Akai AC-A2202 Service Manual
SERVICE MANUAL
POWER AMPLIFIER
ACA-2202
Circuitry Frame
ACA-2202
L-OUT
AMP
POWER
SW101B
LPF
HPF
3 1
VR103A
R-OUT
AMP
T151-T157
T158-T161
OFF
POWER
T162-T165
SW101A
HPF
3 1
T251-T257
T258-T261
T262-T265
LPF
OFF
PROTECT
T166,T167
T266,T267
MUTE
CONTROL
VEE
VCC
T100
T200
+/-15
T17
T01
IC02
IC03
TRANS & REGULATOR
CROSSOVER
30Hz-5KHz 12dB/OCT VARIABLE
75
75
POWER
REGULAT OR
T11-T16
T09,T10
T01-04
T22,T23
IC103B IC103A
VR104A
IC102A
3 1
IC203B IC203A
VR104B VR103B
IC102B
POWER
CONTROL
IC01
T07
T08
@ 50Hz
BOOST 0-12dB
INPUT
VR102B
AMP
IC101A
2 1
VR101B
L-IN
VR102A
IC101B
5 7 5 7
VR101A
F01
R-IN
REM
D.C.
+12V
7654321
8
D
C
B
A
LO
AV4-8.4-13
LI
AV4-8.4-13
RI
AV4-8.4-13
RO
AV4-8.4-13
C101
4.7uF/50V
L101
SHORT
R116
SHORT
C201
4.7uF/50V
T160
R170
OPEN
R171
OPEN
T161
A1013
T260
2SC2383
R270
OPEN
R271
OPEN
T261
A1013
T162
OPEN
R172
0.12/3W
R173
0.12/3W
T163
OPEN
T165
TKB688
T264
TKD718
T262
OPEN
R272
0.12/3W
R273
0.12/3W
T263
OPEN
T265
TKB688
VCC
VEE
VCC
VEE
T164
TKD718
R174
1K5
R274
1K5
R175
30K
D151
R176
56K
100uF/16V
R275
30K
T166
2N5551
C164
T266
2N5551
C162
151(C)
1N4148
T167
9014
PROTECTION
C262
151(C)
D251
1N4148
R177
C163
104(M)
R277
680/2W
D
PROTECTION
O/P
R178
4.7/0.5W
680/2W
C
T267
9014
R276
56K
R278
4.7/0.5W
C263
104(M)
O/P
SPK01
SPEKER OUT
LL+
RR+
B
A
POWER-AMP[L]
+15V
R152
+15V
R114
22K
104(M)
C106
104(M)
R113
10K
C107
563(M)
22K
C207
563(M)
3
2
5
6
3
2
5
6
IC203A
1/2 4558
IC203B
1/2 4558
-15V
IC103A
1/2 4558
56K
7
VR102B
B500K
1
VR102A
500KB
R207
1K
3
2
R208 56KR205
R107
1K
5
6
R10856K
IC102A
1/2 4558
C203
563(M)
R211
1K
R111
1K
IC102B
1/2 4558
C103
563(M)
R110
56K
1
IC101B
R204
10K
1/2 4558
R104
10K
3
2
R206
10K2
6
5
R106
10K
IC101A
1/2 4558
R105
47K
Z101
C111
OPEN
OPEN
Z201
OPEN
Z102
OPEN
C112
OPEN
Z202
OPEN
VR101B
R103
1K
VR101A
B20K
R203
1K
B20K
A
R101
1K
C102
102(C)
A
R201
1K
C202
102(C)
A
C104
563(M)
7
A
C204
563(M)
R210
56K
A
VR104B
C100K
R209
68K
C205
563(M)
C108 563(M)
R109
68K
C105
563(M)
VR104A
C100K
10K
C208
563(M)
10K
VR103B
C100K
R112
VR103A
C100K
R212
C109
R115 1K
A
R214
C209
104(M)
R215 1K
C206
104(M)
R213
10K
A
C249
104(C)
1
7
1
7
HI
OFF
LO
IC103B
1/2 4558
HI
OFF
LO
SW101B
C149
104(C)
SW101A
L-AMP
R-AMP
I/P
I/P
MUTE
C150
4.7uF/50V
R100
OPEN
R200
OPEN
C250
4.7uF/50V
R150
5.6K
2(G)
R250
5.6K
2(G)
T100
OPEN
T200
OPEN
4.7uF/50V
C151
4.7uF/50V
C251
C153
10uF/25V
R151
22K
C154
10uF/25V
3 (S)
1(D)
1(D)
3(S)
C253
10uF/25V
R251
22K
C254
10uF/25V
C152
102(C)
R252
C252
102(C)
1K
1K
R156
1K
T151
5551
*
R153
R157
8K2
100
*
R159
R154
100
8K2
T153
5401
R161
R155
1K
1K
-15V
POWER-AMP[R]
+15V
R256
1K
T251
5551
*
R253
R257
8K2
100
*
R259
R254
100
8K2
T253
5401
R261
R255
1K
1K
-15V
T154
5401
C155
15(C)
C255
15(C)
R158
100
R160
R258
100
R260
100
100
T254
5401
T152
5551
T252
5551
R162
15K
R262
15K
C157
47(C)
C257
47(C)
R164
100
R163
560
C156
100uF/25V
C158
47(C)
R167
100
R264
100
R263
560
C256
100uF/25V
C258
47(C)
R267
100
T155
5401
*
R165
4K7
2N5551
R166
1K8
T156
5551
T255
5401
*
R265
4K7
2N5551
R266
1K8
T256
5551
T157
T257
C159
47(C)
T158
OPEN
C160
473(M)
T159
OPEN
C161
47(C)
C259
47(C)
T258
OPEN
C260
473(M)
T259
OPEN
C261
47(C)
R168
OPEN
R169
R268
OPEN
R269
2SC2383
220
220
ACA-2202-AMP-PA2-4.SCH
1 2 3 4 5 6 78
54321
6
T07 2SA1013
R15
JP3
OPEN
R05
10
TH01
50KTH
t
R12
1K
130KF(1%)
R16
51KF(1%)
16
2IN+
1
C04
100U/16V
C06
100U/16V
15
2IN-
R13
27K
C09
10U/25V
14
Ref
C52
C50
104(C)
C03
100U/16V
R06
10K
C51
104(C)
T03
9014C
T02
R07
1K
C08
104(C)
R03
10k
9015C
R04
68K
1N4148
104(C)
D01
104(C)
C11
R48
56K
D
R44
10K
C
C02
47U/16V
R01
4K7
T23
9014C
T01
9015C
C01
R02
100U/16V
4K7
T22
9015C
B
A
C05
102(M)
R08
22K
12
OUT13VCC
DTC4Fback31IN-21IN+
T05
9014C
11
C12
10U/25V
C2
R14
15K
R09
33K
R25
10K
E210E1
7RT6CT5
9
C18GND
IC01
KIA494AP
T04
5401
R17
10 1/2W
R18
4K7
R19
4K7
T08
R23
R21
4K7
51K
R24
1K2
LED01
SAM3270
9014C
C13
R10
15K
R22
1K2
C07
100U/25V
473(C)
C10
47U/50V
R11
15K
R20
10K
C14
104(C)
D02
1N4148
T09
9015C
R26
220
R27
220
D03
1N4148
PROTECTION
9015C
D04
1N4004
T06
9014C
T19
R47
47
R45
OPEN
T15
R28
OPEN
1K
R29
1K
R32
47
T10
R33
OPEN
T12
FQP50N06
FQP50N06
2200U/25V"RX"
2200U/25V"RX"
C17
104(C)
T14
OPEN
C18
OPEN
C15
C16
C19
OPEN
R35
OPEN
L02
CL-310 8T 1.8uH
R34
OPEN
TR01
362315-20702
D15
OPEN
D16
OPEN
D17
1N5404
R38
OPEN
C26
OPEN
F01
L03
SHORT
D08 FR154
D07 FR154
D06 FR154
D05 FR154
D13
C25-02C
D12
C25-02N
O
O
JSZ3-06C
+12V
REM
GND
3
3
R39
10K/0.5W
R40
10K/0.5W
MUTE
P01
C22
220U/25V
C23
220U/25V
C24
104(C)
C25
104(C)
D
+15V
C
-15V
VCC
B
VEE
A
15A
15A
OPEN
OPEN
R41
OPEN
R42
OPEN
R43
OPEN
R36
*330 2W
C20
4U7/50V
C21
4U7/50V
R37
*330 2W
C27
C28
L01
SHORT
C33
OPEN
C35
OPEN
T17
OPEN
1
Z1
1N4744
Z2
1N4744
2
JUMPER
IC02
OPEN
I
I
IC03
OPEN
JUMPER
C29
3300U/50V
C30
3300U/50V
G
2
1
G
C31
104(C)
C32
104(C)
C34
OPEN
C36
OPEN
C37
OPEN
S
3
G
D
2
1
ACA-2202-POWER-PA2-4.SCH
1 2 3 4 56
PA2-4.PCB F060210
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