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4-2. BLOCK DIAGRAM — CD SECTION —
OPTICAL PICK-UP
RF AMP, LD-APC ERROR AMP
KSS-521A
IC1
3 PD1
RFO
17
4
PD2
FE
16
INVERTER
7 E
TE
14
6 F
PD
2 PD
LD DRIVE
1 LD
LD ON
19
Q3
LD
TRACKING/FOCUS COIL DRIVE,
SLED MOTOR DRIVE
IC7
2 TR+
OP+
23
TRACKING
OP-
24
1 TR-
OP+
10
14 F+
OP-
11
FOCUS
13 F-
MUTE
9
OP+
20
16 S+
M902
OP-
19
M
(SLED)
17 S-
SPINDLE MOTOR DRIVE
IC601
12 DROUT+
OP IN-
25
M901
M
(SPINDLE)
13 DROUT-
OP IN+
24
Signal path
: CD
POWER
5V REG
CONTROL
MD5V
Q401
Q402, 403
CD
5V REG
D/A5V
CONTROL
IC404
Q404, 405
CD5V
04
– 31 –
DIGITAL SERVO/
DIGITAL SIGNAL PROCESSOR
DRAM CONTROLLER
IC501
IC2
59 RFDC
PCMD
89
9 DATI
LRCK
87
10 LRCI
55 FE
57 TE
WDCK
85
11 WDCI
BCK
91
7 BCKI
CD5V
C4M
84
3 C4M
DOUT
33
2
DIN
80 SSTP
SW3
SCOR
28
59 SCOR
(LIMIT)
XROF
27
4 XROI
RFCK
25
5 RFCK
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
71 TFDR
12
57 XQOK
13
72 TRDR
58 GSCR
14
73 FFDR
63
GRST
74 FRDR
CLOK
14
46
SCK
69 SFDR
70 SRDR
1
SQCK
8
2
SQSO
9
3
SENS
10
4
SCLK
11
5
GFS
24
6
FOK
37
79 MDP
DATA
12
CD SYSTEM CONTROL
VC
IC5
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
BATT
X1
10MHz
32 X OUT
SWITCH
BU5V
Q1, 5
SWITCH
17 CDMON
MD5V
Q2, 4
18 CD ON
D/A CONVERTER
IC401
LINE AMP
IC403
3
1
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
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
•
XRAS
26
24
•
XWE
27
25
XCAS
32
4 XRAS
XOE
33
3 XWE
SDTI
45
23 XCAS
22 XOE
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
– 32 –
CDX-C7850R
1
CDINL
TUNER
SECTION
(Page 35)
(Page 36)
(Page 33)
(Page 33)
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