Block Diagram - Cd Section - Sony PMC-MD55 Service Manual

6-3. BLOCK DIAGRAM – CD Section –
MAIN BOARD (2/5)
OPTICAL PICK-UP
RF AMP, FOCUS/TRACKING SERVO
BLOCK
IC701
CN701
(KSS-213C) VC
1
46 VC
+
5 PD1
RF AMP
36
–
– 6
PD2
37
+
–
7
+
+ 4
–
ILL DATA
REGISTER
+ 3 E
FE AMP
39
– INPUT SHIFT,
REGISTER
– 8 F
38
ADRESS
+
DECODER
AUTOMATIC
OUTPUT
10
POWER LD
DECODER
LD 34
CONTROL
Q701
APC TRACKING PHASE
COMPENSATION
12
PD
PD 35
12
TRACKING/FOCUS COIL DRIVE,
SLED MOTOR DRIVE
IC703
14 T+
T+
17
TIN
(TRACKING)
19
15
T- T–
18
F+ 13 F+
26
FIN
(FOCUS) 25
16 F–
F-
27
CN702(1/2)
4 4
SL+ SL+
11
SLIN
M1001
M
10
(SLED)
SL– 2 2 SL–
12
CN1001
MUTE
(1/2) MUTE DRIVE 7
SPINDLE MOTOR
DRIVE
IC1001 BUFFER
IC1002
OUT4+
15
MOTOR
M1002 M IN4
DRIVE 27 CONTROL 1
(SPINDLE)
Q1002-1005
OUT4–
16
MUTE4
26
MUTING
Q1001
S1001
(LIMIT) Q1007
B+
B+ SWITCH
Q1006
CD MOTOR BOARD
05
– 37 –
DOUT
53
BCK BCKI
43 44
RFO EFM PCMD PCMDI
RF D/A
31 35 41 42
DEMO. I/F LRCK LRCKI
39 40
FOK FOK
25 18
EMPH EMPHI
54 55
SUB CODE
C.OUT CNIN
PROCESSOR
IIL 22 11
SENS1 SEIN
23 10
SENS2
24
TTL
CLV
SERVO
CPU
DATA DATO
20 12
I/F
TTL
XLT XLTO
19 13
CLK CLKO
18 14
IIL XRST
21 79 XRST
FOCUS PHASE
COMPENSATION
DIGITAL
CLV
5 15 32
17
21 15
HIGH SPEED SWITCH
Q705
CD O/C BOARD
CD LID CLOSE
DETECT
Q762
M703
CD LID
OPEN/CLOSE
B+
(MOTOR)
Q765
CN1001 CN702
(2/2) (2/2)
5 5
2
1 1
8 8
7 7
3 3 B+
(UNREG +8V)
9 9
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC702
AOUT1
PWM 65
SERIAL
I/F
AOUT2
PWM 76 R-CH
SYSM
62 82 CD-MUTE
SCOR
57 78 CD-SCOR
SENS
6 77 CD-SENSE1
SQSO
5 79 CD-SQSO
SQCK
4 81 CD-SQCK
XLAT
8 75 CD-XLAT
CLOK
9 74 CD-CLK
DATA
7 76 CD-DATA
XTAI 70
X701
33.8688MHz
XTAO 71 SYSTEM
CONTROLLER
IC405(2/4)
83 CD-FOK
91 CD-XRST
84 CD-SENSE2
68 HI-SPEED
CN711 CN404
7 7
10 CD-TURN
CD LID OPEN/CLOSE MOTOR
DRIVE
IC711
M– 5 5
OP
1 5 12 CD-OPEN
M
DRIVE
M+ CL 4 4
7 4 13 CD-CLOSE
VREF
6
MOTOR
CONTROL
Q763
MOTOR
SELECT
B+ SWITCH
MOTOR
Q764 1 1
CONTROL 93 SPEED-L
Q766
3 3 B+ SELECT-GND
(CD6V)
6 6
S762
48 CD-DOOR
CD LID CLOSE
DETECT
S761
CD LID OPEN
DETECT
TU-SFT
34 CD-12HISP
+3.3V
B+ B+
REGULATOR
(+3.3V) (CD +6V)
Q703
32 80 100 43 42
CD POWER
D704 REGULATOR CONTROL
Q702
X401
8MHz
R-CH : Same as L-CH.
– 38 –
CN704
2
D-OUT
H
(Page 36)
CD L-CH
K (Page 41)
L (Page 41)
B+(BU3.3V)
51
44
TX 87
X402
32.768kHz
TEX 86
39
LEVEL
SHIFT
Q406
P-CON
M
(Page 44)
• SIGNAL PATH
: CD PLAY
: MD REC (DIGITAL)
PMC-MD55
– 39 –