Sony XM-7557 Service Manual page 47

• SCHEMATIC DIAGRAM – AMPLIFER SECTION (1/3) –
AMPLIFIER BOARD
IC703
PRE. AMP
IC703
C103
R103 C104
NJM4580E(T1)
4.7/50V 0
22k 33P 5
7
C102 4.7/50V
6 8
R102
0
C101
R101
22k R106 22k
330
3.3k
25V
C106 47P
CNJ701
4P
FL
C206 47P
C202 R202 R206 22k
4.7/50V 22k 0 4
3
1
2
C203 R203
0 IC703
FR
4.7/50V 22k
NJM4580E (T1)
IC704
C303 R303
C304
NJM4580E (T1)
RL
4.7/50V 22k 0
33P
5
7
6 8
C302 R302 0
4.7/50V 22k R306 22k
C306 47P
RR
C406 47P
C402 R402
R406 22k
4.7/50V 22k
0 4
2
1
3
C403 R403 0 C404 IC704
4.7/50V 22k 33P
NJM4580E (T1)
C703 0.1
IC704
PRE. AMP
TO SUB-1 BOARD
S707
S710 INPUT-MODE
TESTTONE (F F+R)
R516
C514
3.3k
100P
VR707
FILTER
C515
(50Hz-200Hz)
47/16V
20KEX2
C516
0.22
R517
4.7k
9
9
R508 R512 R511
4.7M 22k 22k
R514 4.7k
IC713(1/2)
VR708
CNJ706 NJM4580E
C505 R505 LEVEL
2P C508 (T1) C511 100P
4.7/50V 22k 0 0
33P
3
L 1
C510 R513
5kc
0
100P 2 4 150
C504 0
4.7/50V
–15
INPUT R510
(MIN-
C506 10k C715
MAX)
C714
4.7/50V 0.1
0.1
B–
R
R507 22k
C507
4.7/50V IC713 IC714
PRE. AMP
B+
B–
C702 C701
220/16V 220/16V
R155 10k
IC702
PRE. AMP
C151 100P
R108 4.7k 0
0
6
7
R152
R151
C107 100P 0
R107 10k
5 8
0
0 0
150 6
7
IC709(2/2)
IC702 B+
B+ 8
5
NJM4580E NJM4580E (T1)
VR701 15
(T1) B–
R702 LEVEL
1k (MIN-MAX)
R251 0
4
10k
IC702 1 0
–15 B– R252
3
NJM4580E
2
(T1) 0
3
R701 4 0
1
1k
C251 100P
2
0 0 C207 100P
IC709 (1/2) R255
R207
R208 4.7k NJM4580E 10k
150
(T1)
IC709,710 IC708,712
R308 4.7k
H.P.F
R307 C307 100P
0
0 150
6
0
7
IC710(2/2) R355
NJM4580E 10k
IC705
5 8
NJM4580E (T1)
VR704
15 B+
(T1)
R703 LEVEL
B– C351 100P
1k (MIN-MAX)
0 6
IC705 R353
7
R352
5
22k
NJM4580E
0
8
(T1)
R704 3 4 0
1
1k
R351
10k
2
B+
C407 100P
0
–15 0
B–
R451
R407
0 R408 4.7k
10k
150
0
4
1 R452
3
R453
0
IC705 22k 2
0
C451
100P
PRE. AMP
IC710(1/2)
R455
NJM4580E 10k
(T1)
S708 B+
(US/CND)
CNJ711
B–
1
CNJ709 9P 10
CNP709 9P 10
S709
(US/CND)
1 S708
DIRECT
MODE
(ON OFF)
(LEVEL BOOST)
Q501 2SC3327-A
C512 4.7/50V 0.8
R523
0 0 10k
C513 4.7/50V
0.8
R515 IC714(2/2) IC715(1/2)
1.5k VR709(1/2) NJM4580E(T1) R525
NJM4580E R524
20KE 3 10k
(T1) 0 10k
1
R518
0
2.7k 0 IC716(1/2)
2 4 Q502
R522
6 NJM4580E
0 0 1k 2SC3327-A
0 7 3
0
1 0 (T1)
6
0
7
C518
5 8 C519
6
2 4 IC715(2/2)
1/50V 1/50V D719 7
5 8 0
1SS226
R521 NJM4580E
3.3k 5 8
R519 R520 VR710 (T1)
VR709 (1/2)
15 3.9k 2k 5KC IC714 (1/2)
20KE C520
C517
BOOST NJM4580E
BOOST 100P
0.1
LOW CUT LEVEL
(T1)
B+ 15
FREQ (0dB-+10dB)
–15
(7Hz-40Hz)
IC714 IC715
(1/2) L.P.F (2/2) H.P.F LOW BOOST
1
9P CNP702
9P CNJ702
S701
1
FILTER
C153
(X1 X10)
0.15 C156
47/16V
C152 0.15
HPF
R154 10k C157
FLAT
47/16V
R156 2.2k R157 2.2k
C154 0.015 C155 0.015
LPF
0 6 IC708
0 0 R159
6
7 7 100
FILTER
NJM4580E (T1)
R160
6.8k ( IC707
8 0
5 8
) 10k
5 NJM4580E(T1)
15
B–
–15
IC708
3 IC707 NJM4580E
3 R260
4 4
0 NJM4580E (T1)
1 1
10k
(T1)
6.8k
R257 C257 R259
2
2 0 0
0 2.2k 47/16V 100
LPF
FLAT
R256 2.2k C254 0.015 C255 0.015
HPF
R254 10k
C256
47/16V
C252 C253
0.15 0.15
IC707,711
L.P.F
S704
FILTER
C352 C353
(X1 X10)
0.15 IC711 0.15
C356
NJM4580E(T1) 47/16V
HPF
R354 10k C357
FLAT
47/16V
R356 2.2k R357 2.2k C355 0.015
C354 0.015 LPF
6 R359
0 0 0
6
100
7 7
5 FILTER 5
6.8k R360
8 0 ( 8 IC712
10k
) NJM4580E
(T1)
15
–15
IC712
NJM4580E IC711
4
3 4 R460
(T1) NJM4580E
0
1
3 10k
(T1)
6.8k 1
R456
R457
2 2
2.2k 0
2.2k 0 0
LPF
C454 0.015 FLAT
C455 0.015 C457 R459
HPF
47/16V 100
R454 10k
C456
C452 C453 47/16V
0.15 0.15
9
9P CNJ703
9P CNP703
B+
B+
B–
1 CNPJ710 10P
1 CNB710 10P
B–
B+
R714 1k R711 1K
R719 4.7k R709 4.7k R710 10k
R718 10K
0 0
D705
2 6 8
0
1SS184-TE85L
1 7
0 5
4 3
0
C744 R739 R705 R706
R708 C717
15
0.01 3.9k 10k 1.5k
160k 0.01
C716
IC716 (2/2)
C743 R738
0.01
NJM4580E
0.01 3.9k
B+ (T1)
–15
B–
IC716
LOWTEST TONE AMP
5 5
B+
B–
15
9
0
R109 IC701 R115
0.8
3.3k 10k
NJM4580E Q102
9
(T1) 2SC3327-A
0 8
5
LINE SW
0
7
Q101
6
0
R111 3.3k 0.8
2SC2712
Q103
LEVEL SHIFT
2SC3327
R110 R116
10k
4.7k C108 100P LINE SW
C110 15
0
0.22
5KC
C109
R112 R113
4.7/50V
680 22k
R114 6.8k C120
–0.6
1000P
VR703 R214 6.8k
LOW BOOST
(0dB – +10dB)
C209 R212 R213
–0.6
4.7/50V 680 22k 0
5KC
C210
R209 R210
C208 100P Q201
0.22
R216
3.3k 4.7k
2SC2712 0.8
10k
LEVEL SHIFT
0 R211 Q203
C258
3.3k
2SC3327-A
100P 2 4
0
1 LINE SW
3 R215
IC701
0 Q202
0.8
10k
NJM4580E
2SC3327-A
(T1)
LINE SW
0
L.P.F
IC701
LOW BOOST
–15
B–
Q302
2SC3327-A
15 LINE SW
IC706
LOW BOOST
0
IC706 R315
10k
NJM4580E
(T1)
0.8
0 5
0
7
0
C358 Q303
6
8
100P 2SC3327-A
R311 3.3k
LINE SW
Q301
2SC2712 0.8 R316
R309 R310
LEVEL SHIFT 10k
C308 100P C310
3.3k 4.7k
0.22 0
15
C309
R312 R313
4.7/50V
680 22k
R314 6.8k
–0.6
R414 6.8k
VR706
LOW BOOST –0.6
Q401
(0dB – +10dB)
2SC2712
R412 R413
LEVEL SHIFT
680 22k
C409 C410
0 Q403
1
4.7/50V 0.22
2SC3327-A
R410 0.8
C408 100P LINE SW
4.7k
R411 3.3k
0 R416
2
10k
1 0
0
3 IC706
4
0.8
NJM4580E (T1)
R409
R415
3.3k
10k
Q402
0
B– –15 2SC3327-A
LINE SW
XM-7557
B+
0
0
R117
10k
R118
3.3k
C220
1000P
R218
3.3k
R217
10k
0
B–
B+
0
R317
R318
10k
3.3k
C320
1000P
C420
1000P
R418
R417
3.3k
10k
0
0
B+
B–