Kenwood KAC8402 free download

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POWER AMPLIFIER KAC-8402/8452 SERVICE MANUAL © 2005-3 PRINTED IN JAPAN B53-0250-00 (N) 1708 KAC-8452 (E type,M type) CONTROL SYSTEM Powe channel Amplifie Dressing Panel (A21-4464-02) Dressing Panel (A21-4469-02) : KAC-8452(K type) (A21-4470-02) : KAC-8402 (A21-4524-02) : KAC-8452(E type), KAC-8452(M type) KAC-8452 (K type) Fuse (40A) (F52-0016-05) KAC-8402 Accessories (W01-1606-05) Screw set (N99-1759-05) Connecting cord assy (E30-6144-05) 19cm This product uses Lead Free solder. KAC-8402/8452 BLOCK DIAGRAM SPK AL IC1 L LINE IN (A) R ISOLATION AMPLIFIER SPK AL SW1 ST/MONO ISOLATION AMPLIFIER FREQ HPF 12dB INVERT IC5 (X08) HPF 12dB INPUT SENS Q241,242 MUTE SW3 HPF/OFF IC1 (X08) MUTE POWER AMP SPEAKER OUTPUT POWER AMP SPEAKER OUTPUT Q201-225 SPK BL IC2 L ISOLATION AMPLIFIER IC7,8 (X08) B.B SW LINE IN (B) SW0 AB/A IC4 (X08) HPF IC6 (X08) LPF 18dB SW4 HPF/OFF/LPF 12dB INPUT SENS Q443,444 MUTE Q401-426 POWER AMP SPEAKER OUTPUT IC1 (X08) R ISOLATION AMPLIFIER SPK BR SW2 ST/MONO B.B SW HPF 12dB INVERT MUTE POWER AMP SPEAKER OUTPUT X09 X08 X09 DC DETECTOP OVERLOAD PROTECTOR 15V AVR DC/DC CONVERTER P CON CIRCUIT OVER VOLTAGE CIRCUIT THERMAL PROTECTION P-CON L LINE OUT (A+B) R OUTPUT LEVEL BATTERY 6dB 0dB 0dB 32.5dB 2 KAC-8402/8452 COMPONENTS DESCRIPTION PREAMPLIFIER UNIT (X08-4200-10) Ref. No. IC1 (2/2) IC1 (1/2) IC4 IC5 IC6 IC7,8 Application / Function ARch reversal buffer BRch reversal buffer Bch HPF Ach HPF Bch LPF Bch Bass boost filter Ref. No. Q220 Q221 Q222,223 Q225 Q241,242 Q280 Q282 Q401~410 Q411,412 Application / Function For ACH final current amplifying For ACH voltage amplifying step differential amplifying For ACH final current amplifying For ACH final current amplifying Mute -3dB Attenuator circuit -3dB Attenuator circuit For BCH voltage amplifying step differential amplifying For temperature compensation bias For BCH voltage amplifying step differential amplifying For BCH final current amplifying Mute -3dB Attenuator circuit For shock noise prevention P-CON ON/OFF processing Mute driver +B SW P-CON ON/OFF processing For BU excess voltage detection For excess current detection and excess current Q610 Q201~210 Q211 Q212 Q213 Q214~219 For ACH voltage amplifying step differential amplifying For temperature compensation bias For ACH voltage amplifying step differential amplifying For temperature compensation bias For ACH voltage amplifying step differential amplifying Q611~614 Q615~618 Q619,620 Q621~628 protection For output DC abnormal voltage detection For shock noise prevention Logo LED power supply For temperature detection AUDIO UNIT (X09-5840-1x) Ref. No. IC1,2 IC4 IC6 comparators Q1 Q2 Q3~8 Q9~12 Q13,14 For +15.6V AVR For -15.6V AVR DC/DC converter FET For FET driving FET drive low start SW Application / Function Input isolation amp Switching regulator controller For temperature protection and -3dB attenuator Q415~422 Q423~426 Q443,444 Q481,482 Q601 Q602 Q603 Q604 Q605 Q606 ADJUSTMENT No. ITEM ALIGNMENT P