Phonic-MAX2500-pwr-sch维修电路原理图.pdf

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1、+100V +100V D320 1N4935 R380 33K 1/2W p C328 390pF/100V C329 200pF/160V R377 51 C330 100N/160V Q314 2N5401 D307 1N4935 R3791K R378 51 R330 51 D321 FR602 Q310 IRFP250 D S p C317 47uF/160V R314 100 R312 1K R313 100 -15V -15V C301 10uF/50V C302 47N +15V -15V C307 1N R304 1K C304 47N C303 10uF/50V R308

2、10K Q301 2N5551 D301 1N4148 Q302 JE350 R315 4.7 1/2W C316 470pF/300V Q309 2SC4793 D306 1N4148 R329 2K2 G Q315 2SC5200 Q316 2SC5200 Q317 2SC5200 p p R372 27K 1/2W R374 18K D319 1N4935 R375 270K R376 10K D317 FR602 D316 FR602 +55V +55V p C327 100N/100V V+ SW R LD_P1 R C326 100uF/16V D315 1N5404 LD_P R

3、 ZD307 15V 1/2W D308 1N4004 C325 0.001uF R371 4.7K Q321 MJE340 ZD305 6.8V R373 30K R341 5W 0.22 R335 10 R342 5W 0.22 R343 5W 0.22 R336 10 D205 1N4004 ZD304 6.8V R327 3K Q308 BC550 R334 10 R340 100 1/2W C315 10N 100V R328 2.2K C309 1N R316 1K Q303 JE802 R317 1K -15V ZD301 7V5 ZD302 7V5 R305 3.9K 3 2

4、6 7 4 IC301A MC34081 R303 1K +15V R301 4K99 1% C306 33pF R302 75K R309 68K C310 10uF/50V SVR301 220 p p ZD303 6.8V R347 100 1/2W R326 24K R325 24K R350 5W 0.22 R349 5W 0.22 R348 5W 0.22 p D309 1N4935 R370 6.8K C318 0.0056uF R369 33K 1/2W SP_OUT R Q333 2N5401 D314 1N5404 C319 100uF/16V R368 33K C320

5、100pF C321 100pF R367 10K C322 3pF ZD306 10V 1/2W Q322 2SA1943 R355 10 R356 10 Q324 2SA1943 Q323 2SA1943 Q307 BC560 D304 1N4004 R324 2.2K R322 2K2 R354 10 C314 10N 100V R323 3K D303 1N4148 R310 68K D302 1N4148 Q304 2N5401 Q305 JE340 R318 4.7 1/2W OP_OUT/R R307 10 R306 3.9K C305 10uF/25V NP PRE_AMP/R

6、 OP_OUT/R R302: NOTE: MAX2500 USE 75K MAX1500 USE 56K MAX860 USE 51K R323:MAX2500 USE 3K MAX1500 USE 2.7K MAX860 USE 6.2K R369:MAX2500 USE 33K 0.5W MAX1500 USE 33K 0.5W MAX860 USE 15K 0.5W R380:MAX2500 USE 33K 0.5W MAX1500 USE 33K 0.5W MAX860 USE 15K 0.5W+15V +15V C3310.1uF R381 20 2W R311 10K R319

7、1K R320 100 Q306 2SA1837 C313 470pF/300V R321 100 G Q328 IRFP250 D S R360 51 D310 1N4935 R364 51 D322 FR602 Q332 2N5401 R365 10K R366 330 D312 FR602 D311 FR602 -55V -55V p C324 100N/100V -100V -100V p C323 100N/160V +15V AGND -15V AGND AGND OP_OUT/R 12 34 56 78 910 1112 1314 JP2 HEADER 7X2 PITCH 2.5

8、4 +15V AGND -15V AGND AGND AGND AGND PRE_AMP/R p p C312 47uF/160V R324:MAX2500 USE 2.2K MAX1500 USE 3K MAX860 USE 3K MAX1500 USE 27K MAX860 USE 24K R326:MAX2500 USE 24K MAX1500 USE 27K MAX860 USE 24K R328:MAX2500 USE 2.2K MAX1500 USE 2.7K MAX860 USE 5.6K R370:MAX2500 USE 6.8K MAX1500 USE 8.2K MAX250

9、0 USE 24KR325: MAX860 USE 8.2K ZD305:MAX2500 USE 6.8V MAX1500 USE 6.8V MAX860 USE JUMP Q317/Q323:MAX1500 NO USE MAX860 NO USE R336/R343/R350/R356: D321/D322:MAX1500 USE 1N5404 MAX860 USE 1N5404 D312/D317:MAX860/1500 NO USE MAX1500 NO USE MAX860 NO USE Page8PHONIC CORPORATIONMAX860 / 1500 / 2500 SERVICE MANUAL MAIN BOARD PCB RIGHT SIDE POWER AMP SCHEMATIC RadioFans.CN 收音机爱 好者资料库