Diagrams; Block Diagram - Rf/Servo Section - Sony SCD-XB780 Service Manual

SCD-XB780
SECTION 5

DIAGRAMS

5-1. BLOCK DIAGRAM – RF/SERVO Section –
DETECTOR
OPTICAL PICK-UP
BLOCK
(KHM-234AMA)
DVD/CD PD
MODULE
CIRCUIT
2AXIS
DEVICE
FOCUS/
TRACKING
COIL
SP ERR
1
(Page 21)
RF
DVDRFP
1
MUX ATT
RFSIN
63
A A2
3
B
B2
4
GCA,
C
C2
EQ
5
D D2
6
E
VC
SUMMING AMP CD E
F 18
IC004 (1/4)
CD F GCA
17
G
A
A
SUMMING AMP
12
H
IC004 (2/4)
B B
11
C
C
10
VC
D D
9
(+2.5V) MUX
A CD A
16
B CD B
15
C CD C
14
D
CD D
13
AUTOMATIC POWER
DVD LD DVDLD
CONTROL (FOR SACD) 21
Q001
AUTOMATIC POWER DUAL
CD LD
CDLD
22
CONTROL (FOR CD) APC
Q003
DVDPD
23
CDPD
24
DVD VR
PHOTO DIODE
CONTROL SWITCH DVDPDSW
(FOR SACD)
Q005
CD VR
PHOTO DIODE
CONTROL SWITCH
(FOR CD)
Q004
FOCUS/TRACKING COIL DRIVE,
SLED MOTOR DRIVE
IC502
FCS+
12 FOCUS COIL 5
FCS–
DRIVE
11 6
STBY1
9
TRK+
14 2
TRACKING COIL
TRK–
DRIVE
13 3
17 SLED MOTOR 24
M2
M
DRIVE
(SLED) 18 23
20
STBY2
SPINDLE MOTOR 27
25
DRIVE
26
M3
M M
(SPINDLE)
M151
M M
(LOADING)
AIP
ATON FNP
INPUT PROGRAMMABLE
61 59 53
AIN BIAS, EQ FILTER
ATOP FNN
62 60 52
AGC DIFFERENTIATOR
AGCO
+
CLAMP&
– ENVELOPE
+
SEL
–
LEVEL DAC
PHASE
COMPARATOR MUX L. P. F. SUB
DETECTOR
+
–
A
+
GCA +
C
+
L. P. F.
GCA –
L. P. F. B
+
+
D
+
L. P. F.
+
AGCO
SACD/CD RF AMP, ENVELOPE
FOCUS/TRACKING ERROR AMP
IC001
4 4
TRACKING COIL DRIVE TRACKING COIL DRIVE
CONTROL SWITCH CONTROL SWITCH
IC501 IC505
1 2 1 2
MUTE 2D
SPINDLE/LOADING MOTOR DRIVE
IC512
SPDA
8
SPINDLE MOTOR
15 16 BUFFER 17
9 DRIVE
MUTE2 SP ON
13
MUTE1
MUTE LOAD
2
LOAD OUT
6
LOADING MOTOR 21
24 23 BUFFER
LOAD IN
5 DRIVE
22
20 20
DIP
54
RFAC
57
DIN
55
FULL WAVE
RECTIFER
AGC
CHARGE PUMP
TE TE
OFFSET
GCA 39
CANCEL
SDATA SDATA
47
SERIAL
SCLK SCLK
PORT 46
SDEN SDEN
REGISTER
48
FE
MNTR 42
OFFSET FE
GCA 40
CANCEL
PI PI
OFFSET PI ERROR AMP
38
CANCEL IC004 (3/4)
MEVO
MUX 32
BOTTOM
INPUT MIN
31
BUFFER
PEAK/
MIRR
BOTTOM 27
HOLD
LDON
26
40 41 39 43
DIGITAL SERVO
PROCESSOR
IC509 (1/2) A/D
CONVERTER
FFDR
33
FRDR
34
FOK
22
FOCUS
DFCT, FOK MIRR
TFDR TRACKING/SLED 20
31 DETECTOR
DFCT
SERVO DSP
TRDR 21
32
COUT
SFDR 19
SERVO
29
SCLK
SRDR INTERFACE 8
30
SERVO AUTO
SEQUENCER
TO CPU INTERFACE
26
S1
(LIMIT)
D+3.3V
RFAC
2
(Page 21)
• SIGNAL PATH
: SACD PLAY
: CD PLAY
TE, FE, PI
3
(Page 22)
SDATA, SCLK, SDEN
4
(Page 22)
AVC
AVC BUFFER
A+3.3V
(+1.65V)
IC004 (4/4)
WAVRB BUFFER
WAVRB D+5V
IC503 (1/2)
DRVC DRVC BUFFER
D+5V
(+2.5V) IC503 (2/2)
LDON
5
(Page 21)
DVDPDSW, CDPDSW
6
(Page 22)
TRKSW
7
(Page 22)
FOK, MIRR,
COUT, SCLK
FOK
8
(Page 22)
MIRR
COUT
SCLK
LIM SW
9
(Page 22)
SPDA, F JMP1/2
10
(Page 21)
SPIN
11
(Page 21)
MUTE 2D, SP ON, MUTE LOAD
12
(Page 22)
LOAD IN/OUT
13
(Page 22)