Samsung P560, Service Manual, Page: 174 / 393

4-24
4. Troubleshooting
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4-6. CPU Fan Control
Checking the Work of FAN
One can turn the fan on & off and check the fan’s operational conditions without system disassembly.
Pic (1) Fan off status Pic (2) Fan on status
- SAFC's default setting is "Fan off" or "Minimum Fan Speed".
- Press "ON" in "ON/OFF Control" Fan is turned on to maximum fan speed.
- Press "OFF" in "ON/OFF Control" Fan returns to default setting.
Checking the Normal Working State of FAN Control
(1) Normal mode
CPU fan control
CPU
Stage
Address
RPM
EMC2102
Count(HEX)
SPEED (Hexa)
Ⅰstep
OFF FF 0 FF
Low
36 2276 36
Middle 1 32 2458 32
Middle 2
2E 2671 2E
Middle 3 2B 2858 2B
Middle 4
28 3072 28
High 26 3234 26
Ⅱstep
Ⅲstep
OS Throttling
ACPI Notify
Dos Throttling
Shutdown