Sony PCV-LX910 System Reference Manual - Page 65
Fan (CPU FAN, PWR FAN) Connectors
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System Board 51 Fan (CPU FAN, PWR FAN) Connectors The CPU Fan connector is a 1 x 3-pin straight header connector that controls the CPU cooling fan. The PWR FAN connector is a 2 x 3-pin connector that controls the power supply cooling fan. It connects to P3 from the power supply. 1 3 PWR FAN CPU Fan 1 O1 2 N 3 CPU Fan connector Pin Signal Name 1 GND 2 FAN_CTRL (+12 V) 3 FAN_SEN PWR FAN connector Pin Signal Name 1 Ground 2 Fan C* 3 3.3 V sense * Power supply provides 12 V to this pin when system is in Power On mode (for fastest fan speed), and 6 V when system is in Suspend mode (to reduce fan noise).
System Board
51
Fan (CPU FAN, PWR FAN) Connectors
The CPU Fan connector is a 1 x 3-pin straight header connector that controls the
CPU cooling fan.
The PWR FAN connector is a 2 x 3-pin connector that controls the power supply
cooling fan. It connects to P3 from the power supply.
CPU Fan connector
Pin
Signal Name
1
GND
2
FAN_CTRL (+12 V)
3
FAN_SEN
PWR FAN connector
Pin
Signal Name
1
Ground
2
Fan C
*
*
Power supply provides 12 V to this pin when system is in Power On mode (for fastest fan speed), and 6 V
when system is in Suspend mode (to reduce fan noise).
3
3.3 V sense
O
N
12
1
3
PWR FAN
CPU Fan
1
3