Kenwood KAC8101D free download

File name Kenwood-KAC8101D caramp.pdf

POWER AMPLIFIER KAC-8101D/8151D SERVICE MANUAL © 2003-2 PRINTED IN JAPAN B53-0040-00 (N) 3114 Heat sink (F01-1729-11) ( ) Dressing panel (A21-4271-03) : KAC-8151D (A21-4288-03) : KAC-8101D 5 KAC-8151D only Panel (A64-3054-02) : KAC-8151D (A64-3094-02) : KAC-8101D Rear panel (A84-0348-02) Connecting cord assy (E30-6145-05) Accessory (W01-1606-05) Screw set (N99-1587-05) Control assy Modular cable (E30-6240-15) Screw set (N99-1740-05) Dressing plate (B03-5024-14) Knob (K23-1076-03) KAC-8151D only. KAC-8101D/8151D BLOCK DIAGRAM WIRED REMOTE CONTROL +0/+6/+9/+12dB ISO AMP INPUT VOL 0.2-5.0V BASS BOOST +12dB/OFF LOWPASS FILTER 50-200Hz INFRASONIC FILTER OFF/15/25Hz EXPANDER ON/OFF MUTE INPUT D CLASS AMP -15V AVR +15V AVR TRIANGLE WAVE BATT CONVERTER SW P. CON + POWER AMP OUTPUT TRANSFORMER + MIX PWM COMPEARATE AMP (DEAT TIME) OUTPUT GND THERMAL PROTECTION OVELOAD PROTECTION DC OFFSET PROTECTION COMPONENTS DESCRIPTION AUDIO UNIT (X09-5480-1x) Ref No. IC1 IC2 IC3 IC4 IC5 IC6 IC7 Application / Function Isolation amplifier Bus boost amplifier (1/2) : Lowpass filter amplifier (2/2) : Infrasonic amplifier Expander amplifier DC detection rectification amplifier Expander detection and difference output (1/2) : Triangular waveform generation (2/2) : Summing amplifier (1/2) : ASO (current, voltage comparison) detection IC8 (2/2) : DC converter control (1/2) : Triangular waveform generation IC9 IC10,11 IC12 IC15 Q1 Q3~5 Q7~10 Q11~14 (2/2) : PWM waveform generator Dead time generator Bus boost level changer DC/DC converter Mute Output FET control (current amplifier) Output FET control (current amplifier) Output FET driver Q51,52 Q53 Q55 Q61~64 Q65,66 Ref No. Q15,16 Q17~20 Q21,22 Q23~25 Q26,27 Q28 Q31 Q32 Q34 Q36 Q37~40 Q41~46 Q47~50 Output FET Speaker output current detection Output FET control power supply and control DC protection ASO DC detection IC8 (2/2) output logic invert Reduced voltage protection Over voltage protection DC/DC converter power supply DC/DC converter control Power FET driver Power FET Small-signal ± power supply When OFF quick break in a circuit of ­ power , supply for small-signal circuit Power FET control power supply Mute, LED and protection control Power FET driver Power FET Application / Function 2 + A B C D E 1 KAC-8101D/8151D PC BOARD (FOIL SIDE VIEW) AUDIO UNIT X09-5480-1x A/2 (J74-1502-11) R232 R231 R234 C232 C253 C255 Q36 E W49 W46 R216 W176 W171 W509 W125 D35 D34 W120 R275 R263 R284 B E Q31 R271 R212 R215 R260 W157 C203 Q55 D37 B B E E B Q24 R214 R255 R233 Q34 R213 W173 R218 B E 4 1 B C274 R211 R252 R254 R272 C271 E B E B C256 R264 E E B R274 R280 C231 Q32 C252 Q23 Q25 Q33 W90 C273 C275 Q37 B B E E W32 C276 R273 W48 R278 1 R259 D33 W99 R202 W167 C254 W165 R261 R262 W91 D22 IC5 W190 W185 R266 R265 R267 D62 D60 W79 D41 C272 Q39 D43 R305 R301 R303 R163 C153 R161 G R181 R185 D38 D40 D39 D30 R276 R217 W202 R258 R256 R257 R253 R2