Panasonic SA-AK250PL Service Manual page 69

SCHEMATIC DIAGRAM - 5
MAIN CIRCUIT
: +B SIGNAL LINE
TO MAIN SECTION (3/4)
C10
C11
C12
C13
C14
C15
C16
W257
B0JAMK000015
C17
W672
0
D2941
W2
REXV0095
D2937-D2941
D2940
B0EAKM000117
D2939
D2938
D2937
1 2
CN2805
15 16 17
: MAIN SIGNAL LINE : AUX SIGNAL LINE
TO MAIN SECTION (2/4)
R2886
1M
R2883 C2883
330k 22p
R2882
10M
C2882
X2801 18p
H0A327200097
W604
0
W611
Q2936
0
W615
Q2937
0
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
W623 0
W595
0
+3.3V
12 3.3V
-9V
W618
11 -VCC
10
XM5.3V
0 W576
MOT_12V
W668 9 MOT_12V
STANDBY
0
8
STANDBY
0
IDCDET
7 /DCDET
CD_3.3V (cater)
6 3.3V
+5V
5 +5V
PCONT
4 PCONT
U_GND
3 UP_GND
C2753 0.1u
2 FL_GND
P_GND
1 P-GND
R2852 22k VCC
R2881 220
D2803
C2853
X2802 B0ACCK000005
0.1u
H2B100500004
R2851
C2854
47k
1 3
470
W594
A_GND lRESET
1 /RESET
CNVSS W605 0
2
0 2 CNVSS
VCC
VREF+
3 VCC
C2803
XM_MUTE(BUSY)
1u
4 BUSY
C2802
U_GND
3.3
5 EFM
USB_RST-UART_CLK
CLK
6
USB_SCL-IPOD_RXD
Q2803
7 RXD
USB_SDA-IPOD_TXD
B1GBCFJJ0051
8 TXD
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
69
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-AK250PL MAIN CIRCUIT
3/4 4/4
24 25 26
SA-AK250PL
I
J
K
L
M
N
O
P
27 28