Kenwood AS-3 User manual

1995-7 PRINTED IN KOREA
B51-5073-00 (K) 1781
Knob(VOLUME)
(K29-6237-08):W
(K29-6241-08):B
Top cabinet (R)
(A52-0181-08):W
(A52-0184-08):B
Top cabinet (L)
(A52-0182-08):W
(A52-0185-08):B
Knob(POWER)
(K29-6240-08):W
(K29-6244-08):B
Knob(LINE)
(K29-6238-08):W
(K29-6242-08):B
Knob(EX.BASS)
(K29-6239-08):W
(K29-6243-08):B
Phono jack(LINE 1)
(E11-0269-08)
Phono jack(LINE 2)
(E11-0269-08)
KENWOOD badge
(B43-0287-04)
Grille
(B04-0096-08):W
(B04-0095-08):B
Front cabinet
(A29-0807-08):W
(A29-0809-08):B
Phono jack
(OUTPUT)
(E11-0270-08)
DC jack(DC 12V)
(E03-0129-08)
Speaker cord
(E30-2818-08):GRY/W
(E30-2817-08):BLK/B
Rear cabinet(R)
(A02-1275-08):W
(A02-1278-08):B
Rear cabinet(L)
(A02-1276-08):W
(A02-1277-08):B
SPEAKER SYSTEM WITH AMPLIFIER
AS-3
SERVICE MANUAL
The color of this model is divided into two types ; White (W) and Black (B).
W : White version
B : Black version

AS-3
2
CONTROLS................................................................3
PC BOARD .................................................................4
SCHEMATIC DIAGRAM.............................................5
EXPLODED VIEW ......................................................6
PARTS LIST................................................................7
SPECIFICATIONS ......................................Back cover
Accessories
AC adaptor
(W08-0015-08) : M type
(W08-0017-08) : E type
(W08-0645-08) : T type
Connection cord
(E30-2802-08)
CONTENTS/ACCESSORIES

AS-3
CONTROLS
Front panel
Rear panel (Left speaker)
3
Left speaker
Power indicator
VOLUME
control knob
Power button
Line select button
(LINE 1/2)
EX.BASS button
Left speaker unit
LINE 1 input jack
DC 12V jack
(To AC adaptor)
LINE 2 input jack
OUTPUT for right speaker
Right speaker unit
Right speaker
AS-3(K) COVER( 2/15/97 14:13 y[W 3

ABCDE
PC BOARD (Component side view)
4Refer to the schematic diagram for the value of resistors and capacitors.
*It is "C104" on Schematic diagram , though "C112" is printed on PCB.
1 2 3 4 5 6 7

A
AS-3
5.3V
5.3V
5.3V
10.6V
5.3V 5.3V
5.3V
15.7V
5.3V
5.3V
5.3V
5.3V
5.3V
0V
0V
0V
0V
0V 0.6V
15.7V
15.7V
8.0V
13.2V 0.6V 11.8V
0V
14.1V
0V
0.6V 13.2V
7.8V
+B LINE
0.047
C110
0.047
C106
0.022
C153
18K
R110 1µ50
C102
22K
R114
10µ16
C152
10K
R152
100µ25
C151
10K
R151
1K 1/4W
R150
2.7K
R116 0.047
C108
330K
R118
68P
C104
39K
R112 1µ50 C114 1K R124
100K
R122
1µ50
C112 1K
R126
100K
R120
50K(B)-2
VOL101
2
3
6
5
1
7
8
8
-
+
-
+
IC103
(1/2) IC102
(1/2)
SW101-1
Rch
LINE
1-2 SW
Rch
SW102-1
+
++
+
+
(2/2)
IC103
5
6-4
+7C105
0.047 C109 0.047
IC102
(2/2)
2-4
3+1
100K
R125
+
R119
C111
1µ50 1K
50K(B)-1
VOL101
SW102-2
C103 68P
R111 39K
1µ50
C101 18K
R109
1K
R123
1µ50
C113
100K
R121
SW101-2
R113
22K
2.7K
R115
C107
0.047
R117
330K
Lch
Lch
1K
R234
1K
R235
10K
R233
100µ10
C234
470K
R236
10K
R232
22K
R231
10µ16
C233
100K
R230
SW103
4.7K
R251
POWER SW
+
-
T.S.D
BS
ST.BY
FILTER
BS
-
+
2 3 4 5 6 7 8 9 10 11 12 1
0.15
C208
C214 1000µ10
2.2
R208
100µ10
C210
0.01
C212
39K
R210
R229 22K
220µ10
C230
100µ10
C209
0.01
C211
39K
R209
0.15
C207
1000µ10
C213 2.2
R207
+
+++
+
10K
R203
1000P
C203
1µ50
C201
R201
1K
1000P
C204
1K
R202 1µ50 C202
10K
R204
+
+
C300
0.022
1000P
47K
(NORMAL TYPE)
DC-JK
L-SPK
R-SPK
+
+
R101
R103 4.7K
39K
R104 4.7K
LINE1
J1
39K
R102
LINE2
J2
R107 4.7K R108 4.7K
R106
R105
39K
39K
+
+
C232
1000µ25
+
Q201
Q202
Q203
D201
LED201
C206
47µ10
100
R206
C205
47µ10
100
R205
++
IC101
IC102,103 : BA5412S or BA5415 : BA4558 Q201~203 D201 : 2SC1815 : 1N4148
BASS
SW
OFF
ON
OFF
ON
SW
BASS
R127
C235
IC101
AS-3 (J/K)
GND LINE
SIGNAL LINE
BDFG CE
2
1
3
5
4
2SC1815 BA4558 DC voltages are as measured with a high
impedance voltmeter. Values may vary
slightly due to variations between
individual instruments or/and units.
•
CAUTION: For continued safety, replace safety critical
components only with manufacturer's recommended parts (refer
to parts list). indicates safety critical components. To reduce
the risk of electric shock, leakage-current or resistance
measurements shall be carried out (exposed parts are
acceptably insulated from the supply circuit) before the appliance
is retuned to the customer.

EXPLODED VIEW(UNIT)
AS-3
6
1
2
3
AB
Parts with the exploded numbers larger than 700 are not supplied.
AS-3(K) COVER( 2/15/97 14:16 y[W 6

AS-3
7
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New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L:Scandinavia K:USA P:Canada R:Mexico
Y:PX(Far East, Hawaii) T:England E:Europe G:Germany
Y:AAFES(Europe) X:Australia M:Other Areas indicates safety critical components.
C105-110
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CQ93M2A473J MYLAR 0.047UF J
C111-114 CE04KW1H010M ELECTRO 1.0UF 50WV
C151 CE04KW1E101M ELECTRO 100UF 25WV
C152 CE04KW1C100M ELECTRO 10UF 16WV
C153 CK45FF1H223K CERAMIC 0.022UF K
C233 CE04KW1C100M ELECTRO 10UF 16WV
C234 CE04KW1A101M ELECTRO 100UF 10WV
VOL101 R39-0006-08 VARIABLE RESISTOR 50KB X2
SW101-103 S68-0046-08 PUSH SWITCH
D201 1N4148 DIODE
IC102,103 BA4558 IC(OP AMP X2)
Q201-203 2SC1815 TRANSISTOR
C201,202 CE04KW1H010M ELECTRO 1.0UF 50WV
C203,204 C91-0757-05 CERAMIC 1000PF K
C205,206 CE04KW1A470M ELECTRO 47UF 10WV
C207,208 CQ93M2A154K MYLAR 0.15UF K
C209,210 CE04KW1A101M ELECTRO 100UF 10WV
C211,212 C91-0769-05 CERAMIC 0.010UF K
C213,214 CE04KW1A102M ELECTRO 1000UF 10WV
C230 CE04KW1A221M ELECTRO 220UF 10WV
C232 CE04KW1E102M ELECTRO 1000UF 25WV
C235 CQ93HP2A102J MYLAR 1000PF J
C300 CK45F1H223Z CERAMIC 0.022UF Z
DC-JK E03-0129-08 DC JACK (DC 12V)
J1,2 E11-0269-08 PHONO JACK (LINE 1/2)
R-SPK E11-0270-08 PHONO JACK (OUTPUT)
IC101
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BA5412S IC(POWER AMP)
IC101
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BA5415 IC(POWER AMP)
Ref. No. Add-
ress
New
Parts
Parts No. Description
Re-
marks
Desti-
nation
NO.2
MAIN PCB
PARTS LIST
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New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L:Scandinavia K:USA P:Canada R:Mexico B:Black version
Y:PX(Far East, Hawaii) T:England E:Europe G:Germany W:White version
Y:AAFES(Europe) X:Australia M:Other Areas indicates safety critical components.
601 2B
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A02-1275-08 REAR CABINET (R) (WHT) W
601 2B
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A02-1278-08 REAR CABINET (R) (BLK) B
602 2B
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A02-1276-08 REAR CABINET (L) (WHT) W
602 2B
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A02-1277-08 REAR CABINET (L) (BLK) B
603 3A
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A29-0807-08 FRONT CABINET (WHT) W
603 3A
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A29-0809-08 FRONT CABINET (BLK) B
604 2B
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A52-0181-08 TOP CABINET (R) (WHT) W
604 2B
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A52-0184-08 TOP CABINET (R) (BLK) B
605 1A
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A52-0182-08 TOP CABINET (L) (WHT) W
605 1A
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A52-0185-08 TOP CABINET (L) (BLK) B
610 3A B04-0095-08 GRILLE (BLK) B
610 3A
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B04-0096-08 GRILLE (WHT) W
611 3A B43-0287-04 KENWOOD BADGE
- B46-0100-30 WARRANTY CARD TE
-
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B60-2291-08 INSTRUCTION MANUAL(EN)
-
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B60-2292-08 INSTRUCTION MANUAL(C/TAIWAN) M
-
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B60-2293-08 INSTRUCTION MANUAL(EN/SP) M
-
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B60-2294-08 INSTRUCTION MANUAL(F/G/D/I) E
615 3B
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E30-2817-08 SPEAKER CORD (BLK) B
615 3B
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E30-2818-08 SPEAKER CORD (GRY) W
616 1A E30-2802-08 CORD WITH PLUG (3P)
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H50-1622-08 ITEM CARTON CASE AS-3(B) M B
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H50-1625-08 ITEM CARTON CASE AS-3(W) TE W
- H10-5989-08 POLYSTYRENE FOAMED FIXTURE (T)
- H10-5990-08 POLYSTYRENE FOAMED FIXTURE (B)
- H13-0189-08 CARTON BOARD (AC ADAPTOR)
- H20-0486-00 PROTECTION BAG (ACCESSORIES)
- H25-1546-08 PROTECTION BAG (SET)
635 1A
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K29-6244-08 KNOB POWER (BLK) B
A 2A,3B N09-3186-08 SCREW (M3X8)
B 2B N09-3184-08 SCREW (M3X20)
C 2B N09-3187-08 SCREW (M3X10)
D 2A,2B N09-3185-08 SCREW (M2.6X10)
640 2A,3B T07-0084-08 WOOFER (4 OHM 5W)
645 1A W08-0015-08 AC ADAPTOR M
645 1A W08-0017-08 AC ADAPTOR E
645 1A
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W08-0645-08 AC ADAPTOR T
655 1A B12-0262-08 LED (LED201)
C101,102 CE04KW1H010M ELECTRO 1.0UF 50WV
C103,104 C91-0741-05 CERAMIC 68PF J
Ref. No. Add-
ress
New
Parts
Parts No. Description
Re-
marks
Desti-
nation
NO.1
AS-3
CONTROL PCB

AS-3
SPECIFICATIONS
KENWOOD follows a policy of continuous advancements in development. For
this reason specifications may be changed without notice.
14-6,Dogenzaka 1-chome, Shibuya-ku, Tokyo, 150 Japan
KENWOOD SERVICE CORPORATION
P.O BOX 22745, 2201 East Dominguez St., Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS LATIN AMERICA S.A.
P.OBOX55-2791,Piso6plazaChase,Cl.47yAquilinodelaGuardiaPanama,RepublicdePanama
TRIO-KENWOOD U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB., United Kingdom
KENWOOD ELECTRONICS BENELUX N.V.
Meachelsesteenweg418, B-1930 Zaventem, Belgium
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
RembrückerStr. 15, 63150 Heusenstamm,Germany
TRIO-KENWOOD FRANCE S.A.
13Boulevard Ney, 75018 Paris,France
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sirtori, 7/9 20129, Milano, ltaly
KENWOOD IBERICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD. (A.C.N. 001499 074)
P.O Box 504, 8 Figtree Drive, Australia Centre, Homebush, N.S.W. 2140, Australia
KENWOOD & LEE ELECTRONICS, LTD.
Unit3712-3724, Level 37, Tower 1, Metroplaza,223HingFong Road, Kwai Fong N.T., HongKong
KENWOOD ELECTRONICS SINGAPORE PTE LTD.
No. 1 Genting Lane # 07-00, KENWOOD Building, Singapore, 1334
KENWOOD ELECTRONICS (MALAYSIA) SDN BHD
10th Floor, Block B, Wisma Semantan, No. 12 Janlan Gelenggang, Bukit Damansara, 50490
Kuala Lumpur, Malaysia
Note:
Component and circuity are subject to modification to insure best operation
under differing local conditions. This manual is based on the the General market
(M) standard, and provides information on regional circuit modification through
use of alternate schematic diagrams, and information on regional component
variations through use of parts list.
Amplifier section
Power output (EIAJ).................................. 3.5 W + 3.5 W
Frequency response ............................... 40 Hz ~ 20 kHz
Power requirement.........AC 110V ~ 120V / 220V ~ 240V
50 / 60 Hz (M type)
AC 230 V / 50 Hz (T,E type)
Speaker section
System ............... Full-range,bass - reflex,enclosure type
Seaker unit............................ 70 mm diameter cone type
Rated impedance....................................................... 4 Ω
General
Dimensions ................... 107(W) X 215(H) X 155(D) mm
Weight ............................................. 800 g (Left speaker)
730 g (Right speaker)