How to replace the Power Supply in Cisco switch 4948

Asset ID:	1-71-1990176.1
Update Date:	2018-02-14
Keywords:

Solution Type Technical Instruction Sure

Solution 1990176.1 : How to replace the Power Supply in Cisco switch 4948

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In this Document

Goal

Solution

References

Created from <SR 3-10224142467>

Applies to:

Exadata X4-2 Hardware - Version All Versions and later
Oracle SuperCluster M6-32 Hardware - Version All Versions and later
Oracle Exalogic Elastic Cloud X2-2 Hardware - Version X2 to X5 [Release X2 to X5]
Zero Data Loss Recovery Appliance X4 Hardware - Version All Versions and later
Zero Data Loss Recovery Appliance X5 Hardware - Version All Versions and later
Information in this document applies to any platform.

Goal

This document applies to ALL Engineered systems that include Cisco Catalyst 4948 or 4948E-F ethernet switches.

Replacing the power supply as it shows to be bad/off in "show environment" output.

( here as an example of Cisco switch 'C4948E-F'. The switch C4948 has a similar output )

exa41sw-adm01>show environment
no temperature alarms

Module Sensor Temperature Status
------+--------------------------+--------------------+------------
1 air inlet 40C (58C,73C,76C) ok
1 air outlet 43C (65C,81C,84C) ok

Power Fan Inline
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------- -------
PS1 PWR-C49E-300AC-F AC 300W bad/off bad/off n.a. <<------------------- PS1 shows to be bad/off
PS2 PWR-C49E-300AC-F AC 300W good good n.a.

Power supplies needed by system : 1
Power supplies currently available : 1

Chassis Type : WS-C4948E-F

Power consumed by backplane : 0 Watts

Switch Bandwidth Utilization : 0%

Supervisor Led Color : Orange

Module 1 Status Led Color : Orange

Fantray : Good
Fantray removal timeout : 90
...........

Solution

Replacing the bad power supply.

The power supplies are hot swappable.

Cisco 4948 switch has a switch button on each power supply for power on/off individually.

So no need to power off whole Cisco switch during power supply replacement.

Here is details for power supply replacement on Cisco 4948 switch:

1. power switch off on the power supply you'd like to replace
2. power cord eject
3. replace the power supply
4. power code insert
5. power switch on

Regarding operations about step 3, here is the doc released by Cisco for your reference:

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4900/4948E/installation/guide/4948E_ins/04frus.html

References

<NOTE:1922959.1> - One Of The Power Supplies On The Cisco (admin) Switch Shows Two Red Lights And Needs Repair

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