Kenwood KACX521 free download

File name Kenwood-KACX521 caramp.pdf

POWER AMPLIFIER KAC-PS521 KAC-X521 SERVICE MANUAL © 2004-2 PRINTED IN JAPAN B53-0139-00 (N) 2439 Heat sink (F01-1751-01) FAN VOLT MENU TEMP CURR Screw (N07-0003-08) Screw (N09-4214-08) 30 456 23 FUSE(30AЧ2) POWER IN ID NUMBER Fuse (30A) (F52-0015-05) Cover (F07-1138-12): KAC-X521 (F07-1139-12): KAC-PS521 Screw set (N99-1752-05) 9 01 30 78 TO H/U REMOTE RESET Screw set (N99-1577-15) Accessory (W01-1606-05) KAC-PS521/X521 BLOCK DIAGRAM (X09-5760-10) L.P.F IC1,10 I.S.A IC1 I.F.S IC5 H.P.F ED1 LCD IC7 LCD DRIVER IC3,4,6 AMP CONT. Q101,102 POWER AMP MUTE (X08-4150-10) IC6 to H/U DC PROT to POWER AMP V PROT. u-COM CURRENT PROT TEMP PROT. Q66 5V AVR Q356,358 FAN AVR Q69 SW 5V AVR FAN Q61 +15V AVR IC2 BAT GND P-CONT DC/DC CONVERTER Q62 -15V AVR COMPONENTS DESCRIPTION PREAMPLIFIER UNIT (X08-4150-10) Ref. No IC1 IC3 IC4 IC5 LPF Lch : 6dB voltage amplification IC6 Rch : Signal 180 reverse and 6dB voltage amplification IC7 LCD driver Controlled by microprocessor Infrasonic filter Tone and volume variable 6dB voltage amplification HPF Application / Function Operation / Condition / Compatibility Controlled by microprocessor AUDIO UNIT (X09-5760-10) Ref. No IC1 IC2 IC3 Buffer DC/DC converter AMP communication buffer Application / Function Operation / Condition / Compatibility 2 KAC-PS521/X521 COMPONENTS DESCRIPTION Ref. No IC5 IC6 IC7 IC8 IC9 IC10 Q50 Q51~54 Q55~60 Q61 Q62,63 Q64,65 Q66,68 Q69 Q70,71 Q81 Q91,92 Q97 Q101,102 Q103~112 Q113~118 Q119,120 Q121~124 Q125~132 Q133~140 Q141 Q142~145 Q146,147 Q148,149 Q301~307 Q313 Q314 Q341~344 Q346 Q347~349 Q351,352 Q353~358 Q403 Q404 Application / Function H/U communication buffer Microprocessor Reset IC E2PROM Current detection Isolation amplifier 5V AVR DC/DC output driver DC/DC +15V AVR -15V AVR DC/DC converter (IC2) ON/OFF 5V AVR 5V AVR ON/OFF Power supply detection +15V AVR When P-CON is OFF, DC/DC driver stop speedy AMP communication stability power supply Mute A class first stage amplifier A class 2nd stage amplifier Final temperature compensation Amplifier current detection Final driver Final Mute control Amplifier limiter Amplifier current detection DC detection H/U communication output driver H/U communication output driver H/U communication ON/OFF H/U communication input driver H/U communication output driver AMP and H/U communication ON/OFF control BATT voltage output Fan stability power supply LCD backlight LED control LED control Controlled by microprocessor Operation / Condition / Compatibility 3 KAC-PS521/X521 MICROCOMPUTER'S TERMINAL DESCRIPTION MICROPROCESSOR : 784224YGC117 (X09 : IC6) Block Digram AMP communication I/F AMP_SCL AMP_SDA Audio control AUDIO_SCL AUDIO_SDA AUDIO_MUTE E2PROM I2C communication LX BUS I/F LX_REQ_M LX_REQ_S LX_DATA_M LX_DATA_S LX_CLK LX_RST HU_BU Display data monitor AD-I AD-V TEMP1 TEMP2 TEMP3 TEMP4 TEMP5 TEMP6 Power supply control COMM-SW D-PWER POWER-ON 5VSW V_DOWN PCON LX_CON LCD driver I/F L_DATA_L L_DATA_A L_CLK L_CE Fan control FAN1