
Schematic Diagrams
Fan Control and SpeedStep
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  | L91  | FAN_VCC  | 
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  | FCM2012V121  | 
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  | MAIN FAN | 
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  | C833  | +100U/16V DIP  | 
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  | JFAN1  | R409  | 
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24  | R367  | 470  | B  | E  | Q21  | 
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+3V
R410
24.9K H_DPSLP# 
H_DPSLP# 2,36
C
BQ4 E 3904
CPUSTP# 
CPUSTP# 4,15
Diagrams
Sheet 29 of 41
Fan Control &
SpeedStep
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  | L125  | FAN_VCC  | 
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  | +5V  | 
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  | FCM2012V121  | 
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  | DDR FAN | 
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  | JFAN3  | 
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  | VGATE  | 2N7002  | 
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  | D39  | F01J2E  | 
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  | 24,27  | FAN3_SEN  | 2  | 
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  | FAN3_SEN  | 
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  | +3V  | R659  | 
  | 100K  | DDRCON  | 
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24  | R660  | 470  | B  | E  | Q33  | 
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  | 2SC4672  | 
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  | 0.1UF(R)  | 
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S D![]()
+3V
R182  | 
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4.7K  | 
  | U16  | 
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1  | 
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  | IN  | VCC  | 
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36 VR_PWRGD  | VR_PWRGD  | 2  | IN  | 
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  | 3  | GND  | OUT  | 4  | PM_GATEM  | 
TC7S32F
+3VS
B.Schematic
24 PWROK
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+5V  | 1  | 2 FAN_VCC  | |
FCM2012V121  | |||
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SECOND FAN
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  | D41  | F01J2E  | 
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  | 27  | FAN2_SEN  | 2  | |||
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  | FAN2_SEN  | 
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  | +3V  | R661  | 
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24  | R662  | 470  | B  | E  | Q34  | 
  | D42  | 1SS355  | ||||
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  | 0.1UF  | ||||
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  | 2SC4672  | 
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  | C828  | 
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  | 0.1UF(R)  | 
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  | L141  | FAN_VCC  | 
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  | +5V  | 
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  | FCM2012V121  | 
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  | C834  | 10U(0805)  | 
  | MAIN2 FAN | 
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  | D49  | F01J2E FAN4_SEN  | ||
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  | +3V  | R710  | 100K  | |
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  | C835  | ||||
24  | R711  | 470  | B  | E  | Q40  | 
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  | 0.1UF  | ||||
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  | C836  | 
  | 2SD1834  | 
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  | 0.1UF(R)  | 
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  | +3V  | 
  | R183  | 
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  | R444  | 
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  | U15D  | 100K  | 
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  | VR_PWRGD R453  | 
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PWROK R154  | 
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0(R)  | 12  | 11  | 
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  | PM_GATEM  | 13  | 
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  | RESET#  | PWRGD  | 9,15,26  | ||||||||
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  | +1.8VS  | R442  | 10K_1%  | 
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  | 74(A)HC08  | 
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  | R184  | 
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  | VCC  | 
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  | GND  | 100K  | 
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  | C215  | 
  | C214  | 
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  | R755  | 
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  | R443  | 
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  | 0.1UF  | 
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  | 15,28 | PSON#  | 
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37,39  | SUSB-  | 
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  | +3VS  | 
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  | VCC  | 
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  | PWRGD  | 
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  | GND  | 
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  | +3V  | 
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  | 14  | U15A  | 
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  | H8BEEP  | 
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  | 24  | H8BEEP  | 1  | 
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  | H8_BEEP C219  | 1UF  | 
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  | 74(A)HC08  | 15  | PCBEEP | PCBEEP  | C220  | 1UF  | LBP  | 26  | 
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  | SPKROUT  | C218  | 1UF  | 
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U14A  | 14  | 
  | 19  | SPKROUT | 
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2  | 1  | R461  | 1M  | 
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7C587
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74LVC14  | 
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B - 30 Fan Control and SpeedStep