KENWOOD KACX811D
Manual de Servicio

KAC-PS811D/X811D
COMPONENTS DESCRIPTION
Ref. No IC4,5 IC6 IC7 IC10 IC11 IC13 IC14 IC15 IC16 Q1,2,5,7 Q3,4,6,8 Q9 Q10 Q15,18,19,21,22,27, Signal amplification, switching Q28,37~40,42~45 Q16,17 Q20 Q23,24,35,36,41,83 Q25,29,84 Q26,30,110 Q31,33,46,109 Q47 Q52-55 Q57,58,60,61, Switching Q64,65,67~70 Q59,63 Q62 Q66 Q71,72 Q73,78 Q74-77 Q79,80 Q81,82 Q88,89,98,99 Q95,96 Q97 Q102,111 Q103,104 Q106-108 Voltage control Voltage detection Voltage detection Waveform shaping Voltage detection Current amplification Voltage control Voltage control Voltage control Voltage control Voltage control Voltage control Voltage control AVR In order to have µcom display voltage value, send voltage to it only when 5V SW ON Pcon detection Pcon over voltage detection For SP output short-circuit detection, send the output to comparator DC detection of output Switching FET drive current amplification DC/DC converter power supply ON/OFF DC/DC converter drive waveform ON/OFF 5L digital signal reception When Comm-SW of µcom is ON, turn communication system power supply ON Normally 15V power supply and over voltage control When Comm-SW of µcom is ON, turn communication system 5V power supply ON LCD backlight and illumination LED control µcom system 5V power supply. DC/DC converter switching Voltage control Voltage control Voltage control AVR AVR Voltage control AVR Voltage current converter Match the beginning of the fall to +15V when -15V power supply is OFF 5V power supply ON/OFF Fan voltage ON/OFF and limiting over voltage +15V -15V D class section predrive stage power supply ON/OFF D class section first stage supplementary power supply Over current detection when SP is shorted D class section voltage or current amplification NAND Comparator Signal amplification Element operation control Reset DC/DC converter element, will be limited to below standard voltage Signal amplification Bi-directional buffer Comparator Digital signal transmission Digital signal transmission Mute Mute To have µcom display current value, amplify potential differences of GND Send/Receive data and clock between AMP Receive from H/U data and clock Send LX-REQ-M signal to H/U Send LX-DATA-S signal to H/U Mute drive signal generation Turn audio signal OFF Application / Function Operation / Condition / Compatibility D class section reverse wave, deadtime, generation and rectification Short circuit detection of SP output For SP output short-circuit detection, send the output to comparator Communication, display, protection, etc. control Reset signal is output when voltage goes below standard voltage Voltage on secondary side, which produces the drive signal for switching

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