Sony CDX-646 Service Manual page 29

– MAIN Board –
IC101 CXD2598Q
80 79 78
BCK 81
BCKI 82
ENPH 83
EMPHI 84
XVDD 85
SERIAL-IN
INTERFACE
XTAI 86
TIMING
LOGIC
XTAO 87
OVER SAMPLING
XVSS 88
DIGITAL FILTER
AVDD1 89
3rd-ORDER
NOISE SHAPER
LOW-PASS
AOUT1 90
PWM
FILTER
AIN1 91
–
LOUT1 92
+
VC
AVSS1 93
AVSS2 94
VC
+
LOUT2 95
–
AIN2 96
LOW-PASS
AOUT2 97
PWM
FILTER
SERVO
INTERFACE
AVDD2 98
RMUT 99
LMUT 100
1 2 3 4 5
IC301 LB1930M-TLM
VCC 1
BUFFER
NC 2
IN1 3
CONTROL
CIRCUIT
4
IN2
BUFFER
S-GND 5
77 76 75 74 73 72 71 70 69
CLOCK
GENERATOR
D/A DIGITAL
INTERFACE OUT
32k ERROR
RAM CORRECTOR
INTERNAL BUS
DEMODULATOR
SUB CODE
PROCESSOR
SERVO
AUTO
SEQUENCER
CPU
INTERFACE
6 7 8 9 10 11 12 13 14
IC302 BA8272FV-E2
NC
10
OUT1
9
MOTOR
DRIVE
8 NC
CIRCUIT
7
OUT2
6 P-GND
68 67 66 65 64 63 62 61 60 59
DIGITAL ASYMMETRY
PLL CORRECTOR
EFM
15 16 17 18 19 20 21 22 23
14 13 12 11 10 9
2 3 4 5 6
1
58 57 56 55
OP AMP
A/D
ANALOG
CONVERTER
SWITCH
SERVO DSP PWM GENERATOR
FOCUS PWM
FOCUS SERVO
GENERATOR
TRACKING TRACKING PWM
SERVO GENERATOR
SLED PWM
SLED SERVO
GENERATOR
DIGITAL
MIRR
DFCT
FOK
24 25 26 27 28
IC304 NJM2395AF08
IC305 NJM2395AF05
8
RESET
SWITCH
1 2
7
54 53 52 51
50 FE
49 VC
48 XTSL
47 TES1
46 TEST
45 VSS
44 VDD
43 FRDR
42 FFDR
41 TRDR
40 TFDR
39 SRDR
38 SFDR
37 FSTIO
36 SSTP
35 MDP
34 LOCK
CLV
33 PWMI
32 FOK
31 DFCT
29 30
CONTROL
3 4
29