Akai ACA 2624 Service Manual
This is the 16 pages manual for Akai ACA 2624 Service Manual.
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Extracted text from Akai ACA 2624 Service Manual (Ocr-read)
Page 1
Circuitry FrameACA-2664 ACA-2624 IC302B IC303B IC303A POWER AMP SW301B RL-OUT RR-OUT 5 7 LPF HPF OFF 3 1 7 5 VR302A VR303D VR303C IC302A IC403B IC403A SW301A 5 7 3 1 LPF HPF OFF 3 1 7 5 VR302B VR303B VR303A +12V D.C. REM F01 T07 T08 T01-04 T09,T10 T11-T16 T100,T200 T300,T400 T01 IC02 IC03 VEE VCC +/-15 T17 T166,T167 T266,T267 T366,T367 T466,T467 PTOTECT MUTE CONTROL TRANS & REGULATOR POWER REGULATOR IC01 POWER CONTROL RL-IN RR-IN VR301B VR301A IC301A IC301B 2 1 POWER AMP T451-T457 T458-T461 T462-T465 IC102A IC103A IC103B POWER AMP SW101B FL-OUT FR-OUT 3 1 LPF HPF OFF 5 7 1 3 VR102B VR103D VR103C IC102B IC203A IC203B SW101A 5 7 5 7 LPF HPF OFF 5 7 1 3 VR102A VR103A VR103B CROSSOVER @50Hz L-IN R-IN VR101B VR101A IC101A INPUT AMP IC101B 2 1 BOOST 0-12dB 30Hz-5KHz 12dB/OCT VARIABLE T151-T157 T158-T161 T162-T165 POWER AMP T351-T357 T358-T361 T362-T365 T251-T257 T258-T261 T262-T265 T22,T23
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1 2 3 4 5 6 78 A B C D 8 7 6 5 4 3 2 1 D C B A R108 56K R105 56K IC101A 1/2 4558 IC102A 1/2 4558 R101 1K R103 1K R106 10K C102 102(C) C103 563(M) R104 10K R110 56K C106 104(M) C107 563(M) VR103B C100K VR101B B20K R1071K C105 563(M) C101 4.7uF/50V R112 10K R113 10K R111 1K R109 68K R115 1K R114 22K C109104(M) C108 563(M) C104 563(M) VR102B 500KB VR103D C100K HI OFF LO FL AV4-8.4-13 R208 56K R205 47K IC203A 1/2 4558 IC101B 1/2 4558 IC102B 1/2 4558 R201 1K R2031K R206 10K2 C202 102(C) C203 563(M) R204 10K R210 56K C206 104(M) C207 563(M) VR103A C100K VR101A B20K R207 1K C205 563(M) C201 4.7uF/50V R212 10K R213 10K R211 1K R209 68K R215 1K R214 22K C209 104(M) C208 563(M) C204 563(M) VR102A 500KB VR103C C100K IC203B 1/2 4558 HI OFF LO FR-AMP FR AV4-8.4-13 R308 56K R305 56K IC303B 1/2 4558 IC301B 1/2 4558 IC302B 1/2 4558 R301 1K R303 1K R306 10K C302 102(C) C303 563(M) R304 10K R31056K C306 104(M) C307 563(M) VR303B C100K VR301B B20K R307 1K C305 563(M) C301 4.7uF/50V R312 10K R313 10K R311 1K R309 68K R315 1K R314 22K C309 104(M) C308 563(M) C304 563(M) VR302A 500KB VR303C C100K IC303A 1/2 4558 HI OFF LO RL AV4-8.4-13 R408 56K R405 47K IC403B 1/2 4558 IC301A 1/2 4558 IC302A1/2 4558 R401 1K R403 1K R406 10K2 C402 102(C) C403 563(M) R404 10K R41056K C406 104(M) C407 563(M) VR303A C100K VR301AB20K R407 1K C405 563(M) C401 4.7uF/50V R412 10K R413 10K R411 1K R409 68K R415 1K R414 22K C409 104(M) C408 563(M) C404 563(M) VR302B 500KB VR303D C100K IC403A 1/2 4558 HI OFF LORR-AMP RR AV4-8.4-13 RL-AMP FL-AMP D151 1N4148 R174 1K5 R160 100 R159 100 R158 100 R157 100 R151 22K C155 15(C) C156 100uF/25V R163 560 C158 47(C) C157 47(C) R150 5.6K C152 102(C) R161 1K R156 1K R167 100 R164 100 T154 5401 T153 5401 T151 5551 T152 5551 T156 5551 T155 5401 C161 47(C) C159 47(C) R166 1K8 R165 4K7 T157 2N5551 T159 2SA1013 T158 2SC2383 R168 220 R170 0.12/3W T161 OPEN T162 KTD718 R171 0.12/3W R169 OPEN T166 2N5551 R152 1K R155 1K C162 151(C) C151 4.7uF/50V R172 OPEN R162 15K I/P * POWER-AMP[FL] O/P T100 OPEN T200 OPEN R100 OPEN R200OPENMUTE T163 TKB688 T165 OPEN R173 OPEN R175 30K T160OPEN T164 OPEN C150 4.7uF/50V R153 7K5 R154 7K5 C154 10uF/25V C153 10uF/25V -15V +15V T167 9014 T267 9014 R178 4.7/0.5W R176 56K R177 680/2WC163 104(M) D251 1N4148 R274 1K5 R260100 R259 100 R258 100 R257 100 R251 22K C255 15(C) C256 100uF/25V R263 560 C258 47(C) C257 47(C) R250 5.6K C252 102(C) R261 1K R256 1K R267 100 R264100 T254 5401 T253 5401 T2515551 T252 5551 T256 5551 T255 5401 C261 47(C) C259 47(C) R266 1K8 R265 4K7 T257 2N5551 T259 2SA1013 T258 2SC2383 R268 220 R270 0.12/3W T261 OPEN T262 KTD718 R271 0.12/3W R269 OPEN T266 2N5551 R252 1K R255 1K C262 151(C) C250 4.7uF/50V R272 OPEN R262 15K * POWER-AMP[FR] O/P T263 TKB688 T265 OPEN R273 OPEN R275 30K T260 OPEN T264 OPEN R253 7K5 R254 7K5 C254 10uF/25V C253 10uF/25V -15V +15V R278 4.7/0.5W R277 680/2W C263 104(M) PROTECTION C251 4.7uF/50V POWER-AMP(RL] POWER-AMP(RR][SAME AS FL-CH] [SAME AS FR-CH] O/P O/P PROTECTION PROTECTION R276 56K C160 473(M) C260 473(M) C164 100uF/16V SW101B SW101A SW301A SW301B IC103B 2/24558 -15V +15V C149 104(C) C249 104(C) IC103A 1/24558 PROTECTION SPK01 FRONT OUT SPK02 REAR OUT FL- FL+ FR- FL+ RL- RL+ RR- RR+ C97 OPEN C99 OPEN GND GND 2(G) 3 (S) 1(D) 2(G) 3(S) 1(D) * * * * VCC VCC VEE VEE L101 SHORT R116 SHORT C112 OPEN A A A A A A A A A A A A A B B B C111 OPEN ACA-2624-AMP-PA4-4.SCH Z101 OPEN Z102 OPEN Z201 OPEN Z202 OPEN Z301 OPEN Z302 OPEN Z401 OPEN Z402 OPEN 2 3 1 5 6 7 1 2 3 5 6 7 5 6 7 3 2 1 5 6 7 1 2 3 5 6 7 1 2 3 5 6 7 1 2 3 1 2 3 5 6 7 1 2 3 5 6 7