Sony CDX-L550X Service Manual page 28

CDX-L550X/L570X
• IC BLOCK DIAGRAMS
IC1 µPD63711GC-8EU
75 74 73 72 71 70 69 68 67 66
AGCI 76 EFM
COMPARATOR
RFO 77
EQ2 78
EFM D/A
EQ1 79
AUTO GAIN
RF- 80
CONTROLLER
AGND 81
ADDER
A
82
FEOFS
C
83 SVDRAM
TEOFS
MULTIPLIER
B 84
RF
D 85
SVROM
AMP BLOCK
F 86
EFM
E 87
CLV
AVDD 88
PROCESSOR
REFOUT 89
SWITCH
FE- 90
DEFECT
DEFECT
COMPARATOR
FEO 91
FOK
RFENV
TE- 92
A3T
MIRENV
TEO
93
MIRR
TE2 TRACKING
94
REGISTER
FEO
TEC 95
FOCUS
TEO
REGISTER
AGND 96
COMPARATOR
PD 97
LD 98
PN 99
AVDD 100
MICROCOMPUTER INTERFACE
1 2 3 4 5 6 7 8 9 10
65 64 63 62 61 60 59 58 57 56 55 54 53
MICROCOMPUTER INTERFACE
CD-TEXT DECODER
SUB-CODE PROCESSOR
MEMORY 16K
PROCESSOR SRAM
FD/TD/SD/MD
CONTROLLER
DIGITAL PLL
EFM DEMODULATOR
SVCRAM
TIMING GENERATOR
ROM
DECODER
D/A
INTERFACE
CIRCUIT
DE-EMPHASIS CIRCUIT
OCTUPLED
OVERSAMPLING DIGITAL FILTER
NOISE SHAVER NOISE SHAVER
OUTPUT BUFFER OUTPUT BUFFER
SCF
OSC
11 12 13 14 15 16 17 18 19 20 21 22 23
52 51
50 C2D3
49 C2D2
48 C2D1
47 C1D2
46 C1D1
45 DGND
44 PLCK
43 MIRR/WFCK
42 RFCK
41 LOCK
40 DVDD
39 TSOI
38 C16M
37 DGND
DIGITAL
AUDIO
36 TX
INTERFACE
35 HOLD/WDCK
34 LRCK
33 LRCKIN
32 SCKO
31 SCKIN
30 DOUT
29 DIN
28 FLAG
27 EMPH
26 DVDD
24 25
28 28
IC2 BA5810FP
FWD 1
LOADING PRE
REV 2
FWD REV
–
LDCONT 3 X3
POWER
PS 4
SAVE
IN1 5
–
IN2 6
PREVCC
+ +
(PRE.LOADING)
PREVCC 7
POWVCC12
(CH1.CH2)
CH1-4
+ +
POWVCC 8 MUTE
POWVCC34
(CH3,CH4)
VOL–
9
VOL+ 10
10k
10k
10k
–
VO2– 11
LEVEL LEVEL
SHIFT
SHIFT
VO2+ 12
–
10k
10k
10k
10k 10k
10k
–
VO1– 13
LEVEL LEVEL
SHIFT SHIFT
VO1+
14
–
10k
10k 10k
IC901 BA4908-V3
REGULATOR
OVER VOLTAGE
PROTECT
–
+
1 2 3 4 5 6 7 8 9
BIAS
28
OPIN4+
27
26 OPIN4–
25 OPOUT4
24 OPIN3+
23 OPIN3–
OPOUT3
22
21 MUTE
20 POWVCC
GND
19
10k
–
18 VO3–
17 VO3+
10k
10k
–
16 VO4–
15 VO4+
10k
10 11 12