Schematic Diagram - Display Board - Sony STR-DG820 Service Manual

6-25. SCHEMATIC DIAGRAM - DISPLAY Board -

1 2 3
DISPLAY BOARD
A
R787
4.7k
B
IC701
REMOTE CONTROL
RECEIVER
C701
C IC701 47
NJL24H400A 16V
3.3
VCC
1
3.3
OUT
2
GND
3
CN720
R718
14P
100
+12V_GND 1
D
2
NC
ADGND 3
STBY GND 4
FL_GND 5
AF
STBY +3.3V 6
JL786
AD1 7
JL785
MICOM
AD2 8
BOARD
CN7007
9
AD3
JL730
(Page 37)
E
SIRCS 10
JL784
FL_BK 11
JL722
FL_LAT 12
JL723
FL_CLK 13
JL724
FL_DATA 14
CNP718
6P
(Page 43) JL760
GND 1
F
LED AJ
2
NC
BOARD
JL764
CN719
LED_GREEN 3
JL763
4
LED_RED
POWER JL762
SW AK
PWR_SW 5
BOARD JL761
CN2
+3.3V 6
R773 100
(Page 47)
C760
CN713
100p
4P
JL749
AL
1
GND
G
NC 2
JL750
DCAC
L 3
JACK
BOARD 4
GND
CN718
(Page 43)
CN706
6P
JL765
GND 1
AM
NC 2
JL766
MIC OUT 3
JL701
FRONT
H
AD-GND 4
V2
JL767
BOARD
+7V 5
CN722 JL768
(Page 43) GND 6
JL751
CN707
7P
JL769
TONE +/-2 1
JL770
TONE +/-1 2
AN
JL771
TUNE +/-2 3
JL772
TUNE +/-1 4
I
JOG JL773
BOARD
ADGND 5
CN104
(Page 43) 6
JL774
AD3 7
STR-DG820
• See page 48 for IC Block Diagrams.
4 5 6
C768 Q713 C771 R793
C763 2200p 2SC3052EF-T1-LEF 0.022 100k
R796
22 MUTING
6.8k
16V R791
10k
R780
6.2k 0.1
D709
C765 MA2J1110GLS0
C767
R774
0
33p 1
47k R794
50V 1k
R782
56k
Q712
0
RT1P141C-TP-1
7
4 3 2 1
IC705
7
Q709, 710
MIC AMP LED DRIVE
R790 R733
5 6 7 8 10k 2.2k
3.4
FB701
2.7
0
C766
33p
Q709
RT1N141C-TP-1
R779
10k
C764 C769
C770
22 47
0.1
16V 16V
1 2 5 6
S708 S705
R727
MEMORY/ENTER DIMMER
R724
1k
7 8 9 10
Q714
RT1N141C-TP-1
0
7
Q712, 714
MUTING CONTROL SWITCH
1 2 3 4 5
Q701, 711
LED DRIVE
R735
R701
Q711
1k 1k
ISA1235AC1TP-1EF
2
3.3
2.7 R772
2.2k
3.3
2 3.3
0
0
Q701
RT1N141C-TP-1
R757
100
R758
R759
180 10k
R810 R809
10k
10k
C785
D710
22
MA2J1110GLS0
25V
R712 100
R711 100
R710 100
R709 100
ND701
FLUORESCENT INDICATOR TUBE
37 38 39 40 41 42 43 44 45 46
S704
2CH/ S703 S702 S701
R728 R729 R730
A.DIRECT
A.F.D. MOVIE MUSIC
4.7k 2.2k 2.2k 1k
39 39
11 12 13
IC B/D
IC708
+12V REGULATOR
IC708
SI-3010KM-TL
R731
5.6k
C784
100
25V
Q706
2SD1624T-TD-E
D704
MA113-(TX)
-0.4
D706 MA113-(TX)
T701 10.8
DC/DC
CONVERTER
D707
C715
MA113-(TX)
100
10 2
50V
R734
D705 JL716
27k
MA113-(TX)
C704 1 3
100p C716
0.1
C714
7 4
0.1
D708
JL715 JL741
MAZ8062GMLS0
C707
8
5
0.1
C780
R707 JL717
47
3.3
16V
9 6
C708
10
50V
C706
47
R708
16V
3.3
JL714 JL753 JL740
49 50
S715
1
ROTARY ENCODER
INPUT SELECTOR
JL738
JL739
JL727
3 1
R736
1k R704
0
S712 S711
2
INPUT MODE DISPLAY
STR-DG820
14 15 16 17
Q705, 706
OSC
Q705
2SD1624T-TD-E
-0.4
10.8
C713
3900p
200V
L701
100uH
C778
0.1
CN723
2
S722
15P
ROTARY
ENCODER
1 RN_GND
MASTER
2
NC
VOLUME
3
3 R2
JL781
4 R2_GND
5 MIC_MUTE
R717 100 JL780
6 VOL_2
AG
R716 100 JL779
7 VOL_1
JL778
8 FUNC_2
MICOM
JL777
9 BOARD
FUNC_1
C710 JL729 CN7006
2200p 10 TUNE_2
(Page 37)
JL776
11 TUNE_1
JL775
12 TONE_2
JL728
13 TONE_1
JL783
14 POW_SW_DET
JL721
15 LED_STB