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©

 2000-3 PRINTED IN JAPAN

B51-7600-00 (S) 3344

SERVICE MANUAL

CASSETTE RECEIVER

KAC-719

SUBW

OOFER AMPLIFIER

KA

C-7

1

9

Dressing panel
(A21-4014-03)

Heat sink
(F01-1627-01)

Screw terminal
board
(E70-0820-05)

Accessory (E type only)
(W01-0797-05)

Fuse
(F52-0015-05)

Screw set
(N99-1587-05)

SUBWOOFER

AMPLIFIER

L

12dB

6dB

BASS

BOOST

OFF

INPUT   

SENSITIVITY(V)

LPF   

FREQUENCY(Hz)

GND

R

LINE IN

25Hz

15Hz

INFRASONIC

OFF

0.3

0.5

1

2

3

4

5

0.2

150

170

100

70

50

200

LEFT

RIGHT

SPEAKER LEVEL INPUT

POWER IN

FUSE (30A)

BATT

GND

P.CON(REMOTE)

SPEAKER OUTPUT

30

     SERVO 

II

 

     SERVO 

II

 

Pin jack
(E63-0834-05)

Screw terminal
board
(E70-0818-05)

Screw terminal
board
(E70-0808-05)

Screw terminal
board
(E70-0824-05)

Accessory
(W01-1515-05)

Summary of Contents for KAC-719

Page 1: ...15 05 Screw set N99 1587 05 SUBWOOFER AMPLIFIER L 12dB 6dB BASS BOOST OFF INPUT SENSITIVITY V LPF FREQUENCY Hz GND R LINE IN 25Hz 15Hz INFRASONIC OFF 0 3 0 5 1 2 3 4 5 0 2 150 170 100 70 50 200 LEFT RIGHT SPEAKER LEVEL INPUT POWER IN FUSE 30A BATT GND P CON REMOTE SPEAKER OUTPUT 30 SERVO II SERVO II Pin jack E63 0834 05 Screw terminal board E70 0818 05 Screw terminal board E70 0808 05 Screw termin...

Page 2: ...nent in the SP output turns Q38 ON through D32 and R158 When a voltage is applied to the P CON pin under this condition Q45 is turned ON via R188 positive feedback is applied by combination of Q45 and Q46 Q45 and Q46 are held at ON so the voltage at point A is almost 0 V and the SP P CON circuit is not activated This circuit holds the ON status while the DC voltage from SP is present Therefore in ...

Page 3: ...2 X09 C 3 J1 E1 X09 B 3 W116 C58 CN1 R39 VR1 R32 R33 R36 R35 R40 C5 C1 C2 R1 R2 R5 R6 R7 R34 C14 C15 W58 W80 R184 R185 W87 W96 W98 R170 R160 R194 W92 W90 W88 R23 R22 R21 R24 W57 R31 R50 W14 R92 R86 W1 W21 R90 R89 R85 R87 R166 R167 R168 Q41 Q28 Q27 W13 W2 W6 W8 a 2mv CN3 IC4 R161 C71 C72 C73 C74 W7 W3 W5 D10 W36 W50 W49 R78 R13 R25 R26 W59 W60 W61 W74 W71 W72 R180 R179 R186 R182 R178 R175 R171 R173...

Page 4: ...7k R151 3 3k R152 3 3k 7 5v R 1 53 3 3k C 7 0 10u 50 v C 79 100 0p C 69 10 u 50v R15 4 7 50 R 226 10 k R 188 100k R 2 27 10k J5 CN4 SIGMA SERVO SP SP SIGMA SERVO L1 J4 J3 P CON B GND C6 3 1 0 0 0 p C6 4 1 0 0 0 p C4 2 4 7 0 0 p C4 3 2 2 0 0 p C4 4 0 3 3 u C7 7 0 1 u R2 2 4 4 7 1 2 w R2 2 5 4 7 1 2 w F U S E C7 8 0 1 u C4 5 0 3 3 u R1 3 5 4 7 k C5 4 2 2 0 0 p L2 C5 2 330 0 u 5 0v C5 1 3 3 0 0 u 5 0...

Page 5: ...KAC 719 7 A B 1 2 3 EXPLODED VIEW UNIT Parts with exploded numbers larger than 700 are not suppied ...

Page 6: ...2 CE04DW1H220M ELECTRO 22UF 50WV C23 CE04DW1H2R2M ELECTRO 2 2UF 50WV C24 CC45FSL1H101J CERAMIC 100PF J C25 CE04DW1H100M ELECTRO 10UF 50WV C31 CE04DW1H100M ELECTRO 10UF 50WV C32 CK45FB1H471K CERAMIC 470PF K C33 CF92FV1H103J MF C 0 010UF J AUDIO UNIT X09 5320 10 TEST KAC 719 AUDIO UNIT X09 5320 10 C34 CE04DW1E470M ELECTRO 47UF 25WV C35 CC45FSL1H150J CERAMIC 15PF J C36 CC45FSL1H271J CERAMIC 270PF J C...

Page 7: ...E D29 RD7 5JS B ZENER DIODE D30 RD15JS B ZENER DIODE D31 1N5406 M DIODE D32 34 1SS133 DIODE D35 36 RD16JS B2 ZENER DIODE D37 1SS133 DIODE D39 RD7 5JS B ZENER DIODE IC1 UPC4574C IC OP AMP X4 IC2 NJM4565D ANALOGUE IC IC3 UPC494C IC SWITCHING REGULATOR IC4 UPC1237HA IC POWER AMP Q1 2 2SA992 F E TRANSISTOR Q3 4 2SC2631 Q R TRANSISTOR Q5 2SA1123 Q R TRANSISTOR Q6 2SC4137 V W TRANSISTOR Q7 8 2SC2235 TRA...

Page 8: ...estrel 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 of Panama KENWOOD ELECTRONICS BRASIL LTDA Av Moema 170 17 Andar Cobertura B Ed Maximum Service Center 04077 020 Moema São Paulo SP Brasil KENWOOD ELECTRONICS UK LIMITED Kenwood House Dwight Road Watford Herts WD1 8EB United Kingdom K...

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