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18 Appendix Information of Schematic Diagram
18.1. Voltage Measurement & Waveform Chart
Note:
• Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with
the chassis taken as standard.
Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester.
• Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point because it
may differ from actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.
18.1.1. Main Unit (SU-HTB550)
18.1.1.1. MAIN P.C.B. (1/6)
REF NO.
MODE
1
2
HDMI
0
0
STANDBY
0
0
REF NO.
MODE
21
22
HDMI
3.4
1.9
STANDBY
3.4
1.9
REF NO.
MODE
41
42
HDMI
0
1.8
STANDBY
0
1.8
REF NO.
MODE
61
62
HDMI
3.3
3.4
STANDBY
3.3
3.4
REF NO.
MODE
81
82
HDMI
3.4
0
STANDBY
3.4
0
REF NO.
MODE
101
102
HDMI
0
0
STANDBY
0
0
REF NO.
MODE
121
122
HDMI
3.2
0
STANDBY
3.2
0
REF NO.
MODE
1
2
HDMI
1.7
0
STANDBY
1.7
0
REF NO.
MODE
1
2
HDMI
3.4
3.3
STANDBY
3.4
3.4
REF NO.
MODE
21
22
HDMI
0
0
STANDBY
0
0
3
4
5
6
7
3.4
0
0
0
0
3.4
0
0
0
0
23
24
25
26
27
0
0
0
0
0.3
0
0
0
0
0.3
43
44
45
46
47
0
1.7
0
1.7
0
0
1.7
0
1.7
0
63
64
65
66
67
3.3
3.2
1.3
3.4
0
3.3
3.2
1.3
3.4
0
83
84
85
86
87
1.8
0
0
0
0
1.8
0
0
0
0
103
104
105
106
107
0
0
0
0
3.4
0
0
0
0
3.4
123
124
125
126
127
0
3.4
1.7
0
0
0
3.4
1.7
0
0
3
4
5
6
1.5
1.5
3.4
0
1.5
1.5
3.4
0
3
4
5
6
7
1.4
0
3.3
3.3
3.4
2.5
0
3.4
3.4
3.4
23
24
25
26
27
0
0
3.4
0
0
0
0
3.4
0
0
IC2001
8
9
10
11
12
1.5
3.4
0
0
0
1.5
3.4
0
0
0
IC2001
28
29
30
31
32
3.4
1.7
1.7
0
1.7
3.4
1.7
1.7
0
1.7
IC2001
48
49
50
51
52
0.9
0
3.4
1.7
0
0.9
0
3.4
1.7
0
IC2001
68
69
70
71
72
3.2
3.3
3.3
3.3
3.3
3.2
3.3
3.3
3.3
3.3
IC2001
88
89
90
91
92
0
0
0
0
0
0
0
0
0
0
IC2001
108
109
110
111
112
3.4
3.4
3.4
0
1.8
3.4
3.4
3.4
0
1.8
IC2001
128
0
0
IC2002
IC2003
8
9
10
11
12
3.3
3.3
0
3.3
3.3
3.4
3.4
0
3.4
3.4
IC2003
28
29
30
31
32
0
0
0
0
0
0
0
0
0
0
SC-HTB550GK/GS/GSX(SU-HTB550GK/GS/GSX) MAIN P.C.B.
121
13
14
15
16
17
0
3.4
0
0
0
0
3.4
0
0
0
33
34
35
36
37
1.6
0.3
0.3
3.4
3.4
1.6
0.3
0.3
3.4
3.4
53
54
55
56
57
0
1.7
1.8
0
3.3
0
1.7
1.8
0
3.3
73
74
75
76
77
3.3
0
0
0
0
3.3
0
0
0
0
93
94
95
96
97
1.6
0
0
0
0
1.6
0
0
0
0
113
114
115
116
117
0
0
0
0
0
0
0
0
0
0
13
14
15
16
17
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
33
34
35
36
37
0
3.4
1.9
3.4
0
0
3.4
1.9
3.4
0
18
19
20
0
0
1.7
0
0
1.7
38
39
40
0.1
0
1.6
0.1
0
1.6
58
59
60
3.3
3.3
3.3
3.3
3.3
3.3
78
79
80
0
1.9
0
0
1.9
0
98
99
100
0
3.4
0
0
3.4
0
118
119
120
3.4
3.4
3.4
3.4
3.4
3.4
18
19
20
3.4
0
0
3.4
0
0
38
39
40
3.4
3.3
3.3
3.4
3.4
3.4
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