Lenovo NeXtScale n1200 Installation And Service Manual page 113

Automatically notify support
User Response
1. No user action needed.
• 70 : PS4_FANFault
Power supply 4 fan has fail condition.
Severity
Critical
Serviceable
Automatically notify support
User Response
Complete the following steps:
1. Check PSU power cord, reseat PSU.
2. If PSU Fan Fault is still asserted, replace PSU.
• 71 : PS4_Thermal_Fault
Power supply fan has thermal related fault, possibly over-heated condition.
Severity
Critical
Serviceable
Automatically notify support
User Response
Complete the following steps:
1. Check PSU power cord, reseat PSU.
2. If PSU Thermal Fault is still asserted, replace PSU.
• 72 : PS4_12V_OV_Fault
Power supply is having 12V power Over-Voltage condition
Severity
Critical
Serviceable
Automatically notify support
User Response
Complete the following steps:
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 OV Fault is still asserted, replace PSU.
• 73 : PS4_12V_UV_Fault
Power supply is having 12V power Under-Voltage condition.
Severity
Critical
Serviceable
Automatically notify support
Appendix A. Fan power control (FPC) error codes
101