Audio Tracking is failed.
IC301 Pin 93 is defective.
PB COLOR Signal disappear.
IC301 Pin 10 is defective.
EE, PB Screen doesn’t appear.
Q305 is defective.
REC is failded.
D301 or IC301 Pin30 is defective.
PB Screen is bad.
Q301, 302 are defective.
PB COLOR Signal disappear.
X301 is defective.
PB and Recording is failed.
(IC301 doesn’t operate.)
IC301 Pin 23, 24 are defective.
Normal Audio signal is not recorded.
FL301, Q309, Q311 are defective.
No mono Audio Signal
in PB MODE.
Q308, Q309, Q310
are defective.
WAVEFORM & VOLTAGE SHEET
IC301 Pin 20
PB mode
500mvp-p
IC301 Pins 38,32,31
Video in
1Vp-p
IC301 Pin 28
PB/REC mode
4.2Vp-p
IC301 Pin 7
REC mode
1.4Vp-p
IC301 Pin 6
REC mode
2.2Vp-p
IC301 Pin 29
PB mode
2.1Vp-p
IC301 Pin 41
PB mode
400mVp-p
IC301 Pin 64
PB mode
600mVp-p
IC301 Pin 23
PB/REC mode
5Vp-p
IC301 Pin 24
PB/REC mode
5Vp-p
IC301 Pins 71 , 72
REC mode
340mVp-p
IC301 Pins 51, 52,54
PB mode
300mVp-p
IC301 Pin 63
PB mode
600mVp-p
IC301 Pin 11
PB mode
3.2Vp-p
IC301 Pin 10
PB mode
1.8Vp-p
IC301 Pin 43
PB mode
400mVp-p
__
IC301 Voltage Sheet
__
IC301 Oscilloscope Waveform
PB RECPIN PIN PIN PIN PINPB REC PB REC PB REC PB REC
2.44
2.44
2.46
2.45
0.09
2.46
2.46
0
0
0.93
1.68
4.98
1.49
1.68
2.34
5.01
3.08
1.98
1.18
3.01
2.42
2.42
2.44
2.35
0.88
2.34
2.34
0
0
0.93
1.68
2.60
1.52
1.38
2.32
5.02
0.15
2.45
2.45
3.05
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
2.41
0
4.48
4.19
1.69
0.05
0.34
0.34
1.78
1.10
2.97
-
1.45
1.81
3.25
1.82
4.79
1.81
4.10
5.00
2.52
0
4.52
4.23
1.69
0.06
0.34
0.34
1.84
4.57
2.94
2.3
1.37
1.79
3.22
1.95
4.79
2.25
4.10
5.00
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
2.93
3.16
3.02
0
2.34
1.46
9.13
1.94
0.85
0
1.83
2.71
0
2.62
4.91
0.56
3.44
5.00
3.36
3.31
2.92
3.14
2.05
0
2.33
1.44
9.12
1.96
0.85
0
1.82
2.62
0
2.62
4.91
0.57
3.44
5.00
3.37
3.31
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
3.43
3.31
5
5
2.03
2.66
3.87
0
0.80
1.98
2.52
3.37
3.8
1.55
4.96
2.43
0.01
2.42
2.46
2.43
3.43
3.32
5
5
2.03
2.67
3.86
0
1.27
2.92
2.51
1.73
3.17
0.01
4.94
2.41
0.14
2.42
2.45
2.23
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
0
0.03
0
0.03
0.03
0
4.87
1.83
0
1.83
1.83
0.02
2.17
0
0
2.29
0
2.43
5.08
2.43
0
0.04
0
0.03
0.03
0
4.80
3.97
0
3.95
3.98
1.55
0.01
2.01
0
2.38
0
2.41
4.28
2.60
__
TR Voltage Sheet
REC modePB mode
CBBEEC
1.213
1.548
2.161
1.217
2.383
1.222
5.258
0
0
5.256
1.224
0
3.930
5.158
0
5.061
0
0
0.280
0
0
5.180
3.923
5.251
1.864
2.191
1.499
1.835
1.705
0.545
5.176
0.744
0.720
4.583
1.872
0
1.783
1.813
2.147
1.216
2.420
1.221
5.186
15.624
-5.69
5.189
0.271
1.258
3.348
5.147
0
5.039
0
0
3.301
0
0
-21.64
3.190
5.179
2.435
2.452
1.494
1.824
1.749
0.557
4.352
-21.49
-21.77
5.148
0.688
1.756
Q301
Q302
Q303
Q304
Q305
Q306
Q307
Q308
Q309
Q310
Q311
Q3A1
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