IBM 865951Y Hardware Maintenance Manual - Page 150

System board illustration, System board LEDs

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System board illustration The following illustrations show some of the system board components. Refer to the label inside the system cover for detailed information. System board LEDs: 1 Microprocessor 1 error LED (CR1) 2 Microprocessor 2 error LED (CR5) 3 Integrated voltage regulator error LED (CR4) 4 Voltage regulator module (VRM) error LED (CR12) 5 Service Processor error LED (CR49) 6 DIMM 1 error LED (CR13) 7 DIMM 2 error LED (CR14) 8 DIMM 3 error LED (CR21) 9 DIMM 4 error LED (CR22) 1 System-management interrupt (SMI) LED (CR29) 11 Non-maskable interrupt (NMI) error LED (CR28) 12 PCI bus 2 error LED (CR27) 13 PCI bus 1 error LED (CR26) 14 Reserved (CR25) 15 DASD error LED (CR24) 16 Temperature error LED (CR23) 17 Fan 1 (DASD) error LED (CR15) 18 Fan 2 (rear) error LED (CR16) 19 Reserved (CR17) 2 Reserved (CR18) 21 Power supply 1 error LED (CR19) 22 Power supply 2 error LED (CR20) 142 Netfinity Server HMM

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System board illustration
The following illustrations show some of the system board
components.
Refer to the label inside the system cover for
detailed information.
System board LEDs:
±1²
Microprocessor 1 error LED (CR1)
±2²
Microprocessor 2 error LED (CR5)
±3²
Integrated voltage regulator error LED (CR4)
±4²
Voltage regulator module (VRM) error LED (CR12)
±5²
Service Processor error LED (CR49)
±6²
DIMM 1 error LED (CR13)
±7²
DIMM 2 error LED (CR14)
±8²
DIMM 3 error LED (CR21)
±9²
DIMM 4 error LED (CR22)
±1³²
System-management interrupt (SMI) LED (CR29)
±11²
Non-maskable interrupt (NMI) error LED (CR28)
±12²
PCI bus 2 error LED (CR27)
±13²
PCI bus 1 error LED (CR26)
±14²
Reserved (CR25)
±15²
DASD error LED (CR24)
±16²
Temperature error LED (CR23)
±17²
Fan 1 (DASD) error LED (CR15)
±18²
Fan 2 (rear) error LED (CR16)
±19²
Reserved (CR17)
±2³²
Reserved (CR18)
±21²
Power supply 1 error LED (CR19)
±22²
Power supply 2 error LED (CR20)
142
Netfinity Server HMM