AKAI ASR-73 Service Manual
MOTOR
C307
104
CON4
MAGIC
WAFTER1
MOTOR+
EC901
R-F
LINER
LINE OUT OPTIONAL
EC415
4K7
4.7uF
R415
Q401
9014C
Q402
9014C
4K7
R414
EC416
4u7
Bus Lines
R011
4K7
4K7
R012
R013
4K7
R014
4K7
1uF
EC902
L-F
LINEL
1uF
EC702
47uF
C701
102
C702
102
C703
102
C704
102
Level Dancing
( Optional )
R712
22K
C705
EC701
104
2200uF
20
6
4
22
12
14
IC701
TDA7385
15
11
13
1
10
33uF
EC707
C04
R016
103
10K
R017
C05
10K
103
22 1/2W
1N4148
LFOUT+
5
L-F
2
SPEAKER
LFOUT-
3
RFOUT+
21
24
23
/TA7381
16
0.47uF
EC708
R018
1M
R019
1M
D026
4148
1N4148
D701
R711
D702
17
18
19
9
8
7
D023
4148
RFOUT-
LRout+
LRout-
RRout+
RRout-
D024
4148
D025
4148
R022
AUTO ANT.
ACC B+
R-F
SPEAKER
R-L
SPEAKER
SPEAKER
R021
330K
330K
Bus Lines
+
-
+
-
+
-
+
R-R
-
dance1
C09
104
dance2
C010
104
R901
R902
1K5
1K5
EC709
1uF
LF
RF
LR
RR
22K
R229
R228
1 1/2W
R230
1K
R709
1K
1uF
1K
R701
EC703
R702
1K
1uF
EC704
R703
1K
1uF
EC705
R704
1K
1uF
EC706
R706
R708
R705
R707
100K
100K
100K
100K
Q206
2SB772
1K
R231
9014C
Q207
VCC
R1
68K
R3
100
R2
22K
AC25V2
AC25V1
-30V
CD CHANGER OPTIONAL
EC1
4u7
EC3
100uF
1234
EC2
4u7
R5
10K
R373
33K
C194
104
ZD20
5.1V
R4
10K
IC9
NM4558N
R377
2.2
R376
2.2
EC1 47u/16V
C265
D51
4148
5678
33uF/50V
R6
R8
R10
R12
EC7
100uF
R9
R11
R13
R7
D52
4148
22K
22K
4K7
5K6
22K
4K7
5K6
22K
2SB882
Q73
R374
ZD21 12V
EC6
10uF
CON1
CDC CONN.
EC4
4u7
EC5
4u7
TRAN2
220uF/16V
ZD22 6V8
R369
1K
Q72
9014C
R371
560
2K7
R370 3K3
67
1
3
8
NC
4
5
2
R010
1M
ZD01
5V6
R375 10
C290
R372
22K
D53
4148
C195
430PF
TO E.VOL IC R-CD
12PIN CONNETOR
203
100uF
C212
EC206
IC401- 11
TO E.VOL IC L-CD
IC401- 15
R233
100
1
ICGND
2
LAMPGND
3
4
5
6
CON3
7
8
9
10
11
12
LAMP+
10V
ZD204
R131
R132
15K
!
R114
100uF
Q102
EC112
EC305
100uF
47
R110
R112
CF102
10K
330
10.7MHZ
Q104
9018F
R113
C103
1K
203
R106
47K
10
R115
EC101
Q103
9012G
R116
4K7
R117
10K
R107
4K7
R109
10K
637
T105
3
4
2
6
1
3
Q115
4
Q114
9014C
2
6
1
634
T106
C123
10K
203
R155
22uF
C125
5P
R154
I321
100K
VD102
EC114
0.22uF
C124
102
150
R164
R166
100
Q120
9014C
R308
2K2
C305
223M
220K
R310
Q301
9014C
Q302
220K
9014C
R311
C306
223M
R309
2K2
1K
R203
1K
R204
1K
R205
203
C203
R031
4K7
Q02
9014C
C102
403
10.7MHZ
R101
1K
C15
3P
1K
D106
1N4148
D107
1N4148
10K
4
O/P1
VCC
NF
NC
NF
KIA6225S1
O/P2
203
C201
DIR
WAFTER-5PIN
C101
CF101
330
470
R111
5K6
R102
R103
5K6
R100
Q101
100
9014C
9012G
C16
R105
10P
4K7
D101
1N4148
47
R108
Q112
9014C
R151
330K
Q113
9014C
104
R152
R153
1K
1M
C121
R162
EC113
2u2
2K2
104
C130
Q119
9014C
R302
100K
3
C303
223M
R304
2
EC304
5K6
R306
33
100uF
9
R307
33
R305
7
5K6
C304
223M
6
100K
R303
203
C202
R207
1K
R208
4.7 1/2W
8
FM-OSC
7
GND
6
IF-OUT
5
VT
TUN101
TUNER1
4
B+
3
AGC
2
ANT.
GND
1
R104
10K
PAD1
ANT
ANT.
R173
100
EC111
22uF
L101
EC110
4u7
4.7uH
103
R150
C118
R149
332M
1K
C119
D022
D105
1N4148
4148
403
C120
R161
R160
8K2
R163
470
C13
102M
Q118
9014C
R301
220
6V8
EC301
ZD301
220u
EC302
TAL IN
1
I/P1
4u7
C301
202
5
GND
202
C302
IC301
EC303
TAR IN
8
I/P2
4u7
EC205
100uF
A1273
Q208
TA/RA
TAMUTE
22K
R206
CON2
R175
56
6
6
4
T101
4
T102
642
643
1
3
1
3
R123
R119
430P
C104
20PF
TC101
I321
VD101
R118
47K
C122
20P
1346
C126
647
25P
T107
9014C
1346
R156
203
R158
C127
10K
5P
C128
I321
100K
R157
VD103
R165
1K5
D108
1N4148
C131
103M
Q122
9014C
Q121
9014C
R015
4K7
R312
5K6
R313
5K6
EC306
22uF
8K2
47K
C106
82P
C105
270P
D103
36
1N4148
R120
D102
1N14148
AM-SD-ADJ
1K
100K
R121
9014C
Q105
R122
22K
203
C129
646
T108
470
9014C
Q123
C132
103
NETDO
R167
33K
R168
100K
CDP SEL2
EC FUC
EN 2 color
EN MW IF
D017
ta alarm
RF-AGC
1
3u3
R171
EC106
10K
R159
22K
R172
10K
103
C501
D011
EN coder on
D012
D021
CDP SEL1
D013
ENSEEK
D020
D019
D014
DISFADER
D015
D018
DIS MW
D016
PI MUTE
R08
1M
C03
104
C107
102M
!
5K
R124
VR101
R126
33K
33K
R125
3K3
SNC
OSC
HCC
ANT-O
RF-AGC-BYPASS
SW1
234567 8910 11 12 13 14 15 16 17 18
1uF
EC107
R142
10K
Q116
9014C
5pF
C502
47uF
EC501
103
R501
1K
C503
R502
1K
R039
D010
DISLOUD
D09
ENAUX
D08
ENLOCAL
D07
PT2313
D06
ENMTL
D05
CD LAST
METAL(DIO IN5)
1
D04
DOLBY(DIO IN4)
2
ENLW
MS(DIO IN3)
3
TA(DIO IN2)
4
SENS1O(DIO IN1)
5
D03
DIO OUT1
6
Lcdbar
DIO OUT2
7
DIO OUT3
8
GND
9
VDD
10
AMUTE
11
SENS1IN
12
CDP DATA
13
CDC DATA
14
2 COLOR/ALARM
15
16
FRONTDO
R09
4K7
LED
Q107
9014C
R127
Q106
10K
9014C
C108
332M
S-METER
MIX-OUT1
L501
1uH
D02
4148
1uF
CF103
455KHZ
29303132333435
VCO
GND
PILOT-DET
HIGH-CUT-CONTRL
GND1
AGC
AM-IF-IN
MIX-OUT
C114
103M
R143
1
6
2K2
2
4
3
638
T103
I/O-5/CLKI/O-6
12
OT-4
VDD
13
MW-OUT
AM-OSC
14
LW-OUT
FM-OSC
15
GND
FM-OUT
MW-FM-IF
16
DATA
17
AGC-OUT
CLOCK
18
CE
I/O-7-SCIN
19
XT-1
DO1
20
XT
DO2
IC501
TC9257P
47
R503
C2
203
!
R030
1K
D029
4148
1K
CDPO
PLL CD
PLL DO
PLL CK
TAPE IN
AUX/CDC
TAPEOUT
TAPE DIR IN
TAPE MUTE IN
IC01
RS8802-001
AGND
VDD
VR CLK
FRONTCE
FRONTDI
VOL B
VOL A/C
VR DATA
FRONTCLK
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
NADI2
NETDI
NVDD
NCLOCK
NETCE
EC102
ST-IF-BUFF
FM-IF-IN
10K
1011
9
8
7
6
5
4
3
2
1
20P
C504
PLL CE
LOCAL
AF MUTE
DANCE3
KEYADI1/FRT DET
KEYADI2
dance2
NADI1
5K6
R128
SD
IF-BYPASS
403
C133
450KHZ
CF104
R174
R038
10K
4K7
R05
49505152535455565758596061626364
STIN
BEEP
MONO
MUTE OUT
STANBYOUT
CDP BUS
CDC BUS
BACKUP(ACCIN)
RDSCLK
STATION DETECT
DANCE1
DANCE2
dance1
PHASE-COMP
SW2
SYS POW
X-OUT
RESET
AVDD
AVREF
RDSDATA
TELMUTE
C115
GND
X-IN
GND
VDD
IC101
DBL1091
403
EC115
100uF
Q01
9014C
R037
100K
R036
4K7
NC
0.22uF
PHASE-COMP1
REG
10uF
EC108
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
R02
1M
R01
R00
C00
EC103
1uF
R06
C109
403
EC104
L-OUT
R-OUT
VCC
MUTE-ADJ
R145
10K
R144
120K
27K
R146
C117
203
47K
R07
100K
C01
27P
R035
1K
100K
1M
102
MPX-PLL-IN
OD-DET
Q501
8050D
8V2
ZD501
7.2M
1uF
EC109
9014C
C02
30P
EC116
C110
102M
VR102
25K
100P
4u7
EC105
19202122232425262728
AF-OUT
MPX-IN
AFC
FM-SD-ADJ
1962
T104
1
6
2
4
3
C116
104M
Q117
R148
4K7
102
C505
47uF
Q601
9013G
5V6
ZD601
R034
4K7
R033
100
CF201
D01
4148
100K
R03
100
SW6
EC01
4u7
4u7
EC602
R04
1K
100
R129
R133
Q108
1K
9015C
R169
100K
C111
330K
R130
!
VR103
R147
25K
1K5
R505
10
R504
102
C506
EC502
100
102
R602
C606
1K5
R603
47uF
102
C607
C209
203
10K
R219
4K7
R220
C208
203
100
9014C
Q202
R032
3K3
R218
R221
1K
!
2V6
ZD101
C113
C112
273M
R134
1K
EC402
1uF
L-RA
L-CD
15 16 17 18 19 20 21 22 23 24 25 26 27 28
IC4 15
1uF
EC413
R412
22K
R410
56K
R222
47K
R223
EC401
1uF
L-TA
L-IN
22K
R224
9014C
Q203
273M
R135
1M
C401
104
L-LOUD
L-OUT
C405
104
EC408
4u7
5K6
1uF
EC414
C409
223M
CD OPERTION
9013G
Q204
5V6
ZD203
1N4148
IC4 11
R-CD
LI-BAS
R401
R411
9014C
Q109
47K
R136
D104
Q110
9015C
47K
R138
100K
R137
C403
C402
EC403
EC404
EC405
104
4u7
1uF
1uF
272M
R-IN
R-TA
R-RA
R-TRE
R-OUT
R-LOUD
IC401
TDA7313D
RI-BAS
RO-BASRRLRRFLF
LO-BAS
C406
C408
C407
EC411
EC410
EC409
104
104
104
1uF
1uF
1uF
R403
R404
R405
R402
1K
1K
5K6
1K
22K
R413
223M
C410
L-CD
R-CD
150
R226
C210
1K5
R227
102
102
47uF
C211
EC204
9012G
22K
Q205
R225
C404
272M
EC412
1uF
R406
1K
10K
R140
R139
47K
Q111
9014C
22K
R141
EC407
EC406
22uF
ZD401
220uF
1234567891011121314
C411
104
GND
VDD
CREF
L-TRE
82 1/2W
D-GND
SDA
SCL
R408
R407
22K
22K
1M
R417
10V
1K8
R419
R409
1K8
R418
1M
R416
LF
RF
LR
RR
DANCE1
DANCE2
NADI1
AC25V
-30V
AC25V
NVDD
NADI2
NADI1
NETDI
NETCE
NCLOCK
NETDO
Bus Lines
SL1-RDS/VFD
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