Kenwood KAC-7202 Service Manual

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POWER AMPLIFIER
KAC-7202/7252
SERVICE MANUAL
KAC-7252
(E type,M type)
Except KAC-7202
Remote control
9
1 1
2
1 5
6 5
7 5
1 7
5 0
L E
V E
8 5
1 8
L
[d
B ]
4 0
F R
9 5
E Q
U E
N C
Y
[H
1 0
0
z ]
Accessories
(W01-1606-05)
KAC-7202
CONTROL SYSTEM
REMOTE CONTROL
Fuse (40A)
(F52-0016-05)
Modular cable
(E30-6240-15)
6m
Screw set
(N99-1759-05)
© 2005-3 PRINTED IN JAPAN
B53-0248-00 ( N ) 1708
Stereo Bridgeable
Powe
Amplifie
KAC-7252
KAC-7202
Except KAC-7202
Mouting hardware
Screw set
(J22-0301-14)
(N99-1766-05)
Connecting cord assy
(E30-6145-05)
19cm
This product uses Lead Free solder.
Dressing Panel
(A21-4463-02)
: KAC-7252
(A21-4525-02)
: KAC-7202
Dressing Panel
(A21-4467-02)
: KAC-7252(K type)
(A21-4468-02)
: KAC-7202
(A21-4526-02)
: KAC-7252(E type),
KAC-7252(M type)
(K type)

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  Summary of Contents for Kenwood KAC-7202

  • Page 1 KAC-7202 CONTROL SYSTEM KAC-7252 (E type,M type) Stereo Bridgeable REMOTE CONTROL Powe Amplifie Dressing Panel (A21-4463-02) : KAC-7252 (A21-4525-02) : KAC-7202 Dressing Panel (A21-4467-02) : KAC-7252(K type) (A21-4468-02) : KAC-7202 (A21-4526-02) : KAC-7252(E type), KAC-7252(M type) KAC-7252 (K type) KAC-7202...
  • Page 2: Block Diagram

    KAC-7202/7252 BLOCK DIAGRAM LPF/OFF/HPF ISO AMP POWER AMP IC7-9,13,15 IC12,16 Q201-258 IC1(X08) Q241,242 BASS LINE IN MUTE BOOST 50-200Hz 40-100Hz SP OUT L IC3(X08) MO/ST LINE OUT SENS 50-200Hz LINE OUT BASS LINE IN BOOST MUTE 50-200Hz 40-100Hz SP OUT R...
  • Page 3: Pc Board (Foil Side View)

    KAC-7202/7252 PC BOARD (FOIL SIDE VIEW) PREAMPLIFIER UNIT X08-4190-1x A/2 (J76-0069-12) W270 W275 R135 R124 W274 R136 W269 R123 W266 W264 VR1-R TP15 ISO-GND-1 W262 W268 W273 W263 W261 D-GND TP164 ISO-GND-2 W207 W257 R144 W260 TP11 W256 +15V W255...
  • Page 4 KAC-7202/7252 PC BOARD (FOIL SIDE VIEW) AUDIO UNIT X09-5830-1x A/2 (J76-0073-11) Q257 W357 R343 R261 TH202 R229 R258 C219 W102 Q218 R232 W371 C222 R248 R625 W369 Q229 Q211 Q225 W611 R174 W610 D206 R249 Q254 C217 Q252 R236 R290...
  • Page 5 KAC-7202/7252 X09-5830-1x Ref. No. Address Lch 2.5mV X09 B/2 DC voltmeter IC12 IC13 Q215 Q608 IC15 D609 IC16 R229 C219 W102 Q620 Q223 Q227 W609 R245 W608 W318 C217 C213 W317 Q101 Q207 Q201 R207 Q202 Q203 Q204 Q205 Q206...
  • Page 6 KAC-7202/7252 (X09-5830-xx) (A/2) +15V ∗ C157 0.01 +15.2V C143 ∗ ISO. AMP +15.2V D101 C108 10u50 IC16 10u50 (1/2) IC12 R101 C104 TP17 (1/2) TP52 R114 10u50 R105 R138 C117 22u35 R109 TP50 TP56 R107 4.7K R140 R118 TP55 TP60...
  • Page 7 TP144 R616 2SC1845-A TP145 TP159 TP148 3.9K P-CON 2SC2235-F LCH+ TP155 LCH- SPEAKER OUTPUT RCH- RCH+ TP150 TP152 TP151 TP153 2SC3419 TP141 D601 Q606 Q605 TP149 Q602 C618 10u50 Q623 TP156 Q601 R602 P-CON CONT. KAC-7202/7252 (1/2) X09-5830-1x A/2 (2/2)
  • Page 9: Exploded View

    KAC-7202/7252 EXPLODED VIEW X08-419 B/2 M6x10 : N07-0003-08 M4x9 : N09-4214-08 X08-419 φ3x12 : N09-6216-05 φ4x8 : N09-6218-05 X09 B/2 M4x8 : N09-6287-05 φ2x8 : N80-2008-43 φ3x10 : N80-3010-43 φ2x6 : N82-2006-48 Bundled to the φ3x8 : N89-3008-48 transistor. φ3x16 : N89-3016-48 φ3x14...
  • Page 10: Parts List

    J 1/10W N89-3016-48 BINDING HEAD TAPTITE SCREW R157 RK73GB2A473J CHIP R J 1/10W R158 RK73GB2A752J CHIP R 7.5K J 1/10W K : KAC-7252 K1 : KAC-7202 (North America) Indicates safety critical components. E1 : KAC-7252 (Europe) M1 : KAC-7252 (Other Areas)
  • Page 11 1000PF C103 CK73FB1H104K CHIP C 0.10UF E41-2277-05 FLAT CABLE CONNECTOR C104,105 CD04BJ1H100M ELECTRO 10UF 50WV E63-0921-05 PIN JACK KE1M1 K : KAC-7252 K1 : KAC-7202 (North America) Indicates safety critical components. E1 : KAC-7252 (Europe) M1 : KAC-7252 (Other Areas)
  • Page 12 RK73GB2A101J CHIP R J 1/10W R154 RK73GB2A272J CHIP R 2.7K J 1/10W KE1M1 R604 RK73GB2A103J CHIP R J 1/10W K : KAC-7252 K1 : KAC-7202 (North America) Indicates safety critical components. E1 : KAC-7252 (Europe) M1 : KAC-7252 (Other Areas)
  • Page 13 W312,313 R92-2053-05 CHIP R 0 OHM J 1/8W D255 LM1MA142WK-G DIODE W314 R92-1252-05 CHIP R 0 OHM J 1/16W K : KAC-7252 K1 : KAC-7202 (North America) Indicates safety critical components. E1 : KAC-7252 (Europe) M1 : KAC-7252 (Other Areas)
  • Page 14 TRANSISTOR Q280 2SC4081 TRANSISTOR Q282 2SC4081 TRANSISTOR Q601 2SC1845-A(F,E) TRANSISTOR Q602 2SC4081 TRANSISTOR Q603 2SA1576A TRANSISTOR Q604 2SB1241 TRANSISTOR K : KAC-7252 K1 : KAC-7202 (North America) Indicates safety critical components. E1 : KAC-7252 (Europe) M1 : KAC-7252 (Other Areas)
  • Page 15 KAC-7202/7252 PARTS LIST CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value...
  • Page 16: Specifications

    KAC-7202 ..............5.7kg KAC-7202 ............150W x 2 Normal (4Ω) (DIN : 45324, +B=14.4V) KAC-7252 ............170W x 2 KENWOOD follows a policy of continuous advancements KAC-7202 ............150W x 2 in development. For this reason specifications may be changed without notice.

This manual is also suitable for:

Kac-7252