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87
14 Voltage Measurement
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.
14.1. Main Speaker Unit (SU-HTB485)
14.1.1.
HDMI P.C.B. (1/2)
REF NO.
MODE
1
2
3
4
5
6
7
8
9
10
11
1
2
13
14
15
1
6
1
7
18
19
2
0
POWER
5.0
1.
7
0
0
3.1
3.3
0
3.1
0
3.1
3.1
3.3
3.1
3.1
0
0
0
1.8
1.0
0
S
T
A
NDB
Y
5.0
1.
7
0
0
3.1
3.3
0
3.1
0
3.1
3.1
3.3
3.1
3.1
0
0
0
1.8
1.0
0
REF NO.
MODE
2
1
22
2
3
2
4
2
5
26
27
2
8
2
9
30
31
3
2
33
34
35
3
6
3
7
38
39
40
POWER
1.8
0
0
0
3.3
0
0
0
0
0
3.3
0
0
1.
7
0
1.8
1.8
0
0
0
S
T
A
NDB
Y
1.8
0
0
0
3.3
0
0
0
0
0
3.3
0
0
1.
7
0
1.8
1.8
0
0
0
REF NO.
MODE
41
4
2
43
44
45
4
6
4
7
48
49
50
51
5
2
53
54
55
5
6
5
7
58
59
6
0
POWER
4.5
0
4.9
4.9
1.8
0
3.0
3.0
0
3.0
3.0
0
3.0
3.0
1.8
3.0
3.0
0
0
0
S
T
A
NDB
Y
4.5
0
4.9
4.9
1.8
0
3.0
3.0
0
3.0
3.0
0
3.0
3.0
1.8
3.0
3.0
0
0
0
REF NO.
MODE
6
1
62
6
3
6
4
6
5
66
67
6
8
6
9
7
0
7
1
72
7
3
7
4
7
5
76
77
7
8
7
9
80
POWER
1.8
3.3
0
0
0
0
0
0
0
0
0
0
3.3
0
0
0
0
3.3
3.0
0
S
T
A
NDB
Y
1.8
3.3
0
0
0
0
0
0
0
0
0
0
3.3
0
0
0
0
3.3
3.0
0
REF NO.
MODE
81
8
2
83
84
85
8
6
8
7
88
89
90
91
9
2
93
94
95
9
6
9
7
98
99
100
POWER
1.8
0
3.3
3.4
0
3.4
1.
7
0
0
0
0
0
1.8
1.
7
1.
7
0
3.4
0
0
1.8
S
T
A
NDB
Y
1.8
0
3.3
3.4
0
3.4
1.
7
0
0
0
0
0
1.8
1.
7
1.
7
0
3.4
0
0
1.8
REF NO.
MODE
101
10
2
103
104
105
10
6
10
7
108
109
110
111
11
2
113
114
115
11
6
11
7
118
119
1
2
0
POWER
0.8
0.
7
1.8
0
0
0
3.0
0
0
1.8
0
1.
7
0.8
3.3
0.8
0.
7
0
0.
6
0.
7
3.3
S
T
A
NDB
Y
0.8
0.
7
1.8
0
0
0
3.0
0
0
1.8
0
1.
7
0.8
3.3
0.8
0.
7
0
0.
6
0.
7
3.3
REF NO.
MODE
1
2
1
1
22
1
2
3
1
2
4
1
2
5
1
26
1
27
1
2
8
1
2
9
130
131
13
2
133
134
135
13
6
13
7
138
139
140
POWER
0.8
0.
6
0
0
0
1.8
0
0
1.
7
0
0.
6
0.
7
3.3
0.
7
0.
6
0
0.
6
0.
6
3.3
0.8
S
T
A
NDB
Y
0.8
0.
6
0
0
0
1.8
0
0
1.
7
0
0.
6
0.
7
3.3
0.
7
0.
6
0
0.
6
0.
6
3.3
0.8
REF NO.
MODE
141
14
2
143
144
POWER
0.
6
4.9
5.0
5.0
S
T
A
NDB
Y
0.
6
4.9
5.0
5.0
REF NO.
MODE
1
2
3
4
5
6
7
8
POWER
3.4
1.0
0
0
4.3
0
0
4.3
S
T
A
NDB
Y
3.4
1.0
0
0
4.3
0
0
4.3
REF NO.
MODE
1
2
3
4
5
6
7
8
E
C
B
POWER
1.8
0.8
0
0
3.0
0
0
3.3
0
1.8
0.4
S
T
A
NDB
Y
1.8
0.8
0
0
3.0
0
0
3.3
0
1.8
0.4
3
0
1
1
Q
1
0
1
1
C
I
IC1000
SU-HTB485EB/EG/GN HDMI P.C.B.
IC1000
IC1000
IC1000
IC1000
IC1100
IC1000
IC1000
IC1000
Summary of Contents for SB-HWA480EB
Page 4: ...4 1 2 Caution for AC Cord For EB only Figure 1 2 ...
Page 13: ...13 5 2 Remote Control Key Button Operations ...
Page 25: ...25 8 3 Types of Screws 8 3 1 Main Speaker Unit SU HTB485 8 3 2 Active Subwoofer SB HWA480 ...
Page 33: ...33 Step 5 Remove 2 screws Step 6 Remove HDMI P C B ...
Page 35: ...35 Step 9 Slightly lift up Main P C B Step 10 Remove Main P C B ...
Page 36: ...36 Step 11 Slightly lift up Connecting Plate Assembly Unit Step 12 Release Main P C B ...
Page 54: ...54 ...
Page 64: ...64 ...
Page 94: ...94 ...