Lenovo NeXtScale n1200 Installation And Service Manual page 113

1. Make sure that there is no obstrcution blocking
power supplies and system fans' air way.
2. Make sure that power supplies does not have any
fault condition.
3. Make sure that room temperature is maintained at
required level.
4. Make sure that all fan modules are installed and
operating properly.
5. Make sure that power supplies fans are running
with higher speed than system fan.
6. If condition presists after above inspection, reseat
power supply.
7. If OT warning continues to present after power
supply reseat, replace power supply.
59 PS2_No_Present
Explanation: Power supply was removed from
chassis.
Severity: Info
User response:
1. No user action needed.
60 PS3_FANFault
Explanation: Power supply 3 fan has fail condition.
Severity: Error
User response: Complete the following steps:
1. Check PSU power cord, reseat PSU.
2. If PSU Fan Fault is still asserted, replace PSU.
61 PS3_Thermal_Fault
Explanation: Power supply fan has thermal related
fault, possibly over-heated condition.
Severity: Error
User response: Complete the following steps:
1. Check PSU power cord, reseat PSU.
If PSU Thermal Fault is still asserted, replace PSU.
2.
62 PS3_12V_OV_Fault
Explanation: Power supply is having 12V power
Over-Voltage condition
Severity: Error
User response: Complete the following steps:
Check if PSU power cord is plugged.
1.
2. Reseat components in the following order, continue
down the list if OV fault is not de-asserted: Power
supply, Mid-plane, All Nodes.
If PSU 12V OV Fault is still asserted, replace PSU.
3.
63 PS3_12V_UV_Fault
Explanation: Power supply is having 12V power
Under-Voltage condition.
Severity: Error
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 UV Fault is still asserted, replace PSU.
64 PS3_12V_AUX_Fault
Explanation: Power supply is having faulty condition
in providing 12V AUX power.
Severity: Error
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 AUX Fault is still asserted, replace PSU.
65 PS3_EPOW_Assert
Explanation: AC power provided to the indicated
power supply is lost
Severity: Error
User response: Complete the following steps:
1. Make sure PSU power cord is properly plugged in.
Check if AC power is stable.
66 PS3_Throttle_Assert
Explanation: Power supply is having over-current
condition.
Severity: Error
User response: 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.
Appendix A. Fan power control (FPC) error codes
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