JVC AV-48WP74 Service Manual page 42

MAIN PWB CIRCUIT DIAGRAM (5/12) SHEET 5
SHEET 10
NOT USE
SHEET 3
NOT USE
2-14
Y_BSDGND
Y_BSDGND
V_RT
V_RT
Y_BSD
Y_BSD
L_BSA L_BS
Y1501
L_BSA
OPEN
L_BSD
Y1502
L_BSD
0
V_BS
V_BS
R_BSA R_BS
Y1503
R_BSA
OPEN
R_BSD
Y1504
R_BSD
0
C_BSD
C_BSD
V2
V2
L2
L2
Y2
Y2
R2
R2
C2
C2
S2_2
S2_2
S2
S2
V1
V1
L1
L1
Y1
Y1
R1
R1
C1
C1
S2_1
S2_1
S1
S1
L3
L3
R1523
V3
V3
R1520
R3
R3
R1525
MON_Y
MON_Y
MON_C
MON_C
MON_V
MON_V
MON_L
MON_L
MON_R
MON_R
PIN NO. VOLTAGE ( V ) PIN NO. VOLTAGE ( V )
IC1501 22
1 3.9 23
2 4.5 24
3 3.9 25
4 4.5 26
5 4.4 27
6 0 28
7 5.0 29
8 4.4 30
9 4.5 31
10 3.9 32
11 4.4 33
12 4.4 34
13 0.4 35
14 0 36
15 3.9 37
16 4.4 38
17 4.4 39
18 4.4 40
19 4.4 41
20 0.1 42
21 5.0 43
-M2
R1582
0
R1535
220
Y3
R1536
6.8k
RV3
R1537
220
C3
S2-3
S-3
R1538
220
V4
R1539
6.8k
LV4
R1577
220
Y4
R1578
6.8k
RV4
R1579
220
C4
D1596
MA8100/M/-X
S2-4
GND
S-4
LV5
6.8k
V5
220
RV5
6.8k
ADR
D1593 D1594
OPEN OPEN
GND
R1521
220
PIN NO. VOLTAGE ( V ) PIN NO. VOLTAGE ( V )
0 44 6.6 IC1502
4.4 45 4.5 1 0
3.9 46 3.8 2 4.0
4.4 47 4.4 3 4.0
4.4 48 0 4 0
0.1 49 6.3 5 0
5.0 50 4.5 6 0
4.5 51 4.4 7 5.1
3.9 52 4.5 8 0
4.5 53 6.2 9 0
0 54 4.5 10 0
4.0 55 4.5 11 0
4.0 56 5.6 12 0
0 57 0 13 5.1
0.1 58 4.3 14 0
4.4 59 4.4 15 0
4.5 60 5.3 16 5.1
3.7 61 4.4
4.5 62 4.4
3.5 63 5.2
9.1 64 4.5
4.5
No.52105
GND
GND
R1524
220
IC1501-22 IC1501-44
[H]
1.0Vp-p 2.0Vp-p
AV-48WP74
AV-56WP74
IC1501
CXA2069Q
RTV
TV
LTV
RV6
V6
LV5
COUT1
VGND
YOUT1
TRAP1
ROUT1
VOUT1
LOUT1
CIN1
C1532
BIAS 22 /50
QETN1HM
YIN1
R1530
1k
Q1531
R1560
100
R15
0
R1561
R1562
OPEN
1K
GND
IC1501-47
[H] [H]
2.8Vp-p