Sony HCD-RG55 Service Manual page 44

HCD-RG55/RG55S
• IC BLOCK DIAGRAMS
IC731 LA9242M (CD BOARD)
64 63 62 61 60 59 58 57
APC REF
RF DET
FIN2 1 VCA
FINI 2
I / V
E 3
F 4
BAL VCA
INTERFACE
TB 5
TE- 6
+
TE
-
TE
7
TESI
8
T. SERVO & T. LOGIC
SCI 9
TH 10
TA 11
TD- 12
- +
F. SERVO & F. LOGIC SPINDLE SERVO
TD 13
JP 14
+ -
+
-
TO 15
FD 16
17 18 19 20 21 22 23
IC751 LC78622NE (CD BOARD)
9 6 4 3 5 7
DEFI 1
Slice level VCO clock oscillator
control Clock control
EFMIN 10
Synchronization
FSEQ 22 detection
EFM demoduration
CLV+ 12
CLV digital
servo
CLV- 13
V/P 14
PW
49
SBCK Subcode
51
separation
SBSY
47 QCRC
SFSY 50
CS 63
WRQ 53
Microprocessor
interface
SQOUT 55
CQCK 57
COIN 56
Servo General-purpose
command ports
RWC 54
15 16 17 20 19 58 18 34 24 25 26 27 28 29 48 60 61 46 52 45 44 43 39 41 42 40 37 35 38 36
56 55 54 53 52 51 50 49
48
NC
47 TBC
46 FSC
45 DGND
∝-COM
LSC
SLI
44
+ -
43 SLC
42
RFS-
+ -
41 RFSM
RF AMP
40
CV+
39 CV-
38 SLOF
37 HFL
36
TES
35 TOFF
34 TGL
SLED SERVO 33 JP+
+ - +
-
24 25 26 27 28 29 30 31 32
21 2 59 64 11 32 33 62 23 8
2k x 8-bit RAM RAM address
generator
Interpolation
and muting
Bilingual
Digital
output
C1 and C2 error detection
and correction Digital
attenuator
Flag processing
8x oversampling
digital filters
1-bit DAC
L.P.F
Crystal oscillator system
Timing generation
IC781 BA6898FP (CD BOARD)
28
LEVEL SHIFT
1
IC701 BA6956AN (DRIVER BOARD)
1
IC101 LA1845 (MAIN BOARD)
30 C2F
31 DOUT
24
ALC
BUFF
LEVEL
DET
FM
IF
1
44 44
27 26 25 24 23 22 21 20 19 18 17
VCC VCC
LEVEL SHIFT LEVEL SHIFT
THERMAL
SHUT DOWN
DRIVER MUTE
REG VOLTAGE DOWN,
BIAS VOLTAGE DOWN,
THERMAL SHUT DOWN
MONITOR
LEVEL SHIFT
2 3 4 5 6 7 8 9 10 11 12
TSD
CONTROL LOGIC
2 3 4 5 6 7 8 9
23 22 21 20 19 18 17 16
AM
AM AM
PF.AMP
OSC MIX
DEOODER
AGC ANTI-BIRDIE
P-DET
STEREO
AM AM
ø
SW
IF DET
AM/FM
IF
COMP
S-CURVE
BUFF FF
VCO
304kHz 38k
TUNING
FM
DRIVE
DET
REG GND
V CC
2 3 4 5 6 7 8 9
16 15
13 14
15 14 13
PILOT
CANCEL
FF FF
PILOT
π
19k 19k 0 DET
2
10 11 12