19.2. Main, Panel & Mic Circuit
B
SCHEMATIC DIAGRAM - 5
MAIN CIRCUIT
SA-PT250GCP MAIN CIRCUIT
B16
B1
B6
B7
B8
B11
B12
:+B SIGNAL LINE
:FM SIGNAL LINE
:DVD VIDEO SIGNAL LINE
:MAIN SIGNAL LINE
:-B SIGNAL LINE
1/4
2/4
3/4
4/4
TO MAIN
SECTION (3/4)
TO MAIN
SECTION (2/4)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
100
R2756
R2755
4.7K
0.01
C2753
C2197
0
C2297
0
820K
R2760
R2752
10K
C2754
100P
R2753 4.7K
22K
R2758
R2754
1K
22K
R2759
C2751
1
R2757
47K
R2181 4.7K
W2660
0
R2282
10
4.7K
R2281
2.2K
2.2K
R2198
R2298
C2181
1000P
22
R2277
22
R2278
22
R2280
22
R2279
C2281
1000P
R2182
10
C2196
16V100
C2296
16V100
22
R2179
R2177
22
R2178
HEADPHONE AMP
22
22
R2180
HP-LCH
HP-RCH
R2172
1.8K
R2171
27K
R2271
56K
B1GDCFGA0018
Q2201
1.2K
R2175
C2171
25V4.7
1.2K
R2275
R2170 2.2K
R2270
2.2K
MUTING
3
2
5
4
1
6
B1GFGCAA0001
Q2101
MUTING
B1GFGCAA0001
Q2103
Q2103
FL
50V1
C2177
2.2K
R2196
0
W2540
0
W2658
1
C2294
100K
R2197
3.3K
R2192
100K
R2297
1
C2194
2.2K
R2296
50V1
C2277
FR
C2755
100P
R2761
820K
R2185
1.2K
1.2K
R2285
0.1
C2756
R2276
22K
0.1
C2757
R2751
470
5.6K
R2291
D2751
B0BC5R000009
22K
R2176
5.6K
R2191
C2752
0.01
0.1
C2280
100P
C2178
C2278
100P
SENSE1
SENSE2
470K
R2765
C2179
82P
R2764
470K
+7V
B0ACCK000005
D2752
D2753
B0ACCK000005
6
7
5
2
4
3
8
1
C0ABBB000350
IC2751
IC2751
82P
C2279
R2762
10K
C2180
0.1
R2763
10K
6
7
5
2
4
3
8
1
IC2102
C0AABB000125
-7V
HP_MUTE
CYOUT
CROUT
6
8
9
7
2
1
4
5
3
10
CN2002
TO TUNER PACK
(J3CBBB000001)
R2261
47K
680P
C2262
R2161
47K
W2611
0
C2162 680P
TUN-LCH
TUN-RCH
1K
R2260
1K
R2160
0.01
C2169
1
C2960
C2261
0
C2161
0
TUN_SD
TUN_DO
TUN_CLK
AGND
TUN_DI
-7V
CBOUT
TU+9V
+VCC
-VCC
6dB Clip
MUTING CONTROL
-VCC
+VCC
T+9V
PORT_SEL
TUNER SD
TUNER DI
AGND
TUNERGND
CHASSIS GND
TUNER CLK
RDS DETECT
TUNER LCH
TUNER RCH
TUNER DO/ST
C2835
25V22
0.1
C2838
6.3V100
C2806
25V22
C2834
6.3V1000
C2801
0.1
C2837
6.3V100
C2805
VMUTE
VIDEO BUFFER
MUTING
1K
R2804
0
K2811
Q2801
B1GBCFJN0033
26
25
27
28
17
18
20
22
24
23
21
19
8
7
5
6
16
15
10
9
13
14
11
12
3
1
2
30
32
31
4
29
C9ZB00000461
IC2801
IC2801
1
C2817
C2818
1
5V
PY
C2811
0.1
CR
VGND
CB
L2801
G0C220JA0055
C2812
0.1
C2808
10V220
C2810
0.01
C2807
0.01
Y
DVD_A+5V
C2809
25V22
C
CBIN
YIN
GND
SEL
CYIN
BIAS
S2
S1
SEL
CIN
CVIN
MUTE1
VCC1
CYSAG
GND2
CBOUT
CBSAG
SDCOUT
VOUT
COUT
YSAG
CYOUT
VSAG
YOUT
GND2
GND2
VCC2
MUTE2
CRIN
CRSAG
GND2
CROUT
3dB Clip
1K
R2803
0
W2593
B0JCAE000001
D2810
OP AMP
3
2
5
4
1
6
W2303
0
W2609
0
W2572
0
W2578
0
W2571
0
R2186
R2286
1.5K
1.5K
R2292 3.3K
0
W2632
W2615
0
W2573
0
W2618
0
W2616
0
0
R2810
C2814
25V22
0.1
C2802
6.3V100
C2833
VOUT
SA-PT250GCP
81
Summary of Contents for SA-PT250GCP
Page 5: ...25 Replacement Parts List 108 25 1 Component Parts List 109 5 SA PT250GCP ...
Page 12: ...12 SA PT250GCP ...
Page 36: ...9 2 Main Components and P C B Locations 36 SA PT250GCP ...
Page 51: ...Step 3 Remove the middle chassis Step 4 Remove the traverse unit 51 SA PT250GCP ...
Page 66: ...SA PT250GCP 66 ...
Page 74: ...SA PT250GCP 74 ...
Page 76: ...76 SA PT250GCP ...
Page 104: ...24 Exploded Views 104 SA PT250GCP ...
Page 105: ...24 1 Cabinet Parts Location SA PT250GCP 105 ...
Page 106: ...SA PT250GCP 106 ...
Page 107: ...24 2 Packaging SA PT250GCP 107 ...