STR-DH720/DH720HP
STR-DH720/DH720HP
40
40
5-27. SCHEMATIC DIAGRAM – Panel Section –
• See page 42 for Waveforms. • See page 47 for IC Block Diagrams.
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
DISPLAY BOARD
POWER KEY BOARD
-22 -23 -24 -24 -24 -24 -16 -24 -16 -20 -22
3.3
0
0
0 1.8 1.7
0 3.3
3
-16
-24
-20
-20
-14
-20
-16
-24
-16
3.3
-22
-22
-22
-22
-22
-22
-22
-22
-22
3.3
0
4
0
4
3.3
3.3
0
0
-7
0
7
0
0
0
EN151
MASTER VOLUME
1
2
3
7.5
JW165
220p
C157
220p
C158
220p
C156
C194
0.1
C165
0.1
C151
2200p
R155
10
100
R156
100
R159
100
R160
100
R161
82k
R162
4700p
C144
0.022
C145
33k
R142
100
R141
10V
100
C146
35V
47
C142
8
7
6
5
4
3
2
1
NJM4565M-D
IC101
VSS
VDD
1
R164
1
R165
1k
R143
1kohm
FB151
10
JS101
2
3
5
6
8
7
1
4
9
ND151
C
L111
CL1
12
CL1
13
CL1
14
CL1
16
CL120
CL121
1SR154-400TE-25
D151
10
JS151
2200p
C150
CL1
15
CL1
17
CL1
18
CL1
19
CL122
CL123
CL124
CL125
CL126
CL127
CL128
CL129
CL130
CL131
CL132
CL133
CL134
CL137
CL138
CL139
CL136
CL140
CL141
CL143
CL142
CL144
CL145
CL146
CL147
CL148
CL149
CL150
CL151
CL152
CL153
CL154
CL135
22k
R176
10k
R177
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
CNS151
25P
FL_CLK
FL_DIN
FL_LAT
INPUT_JOG
AD1
AD2
SIRCS
PW_SW
VOL_JOG
+3.9V DCDC
FL_GND
FL_GND
+3.3V_STBY
DGND
TONE_JOG
DGND
MIC_MUTE
DCAC_SIGNAL
V2_AUDIO_L
A_GND
V2_AUDIO_R
V_GND
V2_VIDEO
+7V
-7V
CL155
CL156
CL157
CL158
CL159
CL160
CL161
CL162
CL163
CL164
CL165
CL166
CL167
CL168
CL169
CL170
CL171
CL172
CL173
CL174
CL175
CL176
CL177
CL178
CL179
DZ2J051M0L
D145
CL180
CL181
CL182
CL183
1
3
4
5
CN152
5P
Mic Mute
GND
+7V
DCAC
VCC
OUT
GND
MC2840-T112-1
D141
MC2840-T112-1
D142
E
ET101
1
2
3
22k
R196
2200p
C198
C196
2200p
10k
R197
CL184
CL185
CL186
CL187
1
3
4
5
CN101
5P
AD1
PW_SW
GND
TONE_JOG
0.1
C143
0.1
C153
0.1
C105
0.1
C110
0.1
C147
0.1
C155
0.1
C162
0.1
C163
CL188
CL189
CL190
CL191
CL192
CL197
CL198
CL199
0.1
C141
50V
C154
10
50V
10
C106
50V
10
C104
50V
C164
10
50V
C152
10
CL193
CL194
47uH
L142
D104
DA2J10100L
D105
DA2J10100L
C108
33p
33p
C102
6G
1G
8G
3G
2G
13P
14P
10G
9G
11
P
15P
12P
16P
10P
5G
11G
4G
7G
17P
9P
3P
4P
16P
15P
14P
13P
10P
8P
5G
7P
11
P
8G
5P
17P
6P
9G
12P
6G
3G
4G
11
G
10G
1G
7P
6P
5P
4P
3P
2P
1P
1P
2P
8P
9P
7G
2G
C114
220p
YEL
WHT
RED
2.2k
R103
2.2k
R113
1k
R111
R112
47k
1k
R101
R102
47k
DA2J10100L
D101
DA2J10100L
D102
680p
C101
680p
C111
C107
0.1
75
R115
47p
C103
10 11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
9
8
7
6
5
4
3
2
1
34
35
36
37
38
39
40
41
42
43
44
PT6315
IC152
SW1
SW2
SW3
SW4
OSC
DOUT
DIN
CLK
STB
KEY1
KEY2
VSS
VDD
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG1
1
SEG12
SEG13
SEG14
SEG15
SEG16
VEE
SEG17
GRID1
1
GRID10
GRID9
GRID8
GRID7
GRID6
GRID5
GRID4
GRID3
GRID2
GRID1
VDD
VSS
IC152
FL DISPLAY DRIVER
EN181
INPUT SELECTOR
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 41 42 43 44 45 46 47 48 49 50
2
53 54
1
6
5
8
9
7
S107
MEMORY/
ENTER
R168
1k
R169
2.2k
2.2k
R170
4.7k
R171
10k
R172
22k
R173
47k
R174
1k
R108
2.2k
R167
2.2k
R166
S106
2CH/
A.DIRECT
S105
A.F.D.
S104
MOVIE/
HD-D.C.S.
S103
MUSIC
S102
DISPLAY
S101
DIMMER
S100
MUTING
S108
S109
TUNING -
S110
TUNING MODE
S111
INPUT MODE
J101
L
VIDEO
R
AUDIO
VIDEO 2
IN
(CHASSIS)
1
2
3
CL196
CL195
CL109
CL110
C197
2200p
C195
2200p
22k
R191
10k
R192
4.7k
R182
10k
R181
5P
CNP180
AD1
2
1
NC
3
PW_SW
4G
N
D
5
TONE_JOG
S183
"/1
S181
SPEAKERS
S180
TONE MODE
EN180
TONE
CONVERTER
TRANSFORMER
T141
CPH5504-TL-E
Q141
SWITCHING
TRANSISTOR
PNA4823M03S0
IC151
REMOTE CONTROL
SIGNAL RECEIVER
IC151
AUDIO AMP
IC101
IC B/D
C
DIGITAL
BOARD
(2/4)
CN2116
(Page 23)
O
USB BOARD
CN4101
(Page 44)
9
Ver. 1.1