JVC AV-56WP74 Service Manual page 74

MAIN PWB CIRCUIT DIAGRAM (5/12) SHEET 5
Y_BSDGND
SHEET 10
Y_BSDGND
V_RT
V_RT
Y_BSD
Y_BSD
L_BSA L_BS
Y1501
L_BSA
OPEN
L_BSD
Y1502
NOT USE 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
SHEET 3
S2
V1
V1
L1
L1
Y1
Y1
R1
R1
C1
C1
S2_1
S2_1
S1
S1
L3
L3
V3
V3
R3
R3
MON_Y
MON_Y
MON_C
MON_C
NOT USE MON_V
MON_V
MON_L
MON_L
MON_R
MON_R
PIN NO. VOLTAGE (V)
IC1501
1 3.9
2 4.5
3 3.9
4 4.5
5 4.4
6 0
7 5.0
8 4.4
9 4.5
10 3.9
11 4.4
12 4.4
13 0.4
14 0
15 3.9
16 4.4
17 4.4
18 4.4
19 4.4
20 0.1
21 5.0
-M2
R1582
0
GND
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
R1523 6.8k
V5
R1520 220
RV5
R1525 6.8k
ADR
D1593 D1594
OPEN OPEN
GND
R1521 R1524
220 220
PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V)
22 0 44 6.6 IC1502
23 4.4 45 4.5 1 0
24 3.9 46 3.8 2 4.0
25 4.4 47 4.4 3 4.0
26 4.4 48 0 4 0
27 0.1 49 6.3 5 0
28 5.0 50 4.5 6 0
29 4.5 51 4.4 7 5.1
30 3.9 52 4.5 8 0
31 4.5 53 6.2 9 0
IC1501-22
32 0 54 4.5 10 0
[H]
33 4.0 55 4.5 11 0
34 4.0 56 5.6 12 0
35 0 57 0 13 5.1
36 0.1 58 4.3 14 0
37 4.4 59 4.4 15 0
38 4.5 60 5.3 16 5.1
39 3.7 61 4.4
40 4.5 62 4.4
41 3.5 63 5.2 1.0Vp-p
42 9.1 64 4.5
43 4.5
No.52105
AV-48WP74 AV-48WP74
AV-56WP74 AV-56WP74
D1591 D1592
OPEN OPEN
R1501
R1502
R1507
R1508
R1504
R1509
GND
GND
C1501
0.1 /16
C1502
GND GND
47 /25
GND
IC1501
CXA2069Q
RTV
TV
LTV
RV6
V6
LV5
COUT1
VGND
YOUT1
TRAP1
ROUT1
VOUT1
LOUT1
N
CIN1 C1510
10 /16
C1532
BIAS 22 /50
QETN1HM-226Z
YIN1
R1530
1k
Q1531
C1531
R1560
0.1 /16
100
R1563
0 GND
R1561
R1562
OPEN
1K
GND
IC1501-44 IC1501-47 IC1501-53 IC1501-56
[H] [H] [H]
2.0Vp-p 2.8Vp-p 2.1Vp-p
2-15 2-16
CN100H
QGF1201C2-13
10 SCL0
10 SDA0
GND
10 SUR_EFCT C4
C4
10 SUR_MONO
GND
10 SUR_SW Y4
Y4
10 BBE_SW
GND
V4
V4
GND
GND
L4
L4
GND
R4
R4
IC1502
S4
M62320FP-X
S4_DET
GND
NC
R1510 OPEN BBE_LO
GND
R1506 OPEN BLEV1
R1505 OPEN BLEV2
R1543 10 AMP_MU
R1512 OPEN HP_MU
SCL0
SCL0
SDA0
SDA0
BBE_LO
BBE_LO
TV_V2
TV_V2
TV_L2
TV_L2
TV_R2
TV_R2
GRVOUT
GRVOUT
TV_L1
TV_L1
TV_R1
TV_R1
SUR_SW
SUR_SW
BBE_SW
BBE_SW
R1547 0
TV_R1 SUR_EFCT
SUR_EFCT
SUR_MONO
C1539 SUR_MONO
R1548 0 4.7
GRVOUT AMP_MU
AMP_MU
C1538 HP_MU
HP_MU
R1549 0 OPEN
TV_L1
GND
C_SWMAIN
C_SWMAIN
R1550 1k
TV_R2
C1505
VY_SWMAIN
4.7 VY_SWMAIN
R1551 0
TV_V2
VY_SWAP
VY_SWAP
R1552 1k
TV_L2
C_SWSUB
C_SWSUB
VY_SWSUB
VY_SWSUB
R_SWSUB
R_SWSUB
HP_R
R1553 OPEN
L_SWSUB
L_SWSUB
HP_L
R1554 OPEN
BLEV1
BLEV1
BLEV2
BLEV2
L_SWMAIN
L_SWMAIN
R_SWMAIN
R_SWMAIN
BS_5V
BS_5V
AV_9V
AV_9V
S1DC
S1DC
IC1501-60 IC1501-63
[H] [H] [H]
1.3Vp-p
2.1Vp-p 1.3Vp-p
No.52105
FRONT RELAY PWB
SHEET 23
SHEET 1
SHEET 11
SHEET 1
SHEET 2
SHEET 1
SHEET 11
SHEET 1
SHEET 10
SHEET 7
SHEET 6
SHEET 7
SHEET 1
SHEET 7
SHEET 1
SHEET 11
SHEET 7
SHEET 12
NOT USE