Sony XM-4S Service Manual ▷ View online
10
XM-4S
SECTION 3
DIAGRAMS
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 diagram:
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
• All capacitors are in µF unless otherwise noted. (p: pF)
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.
•
%
: indicates tolerance.
•
A
: B+ Line.
•
B
: B– Line.
• Total current is measured with no-signal condition.
• Power voltage is dc 14.4V and fed with regulated dc power
• Power voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REM terminals.
• Voltage is dc with respect to ground under no-signal con-
dition.
• 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.
F
: AUDIO
for printed wiring boards:
Note:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• Waveform
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
1 V/DIV, 10
µ
sec/DIV
1
IC903
5
3.1 Vp-p
18
µ
sec
11
11
XM-4S
XM-4S
3-1. BLOCK DIAGRAM
5
6
7
PRE AMP
IC801 (2/2)
GAIN CONTROL AMP
IC805 (2/2)
HPF
IC803 (2/2)
DIFFERENTIAL
AMP
Q103
POWER
AMP
Q110
DRIVE
AMP
Q104
DIFFERENTIAL
AMP
Q102
POWER
AMP
Q111
DRIVE
AMP
Q105
BIAS
Q106,107
BIAS
Q206,207
CN902 (1/2)
CN901
MUTE
SWITCH
Q101
+12V
GND
9
PRE AMP
IC801 (1/2)
DIFFERENTIAL
AMP
Q203
POWER
AMP
Q210
DRIVE
AMP
Q204
DIFFERENTIAL
AMP
Q202
MUTE
CONTROL
Q802
POWER
AMP
Q211
DRIVE
AMP
Q205
-3
-2
-4
L
R
L
R
-1
L
(FRONT)
INPUT
(FRONT)
D907
D906
(REAR)
R
CN903
L
R
MUTE
SWITCH
Q201
1
2
14
12
REF.
REG
REG
CN904 (1/2)
F901
40A
SWITCHING
DRIVER
Q910,911
SWITCHING
DRIVER
Q912,913
DRIVER
Q908,909
8
10
11
3
FRONT
SPEAKER
OUT
DC-DC
CONVERTER
TRANSFORMER
T901
DC-DC CONVERTER
IC903
B+
SWITCH
Q905
OVERLOAD
DET
Q112
OVERLOAD
DET
Q212
CN904 (2/2)
L
(L+R)
R
REAR
SPEAKER
OUT
2
3
CN902 (2/2)
L
RL
REM
+15V REG
Q807
–15V REG
Q808
PROTECTOR
DRIVE
Q901,902
OVERLOAD
PROTECT
(REAR)
Q805,806
OVERLOAD
PROTECT
(FRONT)
Q803,804
POWER
ON/OFF
Q906
MUTE CONTROL
IC902
+27V
+15V
–27V
+30V
–30V
–15V
RECT
D803
D803
VR803-2
(FRONT)
(REAR)
SENSING
POWER ON
HIGH
LEVEL
INPUT
INPUT
PRE AMP
IC802 (2/2)
7
LPF
IC804 (2/2)
GAIN CONTROL AMP
IC806 (2/2)
DIFFERENTIAL
AMP
Q303
POWER
AMP
Q310
DRIVE
AMP
Q304
DIFFERENTIAL
AMP
Q302
POWER
AMP
Q311
DRIVE
AMP
Q305
MUTE
SWITCH
Q301
PRE AMP
IC802 (1/2)
3
1
LPF
IC804 (1/2)
DIFFERENTIAL
AMP
Q403
POWER
AMP
Q410
DRIVE
AMP
Q404
DIFFERENTIAL
AMP
Q402
POWER
AMP
Q411
DRIVE
AMP
Q108
DRIVE
AMP
Q109
DRIVE
AMP
Q208
DRIVE
AMP
Q209
DRIVE
AMP
Q308
DRIVE
AMP
Q309
DRIVE
AMP
Q408
DRIVE
AMP
Q409
DRIVE
AMP
Q405
MUTE
SWITCH
Q401
OVERLOAD
DET
Q412
2
OVERLOAD
DET
Q312
5
6
3
TEMP.DET
TH901,904,905
THERMAL DET
Q914,915
VCC
REF
D905
D901
OFF
ON
LED800,801
(BLUE ILLUMINATION)
LED803,804
(ILLUMINATION)
LED802
(PROTECTOR)
SW803
BLUE ILLUMINATION (REAR)
D902
OVER
VOLTAGE
DETECT
Q907
6
HPF
5
6
1
1
GAIN CONTROL AMP
IC805 (1/2)
HPF
IC803 (1/2)
2
HPF
LPF
3
2
LPF
6
5
2
1
GAIN CONTROL AMP
IC806 (1/2)
BOOSTER AMP
IC807 (2/2)
BOOSTER AMP
IC807 (1/2)
6
7
2
3
MUTE
CONTROL
Q810
MUTE
CONTROL
Q809
MUTE
CONTROL
Q811
MUTE
CONTROL
Q812
15
16
7
1
7
1
BIAS
Q306,307
BIAS
Q406,407
VR801-1
VR801-2
VR802-1
VR802-2
SW801-1
SW801-2
VR801
LEVEL
(FRONT)
ON
OFF
VR802
LEVEL
(REAR)
VR803
LOW BOOST (40Hz)
(REAR)
SW801
HPF
(80Hz)
(FRONT)
OFF
ON
SW802
SW802-1
SW802-2
LPF
(80Hz)
(REAR)
3
1
2
• Signal path
: AUDIO
: AUDIO
BOOSTER
CONTROL
CONTROL
Q400
VR803-1
5
7
6
BOOSTER
CONTROL
CONTROL
Q300
LED DRIVER
Q903
FAN901
DC FAN
DC FAN
DC FAN
CONTROL
Q917,919
THERMAL DET
Q916,920
DC FAN
ON/OFF
ON/OFF
Q918
(REAR)
(L+R)
RECT
D808
D808
RECT
D809
D809
RECT
D804
D804
7
12
12
XM-4S
XM-4S
3-2. CIRCUIT BOARDS LOCATION
LED-FOOT-L board
LED-FOOT-R board
MAIN board
FILTER board
LED-XPLOD board
Ref. No.
Location
D101
F-9
D102
G-9
D201
E-9
D202
F-9
D301
D-8
D302
D-9
D401
D-7
D402
D-8
D801
F-8
D802
G-7
D902
F-6
D904
H-5
D905
H-5
D908
F-6
D909
F-6
IC801
H-9
IC802
H-8
IC903
G-6
JR101
F-9
JR102
F-9
JR201
E-9
JR202
E-9
JR301
D-9
JR302
D-9
JR401
D-8
JR402
D-8
Q101
G-8
Q102
G-9
Q103
F-9
Q201
F-8
Q202
F-9
Q203
E-9
Q301
E-8
Q302
D-9
Q303
D-9
Q401
E-8
Q402
D-8
Q403
D-8
Q802
F-8
Q809
F-8
Q810
F-8
Q811
F-8
Q812
E-8
Q903
F-6
Q906
G-5
Q907
G-5
Q914
H-5
Q915
H-5
• Semiconductor Location
(Main Section (1/2))
Ref. No.
Location
D803
C-4
D804
C-4
D805
F-8
D806
F-8
D807
B-11
D808
E-6
D809
E-6
D901
B-10
D903
F-7
D906
I-7
D907
I-7
D910
F-6
IC902
H-6
LED800
C-2
LED801
C-13
Q104
F-9
Q105
G-9
Q106
F-11
Q107
G-11
Q108
F-9
Q109
F-9
Q110
E-11
Q111
G-11
Q112
E-11
Q204
E-9
Q205
F-9
Q206
D-11
Q207
D-11
Q208
E-9
Q209
E-9
Q210
C-11
Q211
D-11
Q212
C-11
Q304
D-9
Q305
D-9
Q306
B-8
Q307
B-9
Q308
D-8
Q309
D-9
Q310
C-8
Q311
C-9
Q312
B-8
Q404
D-7
Q405
D-8
Q406
B-6
Q407
B-6
Q408
D-7
Q409
D-8
Q410
C-5
Q411
C-7
Q412
B-5
Q803
B-11
Q804
B-11
Q805
B-11
Q806
B-11
Q807
F-8
Q808
F-8
Q901
G-7
Q902
F-7
Q905
H-5
Q908
E-5
Q909
E-5
Q910
D-4
Q911
E-4
Q912
F-4
Q913
F-4
Q916
E-6
Q917
E-6
Q918
F-6
Q919
F-6
Q920
F-6
• Semiconductor Location
(Main Section (2/2))
13
13
XM-4S
XM-4S
3-3. PRINTED WIRING BOARDS — MAIN SECTION (1/2) — • Refer to page 12 for Circuit Boards Location and Semiconductor Location.
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
1-871-720- (12)
12
1-871-721- (12)
12
1-871-717- (12)
12
D201
D102
Q907
Q906
IC903
IC801
IC802
R102
R916
R917
C909
C401
R918
D902
R919
C918
D401
R454
R950
R949
R948
Q903
C907
C903
C904
R942
C921
R941
R940
R939
R938
R937
R936
R935
Q914
Q915
C919
R915
R914
Q101
R152
Q201
R252
Q301
R352
Q401
R452
Q812
Q811
Q809
Q810
Q802
R807
R808
R809
D801
C302
C202
C102
Q303
Q302
C405
C407
R407
R406
R403
R402
C406
C307
C306
C305
R307
R306
R303
R302
R456
C452
R474
R473
D802
C453
Q403
D904
R453
R156
C152
R153
R174
R173
D101
C153
Q402
Q102
R356
C352
D301
R374
R373
D402
C353
Q202
R256
C252
D202
R274
R273
C253
Q203
Q103
R944
R946
R945
R354
C205
C207
C107
C106
C105
R207
R206
R203
R202
R107
R106
C206
R103
R353
R271
R254
R253
R154
R371
R471
R171
D302
D908
D909
R958
D905
R956
R943
R905
R904
JR101
JR102
JR201
JR202
JR301
JR302
JR401
JR402
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