supply module.
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Cisco Catalyst 9400 Series Switches Hardware Installation Guide
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You should be unable to remove the power supply from the system when the power cord is
fully inserted and installed with the cord retainer.
Switch# show power detail
If FAIL LED is red, the show power command output reports the power supply module as faulty.
Switch# show idprom power-supply slot-number
Switch# show module
Troubleshooting