C25
2N2
C26
2N2
CHASSIS
CHASSIS
TO STAR GND
TO STAR GND
RLO2A
RLO4A
R VSP
SP0R
SP0L
L VSP
POWER AMP
FROM RIGHT
TO SPEAKERS
L OFFSET
L PHONES
R PHONES
R OFFSET
LA
LB
LA-
LB-
RA-
RB-
RA
RB
CB1
SPK-OUT
RLO3A
RLO1A
POWER AMP
FROM LEFT
2SA1943
B C E
2SC5200
2SA872
2SA1015
2SC1815
A872
E C B
B649
TL431
LM317
1 2 3
LM317
R A K
E C B
TL431
2SB649
2SD669
1:ADJUST,2:OUT,3:IN
LM337
LM337 1:ADJUST,2:IN,3:OUT
1 2 3
LM7805
LM7805 1:IN
2:GND,3:OUT
C717
22n/250V
C718
22n/250V
C724
C727
Q704
2SC1815
Q703
2SA1015
D702
BT151-500R
D703
BT151-500R
R703
1K
R715
22K
R706
100
R708
1K
R704
1K
R705
1K
R707
100
R709
22K
R710
0.025/3W 2%
R711
100 1%
Q705
2SA1015
Q706
2SA1015
R713
470K
FP
H1
H2
L1
L2
G
52.1V AC
35.1V AC
C730
22n/250V
C731
22n/250V
40V AC
R733
240/1% MF
R735
240/1% MF
R732
6K2/1% MF
R734
6K2/1% MF
C754
22u/50V
C755
22u/50V
C756
22N
C757
22N
IN
IC703
LM317M
IN
IC704
LM337M
C750
22N
C751
22N
+V34
-V34
C748
2m2/50V
C749
2m2/50V
C752
10u/50V
C753
10u/50V
D709
1N4148
D710
1N4148
C720
22n/100V
C721
22n/100V
R746
1/1W FS
R747 1/1W FS
R748 1/1W FS
R749
1/1W FS
C732
22n/100V
C733
22n/100V
C734
1000u/100V
C735
1000u/100V
R716
1K
R717
1K
R722
33 FS
R719
1K
R718
1K
R720
1K
R724
1K
R721
1K
R730
10K
R726
1K
R725
3K3
R728
10K
R723
33 FS
R727
1K
R729
22K
C738
100u/16V
C742
10u/100V
C743
4u7/100V
C739
100u/16V
C747
22u/80V
C744
22n
C741
47P
C740
47P
C745
22n
Q709
2SD669A/KSC2690
Q710
2SC1775A
Q711
2SC1775A
Q712
2SB649A/KSA1220
Q713
2SA872
D705
1N4148
D706
1N4148
D708
1N4148
D707
1N4148
C736
47u100V
C737
47u/100V
R731
22K
C746
22u/80V
+V34
+V68
-V68
61.5V AC
Q714
2SC1775A
Q715
2SD669A/KSC2690
R736
6K2
R737
3K9
R738
270/2W FP
+V34
V34R
+12V
AC
S1
AC
S2
+
+
-
-
B705
DB104
AC
S1
AC
S2
+
+
-
-
B706
DB104
AC
S1
AC
S2
+
+
-
-
B703
KBU1004
AC
S1
AC
S2
+
+
-
-
B704
KBU1004
AC
S1
AC
S2
+
+
-
-
B701
DB101
C706
22N
C707
2m2/16V
C708
100N
C710
100N
C709
10u/16V
IN
IC701
7805
D701
1N4148
V5
C722
22n/100V
C723
22n/100V
D704
1N5401
1
2
3
4
5
6
7
8
9
CB402
9PIN
1
2
3
4
5
6
7
8
9
CB302
9PIN
10A
10A
1A
Q707
2SA1015
Q708
2SC1815
R714
22K
R768
36K 1%
R740
1K 1%
R742
1K
R789
36K 1%
C703
10uF/50V
C704
10uF/50V
1
2
3
SW2A
R744
1K
R741
1K 1%
D732
24V/0.5W
D731
24V/0.5W
SC-N
OVER CURRENT
+68V
-68V
POS 90
POS 80
+V68-V68
-68V
+68V
OVER CURRENT
SC-P
FROM VI OVER LOAD DET IN POWER AMP
D724
1N4148
D722
1N4148
R781
22K
Q723
2SA1015
+12V
RLO1B
36V
Q727
2SC1815
R788
5K6
+V34
clip
1
2
3
CB705
8
RL2C
12V
L PHONES
R PHONES
C759
10n
CHASSIS
R745
2.2
+20/-10%
C728
10000u/80V x 6
C725
0L
0R
SP0L
SP0R
STAR
GROUND
POINT
-V64
TO LEFT
POWER AMP
I/V
I/V OVER LOAD DET
FROM POS 80
FROM POS 90
(TRIG)
+V64
-V64
SOFT CLIP
1
2
3
4
5
CB704
5PIN
1
2
CB702
2PIN
1
2
3
4
5
CB703
5PIN
D725
1N4148
RLO3B
36V
Q725
2SA1015
Q726
2SA1015
D723
1N4148
D726
1N4148
R786
10K
R785
10K
SP A
SP B
L OFFSET
R OFFSET
ISC
ISC C
IRMUTE
Q722
2SC1815
R791
10K
R792
100
R793
100
C705
0.1uF
SC-P
SC-N
R21
3R3/1W FP
L2
1uH
C24
22N
R20
3R3/1W FP
L1
1uH
C23
22N
R VSP
Q729
2SC1815
D727
1N4148
R794
220K
+V34
-V34
MUTE-L
MUTE-R
PR
TO CB304&CB404
C21
22N
C22
22N
PR
RLO2B
36V
RLO4B
36V
R795
100K
R712
9K1 1%
R796
470K
D716
1N4148
R757
100K
R756
100K
R758
62K 1%
R767
390K 1%
6
7
8
4
IC705A
TL082BD
R764
20K
R765
12K
R769
20K
R770
12K
R766
10
R771
10
Q720
2SC1815
Q721
2SA1015
+V34
C764
10u/50V
C769
10u/25V
-V34
V12
C767
1uF/50V
R755
220K
IC705B
TL082BD
R752
200K
R743
470K
C761
1uF/50V
C762
1uF/50V
R759
10K
D715
1N4148
R751
27K 1%
R760
220K
1
2
3
-V12
5
R761
220K
Q730
2SC1815
R799
22
-V12
BG_D
ISC
R VSP
ISC C
1
VR701
50K
C719
1N
1
2
3
4
CB404
1
2
3
4
CB304
-V64
+V64
+V64
R797
470K
TP9
TP10
R754
10K
D714
6.8V
C760
1uF/50V
D711
BAV21
D713
BAV21
R VSP
D720
4.7V
D719
4.7V
D717
BAV21
D718
BAV21
C766
C765
V34R
Q701
2SD669A/KSC2690
R739
10
PJ701
+12VOUT
R701
1K
C714
100N
R702
68
Q702
2SC1815
Q700
2SC1815
D700
14V
R700
270
R774
56K
R773
56K
C781
330u/16V
C783
4u7/50
C782
0.22u
R782
10K
R780
10K
R777
56K
C784
47u/50
1
2
3
4
5
6
7
8
IC706
uPC1237HA
+V34R
R775
22K
R776
22K
D720
1N4148
D728
1N4148
D729
10V
Q724
2SA1015
C785
10u/50
R783
820
R784
10K
R787
10K
R778
10K
R779
220/3W FP
R790
5K1
!
RED
GRY
BLK
ORG
VIO
!
!
P1A
T2:
TI-67790B: AC 230V/50Hz
TI-67791B: AC120V /60Hz
t0
AUTORESET
230V/50Hz
120V/60Hz
0V
P1B
CHASSIS
1
2
3
4
5
CZ704
5PIN
1
2
CZ702
2PIN
1
2
3
4
5
CZ703
5PIN
MAIN
STANDBY
P2B
P2A
T2
!
t0
YEL
YEL
BLU
BLU
WHI
1
2
3
CZ711
D712
1N4148
F701
T3.15AL/250V CE
RL701
250V/10A
C702
4n7/400V
+5V
P ON/OFF
STANDBY&
!
!
C701
4n7/400V
SW1
!
1
2
3
CB711
1
2
3
CZ707
1
2
CB709
1
2
CZ709
1
2
3
CB707
1
2
CB710
1
2
3
CZ710
!
!
!
PHONE BOARD
N13C372D06
N13C372D11
N13C372D12
AC IN/OUTLET
BOARD
PSW BOARD
1
2
CZ706
AH
1
2
3
CZ712
1
2
CZ713
T6.3AL/250V AH
PHONE BOARD
R762
220/2W FP
JK701
1
2
3
CZ705
PHONE SOCKET
PHONE BOARD
R763
220/2W FP
STANDBY&PHONE BOARD
N13C372D06
R374
100
Q329
A872
Q330
C1775
R373
100
C307
22P
C302
680P
C305
22P
C315
0.1uF
R302
22K
R303
100
R312
100
R304
100
R313
27K
R305
27K
R314
100
R306
100
Q313
NOTE
Q310
NOTE
Q309
2SA1015
Q305
2SA1015
Q307
2SA872
Q306
2SA872
Q301
2SA872
Q311
NOT
Q312
2SC1815
Q308
2SC1815
Q304
2SC1775
Q303
2SC1775
Q302
2SC1775
R308
33
R320
33
R318
47K MF
R359
10/1W FS
R315
1K
R323
82 FP 1/2W
R321
39K
R317
150/1/4W 1%
R319
9K1 1/2W 1%
R327
39K
R307
82
R316
10K
R328
100
R311
1K
R310
10K
R326
100K
R324
100K
R309
82 FP 1/2W
D303
1N4148
D304
1N4148
D306
1N4148
D305
1N4148
C308
N.I.
Q314
NOTE
R330
3R3/0.5W FP
R332
330/0.5W FP
R334
4K7/3W FP
R338
3R3/0.5W FP
R341
330/0.5W FP
R344
4K7/3W FP
R337
100/1W FS
R329
100/1W FS
R331
4R7/FS
R339
4R7/FS
R336
33
R340
33
L301
10uH
L302
10uH
R345
1K2
R346
1K
Q315
KSC2690
Q317
NOTE
Q324
2SC5200
Q322
2SC5200
Q318
NOTE
R357
0.05/5W
R356
0.05/5W
R348
75 1W FP
R349
75 1W FP
R342
10K
R333
10K
C313
470P
C314
470P
Q327
2SA1943
Q321
2SA1943
D308
BAV21
D307
BAV21
C318
0.1uF
+V64
-V64
+V64
-V64
+V68
-V68
0VRA
R301
470
0VRA
0VRA
0VRA
0VRA
0VRB
0VRB
C301
10uF/50V
C303
10uF/50V
C304
10uF/50V
C306
2200u/6.3V
C311
100UF
C312
100u/25V
R335
10K
R343
10K
C316
0.1uF
C317
0.1uF
C309
0.1uF
C310
0.1uF
0VRA
0VRA
Q326
2SA1015
Q325
2SC1815
R364
6K8
C321
10u/50V
R363
22K
R361
1K
R362
15K
C320
22N
D309
1N4148
R365
22K
Q323
2SA1943
Q328
2SC5200
0VRB
LEFT POWER AMP
R322
10K 1/2W 1%
L i/p
GND
R367
T0=80 degree C
0VRB
-V68
+V68
1
2
3
4
5
6
7
8
9
CZ302
V/I OVER
0VRB
+V64
0VRB
-V64
VOP L
D302
18V
D301
18V
3IC2
TL431
3IC1
TL431
1
VR302
500
R347
220
Q316
2SA1015
1
2
3
4
5
CZ304
VOP L
R358
100 1W FP
R375
2K2
1
2
3
CZ301
3PIN
C324
0.1uF
TO CB302
TO CB301
TP1
TP3
TP2
TP4
0VRB
C322
10uF/50V
C323
10uF/50V
0VRB
0VRB
N13C372D02
ADJ DC
ADJ Bias DC
R376
220K
R377
82
R378
39K
R380
2.2
R382
2.2
R384
2.2
R386
2.2
Q319
2SA1943
R381
2.2
R383
2.2
R385
2.2
R387
2.2
Q320
2SC5200
0VRA
L SCP
L SCN
L MU
L SCP
L SCN
L MU
R351
22
C326
10uF/50V
VR301
50K
C325
10uF/50V
R379
180K
NB
NB
Q337
NOTE
Q338
NOTE
R391
1
R388
1
R389
1
R390
1
C319
0.1uF
0VRA
VOP L
1
2
CB706
2PIN
MAIN ON
+5
SPEAKER
R474
100
Q429
A872
Q430
C1775
R473
100
C407
22P
C402
680P
C405
22P
C425
470pF
R402
22K
R403
100
R412
100
R404
100
R413
27K
R405
27K
R414
100
R406
100
Q413
NOTE
Q410
NOTE
Q409
2SA1015
Q405
2SA1015
Q407
2SA872
Q406
2SA872
Q401
2SA872
Q411
NOTE
Q412
2SC1815
Q408
2SC1815
Q404
2SC1775
Q403
2SC1775
Q402
2SC1775
R408
33
R420
33
R418
47K MF
R459
10/1W FS
R415
1K
R423
82 FP 1/2W
R421
39K
R417
150/1/4W 1%
R419
9K1 1/2W 1%
R427
39K
R407
82
R416
10K
R428
100
R411
1K
R410
10K
R426
100K
R424
100K
R409
82 FP 1/2W
D403
1N4148
D404
1N4148
D406
1N4148
D405
1N4148
Q414
NOTE
R430
3R3/0.5W FP
R432
330/0.5W FP
R434
4K7/3W FP
R438
3R3/0.5W FP
R441
330/0.5W FP
R444
4K7/3W FP
R437
100/1W FS
R429
100/1W FS
R431
4R7/FS
R439
4R7/FS
R436
33
R440
33
L401
10uH
L402
10uH
R445
1K2
R446
1K
Q415
KSC2690
Q417
NOTE
Q424
2SC5200
Q422
2SC5200
Q418
NOTE
R457
0.05/5W
R456
0.05/5W
R448
75 1/2W FP
R449
75 1/2W FP
R442
10K
R433
10K
Q421
2SA1943
Q423
2SA1943
D408
BAV21
D407
BAV21
C418
0.1uF
+V64
-V64
+V64
-V64
+V68
-V68
0VRA
R401
470
0VRA
0VRA
0VRA
0VRA
0VRA
0VRB
0VRB
C401
10uF/50V
C403
10uF/50V
C404
10uF/50V
C406
2200u/6.3V
C411
100UF
C412
100u/25V
R435
10K
R443
10K
C416
0.1uF
C417
0.1uF
C409
0.1uF
C410
0.1u/80V
0VRA
0VRA
Q426
2SA1015
Q425
C1815
R464
6K8
C421
10u/50V
R463
22K
R461
1K
R462
15K
C420
22N
D409
1N4148
R465
22K
Q427
2SA1943
Q428
2SC5200
0VRB
RIGHT POWER AMP
R422
10K 1/2W 1%
R i/p
GND
VR401
50K
R466
90C THERMAL BREAKER
R467
T0=80C POSISTOR
0VRB
-V68
+V68
1
2
3
4
5
6
7
8
9
CZ402
0VRB
+V64
0VRB
-V64
VOP R
D402
18V
D401
18V
4IC2
TL431
4IC1
TL431
1
VR402
500
R447
220
Q416
2SA1015
0VRA
1
2
3
4
5
CZ404
VOP R
1
2
3
4
CZ401
R475
2K2
R471
8K2 1/2W 1%
R472
8K2 1/2W 1%
Q431
C2878
C424
0.1uF
TO CB402
C422
10uF/50V
C423
10uF/50V
0VRB
0VRB
TP7
TP5
TP6
TP8
0VRB
N13C372D03
ADJ DC
ADJ Bias DC
R476
220K
R477
82
C415
10uF/50V
R425
39K
R480
2.2
R482
2.2
R484
2.2
R486
2.2
Q419
2SA1943
Q420
2SC5200
R481
2.2
R483
2.2
R485
2.2
R487
2.2
C426
470pF
R451
22
0VRB
NB R
NB R
BG R SCP
R SCN
R MU
R MU
BG
R SCP
R SCN
R450
180K
C419
10uF/50V
Q437
NOTE
R488
1
R489
1
Q438
NOTE
R491
1
R490
1
C428
0.1uF
C413
0.1UF
AC IN
AC INLET
2
3
1
8
4
IC301A
TL082D
C327
1uF
R392
1M
R393
24K
0VRA
VOP L
-18V
-18V
2
3
1
8
4
IC401A
TL082D
C427
1uF
R452
1M
R453
24K
0VRA
-18V
VOP R
R750
3K3
R772
2K2
D740
1N4148
R396
4K7/3W FP
R395
4K7/3W FP
R495
4K7/3W FP
R496
4K7/3W FP
+64V-64V
1
2
3
4
5
1
2
3
4
1
2
3
4
5
1
2
3
4
R?
STANDBY TRANSFORMER
R336
90C THERMAL BREAKER
B C E
2SA1837
2SC4793
1 2 3
BT151
1: CATHODE
2: ANODE
3: GATE
NOT E :
Q310 Q311 Q313 Q314 Q317 Q318 Q337 Q338
Q410 Q411 Q413 Q414 Q417 Q418 Q437
Q438 AR E DIF F E R E NT F OR E AC H VE R S ION OF
C 372, P LE AS E WAT C H T HE V E R S ION NUMB E R
ON T HE AMP P C B T O MAK E S UR E T HAT :
IF IT IS V4, P LE AS E R E P LAC E T HE AB OVE
T R ANS IS T OR S WIT H 2S B 649A/2S D669A.
IF IT IS LAT E R T HAN V4.1, P LE AS E R E P LAC E
IT WIT H 2S A1837/2S C 4793.
T HE T R AC E F OR E AC H V E R S ION AR E
DIF F E R E NT , DO NOT MIX T HE M!
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