Akai-AM32-int-sch维修电路原理图.pdf

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1、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 ,

2、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 p

3、rimary 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 2SC2910-0V77-0V7156V354V756V8-65V

4、9-65V20V-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 47KC113

5、R134D107 1N4148R145 47KTR112 2SA970C107R138C142C109R140R139C108R136R149C116R153C119R152C119R152R120 220R115 220D102 1N4148C103TR106 2SC2910TR113 2SA970TR104 2SA970R156 22KC102DL112TR116 2SA970TR105 2SA970-66V4-1V58-65V6R111 47KR110 10056V56V2-66V6D103D104R108 92R107 92C134R102 100C131 4u7 50VR101 10

6、0LEFT INR150D108D1094700uF4700uFC122W104C114C114R151IC102 HA12002Pin8Pin7Pin6Pin5Pin4Pin3Pin2Pin1R147R142R141R137IC101 521823841FEEDBACKSAFETYcollector of TR111 right channelLW111RJ101RIGHT OUTLEFT OUTTR102 2SC3381R106 220C101R105 3KDZ113DZ114R112 3KR116 680ohmW102primary supply (not traced here)220

7、V 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