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SCHEMATIC DIAGRAM - 5
MAIN CIRCUIT
: +B SIGNAL LINE
TO MAIN SECTION (3/4)
C10
C11
C12
C13
C14
C15
C16
C17
W672
0
D2937-D2939
B0EAKM000117
1
2
CN2805
15
16
17
: MAIN SIGNAL LINE
: AUX SIGNAL LINE
: MIC SIGNAL LINE
TO MAIN SECTION (2/4)
R2886
1M
R2883 C2883
330k
22p
R2882
10M
X2801
C2882
18p
H0A327200097
W604
0
W648
W611
Q2936
0
0
W615
0
Q2937
Q2936
30
29
28 27
26
25 24
23
22
21 20
19
18
3
4
5
6
7
8 9
10
11 12
13 14
15
B1ACKD000006
CD SUPPLY
CONTROL SWITCH
Q2937
B1GBCFJJ0051
CHANGER PLUNGER
ON/OFF SWITCH
TO CRSI (CN1)
TO
PANEL CIRCUIT (CN6601)
IN SCHEMATIC DIAGRAM-6
18
19
20
IDCDET
FAN
MOT_12V
R2943
10K
R2945
10k
Q2943
3
2
1
R2946
56k
U_GND
W595
W623
0
+3.3V
0
12
3.3V
-9V
11
-VCC
W618
W576
0
10
0
XM5.3V
MOT_12V
9
MOT_12V
W668
STANDBY
8
STANDBY
0
IDCDET
7
/DCDET
CD_3.3V
(cater)
6
3.3V
+5V
5
+5V
PCONT
4
PCONT
U_GND
3
UP_GND
W631
W666
C2753
0.1u
0
0
2
FL_GND
P_GND
1
P-GND
R2852
22k
VCC
lRESET
1
/RESET
CNVSS
W605
0
2
CNVSS
VCC
R2881
220
3
VCC
D2803
XM_MUTE(BUSY)
C2853
X2802
B0ACCK000005
4
BUSY
0.1u
U_GND
H2B100500004
5
EFM
R2851
USB_RST
C2854
47k
CLK
6
1
3
220
W594
USB_SCL
7
RXD
0
A_GND
USB_SDA
TXD
8
2
VREF+
C2803
1u
C2802
3.3
Q2803
B1GBCFJJ0051
RESET (MICRO-P) SWITCH
17
16
15
14
13
12 11
10
9
8
7
6
5
4
3
2
1
CN2806
21
22
23
71
0.1u
C2940
Q2942
R2940
B1ACKD000006
820k
FAN MOTOR ON/OFF SWITCH
Q2942
1
+
TO FAN
2 -
CN2810
R2942
5.6K
Q2943
B1ABCF000176
R2939
FAN SUPPLY
Q2949
CONTROL SWITCH
R2949
47K
47K
R2948
C2948
Q2948,Q2949
10V220u
100
Q2948
B1ABCF000176
DC DETECT SWITCH
R2947
27
TO
POWER
CIRCUIT
(CN5103)
IN SCHEMATIC
DIAGRAM-9
CN2808
SOFTWARE
WRITING
1/4
2/4
SA-AK750PL MAIN CIRCUIT
3/4
4/4
24
25
26
SA-AK750PL
I
J
K
L
M
N
O
P
27
28
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