JVC AV-48WP74 Service Manual page 52

MAIN PWB CIRCUIT DIAGRAM (10/12) SHEET 10
DIST BASE BLOCK
VOLTAGE ( V ) VOLTAGE ( V )
PIN NO. PIN NO.
Q1401 67 0
E 0 68 0
C 0 69 0
B 0.6 70 0
CN1004 71 4.5
1 0 72 0
2 0 73 4.4
3 0 74 0
4 0 75 4.4
5 0 76 3.1
6 5.1 77 10.2
7 31.8 78 0.1
8 0 79 1.5
9 0 80 0
10 4.5 81 0.1
11 4.5 82 2.6
12 0 83 0.1
13 0 84 0
14 2.1 85 0.1
15 3.1 86 3
16 0 87 0
17 0 88 3.1
18 0 89 0
19 0 90 5.1
20 28.6 91 0
21 0 92 0
22 0 93 0
23 3.6 94 9.6
24 0 95 0
25 3.3 96 3
26 0 97 3
27 9 98 0.2
28 0 99 0.1
29 0 100 0
30 0 101 3.1
31 5.1 102 0
32 0 103 3.1
33 3.1 104 0
34 3.1 105 0
35 0 106 0
36 0.1 107 3.3
37 3.1 108 0
38 3.1 109 3.3
39 2.8 110 0
40 0 111 3.3
41 3 112 4.9
42 5.1 113 0
43 5.1 114 2.5
44 0 115 2.5
45 0.2 116 0
46 0.2 117 0
47 0 118 0
48 0 119 0
49 2.6 120 0
50 2.6
51 0
52 4
53 0
54 3.3
55 0
56 0
57 0
58 0
59 0
60 0
61 0.4
62 4.4
63 0
64 0
65 0
66 3.9
2-24
-M2
BS_8V
SHEET 12
BS_5V
AUDIO_L
SHEET 7
AUDIO_R
STB_3.3V
SHEET 12
STB_GND
BSSTB_7V
SHEET 1
TU_POW
SHEET 12
SHEET 12
LB_PRO
SHEET 9
LOB_POW
SHEET 1 BS_POW
EE_CDS
REMO
SHEET 9
KEY2
KEY1
MECA_SW
SHEET 10
A_MU
SDA2
SCL2
SHEET 1
AFT2
C/N_AFT1
SDA1
SHEET 9
SCL1
SDA0
HDCP
SHEET 8
RST3
SHEET 9
ON_TIM
NOT USE
BSD_IR
SHEET 3
COMPU
CN1GN1 CN1GN2
OPEN OPEN
GND GND
32V
AC
21V
No.52105
MI-COM & DIST M
BS8V
C1408 BS8V
OPEN
BSDGND
BSDGND
BSDGND
GND
BS5V
BT30V
C1412 GND
100 /16
GND
AUDIO_L
AUDIO_R
GND
GND
AC_IN
C1407
STB3.3V
C1420
STBGND
OPEN
OPEN
STB7V
TU_POW
R1404 OPEN
GND
R1403 OPEN
21V
C1423
GND
47 /50
LB_PRO
LOB_POW
BS_POW
3.3V
GND
9V
GND
GND
GND
5V
GND
A3.3V
GND
EE_CDS
REMO
KEY2
KEY1
MECA_SW
GND
A_MU
SDA2
SCL2
NC
AFT2
C/N( AFT1)
GND
I2C_STOP
SDA1
R1409
SCL1
0
SDA0
HDCP_V
GND
RST3
ON_TIM
GND
BSD_IR
BSD_IR_GND
COMPU
GND
GND
G CRT SOCK
CN00E
AV-48WP74
AV-56WP74
CN1004
QGC2508C
COM
V
S