JVC AV-56WP74 Service Manual page 76

MAIN PWB CIRCUIT DIAGRAM (7/12) SHEET 7
IC1301-35 IC1301-36
[H]
1.5Vp-p
9V
SHEET 12
5V
SIGNAL
SDA0
SDA0
SHEET 10
SCL0
SCL0
VY_SWAP
VY_SWAP
SHEET 5
L_SWMAIN
L_SWMAIN
R_SWMAIN
R_SWMAIN
2DYC_Y
2DYC_Y
SHEET 6 2DYC_BY
2DYC_BY
2DYC_RY
2DYC_RY
L_SWSUB
L_SWSUB
SHEET 5
R_SWSUB
R_SWSUB
COMY1
COMY1
COMPB1
COMPB1
COMPR1
COMPR1
D13
D13
COMY3
COMY3
COMPB3
COMPB3
COMPR3
COMPR3
SHEET 4
COMY5
COMY5
COMPB5
COMPB5
COMPR5
COMPR5
COML5
COML5
COMR5
COMR5
D53
D53
D5J
D5J
CN100W OPEN
COMPR4
COMPB4
COMY4
D43
GND
-M2
IC1301-38 IC1301-46 IC1301-48
[H] [H] [H]
1.5Vp-p 2.1Vp-p 2.1Vp-p 1.0Vp-p
R1346
OPEN
C1341
1 /16
R1347
75
D1301
COMY3 VGND VGND
MA8100/M/-X
COMPB3
COMPR3
0.01
C1343
C1342
0.01
VGND
COMY1
COMPB1
COMPR1
R1336
OPEN 0.01
C1331 C1333
1 /16 C1332
0.01
D1302
VGND
R1337
75
K1304
0
VGND VGND
MA8100/M/-X
K1305 0
NRSA63J-0R0X
K1306 0
NRSA63J-0R0X
CN10E4
OPEN
K1307 0
NRSA63J-0R0X
VGND
GND
No.52105
AV-48WP74 AV-48WP74
AV-56WP74 AV-56WP74
IC1301-50 IC1301-52 IC1301-57
[H] [H] [H]
0.5Vp-p 0.7Vp-p 1.8Vp-p
L1302
QRN143J-0R0X
0
C1325 C1324 L1301
1 /16 1 /16 0
QRN143J-0R0X
C1301
100 /16
C1318
1 /16
C1304
0.1 /16
VGND
AGND2
PbinM Yout2
Rout1
YinM
PrinM BIAS VGND8
IC1301
VGND5 Pbout2
AN15852A
LinM Prout2
RinM AGND8
AGND5 Lout2
COMPONENT
SLVADR Rout2
YinS AVCC
INPUT SW
PbinS Yout3
PrinS VGND9
Pbout3
VGND6 DCout
RinS Prout3
C1305
LinS AGND6 AGND9 0.1 /16
C1302
100 /16
C1306
0.1 /16
C1303 IGND
K1303 100 /16
0
NRSA63J-0R0X
GND
R1369
OPEN
VGND VGND
R1311 R1312
OPEN OPEN
R1378 R1359
0 OPEN
C1367 OPEN C1357
OPEN
OPEN
VGND VGND VGND VGND
2-19 2-20
PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V)
IC1301 25 0 50 4.6 75
1 0 26 4.3 51 0 76
2 0 27 4.3 52 4.6 77
3 4.6 28 4.2 53 0.4 78
4 0 29 0 54 0 79
5 4.6 30 4.4 55 0 80
6 0 31 9.0 56 0 Q1301
7 4.7 32 4.5 57 4.6 E
8 5.0 33 4.5 58 0 C
9 4.6 34 0 59 4.6 B
10 0.4 35 4.4 60 0 Q1302
11 4.4 36 4.4 61 4.6 E
12 4.4 37 0 62 0 C
[H]
13 0 38 4.4 63 4.4 B
14 4.6 39 4.6 64 4.4 Q1303
15 0 40 4.4 65 0 E
16 4.6 41 4.5 66 4.6 C
17 0 42 0 67 4.6 B
18 4.6 43 4.5 68 0
19 0.4 44 4.5 69 0
20 4.4 45 0 70 4.4
21 0 46 4.5 71 4.4
22 0 47 9.0 72 0
23 4.5 48 4.7 73 0
24 4.5 49 0 74 0
Q1301 0.1 /16
2SC3837K/NP/-X C1372
R1372
R1376
100 VGND
OPEN
C1371
33 /16
R1375
0
R1371 R1373 LC1301
OPEN OPEN
QQR1199-001
C1373 R1374
470
OPEN
VGND
R1377
VGND
VGND OPEN
0.1 /16
Q1302
C1382
2SC3837K/NP/-X
R1382
R1386
100 VGND
OPEN
C1381
33 /16
R1385
0
R1381 R1383
OPEN OPEN LC1302
C1383
R1384 QQR1199-001
OPEN 470
VGND
R1387
VGND
VGND OPEN
C1392
C1307 Q1303 0.1 /16
10 /16 2SC3837K/NP/-X VGND
R1392
R1396
100
OPEN
C1391
R1395 33 /16
0
R1391 R1393
LC1303
OPEN OPEN
C1384
R1394 QQR1199-001
OPEN 470
VGND
VGND R1397
VGND
OPEN
No.52105
4.6
4.6
0
4.4
0
0
3.7
9.0
4.4
3.6
9.0
4.4
3.6
9.0
4.4
SHEET 8
COMSYNCY
SHEET 9
AP_Y
COM_Y
COMYGND
COM_PB
SHEET 10
COMPBGND
COM_PR
COMPRGND
CN100A
OPEN
VGND
AUDIO_L SHEET 1
AUDIO_R