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SPEAKER SYSTEM WITH AMPLIFIER

AS-3
SERVICE MANUAL
İ 1995-7 PRINTED IN KOREA B51-5073-00 (K) 1781 The color of this model is divided into two types ; White (W) and Black (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 Top cabinet (L) (A52-0182-08):W (A52-0185-08):B Knob(VOLUME) (K29-6237-08):W (K29-6241-08):B Top cabinet (R) (A52-0181-08):W (A52-0184-08):B

Grille (B04-0096-08):W (B04-0095-08):B

KENWOOD badge (B43-0287-04) Front cabinet (A29-0807-08):W (A29-0809-08):B

W : White version B : Black version

Rear cabinet(L) (A02-1276-08):W (A02-1277-08):B

Rear cabinet(R) (A02-1275-08):W (A02-1278-08):B

Phono jack(LINE 2) (E11-0269-08) Phono jack(LINE 1) (E11-0269-08) DC jack(DC 12V) (E03-0129-08) Phono jack (OUTPUT) (E11-0270-08) Speaker cord (E30-2818-08):GRY/W (E30-2817-08):BLK/B

AS-3
CONTENTS/ACCESSORIES
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)

2

AS-3
CONTROLS

Front panel
Left speaker
Power indicator

Right speaker

Power button Line select button (LINE 1/2) EX.BASS button

VOLUME control knob

Left speaker unit

Right speaker unit

Rear panel (Left speaker)

LINE 1 input jack

LINE 2 input jack OUTPUT for right speaker DC 12V jack (To AC adaptor)

3

A

B

C

D

E

PC BOARD (Component side view)
1

2

3

4

5

6

7

4

Refer to the schematic diagram for the value of resistors and capacitors.

*It is "C104" on Schematic diagram , though "C112" is printed on PCB.

A

B

C

D

E

F

G

+ T.S.D FILTER ST.BY + + C232 BS 10 11 12 9 8 0.6V 13.2V C209 100µ10 + C211 R209 + R205 C205 100 47µ10 0.01 39K 7.8V C207 R207 0.15 2.2 C213 1000µ10 C203 1000P R203 10K +

1

R112 39K C104 68P C108 0.047 5.3V 2 C102 R110 1µ 50 1 3 18K + 5.3V 10.6V 8

C114 1µ50 + R118 330K

R124 1K R122 100K

IC103 (1/2)

Rch
5.3V 6 7

Rch LINE1
R102 39K R101

+

C106 0.047 R116 2.7K

C110 0.047

IC102 (1/2)

5.3V C112 R126 1µ50 1K R120 100K + OFF

BASS SW
1 2

BS 3 4 5 6 7

0V

SW102-1
VOL101 50K(B)-2

8.0V 13.2V 15.7V C214 1000µ10 C208 R208 C210 100µ10 2.2

0.6V

11.8V 14.1V C230 220µ10 +

SW101-1

5.3V

5.3V 5

+

ON

8

R114

R206 100 C206

R103 4.7K

R104 4.7K

J1

R151 10K C152 10µ16 R152 10K 100µ25 C151 + +

R150 1K 1/4W

15.7V

47µ10

LINE 1-2 SW

22K

0.15

2

C153 0.022

39K

+

+ R210 C212 39K 0.01 +

R229 22K

0V

R113

22K

SW101-2 LINE2
R106 39K

R115 2.7K

5.3V 3 C111 R125 1µ50 1K R119 100K + 4 5.3V C201 R201 1µ50

5.3V C101 R109 1µ50 18K 5 +

R105 39K R107 4.7K J2 R108 4.7K

IC103 (2/2)
+ 7 C105 0.047 C109 0.047 5.3V C107 0.047 R117 330K

+

IC102 (2/2)
1

SW102-2 ON VOL101 50K(B)-1 0V R234 1K C234 100µ10 R236

1000µ25 +

IC101 : BA5412S or BA5415 IC102,103 : BA4558

Q201~203 : 2SC1815 D201 : 1N4148

IC101

R-SPK

Lch

2

6

5.3V

OFF

4

3

Lch

1K

Q202
0V

470K

BASS SW

0V

L-SPK
+ R202 C202 1K 1µ50 + C204 1000P R204 10K

R111 39K C103 68P

C113 1µ50 +

R123 1K R121 100K

15.7V

Q201

R235 1K 0V R233 10K

POWER SW SW103
R232 10K R251 4.7K

0.6V R230 100K 0V R127 47K

DC-JK
C235 1000P C300 0.022

D201

Q203
C233 10µ16

R231

LED201

4

SIGNAL LINE GND LINE +B LINE

22K

+

(NORMAL TYPE)

AS-3 (J/K)

2SC1815

BA4558

5

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.

· DC voltages are as measured with a high
impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units.

AS-3

AS-3
EXPLODED VIEW(UNIT)
A B

1

2

3

6

Parts with the exploded numbers larger than 700 are not supplied.

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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.

PARTS LIST

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.

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Ref. No.

Add- New ress Parts

Parts No.

Description

Destination

NO.1

Remarks

C105-110 C111-114 C151 C152 C153

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601 601 602 602 603

2B 2B 2B 2B 3A

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603 604 604 605 605

3A 2B 2B 1A 1A

h@4V?fY0@? h@@3?f@@7? h1@@Ne?H5@@? hX))@N?H@&W @3e?5@& h?XX)'?(&W?W? ehIX@@@WM0 f?,@@@@@@@@@@@@@@4V f?Y0@@4OY@@@VK6@@@* f?X6@@2Y(&?)'V?@@2W eh h?Y(@J?L@'V hY(@7e?1@@3? @'V? h5@@Je?L1@@? h@@7?f h@2W?fX6@?

610 610 611 -

3A 3A 3A

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h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@&W? h?U@@e?@@S f?,@@@@@@@@@@@@@@4V f?Y0@@@W@@@@@X@@@@* f?X6@@2OY@@@VK6@@2W ehY(@@@'V? eh5@e?@3? h?H@@e?@@N hY(@7e?1@'V? h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@?

-

h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@?

615 615 616

3B 3B 1A

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-

-

H10-5990-08 H13-0189-08 H20-0486-00 H25-1546-08

H50-1622-08 H50-1623-08 H50-1624-08 H50-1625-08 H10-5989-08

E30-2817-08 E30-2818-08 E30-2802-08

B60-2292-08 B60-2293-08 B60-2294-08

B04-0095-08 B04-0096-08 B43-0287-04 B46-0100-30 B60-2291-08

A29-0809-08 A52-0181-08 A52-0184-08 A52-0182-08 A52-0185-08

A02-1275-08 A02-1278-08 A02-1276-08 A02-1277-08 A29-0807-08

POLYSTYRENE FOAMED FIXTURE (B) CARTON BOARD (AC ADAPTOR) PROTECTION BAG (ACCESSORIES) PROTECTION BAG (SET)

ITEM CARTON CASE AS-3(B) ITEM CARTON CASE AS-3(W) ITEM CARTON CASE AS-3(B) ITEM CARTON CASE AS-3(W) POLYSTYRENE FOAMED FIXTURE (T)

SPEAKER CORD (BLK) SPEAKER CORD (GRY) CORD WITH PLUG (3P)

INSTRUCTION MANUAL(C/TAIWAN) INSTRUCTION MANUAL(EN/SP) INSTRUCTION MANUAL(F/G/D/I)

GRILLE (BLK) GRILLE (WHT) KENWOOD BADGE WARRANTY CARD INSTRUCTION MANUAL(EN)

FRONT CABINET TOP CABINET (R) TOP CABINET (R) TOP CABINET (L) TOP CABINET (L)

REAR CABINET (R) (WHT) REAR CABINET (R) (BLK) REAR CABINET (L) (WHT) REAR CABINET (L) (BLK) FRONT CABINET (WHT)

AS-3

(BLK) (WHT) (BLK) (WHT) (BLK)

M M TE TE

TE

B W

B W B W

B W

M M E

B W B W B

W B W B W

IC101 IC101

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L:Scandinavia Y:PX(Far East, Hawaii) Y:AAFES(Europe)
h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@? h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?Y0@@4IX@@@WM0@@4V f?,@@@@@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@? h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@? h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@? h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?Y0@@4IX@@@WM0@@4V f?,@@@@@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@? h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@?

635 635 636 636 637

1A 1A 1A 1A 2A

h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@?

637 638 638

2A 1A 1A

h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX)@3e?5@& h?X)@N?H@&WW? ehX)'?(&W? f?,@@@@IX@@@WM0@@4V f?Y0@@4@@@@@@@@@@@* f?X6@@2OY@@@VK6@@2W ehY( )'V? h?Y(@&?L@'V hY(@7J??1@'V? e h5@@Je?L@@3? h@@7?f1@@? h@2W?fX6@?

645 645 645

640

A B C D

2A,3B 2B 2B 2A,2B

1A 1A 1A

h@4V?fY0@? h@@3?f5@@? h1@@Ne?H@@7? hX))@N?H@&W @3e?5@& h?XX)'?(&W?W? ehIX@@@WM0 f?,@@@@@@@@@@@@@@4V f?Y0@@4OY@@@VK6@@@* f?X6@@2Y(&?)'V?@@2W eh h?Y(@eL@@'V? 'V hY(@7J??1@@3? h5@@Je?L1@@? h@@7?f h@2W?fX6@?

655 1A C101,102 C103,104

2A,3B

N09-3186-08 N09-3184-08 N09-3187-08 N09-3185-08

W08-0015-08 W08-0017-08 W08-0645-08

K29-6243-08 K29-6240-08 K29-6244-08

K29-6237-08 K29-6241-08 K29-6238-08 K29-6242-08 K29-6239-08

B12-0262-08 CE04KW1H010M C91-0741-05

T07-0084-08

K:USA T:England X:Australia

CONTROL PCB

P:Canada E:Europe M:Other Areas
SCREW SCREW SCREW SCREW LED (LED201) ELECTRO CERAMIC AC ADAPTOR AC ADAPTOR AC ADAPTOR KNOB EX.BASS KNOB POWER KNOB POWER KNOB VOLUME KNOB VOLUME KNOB LINE KNOB LINE KNOB EX.BASS WOOFER

R:Mexico G:Germany

(M3X8) (M3X20) (M3X10) (M2.6X10)

1.0UF 68PF

(BLK) (WHT) (BLK)

(WHT) (BLK) (WHT) (BLK) (WHT)

(4 OHM 5W)

indicates safety critical components.
50WV J

B:Black version W:White version

M E T

B W B

W B W B W

L:Scandinavia Y:PX(Far East, Hawaii) Y:AAFES(Europe)
DC-JK J1,2 R-SPK C300 C211,212 C213,214 C230 C232 C235 C201,202 C203,204 C205,206 C207,208 C209,210 D201 IC102,103 Q201-203 SW101-103 VOL101 C233 C234
Ref. No. Add- New ress Parts

CQ93M2A473J CE04KW1H010M CE04KW1E101M CE04KW1C100M CK45FF1H223K

CK45F1H223Z

C91-0769-05 CE04KW1A102M CE04KW1A221M CE04KW1E102M CQ93HP2A102J

CE04KW1H010M C91-0757-05 CE04KW1A470M CQ93M2A154K CE04KW1A101M

1N4148 BA4558 2SC1815

CE04KW1C100M CE04KW1A101M

BA5412S BA5415

E03-0129-08 E11-0269-08 E11-0270-08

S68-0046-08

R39-0006-08

K:USA T:England X:Australia
Parts No.

P:Canada E:Europe M:Other Areas
CERAMIC ELECTRO ELECTRO ELECTRO MYLAR ELECTRO CERAMIC ELECTRO MYLAR ELECTRO DIODE IC(OP AMP X2) TRANSISTOR ELECTRO ELECTRO MYLAR ELECTRO ELECTRO ELECTRO CERAMIC CERAMIC DC JACK PHONO JACK PHONO JACK PUSH SWITCH

IC(POWER AMP) IC(POWER AMP)

VARIABLE RESISTOR

MAIN PCB

R:Mexico G:Germany

Description

0.010UF 1000UF 220UF 1000UF 1000PF

1.0UF 1000PF 47UF 0.15UF 100UF

0.047UF 1.0UF 100UF 10UF 0.022UF

10UF 100UF

0.022UF

(DC 12V) (LINE 1/2) (OUTPUT)

indicates safety critical components.
K 10WV 10WV 25WV J 50WV K 10WV K 10WV 16WV 10WV J 50WV 25WV 16WV K Z 50KB X2

AS-3

Destination

NO.2

Remarks

7

AS-3
SPECIFICATIONS
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 General Dimensions ................... 107(W) X 215(H) X 155(D) mm Weight ............................................. 800 g (Left speaker) 730 g (Right speaker)

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. 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.

KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8

KENWOOD ELECTRONICS LATIN AMERICA S.A.
P.O BOX 55-2791, Piso 6 plaza Chase, Cl. 47 y Aquilino de la Guardia Panama, Republic de Panama

TRIO-KENWOOD U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB., United Kingdom

KENWOOD ELECTRONICS BENELUX N.V.
Meachelsesteenweg 418, B-1930 Zaventem, Belgium

KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker Str. 15, 63150 Heusenstamm, Germany

TRIO-KENWOOD FRANCE S.A.
13 Boulevard 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.
Unit 3712-3724, Level 37, Tower 1, Metroplaza, 223 Hing Fong Road, Kwai Fong N.T., Hong Kong

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