2 speaker/fan control/rtc reference, 1 speaker out, 2 fan control – IEI Integration ICE-DB-9S User Manual
Page 97: Figure 4-43: speaker out reference schematic, Figure 4-44: fan reference schematic, Buzzer, Cpu fan w/fan control system fan w/fan control, System fan2 w/fan control from com module
ICE Module
Page 84
4.14.2 Speaker/FAN Control/RTC Reference
4.14.2.1 Speaker Out
Buzzer
R325
2.7K_4
1
2
Q14
2N3904_SOT23
E
C
B
R321
33_4
+V5S_BUZZER
+V5
SP1
SATG1205NP45_DIP12X10_6.5
1
2
SPKR
3,18,21
C246
0.1U_4_Y_16V
Figure 4-43: Speaker Out Reference Schematic
4.14.2.2 FAN Control
C264
0.1U_4_Y_16V
+V12
Q13
FDN335N
G
D
S
CPU FAN W/FAN Control
SYSTEM FAN W/FAN Control
Q22
2N3906_SOT23_3
E
C
B
C240
0.1U_4_Y_16V
+V12
+V12
FAN_IO2
13
G
N
D
V
C
C
D
E
T
FAN2
1
2
3
FAN_PWM2
13
C244
0.1U_4_Y_16V
R319
10K_4
R317
4.7K
+V12
R318
1K_4
+V5
FAN_IO2
R320
1K_4
C263
0.1U_4_Y_16V
D34
1N4148
CONTROL
SENSE
+12V
GND
FAN1
CPUFAN_4_2.54
2
1
3
4
C268
10UF_1210_16V
1
2
C245
10UF_1210_16V
1
2
R402
1K_4
R374
4.7K
FAN_IO1
13
FAN_PWM1
13
FAN_PWM1
R313
4.7K
R315
10K_4
R314
1K_4
+V5
FAN_IO1
R316
1K_4
D33
1N4148
+V12
Q23
2N3906_SOT23_3
E
C
B
Q18
FDN335N
G
D
S
SYSTEM FAN2 W/FAN Control from COM module
FAN_TACHOIN 3
G
N
D
V
C
C
D
E
T
FAN3
1
2
3
FAN_PWMOUT
3
C261
0.1U_4_Y_16V
R407
4.7K
R408
10K_4
R409
1K_4
+V5
R410
1K_4
D35
1N4148
C262
10UF_1210_16V
1
2
R412
1K_4
R411
4.7K
+V12
Figure 4-44: FAN Reference Schematic