Main, Panel & Mic Circuit - Panasonic SA-PT850EE Service Manual

SA-PT850EE
20.2. Main, Panel & Mic Circuit
1 2 3
SCHEMATIC DIAGRAM - 6
A
:-B SIGNAL LINE
B
MAIN CIRCUIT
:+B SIGNAL LINE
CN2002
C2960 1
TUNERGND 10
B
T+9V 9
W2303
RDS DETECT 8
C2261 0 R2260 1K
TUNER RCH 7
TO TUNER PACK
TUNER DO/ST 6
R2160
C2161
(J3CBBB000001) TUNER LCH 5
0
1K
TUNER SD 4
TUNER DI 3
TUNER CLK 2
PORT_SEL 1
C
CHASSIS GND
D
E
F
16 15 14 13 12 11
IC2801
C9ZB00000461
VIDEO BUFFER
G
17 18 19 20 21 22
C2838 C2837
0.1
0.1
H
4 5 6
:MAIN SIGNAL LINE :FM SIGNAL LINE :DVD VIDEO SIGNAL LINE
TU+9V
0
TUN-RCH
TUN_DO
TUN-LCH
TUN_SD
TUN_DI
TUN_CLK
AGND
-7V
AGND
VIDEO_+5V
10 9 8 7 6 5 4 3 2 1
IC2801
Q2801
B1GBCFJN0033
MUTING
23 24 25 26 27 28 29 30 31 32
TO MAIN
SECTION (3/4)
7 8
W2540
0
FL
C2177 R2196
50V1 2.2K
3
Q2201
B1GDCFGA0018 2
MUTING CONTROL
R2271
1
56K
Q2101
B1GFGCAA0001
MUTING
C2277 R2296
50V1
FR 2.2K
-7V
W2593
0
D2810
B0JCAE000001
Q2805
B1GBCFJN0033
INVERTER
Q2804
B1GBCFJN0033
MUTING
RGB_H
6 IN1 SW 1
W2619 W2617
0 0
GND OUT
5 2
W2618 W2616
0 0
VIDEO_+5V
4 IN2 VCC 3
W2573
0
IC2802
C1AB00001731
VIDEO BUFFER
88
9 10 11
D2752
B0ACCK000005
6dB Clip
R2762
10K
R2763
10K
3dB Clip
D2753
IC2751
B0ACCK000005
C0ABBB000350
OP AMP
R2176
R2175 1.2K
22K
C2194
C2178
C2179
1 R2191
3.9K
150P
100P C2180
4
0.1
5 6 7 8
5
IC2102
C0AABB000125
6
HEADPHONE AMP
4 3 2 1
C2278 C2279
R2291 100P 150P
3.9K
C2294
1
W2632
R2275 R2276
0
1.2K 22K
12 13 14
B16
R2752
10K
C2754
R2758
100P
22K
R2760
820K
8 7 6 5
+VCC
IC2751
-VCC
1 2 3 4
R2759
22K
R2761
820K
R2755 R2756
4.7K 100
C2755
100P
R2177 R2179 C2196 R2182
22 22 16V100 10
R2178 R2180
22 22
Q2103
3 4
2 5
1 6
R2278 R2280
22 22
C2296 R2282
R2277 R2279 16V100 10
22 22
Q2103
B1GFGCAA0001
MUTING
TO MAIN
SECTION (2/4)
1/4 2/4
SA-PT850EE MAIN CIRCUIT
3/4 4/4