Thermal & Fan Controller - EUROCOM L295U Series Service Manual

Thermal & Fan Controller
+3V [3,4,5,6,11,12,13,14,15,17,19,20,21,22,23,24,26,27,28]
+5V [4,11,12,13,14,17,19,21,22,23,24,25,26,27,28]
+12V [12,13,17,22,24,25,26,27,28]
SB3V
+3V CT72
+
10u/10V_1206
R133
[3,14] THERMTRIP#
10K
Q9
E
B
C
2N3906
Z1601
R134 0 Z1602
[4,10,14,22] SMBDATA
R143 0 Z1603
[4,10,14,22] SMBCLK
[3] THERMDA
C103
3300p
[3] THERMDC
Z1618
C C309
B
E 3300p
Q48
2N3904
Z1619
R140 10K Z1604
SB3V
R142 10K Z1605
+5V
CA65
0.1u
CN4
1
Z1615
2
Z1616
3
4
VIDEO-R
5
VIDEO-L
6
7
8
TV-TUNER
CA119
0.1u
U30
14 Z1606 R135 0
SMBALERT# [14]
2.5VIN
6 Z1607 R454 10K FANIN1
TACH1
9
E1
R455
16
SMBDATA
4.7K
1
SMBCLK
13
D1+
15 PWMOUT1
PWM1
12 R468 10K
D1- +3V
11
D2+
7 Z1608 R466 10K_R FANIN2
TACH2
R467
4.7K_R
10
D2-
8
PWM3
4 5 PWMOUT2
TACH3 PWM2
ADT7460
R345 0
R346 0
[14]
U21
4 5
3 6
USB0- [15]
2 7
USB0+ [15]
1 8
[24]
[24]
FRC-1394-201_R
+12V
+3V
R155 4.7K_R
Q12
Q11 2SB1198K_R
2SB1198K_R E E
R157
Z1611 Z1609 B B
R163
C C
4.7K
1K_1206_R
Q13
PWMOUT2 G
2N7002_R
+
C138
100u/16V_6.3*7_R
+12V
+3V
R136 4.7K
Q8
Q40 2SB1198K_R
2SB1198K E E
R139
Z1612 Z1610 B B
R141
C C
4.7K 1K_1206
Q10
PWMOUT1 G 2N7002
+
C101
100u/16V_6.3*7
PWMOUT2
C Q49
R601 10K B
GPO27
E 2N3904_R
PWMOUT1
C
Z1617 B Q50
E
2N3904
Thermal & Fan Controller (71-P2970-002A) B - 17
Schematic Diagrams
Sheet 16 of 28
Thermal & Fan
Controller
+12V
D22
R165
1N4148_R 10K_R
CN11
FANIN2
3
Z1613
2
1
MOLEX 5045-03A_R
SYSTEM FAN
+12V
D19 R137
1N4148
10K
CN9
FANIN1
3
Z1614
2
1
MOLEX 5045-03A
CPU FAN