JVC AV-21U4, Service Manual

Page: 35 / 46

(No.YA252)2-13 2-14(No.YA252)
<MAIN PWB>
MODE
DC (V)
PIN NO.
MODE
DC (V)
PIN NO.
MODE
DC (V)
PIN NO.
IC401
1 2.9
2 25.7
3 1.7
4 0
5 13.0
6 26.0
7 2.9
IC601
1 18.5
2 0
3 0.1
4 0
5 9.1
6 2.1
7 0
8 19.6
9 13.4
IC701
1 0
2 0
3 1.8
4 3.2
5 3.2
6 0
7 0
8 0
9 3.3
10 1.5
11 1.5
12 0
13 0
14 2.9
15 4.9
16 1.9
17 2.3
18 0
19 2.3
20 2.3
21 0
22 2.4
23 2.0
24 1.9
25 0
26 2.4
27 1.9
28 0
29 1.9
30 1.9
31 2.1
32 3.3
33 0.1
34 2.2
35 2.2
36 3.5
37 3.5
38 2.2
39 2.5
40 0
41 2.0
42 1.8
43 2.2
44 0.4
45 8.2
46 1.6
47 4.8
48 1.3
49 2.2
50 2.1
51 1.4
52 1.5
53 2.1
54 2.2
55 1.4
56 2.2
57 2.2
58 1.4
59 1.4
60 7.4
61 7.4
62 3.6
63 3.5
64 0
65 2.0
66 0.3
67 1.6
68 0
69 4.9
70 1.3
71 1.3
72 1.3
73 1.9
74 1.7
75 0.1
76 0
77 3.3
78 1.3
79 1.3
80 1.2
81 0
82 4.8
83 3.5
84 3.7
85 2.1
86 2.1
87 2.0
88 3.2
89 0
90 3.2
91 1.6
92 0
93 1.8
94 3.2
95 0
96 1.7
97 3.2
98 0.1
99 0
100 1.8
101 0
102 3.2
103 3.2
104 0
105 0
106 0.2
107 0
108 3.6
109 3.6
110 3.2
111 0
112 3.2
113 2.9
114 3.2
115 0
116 0
117 1.8
118 1.9
119 3.2
120 0.6
121 0
122 0.5
123 0
124 1.7
125 0
126 3.2
127 3.2
128 3.2
IC702
1 0
2 0
3 0
4 0
5 3.2
6 3.2
7 0
8 3.2
IC801
1 3.1
2 3.1
3 0.1
IC921
1 288.4
3 0
4 0
5 31.8
6 3.6
7 0.9
IC972
1 1.3
2 0
3 3.3
IC973
1 14.2
2 11.9
3 0
4 3.2
IC974
1 1.8
2 0
3 0
4 0.5
5 2.9
6 0
7 3.2
IC975
1 5.2
2 5.0
3 0
4 3.3
IC976
1 1.8
2 0
3 0
4 0.5
5 3.0
6 0
7 3.2
Q101
E 2.2
C 11.6
B 3.0
Q521
E 0
C 8.9
B 0
Q522
E 0
C 112.0
B -0.1
Q571
E 115.3
C 0
B 114.8
Q572
E 0
C 3.2
B 0
Q601
E 8.1
C 0.2
B 8.2
Q602
E 0.2
C -0.2
B 0
Q605
E 0
C 2.3
B -0.2
Q607
E 0
C 0
B 0.6
Q608
E 0
C 14.6
B 0
Q703
E 3.2
C 0
B 3.2
Q801
E 2.0
C 0
B 1.3
Q803
E 0
C 0
B -1.0
Q805
E 0.2
C -1.0
B 0
Q980
E 14.2
C 6.4
B 14.2
Q981
E 0
C 14.2
B 0
Q982
E 0
C 0
B 0.7
TU001
1 2.2
2 3.7
3 0
4 3.5
5 3.5
6 4.8
7 4.8
8 0
9 34.6
10 0
11 0
<CRT SOCKET PWB>
MODE
DC (V)
PIN NO.
IC351
1 2.1
2 2.1
3 2.2
4 0
5 5.0
6 185.7
7 114.6
8 118.4
9 121.3
VOLTAGE CHARTS WAVEFORMS
-MAIN PWB-
-CRT SOCKET PWB-
IC401-1
0.8Vp-p
[V]
IC401-3
25Vp-p
[V]
IC401-5
48Vp-p
[V]
IC401-6
27Vp-p
[V]
IC701-10
2.4Vp-p
IC701-11
3.0Vp-p
IC701-22
1.9Vp-p
IC701-23
2.6Vp-p
[V] [V]
IC701-67
3.0Vp-p
[H]
IC701-74
0.3Vp-p
[H]
IC701-66
5.0Vp-p
[H]
[H]
IC701-87
2.3Vp-p
[H]
IC701-48
2.0Vp-p
[H]
T522-2
200Vp-p
T522-3
30Vp-p
[H] [H]
T522-4
230Vp-p
[H]
T522-5
4.5Vp-p
[H]
T522-7
50Vp-p
[H]
T522-9
3.0Vp-p
[H]
Q522-C
960Vp-p
[H]
Q521-B
1.4Vp-p
Q521-C
34Vp-p
[H]
Q522-B
9.0Vp-p
[H] [H]
IC351-7
110Vp-p
IC351-8
150Vp-p
IC351-9
160Vp-p
[H]
IC701-85
2.0Vp-p
IC701-86
1.5Vp-p
[H] [H]
[0.2us/div] [0.2us/div]
[H]