Symptom

"show power" output displays one of the power supplies as "faulty" In "show platform hardware chassis power-supply detail al" output, affected power supply shows "No faults". Physical inspection of power supply shows all LED are green and operational. PS1 C9400-PWR-3200AC AC 3200 W active good good good good PS2 C9400-PWR-3200AC AC 3200 W active good good good good PS3 C9400-PWR-3200AC AC 3200 W standby n.a. n.a. n.a. n.a. PS4 C9400-PWR-3200AC AC n.a. faulty n.a. n.a. n.a. n.a. ! C9400#show platform hardware chassis power-supply detail al Slot Reg Reg Value Description --------- --------- --------------- --------------------------------------------------------------------- PS1 0xE7 0x00 0x00 0x00 No Faults PS2 0xE7 0x00 0x00 0x00 No Faults PS3 0xE7 0x00 0x00 0x00 No Faults PS4 0xE7 0x00 0x00 0x00 No Faults

Conditions

The issue can be seen due to small glitch in power line or due to quick on/off of power supply switch. This is a rare timing issue.

Workaround

>Physical re-seat of affected power supply restores it.

Further Problem Description