Read Sony HCD-DX70 Service Manual online
HCD-DX70
22
22
6-2. BLOCK DIAGRAMS
– TUNER/CD SECTION –
: FM
: AM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
FM 75
Ω
G
AM
TM1
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
FE1
DX7,DX7J MODEL
JR9
+B
A+12V
Q2
FM
10
FM OSC
16
AOUT
20
AIN
19
PD
18
PLL
IC51
12
FM/AM IF
7
FM
15
AM OSC
9
VCO STOP
8
IF REQ
6
DO
4
DI
5
CL
3
CE
XIN
1
XOUT
22
X51
4.5MHz
RF IF
AMP
AMP
Q1
CF1
CF2
DO
DI
CL
CE
2
11
4
9
RB4
6
3
10
7
8
1
2
AM MIX OUT
IF OUT
9
FM
11
OSC FM
24
VCO STOP
12
IF REQ MUTE
10
AM RF IN
21
AM OSC
23
VCC
9
FM IF
1
AM/FM IF MPX
IC11
13
L OUT
14
R OUT
BUFFER
Q11
LPF11
LPF
4
AM IF IN
IF11
R-CH
A
MAIN
SECTION
6
TUNED
7
STEREO
RV11
ST MUTE
21
CE
22
CL
27
MC DI
25
MC DO
23
STEREO
2
TUNED
3
MASTER CONTROL
IC501(1/2)
DO
CL
CE
DI
DI
OPTICAL PICK-UP
BLOCK
(A,MAX3)
+5V
LD
DRIVE
Q101
RF AMP
IC103
VC
27
A
6
B
7
C
VCC
8
D
9
E
10
F
11
LD
1
PD
2
IC102
MOTOR/COIL DRIVE
CH1OUTR
13
CH1OUTF
14
CH2OUTR
11
CH2OUTF
12
CH3OUTR
18
CH3OUTF
17
M
M102
SLED
MOTOR
CH4OUTR
16
CH4OUTF
15
M
M101
SPINDLE
MOTOR
3
CH1RIN
2
CH1FIN
6
CH2RIN
5
CH2FIN
23
CH3RIN
24
CH3FIN
25
CH4INSIN
20
MUTE
MDP
26
SFDR
28
SRDR
29
TRDR
31
TFDR
30
FRDR
33
FFDR
32
SSTP
27
DIGITAL SIGNAL PROC.
D/A CONV.
IC101
DIGITAL SERVO
60
D OUT
29
RFDCI
28
RFDCO
16
FE
18
TE
22
VCC
12
HOLD SW
RFDC
43
FE
39
TE
41
SE
40
RFAC
51
15
72
L OUT1
DIGITAL
OUT
OPTICAL
CD
DIGITAL OUT
IC201
75
L OUT2
5
DATA
B
MAIN
SECTION
R-CH
L OUT
L-CH
7
CLOK
6
XLAT
2
SQCK
9
SCLK
20
SCOR
1
SQSO
66
XTAI
67
XTAO
3
XRST
X101
16.9344MHz
CD DATA
35
CD CLK
37
XLT
42
SQ CLK
33
SCOR
19
SQ DATA
32
XRST
43
HOLD
41
TBL ADDRESS
SENSOR
49
T SENS
IC711
48
BU UP/DOWN SW
46
OPEN SW
47
CLOSE SW
44
MTR CNT2
OPEN/CLOSE
S701
BU UP/
DOWN
S711
45
MTR CNT1
MOTOR
DRIVE
9
7
4
2
M
IC701
TURN
MOTOR
M721
(Page 23)
(Page 23)
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