Schematic Diagram - Main Board (2/4) - Sony MV-900SDS Service Manual

6-8. SCHEMATIC DIAGRAM – MAIN Board (2/4) –
(2/4)
C83
0.022
CD NC
RESET SIGNAL
GENERATOR
IC2
PST3645NR
C81 C82
MA8068-L-TX 1000p
R47 R48 C80
0 10k 0.1
L41
C135
33p
C94
0.1
SD-RAM
HY57V641620HGTP
C90 C91
0.1 0.1
MV-900SDS
• See page 39 for Waveforms. • See page 41 for IC Block Diagrams.
D14
RB491D-T146
R46
0
D1
RB491D-T146
D/A CONVERTER
R78
IC6
33k
-HI
C92
1
C146
47
D12
L53 16V
RB491D-T146
C144
C143
47
0.1
16V
(Page 26)
C84 R54 R52
0.1 0 0
RB25
10
FLASH ROM
IC3
MBM29LV800TA
-70PFTN
R49
0
FB1
FB2
C701
1
R703
50V
22k
C703 R709 R711
1000p 3.3k 22k
R707
C709
3.3k
150p
R713 R715 R719
C711
1k 0 0
C147 10
C148
10 16V
0.1
16V
C713
100p
C793
100p
GND
LOW-PASS
C792 R708
100p 3.3k FILTER
VCC
IC701
RC45580R
C712
100p
C710
10
R714 R716 R720
16V
1k 0 0
C708
C704
L707 C702 150p
1000p
1
R704 R710 R712
50V
22k 3.3k 22k
D13
DAN202K
R87 R84 R83 R81 R82
47 33k 33k 3.3k 100k
Q1
2SA1037AK
Q2
R88 R85
2SC2412K
220k 220k
Q3
2SC2412K Q1,2
DELAY MUTING SWITCH R80
10k
C150
C149 R86
10
100p 120k
35V
L54
100µH
27 27
R57
0
R90
4.7k
R1734
0
C177 C178 R1710 C790
100p 100p 47k 100p
C794 C795 R727 R1709 C791
4700p 4700p 0 47k 100p
R1733
0
L314
22µH
Q701-704
R370 C396 D321
MUTING
56k 470p RB161L-
10TE25
R372
1.2k
R723
470
C395
R371 C394
470
22k 0.1
16V
R721 Q701 R725 Q703
4.7k 2SC2412K 4.7k 2SC2412K
C715 C717
0.1 0.1
L313
22µH
C714 C716
0.1 0.1
R722 R726 D320
4.7k 4.7k R368 RB161L-
18k 10TE25
Q702 Q704
2SC2412K 2SC2412K
R369
10k
R724
470
C390
C389
470
0.1
16V
C384
C385
100
0.1
16V
C382
C383
100
1000p
16V
C381
C379
100
0.1
16V
MV-900SDS
(CHASSIS)
L-CH_AUDIO
C797
1000p
AUDIO_GND
C796
4700p
R-CH_AUDIO
SWITCHING REGULATOR
IC306
XC63778103SR
LX
VIN
EXT1 C400
EXT2 0.1
GND
PBST
VOUT
CE
C392
C393
10
4700p
16V
(Page 28)
LX
VIN
EXT1 C387
EXT2 0.1
GND
PBST
VOUT
CE
IC305
XC63778103SR
SWITCHING REGULATOR
C386
C388
10
4700p
16V
L312
100µH
R377
150
+8V
C378
L311 C377 C376
220
0.1 0.1
16V