Lenovo ThinkSystem SD650 Manual page 219

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Critical
Serviceable
Automatically notify support
User Action
Complete the following steps:
1. If error is not de-asserted after several minutes, check all ten fans are installed.
2. Reseat fan module one or two times. If error still persist, replace fan module.
• 21 : FAN_Tach_9B: Fan sensor, failure event was asserted, reading value : %RPM (Threshold :
1472RPM)
Asserted when Fan tach reading is below threshold RPM.
Severity
Critical
Serviceable
Automatically notify support
User Action
Complete the following steps:
1. If error is not de-asserted after several minutes, check all ten fans are installed.
2. Reseat fan module one or two times. If error still persist, replace fan module.
• 22 : FAN_Tach_10A: Fan sensor, failure event was asserted, reading value : %RPM (Threshold :
1472RPM)
Asserted when Fan tach reading is below threshold RPM.
Severity
Critical
Serviceable
Automatically notify support
User Action
Complete the following steps:
1. If error is not de-asserted after several minutes, check all ten fans are installed.
2. Reseat fan module one or two times. If error still persist, replace fan module.
• 23 : FAN_Tach_10B: Fan sensor, failure event was asserted, reading value : %RPM (Threshold :
1472RPM)
Asserted when Fan tach reading is below threshold RPM.
Severity
Critical
Serviceable
Automatically notify support
User Action
Complete the following steps:
1. If error is not de-asserted after several minutes, check all ten fans are installed.
.
215
Chapter 5
FPC events

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