BGW-750E-pwr-sm维修电路原理图.pdf

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1、RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 BRNBRN RED ORG YEL GRN BLU BLK 14 AWG WHT 14 AWG 120V NEMA 5-15P 14AWG - 3 COND. 5FT. BLK BLK WHT 9008-2502 PCB ASSY RED 16 AWG 20000uF / 100v 20000uF / 100v GRN 14 AWG ABCDEFBCA SW102 - RSW102-L ORG ORG GROUNDEDSLOW SPEED 9008-0764 FAN / GND ASSY P1 P

2、2CHS / GND GRN 18 AWG BLK 16 AWG BRN 22 AWG ORG 22 AWG ORG 22 AWG BRN 22 AWG 1N4004 1N4004 PWRCLIPCLIP POWER ONRIGHTLEFT TRUE CLIP DELY TURN-ON / FAST-OFF +16V 6.4V 0V BCA P4P5P6P7 J4J5J6J7 GND NC NC P302 J302 A D B E F C J301P301 AC LINE VOLTAGE XFMRBRN RED ORG YEL GRN BLU FAN BRN-L1/ ORG CKT. BREA

3、KER 100V L 1 (3) L 2 (4) N / C L 2 (4) L 1 (3) N / C ORG 25 A N / C L 1 (3) 20 A L 1 (3) 120V ORG N / C YEL ORG L 2 (4) L 1 (3) 208V 15A N / C N / C YEL ORG L 1 (3) 220V 10 A N / C ORG L 1 (3) 240V L 2 (4)YEL REDREDORG N / CN / CN / C L 2 (4)L 2 (4)L 2 (4) 10 A PRIMARY WIRING CONNECTION CHART 9008-0

4、753B 750F DISPLAY BOARD MODULE (FOR 750G, 9008-0763 DISPLAY IS USED, SEE DRAWING 9600-0763 FOR DETAIL) 3. SW1, R13, R23 ARE FRONT PANEL CONTROLS. SW701, SW702, SW703 ON REAR PANEL. 2. ALL CAPACITORS IN uF / WORKING VOLTS. 1. ON 9008-0753B PCB, ALL RESISTORS 1/4 W 5% CARBON FILM UNLESS NOTED OTHERWIS

5、E. 4. J1 IS REAR PANEL BARRIER STRIP. J11, J12, J21, J22 ARE 5-WAY BINDING POSTS. 5. TS1 IS INTERNAL THERMAL SWITCH IN POWER TRANSFORMER T1. 6. REFER TO PARTS LIST. 7. FOR ACTIVE BALANCED INPUT MODULE DETAILS, REFER TO SCHMATIC 9008-0762. GRY GRY 100 DEG C. N. C. 321546891 171 0 I/O CONNECTOR TO 100

6、1-8010 AMP MODULE CLIP LIMIT N. C. SIGNAL GND TURN-ON / FAST - OFF SIGNAL INPUT V- SUPPLY V- SUPPLY POWER GND V+ SUPPLY V+ SUPPLY OUTPUT P102 OUTPUT P101 CDEFAB HPF FLT Lch Rch HPF HPF I/O CONNECTOR TO 1001-8010 AMP MODULE V+ SUPPLY CLIP LIMIT SIGNAL GND OUTPUT 68 POWER GND TURN-ON / FAST - OFF 91 1

7、3 P201 V- SUPPLY SIGNAL INPUT 104 N. C. OUTPUT V- SUPPLY 21 P202 7 V+ SUPPLY 5 E F B D C A FECBDA 9008-0762 ACTIVE BALANCED INPUT MODULE P711 J711 N.C.N.C.N.C. UNBAL INPUT BAL. INPUT INPUT UNBAL INPUT BAL. MODE SWITCHES J712 P712 J713 P713 N.C. N.C. R13 R23 LF. CH. LEVEL CONTROL RT. CH. LEVEL CONTRO

8、L LF. CH. OUTPUT RT. CH. OUTPUT GND GND DETENTED DETENTED BLK CLR CLR CLR SH CLR SH SH BLK BLK BLK CLR BLK CLR CLR BLK 22AWG. CLR 22AWG. 2-COND. SHIELD 22AWG. 2-COND. SHIELD 2-COND. SHIELD RED 16 AWG RED 22 AWG RED 16 AWG RED 16 AWG RED 16 AWG RED 22 AWG BLK 22 AWG BLK 12 AWG BLK 22 AWG WHT 16 AWG W

9、HT 16 AWG WHT 22 AWG WHT 16 AWG WHT 16 AWG +86.3V -86.3V WHT 16 AWG BLK 20 AWG L1 L2 INPUT MODE SWITCHING STEREO DUAL MONO BRIDGE MONO BLK 22 AWG BRN 16 AWG BRN 16 AWG BLK 16 AWG BRN 22 AWG GRN 16 AWG BLK 16 AWG GRN 16 AWG GRN 22 AWG VIO 22 AWG YEL 22 AWG VIO 22 AWG YEL 22 AWG BRN 22 AWG 9512-0760 C

10、HASSIS WIRING SCHEMATIC MODEL 750F / G C 11 Title SizeDocument NumberRev Date:Sheet of BGW Systems, Inc. 13130 Yukon Ave. Hawthorne, CA 90250 + C302 47uF 35V C11 0.1uF/500V 22K LOG SW1 20A BREAKER + _ 25A/400V R309 47K SW701 + - IC301A LM339 5 4 2 3 12 R308 47K + - IC301B LM339 7 6 1 S2 + - IC301C L

11、M339 9 8 14 S3 T 0900-9000 + - IC301D LM339 11 10 13 SW703 D308YEL 55 DEG C. N.C. R310 680 R301 1K 120V 19W 70 CFM FAN R411 680 R311 680 J12 RED R302 4.7K R303 200K R40647K J22 RED D306 IN4148 4.7K R304 +C13 R305 1K D307 IN4148 D305 GRN C1 0.1uF/500V + C14 C12 0.1uF/500V R307 200K R407 200K F301 1.5

12、A R12 10K 2W D301 D302 D303 R11 10K 2W 55 DEG C. N.C. D304 D406 IN4148 + C301 470uF 25V D407 IN4148 C403 1uF 50V NP R30647K J21 BLK R409 47K + - J11 BLK R408 47K 22K LOG - + SW702 R410 680 R1 300 / 20W D409 RED D408YEL D309 RED Q301 A13 C303 1uF 50V NP TANT GRN GRN GRN YEL GRN GRN GRN YEL GRN GRN YE

13、L GRN GRN GRN GRN GRN 51 dB DISPLAY RED 10V 1N751 TANT GRN YEL GRN GRN GRN RED GRN YEL GRN GRN GRN GRN GRN YEL 51 dB DISPLAY GRN GRN GRN 35V 4X1N4004 D33635V AC AC D335 TANT POWER SUPPLY D334 IDLE 4.9V 0.5W POWER ON INDICATORS 0.05V 10V XFMR OVER TEMP 0.5W 15.0V INDICATOR RED TURN-ON DELAY / TRANSFO

14、RMER OVER TEMP / IDLE BLINKING GRN 1N751 TANT GRN 9.7V TANT 0 V DC OFFSET 14.9V 25V 0.5W RED 1/2W DC OFFSET INDICATOR LEFT RIGHT RED REDRED RED CLIPPING INDICATOR POWER SUPPLY IMBALANCE RED 0.5W DC OFFSET 0.5W 14.9V RED 0 V 25V INDICATOR TANT DC OFFSET 1/2W 350A only JP400 JP300 350A only TURN-ON DC

15、 OUTPUT B- 50V 1N4740 B+ 1N4740 5.0V +10V +1V CLOSE 100 DEG NORMAL 48dB-DisplayA 48dB-Display C 11Monday, September 22, 2003 Title SizeDocument NumberRev Date:Sheet of BGW Systems, Inc. 13130 Yukon Ave. Hawthorne, CA 90250 +16V +16V B (+5.0V) B (+5.0V) B (+5.0V) B (+5.0V) B (+5.0V) +16V +16V +16V +1

16、6V R323 10K D419 D308 D407 Q328 2N4401 D303 R305 10K N.C. Q302 2N4401 R425 100K D317 Q404 2N4401 D316 R-HI REF OUT REF ADJ MODER-LOV- V+ SIGNAL IC401 LM3915 1 2 4 9 8 7 6 5 10 11 12 13 14 15 16 17 18 3 D421 R330 0 Ohm J5 D311 D313 R406 10K + - IC303B TL074 5 6 7 +C307 47uF R407 10K R409 10K R454 22K

17、 R353 22K + -IC305C LM339 9 8 14 D408 R345 1K R405 10K D426 1N4148 R341 47K J6 + C304 10uF/50V D427 1N4148 D416 J302 A B C Q303 2N4403 +C405 1uF/25V +C305 1uF/25V D412 R342 100K + - IC304B LM358 5 6 7 R34047K Q401 2N4403 +C408 10uF JP300-2 D418 R343 100K J7 D330 D314 D420 N.C. R304 10K +C309 47uF +

18、-IC305D LM339 11 10 13 D323 + - IC303C TL074 10 9 8 R420 10K B R301 680 D324 D312 R354 22K D415 Q403 2N4403 R320 10K R418 820 R419 4.7K D306 R346 1K Q402 2N4401 R412 820 D326 1N4148 D307 D310 R319 4.7K R426 1K R348 1K D320 R416 470 R453 22K Q312 2N4401 Q305 2N4403 R424 240K R322 180 R318 820 R423 10

19、K R347 3.9K D402 + _ D333 Q311 2N4401 R352 1M B R-HI REF OUT REF ADJ MODER-LOV- V+ SIGNAL IC402 LM3915 1 2 4 9 8 7 6 5 10 11 12 13 14 15 16 17 18 3 D321 D413 R338 47K R350 47.5K 0.5W +C302 1000uF R351 1M R327 680 R313 4.7K Q301 2N4403 Q310 2N4403 D325 1N4148 R421 10K R311 47.5K R321 10K R326 1K + -

20、IC305A LM339 5 4 2 3 12 D302 R337 1K Q405 2N4403 R404 10K R315 10K D417 16V + - IC305B LM339 7 6 1 R417 10K R349 47.5K 0.5W R325 100K R414 10K N.C. R336 10K B D409 R353 680 JP300-1R308 10K +C308 1uF / 25V R317 10K + C308 10uF Q407 2N4401 R422 180 R411 47.5K R310 1.54K R335 1K + - IC303D TL074 12 13

21、14 D403 D401 D322 J301 A B C D E F JP400-1 R-HI REF OUT REF ADJ MODER-LOV- V+ SIGNAL U12 LM3915 1 2 4 9 8 7 6 5 10 11 12 13 14 15 16 17 18 3 R307 10K + - IC303A TL074 3 2 1 411 D428 + C404 10uF/50V D309 R324 240K R410 1.54K D422 JP400-2 D301 R401 680 R339 10K R303 10.0K R306 10K Q307 2N4401 R-HI REF

22、 OUT REF ADJ MODER-LOV- V+ SIGNAL U13 LM3915 1 2 4 9 8 7 6 5 10 11 12 13 14 15 16 17 18 3 Q309 2N4403 Q304 2N4401 F301 1.5A (fast) R344 680 D305 R314 10K B R403 10.0K R413 4.7K + - IC304A LM358 3 2 1 48 D404 Q306 2N4401 R331 10K R332 1K D327 1N4148 D410 N.C. R329 200K +C310 10uF R415 10K R400 11.8K D405 J4 D304 R309 10K R334 680 R300 40.2K D411 D318 R328 1K R408 10K +C301 1000uF R402 40.2K D414R427 680 R302 11.8K D439 D406 R316 470 D315 R333 10K Q406 2N4401 R312 820 D329 1N4148