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MDX-C7970/C7970R
4-1.
BLOCK DIAGRAM – SERVO Section –
F
C
B
I
J
D
A
E
DETECTOR
LASER DIODE
ILCC
PD
LD
OPTICAL PICK-UP
(KMS-241B/J1NP)
M901
(SPINDLE)
M902
(SLED)
2-AXIS
DEVICE
FCS+
FCS–
TRK+
TRK–
05
SECTION 4
DIAGRAMS
48 47
I
I
RFO
1
RF AMP
46
J
J
2
B.P.F.
3T
TEMP
B
WBL
ADFM
AT
B.P.F.
29
A
AMP
A
4
B
5
I-V
ABCD
C
6
AMP
AMP
D
7
FOCUS
C
ERROR AMP
D
E
E
8
I-V
TRACKING
F
F
AMP
ERROR AMP
9
AUTOMATIC
APC
POWER
LD/PD
11
CONTROL
AMP
V-I
Q302
CONVERTER
PD
PD
10
12
20
+3.3V
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC303
PSB
16
SPFD
6
OUT4F
IN4R
3
IC306
M
SPRD
8
OUT4R
IN4F
4
APCREF
83
SFDR
27
OUT2F
IN2F
29
92
M
SRDR
25
OUT2R
IN2R
30
91
FFDR
21
OUT1F
IN1F
19
88
FRDR
23
OUT1R
IN1R
18
89
TFDR
12
OUT3F
IN3F
14
86
TRDR
10
OUT3R
IN3R
15
85
– 23 –
EFMO
100
FILI
59
PCO
58
PLL
CLTV
61
FILO
60
RF AMP,
FOCUS/TRACKING ERROR AMP
IC302
ASYO
51
ASYI
52
COMPA-
AGCI
RF
RFI
RF AGC
RATOR
40
38
55
& EQ
EQ
AUX
33
WBL
PEAK
37
PEAK &
BOTM
BOTTOM
36
ADIP
ADIN
ADFG
30
32
78
DEMODULATOR/
DECODER
ABCD
35
FE
F0CNT
SPINDLE
34
79
SERVO
TE
26
SE
28
94 93
COMMAND
SERIAL/
PARALLEL
CONVERTER,
DECODER
16
17
18
PEAK HOLD
ABCD
Q301
+3.3V
13
66
75
64
65
74
73 62
63
RECP
AUTOMATIC
POWER
31
EXTAL
CONTROL
ANALOG MUX
X501
10MHz
32
XTAL
A/D CONVERTER
DIGITAL
SERVO
SIGNAL
FROM CPU
PROCESS
INTERFACE
XLRF
80
LOADING
AUTO
CKRF
81
MOTOR DRIVE
SEQUENCER
DTRF
IC305
82
DIGITAL SERVO
SIGNAL PROCESSOR
IC301 (2/2)
(LOADING)
15
IC301 (1/2)
TX
ADDT
23
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER, 2M BIT D-RAM
SAMPLING
RATE
CONVERTER
DIN
DIGITAL
21
AUDIO
DOUT
22
INTERFACE
DADT
24
D-RAM
SUBCODE
INTERNAL BUS
PROCESSOR
CPU
MONITOR
INTERFACE
CONTROL
10
12
11
14
9 8
5 6 7
1 2 3 4
5
13
3 1
LEVEL SHIFT
LEVEL SHIFT
IC502
IC503
6
12
4 2
TH501
59
62
55
54 52
45 51 64
26 27 28 29
39
MD MECHANISM CONTROLLER
IC501 (1/2)
7
6
63
11
5
4
RIN
FIN
LOADING START/
LOADING
EJECT END
END
OUT1 OUT2
ON: When completion of
ON: When the disc loading start
the disc loading.
1
7
and the disc eject completion.
M903
M
– 24 –
• SIGNAL PATH
: MD PLAY
IC301 (1/2)
(Page 27)
DADT, BCK, LRCK, FS256
A
26
25
27
OSCI
X301
512FS OSC
16
CLOCK
22.5792MHz
IC304
OSCO
GENERATOR
17
XOE
41
22
OE
XWE
45
3
WE
XRAS
44
4
RAS
XCAS
42
23
CAS
D-RAM
IC307
(Page 27)
RESET
RESET, EMPHASIS
B
66
LOCK
C
LOCK
21
(Page 27)
MD-ATT
A-MUTE
D
67
(Page 27)
56
(LIMIT)
ON: When the optical pick-up is
inner position.
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