Sony CDX-646 / CDX-646X Service Manual ▷ View online
26
26
CDX-646/646X
6-10.
PRINTED WIRING BOARDS – JACK/SWITCH Boards –
•
See page 19 for Circuit Boards Location.
6-11.
SCHEMATIC DIAGRAM – JACK/SWITCH Boards –
(Page 22)
(Page 23)
(Page 25)
(Page 25)
27
• Waveforms
– RF Board –
– RF Board –
1
IC101
qh
(RFO) (CD play mode)
2
IC101
qf
(FE) (CD play mode)
3
IC101
qd
(TE) (CD play mode)
2
IC101
ia
(BCK),
is
(BCKI)
(CD play mode)
3
IC101
ih
(XTAI) (CD play mode)
4
IC201
ra
(EXTAL) (CD play mode)
1.4
±
0.3
Vp-p
Apporx.
63 mVp-p
63 mVp-p
Approx.
63 mVp-p
63 mVp-p
– MAIN Board –
1
IC101
uj
(LRCK),
uk
(LRCKI)
(CD play mode)
5.7 Vp-p
470 ns
5.6 Vp-p
22.8
µ
s
4.1 Vp-p
60 ns
4.4 Vp-p
83 ns
28
1
2
3
4
9
10
11
12
5
6
7
8
23
22
20
18
16
15
14
19
17
13
21
APC LD
AMP
APC PD
AMP
RF SUMMING
AMP
FOCUS ERROR
AMP
RF EQ
AMP
AGC
F I-V AMP
E I-V AMP
COMPARATOR
COMPARATOR
TRACKING
ERROR
AMP
HOLD
AGCVTH
LD
PD
VEE
VEE
VCC
F
E
VC
A
B
C
D
LC/PD
24 VCC
LD ON
AGCCONT
RFTC
RFO
RFE
FE
RF BOT
RF I
TE
HOLD SW
INPUT
FWD
REV
VCC2
VLO–
VLO+
VO4+
VO4–
VO3+
VO3–
VO2+
VO2–
VO1+
VO1–
VCC1
VIN1
VIN1–A
VIN1+A
VIN1–B
S-GND
MUTE2
MUTE1
VIN4
VIN4–
VIN4+
VREF-IN
VIN1 (VREF)-SW
VREF-OUT (CH1)
REG-OUT
REG-IN
VIN3+
VIN3–
VIN3
VIN2+
VIN2–
VIN2
VIN1+B
OUTPUT
CONTROL
+
–
+
–
+
–
+
–
+
–
+
–
LEVEL
SHIFT
CH2-4
MUTE
THERMAL SHUT DOWN
CH1
MUTE
VIN1/VREF
SWITCH
5VREG
3
4
5
6
7
8
9
2
1
LEVEL
SHIFT
LEVEL
SHIFT
10
11
14
LEVEL
SHIFT
AMP-A
AMP-B
+
–
–
15
16
17
18
23
19
34
35
36
+
–
–
+
–
+
–
–
+
–
25
24
22
21
20
33
32
31
30
29
28
+
–
27
26
12
13
• IC Block Diagrams
– RF Board –
– RF Board –
IC101
CXA2596M-T6
IC201
LA6576L-TE-L
29
81
80
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
99
97
98
TIMING
LOGIC
CLOCK
GENERATOR
D/A
INTERFACE
DIGITAL
OUT
32k
RAM
ERROR
CORRECTOR
OVER SAMPLING
DIGITAL FILTER
3rd-ORDER
NOISE SHAPER
LOW-PASS
FILTER
VC
VC
DIGITAL
CLV
MIRR
DFCT
FOK
SERVO
AUTO
SEQUENCER
SERVO
INTERFACE
DIGITAL
PLL
EFM
DEMODULATOR
SUB CODE
PROCESSOR
CPU
INTERFACE
SERIAL-IN
INTERFACE
A/D
CONVERTER
OP AMP
ANALOG
SWITCH
PWM GENERATOR
79 78
77 76 75
74 73 72 71 70 69
68 67 66 65 64 63
62
61 60 59
58
57
56
55
ASYMMETRY
CORRECTOR
54 53 52 51
50
49
47
48
45
44
43
42
41
40
39
38
46
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
FOCUS PWM
GENERATOR
TRACKING PWM
GENERATOR
SLED PWM
GENERATOR
SERVO DSP
FOCUS SERVO
TRACKING
SERVO
SLED SERVO
INTERNAL BUS
PWM
100
LOW-PASS
FILTER
PWM
+
–
+
–
–
BCK
BCKI
ENPH
EMPHI
XVDD
XTAI
XTAO
XVSS
AVDD1
AOUT1
AIN1
LOUT1
AVSS1
AVSS2
LOUT2
AIN2
RMUT
AOUT2
AVDD2
LMUT
PCMDI
PCMD
LRCKI
LRCK
VDD
ASYE
DOUT
MD2
VSS
VPCO
V16M
VCTL
BIAS
AVDD3
PCO
FILI
FILO
CLTV
AVSS3
RFAC
ASYI
ASYO
AVDD0
IGEN
AVSS0
ADIO
RFDC
CE
TE
SE
FE
VC
TES1
XTSL
VSS
VDD
FRDR
FFDR
TRDR
TFDR
SRDR
SFDR
TEST
FSTIO
SSTP
MDP
LOCK
PWMI
FOK
DFCT
VDD
VSS
MIRR
COUT
WDCK
C4M
SCOR
C2PO
GFS
XPCK
XUGF
WFCK
ATSK
SCKL
SENS
CLOK
XLAT
DATA
SYSM
XRST
EXCK
SBSO
SCSY
SQCK
SQSO
XOLT
SOCK
SOUT
VSS
VDD
– MAIN Board –
IC101
CXD2598Q
IC301
LB1930M-TLM
IC304
NJM2395AF08
IC305
NJM2395AF05
IC302
BA8272FV-E2
1
2
2
3
4
5
6
7
8
9
10
VCC
IN2
S-GND
IN1
NC
NC
OUT2
NC
P-GND
OUT1
CONTROL
CIRCUIT
MOTOR
DRIVE
CIRCUIT
BUFFER
BUFFER
1
2
3
4
5
6
7
8
9
10
14
13
12
11
VCC
BUS ON
LINK OFF
CLK OUT
DATA OUT
DATA IN
BUS RESET
BUS DATA
VREF
BUS CLK
GND
BUS ON IN
BUS ON OUT
RESET
RESET
SWITCH
2
VOUT
3
GND
1
VIN
4
CONT
CONTROL
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