How do I cure - low inline power on 2112 PoE port ?

I have a 2112 WLC with LAP connected directly to PoE port 8.
Controller Monitor reports :
AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:3a:99:67:53:50 Cause=Low in-line power
THe Advanced tab on the AP configuration does not show any PoE power state.
How can I run this AP on tthe controller port?
WLC is AIR-WLC2112-K9
Product Version.................................. 6.0.199.4
RTOS Version..................................... 6.0.199.4
Bootloader Version............................... 4.0.191.0
Emergency Image Version..................... 6.0.199.4
Port Summary
           STP   Admin   Physical   Physical   Link   Link
Pr  Type   Stat   Mode     Mode      Status   Status  Trap     POE
1  Normal  Forw Enable  Auto       100 Full   Up     Enable  N/A
2  Normal  Disa Enable  Auto       Auto       Down   Enable  N/A
3  Normal  Forw Enable  Auto       100 Full   Up     Enable  N/A
4  Normal  Disa Enable  Auto       Auto       Down   Enable  N/A
5  Normal  Disa Enable  Auto       Auto       Down   Enable  N/A
6  Normal  Disa Enable  Auto       Auto       Down   Enable  N/A
7  Normal  Disa Enable  Auto       Auto       Down   Enable  Enable  (Power Off)
8  Normal  Forw Enable  Auto       100 Full   Up     Enable  Enable  (Power On )
AP Model...... AIR-LAP1131AG-E-K9
AP Image...... C1130-K9W8-M
IOS Version... 12.4(21a)JHB1

Hi,
Set power injector state to 'over-ride' , if we are not able to see this on the AP Advanced.. kindly paste the screenshot here..
Regards
Surendra

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