Sony XR-CA640X Service Manual ▷ View online
XR-CA640X
26
26
6-11. PRINTED WIRING BOARD – KEY Board –
KEY BOARD
(COMPONENT SIDE)
1-683-349-
11
(11)
LCD901
LIQUID CRYSTAL DISPLAY
1
93
46
47
MODE
MBP
A
K
SOURCE
DSPL
AF
SCRL
OFF
AK
(LCD BACK LIGHT)
(LCD BACK LIGHT)
MENU
LIST
A
A
K
K
EQ7
A
K
SOUND
ENTER
DISC/
PRESET
+
DISC/
PRESET
−
SEEK−
SEEK+
IC971
1
2
4
3
IC901
KEY BOARD
(CONDUCTOR SIDE)
1-683-349-
11
(11)
B
SUB BOARD
CNP801
1
2
3
RE901
ROTARY ENCODER
(VOLUME CONTROL)
LED901, 912, 917
A
K
A
K
LED903, 914
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
G
H
(Page 25)
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
D901
G-6
D903
G-11
D908
F-6
D911
G-10
D912
G-10
D913
G-10
D971
F-11
D972
F-10
IC901
G-7
IC971
D-11
LED901
D-2
LED903
C-1
LED912
D-13
LED914
C-13
LED917
B-13
LED931
C-4
LED941
C-11
Ref. No.
Location
XR-CA640X
27
27
6-12. SCHEMATIC DIAGRAM – KEY Board –
•
See page 20 for Waveform.
R991
C953
R999
C962
C961
R994
R993
R992
LED903
LED914
IC971
R995
R996
R997
R998
R926
R927
R928
R958
R959
C958
C959
R937
R936
R938
CN901
R911
R912
R913
R901
R902
R903
R904
R914
R915
R905
R906
R916
R917
R907
R918
R919
R990
C956
C971
C952
D903
D913
LSW906(2/2)
LSW902(2/2)
LSW904(2/2)
R921
R922
D912
D911
R910
LSW905(2/2)
R932
LSW919(2/2)
LED917
LED912
R940
R941
R942
LSW911(2/2)
LED901
LSW907(2/2)
LSW913(2/2)
LSW915(2/2)
LSW916(2/2)
LSW918(2/2)
R950
R951
R976
LED941
LED931
R970
R971
R982
R983
R987
R984
R985
R986
D908
D901
D971
D972
LSW911(1/2)
LSW913(1/2)
LSW915(1/2)
LSW916(1/2)
LSW918(1/2)
LSW919(1/2)
LSW902(1/2)
LSW904(1/2)
LSW905(1/2)
LSW906(1/2)
LSW907(1/2)
S912
S914
S917
S901
S903
39k
1000p
0
0.1
0.1
1k
1k
1k
CL-190UB
CL-190UB
RS-670
470
470
1k
100
100
100
100
100
100
0.022
0.022
1k
1k
1k
14P
680
680
680
680
680
680
1k
1k
1.5k
1.5k
1.5k
1.5k
2.2k
2.2k
3.3k
4.7k
1M
0.22
0.1
0.022
UDZ-TE-17-18B
MA8062-M
100
150
MA8062-M
MA8062-M
0
150
CL-190SR
CL-190SR
100
150
150
CL-190SR
470
470
100
NSSW440- B3456RS
NSSW440-B3456RS
68
68
100
100
100
2.2k
2.2k
2.2k
UDZ-TE-17-5.6B
MA111-TX
MA8062-M
UDZ-TE-17
-5.1B
CE
CE
DI
DI
CL
CL
S
E
G
1
S
E
G
2
S
E
G
3
S
E
G
4
S
E
G
5
S
E
G
6
S
E
G
7
S
E
G
8
S
E
G
9
S
E
G
1
0
S
E
G
1
1
S
E
G
1
2
S
E
G
1
3
S
E
G
1
4
S
E
G
1
5
S
E
G
1
6
S
E
G
1
7
S
E
G
1
8
S
E
G
1
9
S
E
G
2
0
S
E
G
2
1
S
E
G
2
2
S
E
G
2
3
S
E
G
4
9
S
E
G
5
0
S
E
G
5
1
S
E
G
5
2
S
E
G
5
3
S
E
G
5
4
S
E
G
5
5
S
E
G
5
6
S
E
G
5
7
S
E
G
5
8
S
E
G
5
9
S
E
G
6
0
S
E
G
6
1
S
E
G
6
2
S
E
G
6
3
S
E
G
6
4
S
E
G
6
5
S
E
G
6
6
S
E
G
6
7
S
E
G
6
8
S
E
G
6
9
S
E
G
70
S
E
G
7
1
S
E
G
7
2
S
E
G
7
3
SEG74
SEG75
SEG76
SEG77
SEG78
SEG79
SEG80
SEG81
SEG82
SEG83
SEG84
COM4
COM3
COM2
COM1
S
E
G
4
6
S
E
G
4
7
S
E
G
4
8
S
E
G
4
9
S
E
G
5
0
S
E
G
5
1
S
E
G
5
2
S
E
G
5
3
S
EG
5
4
S
E
G
5
5
S
E
G
5
6
S
E
G
5
7
S
E
G
5
8
S
E
G
5
9
S
E
G
6
0
S
E
G
6
1
S
E
G
6
2
S
E
G
6
3
S
E
G
6
4
S
E
G
6
5
S
E
G
6
6
S
E
G
6
7
S
E
G
6
8
S
E
G
6
9
S
E
G
7
0
S
E
G
7
1
S
E
G
7
2
S
E
G
7
3
S
E
G
7
4
S
E
G
7
5
S
E
G
7
6
S
E
G
7
7
S
E
G
7
8
S
E
G
7
9
S
E
G
8
0
S
E
G
8
1
S
E
G
8
2
S
E
G
8
3
C
O
M
4
C
O
M
3
C
O
M
2
C
O
M
1
C
O
M
1
C
O
M
2
C
O
M
3
C
O
M
4
C
O
M
4
GND
KEY-1
KEY-0
CE-LCD
DATA-LCD
CLK-LCD
+B
SIRCS
RE-1
RE-0
DOOR-SW
GND
+B
NC
SEG05
SEG
06
SEG07
SEG
08
S
EG09
SEG
10
SEG11
SEG12
SEG
13
S
EG
14
S
EG15
SEG16
SEG17
SEG
18
S
EG19
S
EG2
0
S
EG
21
S
EG
22
S
EG23
S
EG
04
SEG
03
SEG01
SEG
02
SEG74
SEG75
SEG76
SEG77
SEG78
SEG79
SEG80
SEG81
SEG82
SEG83
SEG84
VDD
VLCD
VLCD1
VLCD2
VSS
OSC
LCD-INH
LCD-CE
LCD-CLK
LCD-DATA
COM4
COM3
COM2
COM1
VCC
OUT
GND
GND
LIST
ENTER
OFF
EQ7
MBP
LIST
SEEK +
SEEK -
OFF
SOURCE
MBP
MENU
EQ7
ENTER
SOUND
DSPL
AF
SCRL
MODE
RE901
ROTARY
ENCODER
VOLUME
CONTROL
LED931,941
(LCD BACK LIGHT)
REMOTE CONTROL
RECEIVER
IC901
LC75813T-E
LCD DRIVER
SE
G49
SE
G
50
SEG
51
SE
G5
2
SEG
53
SEG
54
SEG
55
SE
G56
SEG
57
SEG
58
SEG
59
SE
G60
SE
G61
SEG
62
SEG63
SE
G
64
SE
G65
SEG
66
SE
G67
SE
G68
SEG69
SEG
70
SE
G71
SEG
72
S
EG
73
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48
DISC/
PRESET
-
DISC/
PRESET
+
LCD901
LIQUID CRYSTAL DISPLAY
S
E
G
8
4
S
E
G
1
S
E
G
2
S
E
G
3
S
E
G
4
S
E
G
5
S
E
G
6
S
E
G
7
S
E
G
8
S
E
G
9
S
E
G
1
0
S
E
G
1
1
S
E
G
1
2
S
E
G
1
3
S
E
G
1
4
S
E
G
1
5
S
E
G
1
6
S
E
G
1
7
S
E
G
1
8
S
E
G
1
9
S
E
G
2
0
S
E
G
2
1
S
E
G
2
2
S
E
G
2
3
S
E
G
2
4
S
E
G
2
5
S
EG
2
6
S
EG
2
7
S
EG
2
8
S
E
G
2
9
S
EG
3
0
S
E
G
3
1
S
E
G
3
2
S
EG
3
3
S
EG
3
4
S
E
G
3
5
S
E
G
3
6
S
EG
3
7
S
EG
3
8
S
EG
3
9
S
E
G
4
0
S
EG
4
1
S
EG
4
2
S
EG
4
3
S
E
G
4
4
S
EG
4
5
R931
100
R930
150
3
(Page 25)
XR-CA640X
28
28
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC191, 291
NJM2160AM-TE2
REFERENCE
REFERENCE
VCCL
VCCL
VCCL
INL
SVRL
INML
INMR
SVRR
INR
VCCR
VCCR
VCCR
BUFFER
BUFFER
BUFFER
BUFFER
LIFT
AMP
SIGNAL
AMP
LIFT
AMP
SIGNAL
AMP
CL+
CL–
LGND
OUTL
OUTR
RGND
CR–
CR+
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IC301
CXA2510AQ-T4
+
–
–
+
–
+
–
+
–
+ –
1
2
3
4
5
6
7
8 9 10
20
19
18
17
16
15
14
13
12
11
21
22
23
26
27
28
29
30
31
32
33
34
37
38
39
40
24
25
PBFB2
PBRIN2
PBREF2
PBFIN2
35
36
PBGND
VCT
PBFIN1
PBREF1
PBRIN1
PBFB1
PBEQ2
PBOUT2
VCC
TAPEIN2
AUXIN2
MSLPF
LINEOUT2
TCH2
NC
PLAY
FF
MSTC
DGND
MSOUT
NC
NRSW
INSW
TAPESW
MSMODE
DRSW
MSSW
NC
TCH1
LINEOUT1
DIREF
AUXIN1
TAPEIN1
PBEQ1
PBOUT1
GND
F2
120µ/
70µ
X1
X1
VCT
+
F1
120µ/
70µ
NR
OFF/B
F3
LPF
VCC
DETECT
MS ON/
OFF
NR
MODE
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
NR
MS
MODE
OFF/B
T2
T1
IC331
TDA7406
SOFT STEP FADER
SOFT STEP FADER
SOFT STEP FADER
SOFT STEP FADER
MAIN SOURCE
SELECTOR
MIXING
SELECTOR
INPUT
MULTIPLEXER
TAPER
PDR+
PD–
PDL+
PAUSE
PHONE
TIM
NAVI
AM IF
CMPX
1
2
3
4
5
6
7
8
9
10
11
TAPE
PD
PHONE
TIM
NAVI
TAPEL
MDR
MDL
CDR
CDL 40
41
42
43
44
PAUSE
BEEP
IN-GAIN
+AUTO ZERO
SOFT STEP
VOLUME
7 BAND
EQUALIZER
SOFT MUTE
LOUDNESS
+
+
SWACOUT 37
HPF
ACOUTL 38
ACOUTR 36
OUTPUT
SELECTOR
SWIN 34
ACINR 35
REAR
AC IN
SW
MAIN
MIXER
FRONT
ACINL
MIXINLF
MIXINLR
MIXINRR
MIXINRF
OUTLF
OUTLR
OUTRF
OUTRR
25
26
27
28
29
30
31
32
33
SUB
WOOFER
FILTER
SOFT STEP FADER
OUTSW
24
MONO FADER
DIGITAL CONTROL
IIC BUS
SPECTRUM
ANALYZER
22
23
VDD
DEMODULATOR
+STEREO ADJUST
+STEREO BLEND
25kHz
LPF
HIGH-CUT
S & H
PILOT
CANCELLATION
PLL
PILOT
DET
80kHz
LPF
FM/AM
NOISE BLANKER
STD
IN GAIN
AM/MPX2
MULTIPATH
DETECTOR
D/A
CONVERTER
QUAL
PULSE
FORMER
SAOUT
SACLK
21
SCL
20
SDA
GND
ATT
19
18
17
QUAL
16
MPOUT
MPIN
LEVEL
13
14
15
MPX1
12
CREF 39
MD
CD
FM
AM
29
XR-CA640X
IC351
LB1930M-TLM
IC611
BA4908-V3
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
IC581
BA8270F-E2
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
+
–
+
–
+
–
+
–
OVER VOLTAGE
PROTECT
REGULATOR
1
2 3 4
5
6
7
8
9
10
12
11
NC
T
UNER8.7 ANT SW
TUNER5.6 SW
STB
VDD5.6V
AMP
VCC
ANT
COM8.7V
TUNER5.6V
TUNER8.7V
GND
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