Sony STR-WX7 Service Manual ▷ View online
STR-WX7
9
9
SECTION 4
DIAGRAMS
4-1. CIRCUIT BOARDS LOCATION
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
p
: parts mounted on the conductor side.
•
®
: Through hole.
•
¢
: internal component.
• b
: Pattern from the side which enables seeing.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM
L
: AUDIO (AV INPUT)
g
: MD/VIDEO
i
: VIDEO (AV INPUT)
E
: PB (DECK A)
G
: REC (DECK B)
J
: CD
• Abbreviation
EA
: Saudi Arabia model.
SP
: Singapore model.
MY
: Malaysia model.
AUS
: Australian model.
TH
: Thai model.
DISPLAY Section
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
• Indication of transistor
C
These are omitted
E
B
Q
C
These are omitted
E
B
• Waveform
5MHz
5.3Vp-p
IC501
0
X2
IC501
!£
XT2
1
2
32.768kHz
5Vp-p
MIC / ECHO board
POWER AMP board
SURR AMP board
SURR SPK board
PRIMARY board
ENCAPSULATED COMPONENT
SECONDARY board
HEADPHONE board
CONNECTOR board
LOADING PANEL board
FRONT AV board
PANEL board
MAIN board
MOTOR board
DETECTOR board
•
Abbreviation
EA
EA
: Saudi Arabia
SP
: Singapore
MY
: Malaysia
AUS : Australian
TH
TH
: Thai
STR-WX7
10
10
4-2. BLOCK DIAGRAM
MAIN SECTIOAN
5
3
2
1
SPEANA
SELECTOR
IC505
SPEANA
BPF FILTER
IC506
4
15
22
25
9 10
26
27
27
55
56
RESET
LED
ON/OFF
SWITCH
Q502-512,
Q531-535,
Q538-540
Q531-535,
Q538-540
SWITCH
Q501
IC891
D504
DATA
CLK
LAT
RST
D507
PANEL
LED
+5.6V
RESET
IC502
MIX
MIC
MIC
J6001
MIC LEVEL
MUTE
Q183
SW
Q132
DBFB
SELECTOR
IC112
KEY
MATRIX
MULTI JOG
STATION
S653
VOLUME
S652
SLIDING
SENSOR
SENSOR
IC504,Q513
REMOTE
SENSOR
SENSOR
IC503
MUTE
SWITCH
Q121
35
36
16
41
94
SPEANA CONT
Y
Z
SPEANA0
SPEANA1
I2C DATA
I2C CLK
DATA OUT
DATA IN
LAT
CLK
ST MUTE
STREO
TUNED
AV IN
POWER ON/OFF
KEY0
I
KEY3
JOG A
JOG B
VOL A
VOL B
SENSOR IN
SIRCS IN
GEQ DATA
VA CS
Y1
Y2
Z1
Z2
4
16
17 f1
f2
15 f3
14 f4
13 f
LINE
IN
GEQ CLK
37
38
32
5
6
16
G0
G15
DATA
CLK
CLK
CS
RESET
DATA
CLK
CLK
LAT
RST
MIC AMP
IC6001(2/2)
FL601
DISPLAY CONTROL
IC601
FLUORESCENT
INDICATOR
TUBE
15
14
13
7
6
1
RV6001(1/2)
MIC AMP
IC6001(1/2)
3
2
10
MASTER CONTROL
IC501
92
90
89
93
B
POWER
SECTION
COM DIN
ST L
COM DATA
ST CE
COM CLK
MUTE
STEREO
TUNED
POWER ON/OFF
FM/AM TUNER
TUNER UNIT IS
SUPPLIED AS
THE ASSEMBLED
BLOCK
(Page 12)
(Page 12)
• R CH: Same as L ch
• SIGNAL PATH
: FM
: AUDIO(AV INPUT)
: MD/VIDEO
: VIDEO
: PB
: VIDEO(AV INPUT)
: REC
: CD
• SIGNAL PATH
: FM
: AUDIO(AV INPUT)
: MD/VIDEO
: VIDEO
: PB
: VIDEO(AV INPUT)
: REC
: CD
20
C
POWER
SECTION
43
10
11
21
18
19
42
86
87
88
88
R-CH
R-CH
R-CH
AV SWITCH
Q6301
96
97
GEQ LAT
95
PROLOGIC LAT2
1
PROLOGIC DATA
100
2
1
3
DBFB B2
5
DBFB B1
6
42
41
33
1
2
3
24
OSC1
CLK DATA
OSC2
DOLBY PRO-LOGIC
IC300
AMP
IC361
MUTE
Q361,371
32 34
VIDEO
L-CH
S/W
MUTE
L+R
S OUT
C OUT
TA MUTE
38
36
VOLUME
IC111(2/2)
40
AMP
IC113(2/2)
39
59
60
57
58
TA MUTE
LED
FL DATA
FL CLK
FL LAT
RESET
FL RESET
ACCUT
MOTOR 1
MOTOR 2
X2
X1
X501
5MHz
46
49
50 54 51 53
52
47
X301
8MHz
X502
32kHz
XT2
XT1
7
.
82
83
83
84
85
13
14
M
M891
PANEL
MOTOR
PANEL
OPEN/CLOSE
S892
MOTOR
DRIVER
DRIVER
PROLOGIC CLK
99
PROLOGIC LAT1
98
VF1
VF2
AC1
AC2
28
I
31
2
1
CN101
J6301
J101
TO
HTC-WX5
VIDEO
AUDIO L
AV INPUT
(VIDEO 2)
(VIDEO 2)
7
9
5
R-CH(REC R)
R-CH(CD R)
R-CH(PB R)
IIC DATA
IIC CLK
IIC CLK
AC1
AC2
6
17
13
14
16
69
65
DET
D131
68
SELECT
SWITCH
EQ
AMP
CD
V2
MD/V1
TC
TU
2
66
67
4
MICON
INTERFACE
61
5
7
L IN
L OUT
31
C OP OUT
33
5
3
7
1
S OP OUT
12
I
1
64
I
61
59
I
33
31
I
23
S0
S35
SYSTEM
CONTROL
MD/
VIDEO 1
IN L
OUT L
15
EQ
IC111(1/2)
ENABLE
ENABLE2
R-CH
PANEL OPEN
PANEL CLOSE
PROLOGIC
RLY
PROLOGIC RLY
4
67
70
72
73
50
I
54
57
.
.
.
.
.
STR-WX7
11
11
POWER SECTIOAN
• R CH : Same as L ch
• SIGNAL PATH
: FM
:VIDEO (AV INPUT)
• Abbreviation
EA
SP
MY
• SIGNAL PATH
: FM
:VIDEO (AV INPUT)
• Abbreviation
EA
SP
MY
: Saudi Arabia model.
: Singapore model.
: Malaysia model.
: Singapore model.
: Malaysia model.
R-CH
R-CH
R-CH
D751
D761
RY751
Q741
RY781
OVER LOAD
DET
Q952
OVER LOAD
SWITCH
Q851
POWER AMP
IC901
PROTECTOR
IC851
L-CH
L+R
S/W
VIDEO
TA MUTE
MUTE
PROLOGIC RLY
POWER ON/OFF
EA,SP,MY
AC
IN
PHONES
J755
MONITOR
OUT
SUPER
WOOFER
J781
FRONT
SPEAKER
TB751
M
M901
FAN
ST+10V
UNREG
+12V
+7V
+5.6V
+5V
D813
D821
Q854
Q855
-7V
+B
-B
VG
R-CH
MOTOR
MUTE
SWITCH
Q901
MUTE
Q181
SWITCH
Q853
D852,853
PROTECTOR
VCC ON
MUTE
ST+10V
REG
IC804
VOLTAGE
SELECTOR
S871
VF1
VF2
AC1
AC2
T901
POWER
TRANSFORMER
MAIN
SECTION
B
16
(Page 11)
8
1
4
3
1
6
7
2
20
15
R-CH
SURR +B
SURR -B
RECT
D810,811
+7V REG
IC801
+5.6V REG
IC803
FAN MOTOR
REG
Q731,732
POWER ON
MUTE
Q852
RECT
D805-808
RECT
D801
D801
RECT
D802, 803
VG REG
Q801
3
1
3
1
3
2
-7V REG
IC802
VF1
VF2
AC1
AC2
L
D746
RY741
OVER LOAD
DET
Q4002
POWER AMP
IC4001(1/2)
REAR
SPEAKER
CENTER
SPEAKER
TB201
L
1
10
OVER LOAD
DET
Q4052
POWER AMP
IC4001(2/2)
18
13
R
+
–
+
–
RECT
D809
D809
+
–
MAIN
SECTION
C
(Page 11)
C OUT
S OUT
OVER HEAD
DET
Q971, 972
STR-WX7
12
12
4-3. PRINTED WIRING BOARD MAIN SECTION
• Refer to page 9 for Circuit Boards Location.
(Page 17)
(Page 23)
(Page 15)
(Page 15)
(Page 17)
(Page 15)
(Page 23)
(Page 21)
(Page 21)
(Page 24)
(Page 19)
MD/VIDEO1
MD/VIDEO1
B
B
JW254
Ref. No.
Location
D101
B-11
D102
A-11
D131
E-9
D742
F-7
D743
F-10
D746
F-10
D751
E-11
D752
E-10
D761
E-12
D781
G-10
D801
E-4
D802
D-4
D803
D-4
D804
C-2
D805
F-4
D806
F-4
D807
F-4
D808
F-4
D810
D-4
D811
D-4
D812
B-2
D813
A-2
D821
G-5
D851
F-8
D852
G-8
D853
G-8
IC111
B-10
IC112
D-10
IC113
D-9
IC300
A-7
IC361
A-5
IC801
A-2
IC802
C-3
IC803
B-2
IC804
C-4
IC851
G-9
Q121
A-2
Q132
D-10
Q182
D-11
Q183
E-8
Q361
B-4
Q371
A-4
Q731
F-11
Q732
F-10
Q741
F-9
Q801
C-2
Q851
F-9
Q852
G-8
Q853
G-8
Q854
G-7
Q855
G-6
• Semiconductor
Location
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