Sony XM-7547 Service Manual ▷ View online
XM-7547
8
8
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – AMPLIFIER SECTION –
2
2
3
5
7
6
7
6
7
5
6
7
DIFFERENTIAL
AMP
Q104,106
DIFFERENTIAL
AMP
Q105,107
POWER AMP
(VOLTAGE STAGE)
Q108
BIAS
VR101,Q110
LEVEL SHIFT
Q101
OVERLOAD
Q113,115
OVERLOAD
Q114,116
5
7
6
7
5
7
6
7
6
7
5
6
7
DIFFERENTIAL
AMP
Q304,306
DIFFERENTIAL
AMP
Q305,307
LEVEL SHIFT
Q301
OVERLOAD
Q313,315
OVERLOAD
Q314,316
OFFSET
SET
Q857-861
CNJ807
8
2
2
3
9
4
1
1
10
6
7
5
CNP805
POWER AMP
(VOLTAGE STAGE)
Q109
POWER AMP
(VOLTAGE STAGE)
Q308
BIAS
VR301,Q310
POWER AMP
(VOLTAGE STAGE)
Q309
POWER AMP
(FINAL STAGE)
Q111-112
POWER AMP
(FINAL STAGE)
Q311-312
NFB ON
NFB OFF
NFB ON
NFB OFF
RY801(1/2)
RY801(2/2)
DIRECT
S806-1
DIRECT
S805-1
LINE SWITCH
Q102
LINE SWITCH
Q103
LOWBOOST
IC806-1
LOWBOOST
IC812-1
LINE SWITCH
Q302
LINE SWITCH
Q303
FAN CTL
Q852
CNP806
POWER
DRIVE
Q854
THERMAL
DET
TH851
POWER
CONTROL
Q853
FAN DRIVER
Q851
INVERTER
Q855
B-CH
D-CH
CN811
CN810
SPEAKER OUT
ON
OFF
ON
OFF
B-
B+
B-
B+
H.P.F
IC803-1
L.P.F
IC805-1
L.P.F
IC804-1
FILTER
VR805-1
FILTER
VR805-3
PRE AMP
IC807-1
H.P.F
IC808-1
H.P.F
IC809-1
L.P.F
IC811-1
L.P.F
IC810-1
LEVEL
VR802-1
FILTER
VR806-1
FILTER
VR806-3
X10-X1
FILTER
CNP808
CNJ808
CNJ808
CNP808
CNJ809
CNP809
CNP809
CNJ809
HPF
LPF
FLAT
HPF
LPF
FLAT
LOWBOOST
VR803-1
LOWBOOST
VR804-1
CNJ806
FN801
DC FAN MOTOR
INVERTER
Q856
+45V
+15V
-15V
-45V
T851
D854
D855
D856
D857
D858
D859
D861
D860
B+
B-CH
D-CH
TO
POWER
BOARD
CNB805
09
FILTER BOARD
AMPLIFIER BOARD
3
1
TEST TONE AMP
IC851-2
TEST TONE AMP
IC851-1
FILTER
FILTER
FILTER
S803-1
S801-1
S801-3
X10-X1
FILTER
S802-1
S802-3
S804-1
A
A+B
MONO
C+D
MONO
B
(MONO)
(MONO)
INPUT
C
D
SPEAKER OUT
B
A
C
D
2
1
2
1
2
5
7
6
TEST TONE
S851
2
2
3
3
3
M
5
7
6
7
PRE AMP
IC801-1
H.P.F
IC802-1
LEVEL
VR801-1
• Signal path
: Audio
XM-7547
9
9
5-2. BLOCK DIAGRAM – POWER SECTION –
7
8
9
2
5
6
10
3
4
CNB805
CN802
CNJ801
TO
AMPLIFIER
BOARD
CNP805
BATTERY
GND
REMOTE
BATTERY
5
4
7
6
3
1
3
1
CNP804
POWER BOARD
OFFSET CONTROL
Q809-810
OFFSET LED
SET
Q804
THERMAL DETECTOR
(For H,S)
TH903
THERMAL DETECTOR
(For TRANS)
TH904
NFB
S802
SWITCH
Q901-902
SWITCH
Q904
SWITCH CTL
Q903
THERMAL
CONTROL
CONTROL
Q918
THERMAL
SWITCH
Q917
THERMAL
LED SWITCH
Q806
11
10
1
2
15
16
3
8
9
12
14
REF-REG
THERMAL SWITCH
TH905,Q919
DRIVER
Q921
INVERTER
Q924,926,928
DRIVER
Q920
INVERTER
Q925,927,929
T902
SWITCHING
CONTROL
Q922-923
Q922-923
11
10
1
2
15
3
8
9
12
14
REF-REG
DRIVER
Q908
INVERTER
Q911,913,915
DRIVER
Q907
INVERTER
Q912,914,916
T901
SWITCHING
CONTROL
Q909-910
Q909-910
THERMAL SWITCH
TH902,Q906
SWITCH
Q905
D901
F903 (25A)
F904 (25A)
F901 (25A)
F902 (25A)
S801-1
HI-V
HI-C
+28V
-28V
TO
AMPLIFIER
BOARD
AMPLIFIER
BOARD
+28V
-28V
TO
AMPLIFIER
BOARD
AMPLIFIER
BOARD
D905
D912
D913
D906
IC903
DC DET
IC901
DC DET
DC-DC
CONVERTER
IC904
DC-DC
CONVERTER
IC902
THERMAL
DET
TH901
D904
D903
OVER CURRENT
CONTROL
Q807-808
Q807-808
OVER CURRENT
LED SWITCH
Q805
D908
D909
OR
D806
OR
OR
D907
16
MUTE CONTROL
D808,Q811
MUTE SWITCH
Q812
OFF
ON
S801-3
MODE
HI-C
HI-V
S801-4
D911
D910
MUTE ENABLER
IC813
D801
HI-VOLTAGE
D802
HI-CURRENT
D803
OVER CURRENT
G
G
G
R
D804
OFFSET
G
R
D805
THERMAL
G
R
B+
Q801
SWITCH
Q802
SWITCH
Q803
SWITCH
CNB804
LED BOARD
09
MODE
MODE
S801-2
D911
HI-V
HI-C
MODE
+12V
+12V
2
1
3
4
2
1
3
4
B +
B –
B +
B –
HI-V
HI-C
4
3
1
2
XM-7547
10
10
5-4. PRINTED WIRING BOARD – LED/FILTER SECTION –
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.
•
C
: panel designation.
•
U
: B+ Line.
• Powr voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REMOTE terminals.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark: POWER ON
no mark: POWER ON
*
: Impossible to mersure
• 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
: AUDIO
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
5-3. IC BLOCK DIAGRAM
• POWER section
IC902, 904
µ
PC494G2
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
• Semiconductor
Location
Ref. No.
Location
IC803
C-3
IC804
B-3
IC805
B-2
IC809
C-5
IC810
B-6
IC811
B-6
• Semiconductor
Location
Ref. No.
Location
D801
A-4
D802
A-4
D803
A-2
D804
A-3
D805
A-1
Q801
A-2
Q802
A-3
Q803
A-1
A
B
C
1
2
3
4
5
6
7
R489
R289
R387
R487
C354
JW102
R486
R383
R183
R187
R287
R286
R484
R483
R481
R482
R485
C451
R284 R282
R285
C251
R490
R382
R384
R385
C351
R389
R386
R182
R184
R185
C151
R290
R283
R281
R390
R381
R181
R186
R190
R189
IC811
IC810
IC809
IC804
IC803
IC805
JW117
1-675-246-
11
09
FILTER BOARD
JW104
JW103
JW105
JW106
JW107
C452
C454
JW101
S802
JW1
1
8
CNJ809
C453
C455
JW1
1
9
JW120
JW111
JW1
1
0
JW109
JW116
JW115
C352
C753
C754
C357
C356
JW121
JW122
C457
C456
JW114
JW113
JW112
C355
C353
S804
VR806
JW108
JW125
JW137
C254
C154
JW138
JW129
JW130
JW123
JW124
JW128
JW131
JW139
JW140
JW141
JW142
C751
C752
JW126
JW127
JW143
JW136
JW135
JW134
JW133
JW132
C252
C157
C256
C257
C156
C153
C253
C255
C155
C152
CNJ808
VR805
S803
S801
1
9
1
9
C
(Page 12)
S801
FILTER
(X1 X10)
VR805
FILTER
(50Hz — 400Hz)
S803
FILTER
(LPF OFF HPF)
S804
FILTER
(X1 X10)
VR806
FILTER
(50Hz — 400Hz)
S802
FILTER
(LPF OFF HPF)
AMPLIFIER BOARD
CNP808
B
(Page 12)
AMPLIFIER BOARD
CNP809
1
A
2
3
4
09
1-675-245-
LED BOARD
11
CNB804
G
G
R
G
G
R
G
E
E
E
R
G
D802
D801
D803
D804
D805
1
7
D
(Page 16)
HI-CURRENT
POWER BOARD
CNP804
BLK +B
BLU GND
BLU
TH
BLU CFFS
BLU O-C
BLU H-V
BLU H-C
R815
R812
R81
1
Q803
R814
R808
R807
R806
R805
Q802
R813
R804
R803
R802
R810
R809
R801
Q801
D804
D803
D805
THERMAL
OFFSET
OVER CURRENT
D801
HI-VOLTAGE
POWER/PROTECTOR
MODE
D802
XM-7547
11
11
5-5. SCHEMATIC DIAGRAM – FILTER/AMPLIFIER (1/3) SECTION –
• See page 10 for IC Block Diagram.
A
B
C
D
C101
4.7/50V
R101
22k
C102 4.7/50V
R102
22k
R851
3.3k
C851
330
25V
25V
C104
33P
5
6
7
6
5
7
2
3
4
5
6
7
2
3
1
3
2
1
IC801-1
NJM4580E(T1)
IC802-1
NJM4580E
(T1)
IC802-2
NJM4580E
(T1)
6
5
7
3
2
1
IC808-1
NJM4580E
(T1)
IC808-2
NJM4580E
(T1)
IC801-2
NJM4580E(T1)
IC807-1
NJM4580E(T1)
IC807-2
NJM4580E(T1)
R105 22k
C105 47P
R205 22k
C205 47P
C405 47P
C305 47P
R405 22k
R305 22k
R201
22k
C201
4.7/50V
R301
22k
C301
4.7/50V
R302
22k
C302
4.7/50V
R402
22k
C402
4.7/50V
R401
22k
C401
4.7/50V
R202
22k
C202
4.7/50V
R206
150
R306
150
R406
150
R106
150
C106 100P
R107 4.7k
C206 100P
R207 4.7k
R307 4.7k
C306 100P
R407 4.7k
C406 100P
C304
33P
C856 0.1
C404
33P
CNJ809 9P
CNP809 9P
R489
10k
C457
47/16V
C456
47/16V
HPF
LPF
FLAT
R490
10k
R308
3.3k
R309
4.7k
IC810-2
NJM4580E
(T1)
IC811-1
NJM4580E(T1)
IC811-2
NJM4580E
(T1)
IC810-1
NJM4580E
(T1)
IC809-2
NJM4580E(T1)
C455 0.015
C453 0.015
4
1
2
3
4
8
1
1
2
3
4
2
3
C454
0.15
C452
0.15
R487 2.2k
R484 10k
R486 2.2k
C451 100P
R483 6.8k
R485
10k
R482
22k
R481
10k
R381
10k
R382
22k
R386 2.2k
R387 2.2k C355 0.015
R384 10k
C353 0.015
C351 100P
R385
10k
C352
0.15
C354
0.15
C357
47/16V
C356
47/16V
IC809-1
NJM4580E(T1)
7
6
5
8
7
6
5
8
7
6
5
R383
6.8k
R390
10k
R389
10k
5
6
8
7
Q302 2SC3327-A
Q202 2SC3327-A
Q203
2SC3327-A
Q103
2SC3327-A
Q102 2SC3327-A
Q201
2SC3624-T1L1718
Q101
2SC3624-T1L1718
Q303
2SC3327-A
Q403
2SC3327-A
IC812-2
NJM4580E(T1)
IC812-1
NJM4580E(T1)
IC806-2
NJM4580E(T1)
IC806-1
NJM4580E(T1)
R310 3.3k
R410 3.3k
C307 100P
C407 100P
C308
4.7/50V
R311
680
R312
22k
R315
10k
R314
10k
R214
10k
R215
10k
R115
10k
R114
10k
R116
10k
R117
3.3k
R208
3.3k
R216
10k
R217
3.3k
C309
0.22
C409
0.22
C408
4.7/50V
R313 6.8k
R411
680
R412
6.8k
R413 6.8k
R316
10k
R416
10k
R415
10k
Q402 2SC3327-A
R414
10k
R317
3.3k
R417
3.3k
R409
4.7k
R408
3.3k
1
2
3
4
1
2
3
7
5
6
C207 100P
C107 100P
C208
4.7/50V
C108
4.7/50V
R209
4.7k
R108
3.3k
R109
4.7k
R210
3.3k
R110 3.3k
R211
680
R212
22k
R111
680k
R112
22k
R213
6.8k
C209
0.22
R113 6.8k
C109
0.22
CNP808 9P
CNJ808 9P
R188
10k
C157
47/16V
C154
0.15
R190
10k
R187 2.2k
R184 10k
R186 2.2k
R286 2.2k
R285
10k
R267 2.2k
C155 0.015
C153 0.015
C152 0.15
C254
0.15
C252
0.15
C255 0.015
C253 0.015
C251 100P
C156
47/16V
HPF
FLAT
LPF
IC805-1
NJM4580E(T1)
IC804-2
NJM4580E(T1)
R290
10k
R289
10k
C256
47/16V
C257
47/16V
1
2
3
1
2
3
7
5
6
IC805-2
NJM4580E
(T1)
IC803-2
NJM4580E(T1)
1
2
3
7
5
6
7
5
6
IC803-1
R284 10k
R183
6.8k
R283
6.8k
R282 22k
R182 22k
C703 220 16V
C704 220 16V
R281
10k
R181
10k
C151 100P
R185 10k
C886
0.1
C889
0.1
CNJ807
R852 1K
C705 0.001
C852 0.22
R103
4.7M
4.7M
R104 22k
R203
4.7M
4.7M
R204 22k
C203 47p
C103 47p
8
C853 330 25V
R853
3.3k
R303
4.7M
4.7M
R304 22k
C303 47p
R403
4.7M
4.7M
R404 22k
R854 1K
C854 0.22
4
8
S851
TEST TONE
VR801-1
5KC
VR801-2
5KC
VR802-1
5KC
VR802-2
5KC
8
4
8
4
09
VR803-1
5KC
C218 100P
C318 100P
C318 100P
C418 100P
C118 100P
C751 0.1
C752 0.1
VR803-2
5KC
4
8
S805-1
ON
OFF
S806-1
ON
OFF
S805-2
ON
OFF
S806-2
ON
OFF
VR804-2
5KC
VR804-1
5KC
S801-1
S801-3
S803-1
8
8
8
VR805-3
20KE
S803-2
S801-2
S801-4
4
4
4
VR805-4
20KE
VR805-1
20KE
VR805-2
20KE
S802-1
S802-3
S804-1
VR806-3
20KE
S804-2
S802-2
S802-4
VR806-4
20KE
VR806-1
20KE
VR806-2
20KE
2
3
1
IC851-2
NJM4580E(T1)
4
R884
10k
R885
4.7k
C899 0.01
R887 3.9k
C850
0.01
R886
3.8k
R855
10k
R883
10k
R856
10k
R857
15k
D851
1SS184
C204
33p
LEVEL
(MIN-MAX)
6
5
7
IC851-1
NJM4580E(T1)
8
R859
10k
R858
4.7k
C857 0.01
R860 180k
C858
0.01
R861
180k
R882
1M
MONO
INPUT
MONO
LEVEL
(MIN-MAX)
IC804-1
NJM4580E
(T1)
NJM4580E(T1)
VR805
FILTER
(50Hz–400Hz)
VR806
FILTER
(50Hz–400Hz)
FILTER
(LPF OFF HPF)
FILTER
(LPF OFF HPF)
SW801, 802
FILTER
(X1 X10)
9
1
9
1
1
9
1
9
DIRECT
(ON OFF)
DIRECT
(ON OFF)
LINE SW
LINE SW
LEVEL SHIFT
LINE SW
LEVEL SHIFT
LINE SW
Q301
2SC3624-T1L1718
LEVEL SHIFT
LINE SW
LINE SW
Q401
2SC3327-T1L1718
LINE SW
LEVEL SHIFT
LINE SW
LOWBOOST
(0dB—+10dB)
LOWBOOST
(0dB—+10dB)
C403 47p
LPF
HPF
FLAT
C753
0.1
C754
0.1
TO AMPLIFIER BORAD (2/3)
(Page 13)
AMPLIFIER BOARD
LPF
FLAT
HPF
TO AMPLIFIER BORAD (3/3)
(Page 14)
IC806
LOW BOOST
IC812
LOW BOOST
IC805, 810
L.P.F
IC803, 809
H.P.F
IC804, 811
L.P.F
IC851
PRE AMP
IC808
PRE AMP
IC807
PRE AMP
IC802
PRE AMP
IC801
PRE AMP
0
15
0
0
0
-15
0
0
0
0
0
15
0
0
0
15
0
0
0
-15
0
0
-15
0
0
0
0
15
0
0
0
15
0
0
0
-15
0
0
-15
0
0
0
0
0
0
0
15
0
15
0
0
0
0
-15
0
-15
15
0
0
-15
0
0
0
0
0
0
15
0
15
0
0
0
0
-15
0
-15
15
0
0
-15
15
0
-0.6
0
0
0
15
0
0
0.8
0
0
0.8
-0.6
0
0
0
0
-15
0
0
15
0.8
0.8
0
-0.6
0
0
0
0
0
0.8
0
0
-0.6
0
0
0
0
0
0
0
0
15
0.8
0.8
0.8
0
0
15
-15
15
9 10
7
8
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