
Baseboard Connectors
007-4276-001
129
The baseboard only supports monitoring a total of eight tachometer fan inputs. The front
panel connector provides connections to all eight tachometer fan inputs. The tachometer
signals from these four processor fan connectors are connected to the same tachometer
fan signals FAN_TACH(4), FAN_TACH(5), FAN_TACH(6), and FAN_TACH(7)
provided on the front panel connector J9E3. Therefore, make sure that only one
connection is used at any given time.
Note:
The type of connector (in, out, in/out, power, ground) indicated in the following
tables is described from the perspective of the baseboard.
Table A-31 describes the processor fan connector #1 (J3C1).
Table A-32 describes the processor fan connector #2 (J3A1).
Table A-31
Processor Fan Connector #1 (J3C1)
Pin
Signal
Type
Description
1
Ground
power
GROUND is the power supply ground
2
12V
power
Power supply 12 V
3
Fan Tach
Out
FAN_TACH signal is connected to the BMC to monitor the
FAN speed
Table A-32
Processor Fan Connector #2 (J3A1)
Pin
Signal
Type
Description
1
Ground
power
GROUND is the power supply ground
2
12V
power
Power supply 12 V
3
Fan Tach
Out
FAN_TACH signal is connected to the BMC to monitor the
FAN speed
Summary of Contents for 1450
Page 1: ...SGI 1450 Server Maintenance Guide Document Number 007 4276 001 ...
Page 3: ...007 4276 001 iii Record of Revision Version Description 001 June 2000 Initial Rev ...
Page 4: ......
Page 10: ......
Page 64: ......
Page 90: ......
Page 102: ......
Page 156: ......
Page 158: ......
Page 162: ......