Akai-AM32-int-sch维修电路原理图.pdf
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Akai-AM32-int-sch维修电路原理图.pdf
AKAI AM-32 (60W-channel)IMPORTANT : this is not the original AKAI AM-32 schematic . I have copied this scheme,following the traces and solders of PCB board of the amplifier ,when i repaired it.I dont guarantee that the whole scheme is exact and my instrument is not very precise, then IF YOU USE IT ,YOU DO IT TO YOUR RISK.Also, the schematic is not complete , but include the following circuits:- left channel final amplifier (note that the right channel has the same components name of left channel )- final power supply- safety circuit- switch board (D board)- some components dataDo not include primary power supplyTraced by MPANTEC ,with TARGET3001 FOR PCB POOL , RadioFans.CN 收音机爱 好者资料库+24V(26V7)+15V-15V+24R+VCC+VCC+15V-15V+-+VCC+Rel1-VCC+VCC+VCC-VCC+B1-BLED-B+B+B1(+56V6)-B(-66V6)+B(+66V6)-VCC(-43V)+VCC(+43V)+-D2D4D1D3BR1L4L3L2L1FuseF1startS1(DUAL NPN)TR103 2SC2910-0V77-0V7156V354V756V8-65V9-65V20V-0V60V6-0V5-0V181V12-1V12R124 3KVR101 1KTR901 2SC3116R125 1K5C133C132R118 470KR119 470KC106R159 68TR110 2SA1248TR109 2SC3119D110R157 68C105TR903 2SA1490L101R143 10R144 10C111C112R128 16R126 1001/2 R1 0R221/2 R1 0R22R127 16TR902 2SC3854R130 27KD106 1N4148R133 148KTR111 2SC224043V7R135 47KC113R134D107 1N4148R145 47KTR112 2SA970C107R138C142C109R140R139C108R136R149C116R153C119R152C119R152R120 220R115 220D102 1N4148C103TR106 2SC2910TR113 2SA970TR104 2SA970R156 22KC102DL112TR116 2SA970TR105 2SA970-66V4-1V58-65V6R111 47KR110 10056V56V2-66V6D103D104R108 92R107 92C134R102 100C131 4u7 50VR101 100LEFT INR150D108D1094700uF4700uFC122W104C114C114R151IC102 HA12002Pin8Pin7Pin6Pin5Pin4Pin3Pin2Pin1R147R142R141R137IC101 521823841FEEDBACKSAFETYcollector of TR111 right channelLW111RJ101RIGHT OUTLEFT OUTTR102 2SC3381R106 220C101R105 3KDZ113DZ114R112 3KR116 680ohmW102primary supply (not traced here)220V 50HzRadioFans.CN 收音机爱 好者资料库SW2JW51JW50JW49JW48JW47ALL SWITCHESUNPRESSEDPRESSEDLRGLGRGLRGLGRGLLLRRRLTO B-BOARDW8LRJ1TO LED PANELFROM A-BOARDTO B-BOARDLRDIRECTDAT/TAPE2AUXTUNERPHONOCDw9W10J2D-BOARDfrom power supplyto bottom boardW11RGLGRGLW7W6W5RadioFans.CN 收音机爱 好者资料库+IN2-IN2OUT2VCCVEE+IN1-IN1OUT1(155218)IC101positive feedbackBIASoverload revealingAC detectaudio signal INtemperature revealingGNDrel driverHA12002876543212SK389substrateDGSSGD7654321substrateCCBEEB2SC38817654321RadioFans.CN 收音机爱 好者资料库
