Block Diagram -Cd Section - Sony CDX-C680 Service Manual

CDX-C680/C780
4-3. BLOCK DIAGRAM — CD SECTION —
OPTICAL PICK-UP RF AMP, LD-APC ERROR AMP
KSS-520A IC1
3 PD1
4 PD2
INVERTER
7 E
6 F
PD
2 PD
LD DRIVE
1 LD LD ON
Q3
LD
TRACKING/FOCUS COIL DRIVE,
SLED MOTOR DRIVE
IC7
2 TR+
TRACKING
1 TR-
14 F+
FOCUS
13 F- MUTE
16 S+
M902
M
(SLED)
17 S-
SPINDLE MOTOR DRIVE
IC601
12 DROUT+ OP IN-
M901
M
(SPINDLE)
13 DROUT- OP IN+
Signal path
: CD
5V REG
MD5V
Q401
CD
LPF
D/A5V CONTROL
IC404
Q404, 405
CD5V
04
– 37 –
DIGITAL SERVO/
DIGITAL SIGNAL PROCESSOR
IC501
RFO 17 59 RFDC PCMD 89 9 DATI
LRCK 87 10 LRCI
FE 16 55 FE
TE 14 57 TE WDCK 85 11 WDCI
BCK 91 7 BCKI
CD5V C4M 84 3 C4M
DOUT 33 2
80 SSTP
SW3
SCOR 28 59 SCOR
(LIMIT)
XROF 27 4 XROI
RFCK 25 5 RFCK
19
GTOP 21 6 GTOP
WFCK 20 1 WFCK
7
EXCK 7 42 XWRE
8
SBSO 6 43 WRDE
9
44 XLT
10
47 XSOE
11
48 SDTO
OP+ 23 71 TFDR 12
57 XQOK
13
OP- 24 72 TRDR
58 GSCR
14
OP+ 10 73 FFDR
63
OP- 11 74 FRDR
9
CLOK 14 46
OP+ 20
69 SFDR
OP- 19 70 SRDR
1
SQCK 8
2
SQSO 9
3
SENS 10
4
SCLK 11
5
GFS 24
6
FOK 37
25 79 MDP DATA 12
24 VC
67 CD DATA
4
42 SCLK
6
54 FOK
5
55 GFS
3
57 SENS
1
65 SCK 2
2
66 SI 2
20 LD ON
9 DRV OE
SW4 10 D SW
(DOWN)
SW1
62 IN SW
LOADING MOTOR DRIVE
(DISC IN)
IC6
SW2 63 SELF SW
(SELF)
9 L+
M903
M LMOT1 2
14 LM EJ
(LOADING)
7 L- LMOT2 4 15 LM LOM
31 X IN
POWER
CONTROL BATT X1
Q402, 403
10MHz
32 X OUT
SWITCH
BU5V
Q1, 5
SWITCH
17 CDMON
MD5V
Q2, 4
18 CD ON
DRAM CONTROLLER D/A CONVERTER
IC2 IC401
LINE AMP
IC403
3
DATA 16 2 DATA VOUTL 16
BCK
15 3 BCK
VOUTR 13 R-CH
LRCK 17 1 LRCK
XTAI 14 4 CLKO XTI 5
27 DM1
DIN XTO 6
X401
16.9344MHz
DRAM
IC4
20 5
| •
23 9
|
•
A0-A9 A0-A9
25 12
• •
34 14
| |
38 18
28 1
| •
D1-D4
31 2
D1-D4
•
GRST
XRAS 26
24
•
XWE 27
25
SCK
XCAS 32
4 XRAS
XOE 33
3 XWE
SDTI 45
23 XCAS
22 XOE
CD SYSTEM CONTROL
IC5
EMPH O 16
12
ESPXQOK 43
11
EEPROM
ESPSDT 44
14
IC551
GRSRST 45
13
GRSCOR 46
7
ESPXWRE 68 1 EXCK
8
2
ESPXRDE 69 SBSO
9
ESPXLT 70 4 WFCK
10
ESPXSOE 71 5 MCK
SCOR 56 3 SCOR
CLK 48
11 SCLK
TX DATA 49 12 SRDT
CE 64 13 DQSY
CD CKO 59
2
TUNER SECTION
AMUT 19 AMUT
BUS ON 61 BUS ON
BUS SI 52 BUS SI
4
DISPLAY SECTION
BUS CLK 51 BUS CLK
LNK OFF 8 LINK OFF
BU IN 60 BU IN
RESET 30 RESET 3
DISPLAY SECTION
BUS SO 53 BUS SO
– 38 –
1
1
CDINL TUNER
SECTION