Sony CDX-838 Service Manual page 30

Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– RF Board –
IC11 CXA1992BR
39 38 37 36 35 34
PD 2 PD 1 PD LD
I-V AMP I-V AMP AMP AMP
RF SUMMING
AMP
VCC
LASER
POWER
CONTROL
IFB1 – IFB6
FE
40
BIAS
FOCUS BIAS
FOCUS ERROR
WINDOW
AMP
VEE
COMPARATOR
F I-V
F 41
AMP
TGH
TRACKING GAIN
E I-V TGFL
E 42
AMP WINDOW
TGL
COMPARATOR
BALH
EI 43
VEE 44 VEE
BALL
TEO
45
ATSC
T E
L 1 3 9 4 2 2 9 6 5 1 3
E-F BALANCE
LPFI 46 WINDOW
COMPARATOR
TEI 47
ATSC
ATSC 48 WINDOW
COMPARATOR
TZC
TZC 49
COMPARATOR
TM1
DFCT
TRACKING PHASE
COMPENSATION
TDFCT
50 TG1
VC 51
FZC
FZC 52
COMPARATOR
FOCUS PHASE
CHARGE UP
COMPENSATION
FS2
DFCT FS4
1 2 3 4 5 6 7 8
w w w
33 32 31 30 29 28 27
FOCUS OK
COMPARATOR
PEAK/BOTTOM MIRR
HOLD COMPARATOR
IIL
↓
TTL
PEAK/BOTTOM DEFECT
HOLD AMP
IIC DATA REGISTER, INPUT SHIFT REGISTER,
ADDRESS DECODER, SENSE SELECTOR,
OUTPUT DECODER
VCC
TM6
TM5
VCC
VEE
CENTER
VCC
VOLTAGE
TM7
GENERATOR
TM4
VCC
VEE
FS1
FSET
TM3
TG2
VEE VEE
9 10 11 12 13
x a o
y
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IC51 BA6297AFP
28 27 26
T.S.D
1
IC52 BA6287F
OUT1 1
26 SENS2
IIL
↓
25 SENS1
TTL
24 C. OUT
VM 2
23 XRST
DATA
TTL 22
↓
21 XLT
IIL
20 CLK
TSD
19 LOCK
Q Q
3 7 6
VCC 3
VCC 18 VCC
POWER
ISET 17 ISET
SAVE
FIN 4
16 SL O
15 SL M
– MAIN Board –
IC101 CXD2530Q
14 SL P
TM2
80 79 78 77 76 75 74 73 72
NC 81
VSS 82
VDD
83
NC 84
TES7 85
NC 86
VSS 87
XVDD 88
XTAI 89
XTAO 90
XVSS 91
VSS 92
NC 93
TES8 94
NC 95
VDD 96
VSS 97
NC 98
u 1 6 3
NC 99
XRST 100
1 2 3 4 5 6
30 30
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2 4
8 9 9
25 24 23 22 21 20 19 18
+
–
–
+
+ +
– –
2 3 4 5 6 7 8 9 10 11
8 GND
7 OUT2
DRIVER DRIVER
3 1 5 1 5 0 8 9
6 VREF
CONTROL LOGIC
5 RIN
71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
ERROR
CORRECTOR
D / A
EFM
INTERFACE
DEMODULATOR
16K RAM DIGITAL OUT
SUB CODE
PROCESSOR
m
c o
TIMING
SERVO
LOGIC CPU
AUTO
INTERFACE
. DIGITAL CLV
SEQUENCER
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
2
8 9 9
17 16 15
–
+
MUTE
+
–
12 13 14
2 4 9 8 2 9 9
50 LRCK
49 WDCK
48 ASYE
47 ASYO
ASYMMETRY
46 ASYI
CORRECTOR
45 BIAS
44 RF
43 AVDD
42
CLTV
DIGITAL
41 AVSS
PLL
40 FILI
39 FILO
PCO
38
VCTL
37
OSC
36 V16M
35 VCKI
CLOCK
34 VPCO1
GENERATOR
33 VPCO2
32 TES1
31 TES0