AKAI AM32AKAI AM32, Schematy elektroniczne
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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 don't 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 component's name of left channel ) - final power supply - safety circuit - switch board (D board) - some components data Do not include primary power supply Traced by MPANTEC ,with TARGET3001 FOR PCB POOL , W102 R116 6 80ohm W111 R +B1(+56V6) L -B(-66V6)+B(+66V6) LEFT IN primary supply (not traced here) + B star t F1 R112 3K R101 100 DZ11 3 BR1 DZ114 S1 Fuse D3 ~ D1 C122 - + +VCC(+43V) D2 56V2 56V D4 4700uF ~ C101 R106 220 +15V +24V(26V7) -15V 4700 uF -VCC(-43V) -0V77 C131 4u 7 50V W104 R151 TR102 2SC3381 -0V 71 R150 +VCC (DUAL NPN) + D10 9 D108 IC102 HA12002 +VC C -1V58 Pin1 Pin2 Pin3 Pin4 Pin5 Pin6 Pin7 Pin8 -B D104 D103 -65V6 T R103 2SC2910 R153 -66V6 -66V4 R111 47K R110 100 R152 C119 +B 1 TR104 2SA970 TR105 2SA97 0 56V8 56V3 C103 C102 LED DL112 T R 113 2SA970 TR116 2SA970 54V7 R149 TR106 2SC2910 R156 22K -65V9 D102 1N4148 collector of TR111 right channel R120 220 -65V2 +VCC R115 220 R13 4 C113 -B TR112 2SA970 R135 47K 43V7 +VCC SAFETY R145 47K R130 27K TR111 2SC2240 C105 TR109 2SC3119 R133 148K D107 1N4148 R12 4 3 K 1V12 TR902 2SC3 8 54 +VCC -0V18 R157 68 0V6 D106 1N4148 R127 16 VR101 1 K + 24 D110 1/2 R1 0R22 L101 0V -0V5 Rel1 R143 10 R144 10 1/2 R1 0R2 2 J10 1 -0V6 RIGHT OUT LEFT OUT TR110 2 SA1248 C111 R136 +15V -VCC -1V12 R1 59 68 R128 16 IC101 5218 8 3 TR903 2SA1490 C112 + - C1 07 C 133 C 132 1 -VCC 2 4 R13 7 -15V C106 C109 C108 R139 FEEDBACK C142 R142 R147 + D-BOARD W8 TO B-BOARD L R TO LED PANEL R W7 W11 DAT/TAPE2 R G L G R G L L L TO B-BOARD W10 R L w9 AUX L DIRECT W6 R TUNER R G R G L FROM A-BOARD R L J2 PHONO W5 ALL SWITCHES R G G R G L PRESSED CD UNPRESSED from power supply J1 to bottom board OUT1 VCC OUT2 +IN1 -IN2 VEE +IN2 substrate relè driver GND temperature revealing audio signal IN AC detect substrate overload revealing BIAS positive feedback -IN1 [ Pobierz całość w formacie PDF ] |
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