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1. Check if PSU power cord is plugged.
2. Reseat components in the following order, continue down the list if OV fault is not de-asserted:
Power supply, Mid-plane, All Nodes.
3. If PSU 12V AUX Fault is still asserted, replace PSU.
• 75 : PS4_EPOW_Assert
AC power provided to the indicated power supply is lost
Severity
Non-Recoverable
Serviceable
Automatically notify support
User Action
Complete the following steps:
1. Make sure PSU power cord is properly plugged in. Check if AC power is stable.
• 76 : PS4_Throttle_Assert
Power supply is having over-current condition.
Severity
Critical
Serviceable
Automatically notify support
User Action
Complete the following steps:
1. Make sure PSU power cord is properly plugged in.
2. Un-install node one by one to identify if any of the node is causing the OC condition.
3. If Throttle is still asserted when all nodes are removed from chassis, do the following: Unplug
power supplies power cord and removed all power supplies from chassis. Plug power cord back
into power supply while power supply is outside of chassis. If PSU orange LED is turned off
under this circumstance, replace mid-plane. If LED is still lit, replace PSU.
• 77 : PS4_AC_Lo_Line
Power supply is connected to 110v AC.
Severity
Info
Serviceable
Automatically notify support
User Action
1. No user action needed.
• 78 : PS4_OT_Warning
Power supply internal temperature has reached warning threshold. Over temperature fault is possibiliy to
occur if condition not relieved.
Severity
.
227
Chapter 5
FPC events
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