Schematic Diagram - Servo Board (1/3) - Sony MV-900SDS Service Manual

MV-900SDS
3-3. SCHEMATIC DIAGRAM – SERVO Board (1/3) –
CN4
45P
ECR
EC
START
FG
FEED MOTOR+
FEED MOTOR-
ANODE
COLLECTOR
NC
NC
VCC
VCC
FEED LIMIT SW
GND
GND
TR+
FO+
TR-
FO-
NC
GND
VOS
LD(DVD)
GND
LD(CD)
PD
DVD_VR
CD_VR
NC
NC
GND
VREF
F2
F1
A
D
SW2
RF
SW1
C
B
E1
E2
VCC
GND
MGND
MVCC
(Page 13)
BUS1
MV-900SDS
• See page 10 for Waveforms. • See page 15 for IC Block Diagrams.
(1/3)
TC9 TC8
R52
22 47
10
6.3V 6.3V
SMOTOR
C63 R65
SSPDON
1 33
SFGIN
FEED+ Q2
2SB1132
FEED-
AUTOMATIC
DISC_OUT_DET POWER CONTROL
(FOR DVD)
DISC_IN_DET
C46
TC20 L5 D2 1000p
2.7 µH
47 RLS4148
6.3V
R55
HOMESW
2.2k
L6
2.7 µH
TRACK-
FOCUS+
TRACK+
FOCUS-
C84
1
C85
1
R102 2.4k F
R103 2.4k
R104 7.5k A
R105 7.5k D
GAINSW
RF
RFSW
R106 7.5k C
R107 7.5k B
R108 2.4k E
R109 2.4k
C72
1
TC10
R53
22
10
6.3V
R101 C100
10k 680p
Q3
2SB1132
AUTOMATIC
POWER CONTROL
(FOR CD)
D3 C47
RLS4148 1000p
R56
1.2k
CDRFDC
C83
680p
RF
DVDFRP
DVDRFN
C50
PD1
0.1
PD2
C53 680p
A2
C54 680p
B2
C56 680p
C2
C57 680p
D2
CP
C58
100p
CN
D
D
C
C
B
B
A
A
E R62 0
F
F R63 0
E
R64 10k
R66
10k
R82 R81
0 0
R202 R201
10k 10k
Q11
2SC2412K
R200
DVD ON SWITCH
10k
Q10
2SC2412K
INVERTER
R203
10k
Q12
2SC2412K
CD ON SWITCH
(Page 14)
12 12
R57
8.2k
C40 C41
0.1 0.1
C42 C43
0.1 0.1
SDEN
SDATA
SCLK
LCP
C55
0.047
LCN
CE
FE
TE
RF AMP,
MEI
FOCUS/TRACKING ERROR AMP
U6 MEV
SP-3721A
TPH
DFT
PI
MIN
MEVO
MLPF
TC11
47
6.3V
TC12
C66 C67
0.1 0.1
6.3V
REFERENCE VOLTAGE
GENERATOR,
COMPARATOR
U7
TL3472
VCC
R73
1.5k
GND
R80 C69
8.2k 0.1
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
RFO
R58 33 SCSJ
R59 33 SDATA
R60 33 SCLK
CEI
FEI
TEI
R61 0 TEXI
C59 1000p
SDFCT
SBAD
C62
150p
C64
4700p
C65
1000p
47
C68 R75
33p 10k
R74
56k
RFRP
C70 C71 R78
0.1 0.47 470k