Lenovo NeXtScale n1200 Installation And Service Manual page 100

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.
• 15 : FAN_Tach_3B: 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 Response
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.
• 16 : FAN_Tach_4A: 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 Response
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.
• 17 : FAN_Tach_4B: 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 Response
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.
• 18 : FAN_Tach_5A: Fan sensor, failure event was asserted, reading value : %RPM (Threshold :
1472RPM)
Asserted when Fan tach reading is below threshold RPM.
Severity
Critical
Serviceable
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Lenovo NeXtScale n1200 Enclosure Installation and Service Guide