Thermal Status Report And Fan Control - Compal JHL90 Service Manual

JHL90 Service Manual
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Battery in critical low
Battery in low state
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Battery pack plugin
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Docking in
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Modem ringin
PME signal active

12.11 Thermal Status Report and Fan Control

EC will control fan on/off function according to the CPU temperature (EC will
get temperature from thermal sensor through SMBus). Fan will be off when
temperature below speed 1 speed down temperature, and if temperature over EC
Shutoff temperature five times, EC will auto turn off system to protect CPU. The
following table is detailed settings.
12.11.1.1 Fan control by Voltage
• EC will output voltage to control fan directly. (DTS/Tdiode Thermal Policy)
Speed stage
Speed 0
Speed 1
Speed 2
Speed 3
Speed 4
Speed 5
Speed 6
(Throttling start)
2-34
SMI - - A1h
- - A2h
SMI - - A6h
SMI - - Ach
SMI SMI - B2h
SMI - - B3h
SMI - - B4h
SMI - - B5h
- - B6h
SMI - - B8h
SMI - - B9h
SMI - - Bah
SMI - - C7h
SMI - - C8h
SMI - - Cah
SMI SMI - Ceh
Speed down
temperature (°C)
0
45
53
58
63
68
95
SCI - -
SMI - -
SCI - -
SCI - -
SCI SWI -
SCI - -
- - -
SBS - -
SBS - -
SCI - -
- - -
SCI SWI -
SBS - -
SBS - -
- SWI -
SCI SWI -
Speed up
temperature (°C)
50
55
60
65
70
100
105 (DTS)
(Shutdown temp)
- 11h -
- 12h -
- 16h -
- 1ch -
- 22h -
- 23h -
- 24h -
- 25h -
- 25h -
- 28h -
- 29h -
- 2ah -
- 37h -
- 38h -
- 3ah 04
- 3eh 02
Fan 1
RPM
0
2500
3000
3400
3800
4200
4200