Also enclosed the PS output for the Cabinet and it shows Warning/Fault on I/O Chassis 0 

T - Cabinet 
S - System Backplane 
G - MP (Core I/O) 
P - IO Chassis 
C - Cell 
Select Device: T 

HW status for rp8420 cabinet : FAILURE DETECTED 

Master/Slave failover is Disabled 
Power switch is on 
Right Door is closed 
Top Door is closed 
Left Door is closed 

Total Power Available 5000 VA 
Total Power Needed 3532 VA 
Power Redundancy : redundant 
Power Viability : viable 

Power Status 
---------------+-----+-------+-------+-----------+ 
| | | | | 
| Sys | | IO | Bulk Pwr | 
|Bkpln| Cells |Chassis| Supplies | 
| |0 1 2 3| 0 1 |0 1 2 3 4 5| 
---------------+-----+-------+-------+-----------+ 
Populated | * |* * * *| * * |* * * * * | 
Enabled | * |* * * *| |* * * * * | 
Power OK | * |* * * *| |* * * * * | 
Warning/Fault | | | * | | <---------------------------------------Chassis 0 
Attention LED | | | | | 

AC Line status: 
Line A0 Present 
Line B0 Present 
Line A1 Present 
Line B1 Present 

-- Press <CR> to continue, or 'Q' to Quit -- 

Front Fan Speed : normal 
Rear Fan speed : normal 
I/O Bay Fan Speed : normal 
Temperature state : normal 
Main Fan Redundancy : redundant 
I/O Fan Redundancy : redundant 
Overtemp Shutdown Enabled 

| BPS | PCI | 
| Fans | Fans | 
| 0 1 2 3 4 5 | 0 1 2 3 4 5 | 
+-----------+-------------+-------------+ 
Populated | * * * * * | * * * * * * | 
Failing | | | 
Failed | | | 

| Standby/Main Fans | 
| 1 1 1 1 1 1 1 1 1 1 2 | 
| 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 | 
+-----------+-------------------------------------------+ 
Populated | * * * * * * * * * * * * * * * * * * * * * | 
Failing | | 
Failed | | 

| Cell Fans | 
| CPU C | 
| 0 1 2 3 C | 
+-----------+------------+ 
Cell 0 | | 
Populated | * * * * * | 
Failing | | 
Failed | | 
Cell 1 | | 
Populated | * * * * * | 
Failing | | 
Failed | | 
Cell 2 | | 
Populated | * * * * * | 
Failing | | 
Failed | | 
Cell 3 | | 
Populated | * * * * * | 
Failing | | 
Failed | | 

[uninitialized] MP:CM>