QSC-EX4000-pwr-sch维修电路原理图.pdf

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1、NOTES: UNLESS OTHERWISE SPECIFIED APPLICATION USED ONNEXT ASSY TOLERANCES ARE: DECIMALSANGLESDECIMALS DIMENSIONS PER ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. -+ O -+-+ .XX.XXX1/2.02.010 DEBURR EDGES .XXX R MAX AUDIO PRODUCTS, INC. D 1N4148 1N4735 A 5532 10K-4 18p 75K 47 A

2、 SPKR SIG +INPUT RN 909 BA U 901-B 3 5 6 8 4 7 +15 V -15 V DC GND REF GND C 914 R 940 R 942 C 916 C 915 R 941 U 901-A 2 1 R 991 D 953 D 952 GND GND PWR-ON 6.2 V AUDIO INPUT STAGE C 957 68 p HEAVY LINE SHOWS MAIN SIGNAL PATH AR 990R 993 A 470-1W 10K-2W R 992 R 988 47-16NP C 951 CLIP 10K-2W R 1000 470

3、-10V C 960 470-10V C 959 220-16NP C 952 R 994 10K-2W THERMAL C 943 47-35V C 944 47-35V 1N4004 2200 35V PTC-60C BH-100 D 937 C 945 R 1007 SCHEMATIC, AMPLIFIER CHANNEL, EX 4000-B 18 Vac1 J 904 J 903 D 938 D 942 D 941 D 947 +24 V +15 V -15 V -24 V 1N4004 -15 V REG -24 V UNREG C 954 100 25 V +24 V UNREG

4、 +15 V REG THERMAL RELAY DR GND -24 V 1 4 3 2 J 902 B 901 18 Vac2 7815U 9043 2 1 D 940 1N4746, 18V D 939 1N4746, 18V C 953 100 25 V 2200 35V C 946 7915U 905 32 1 CT3 XF PTC XF PTC 4 5 470-1W R 982 1N4004 D 936 1N4004 1N4004 1N4004 10-25V C 941 TO +15 V TO -15 V SPEAKER BUS 47K-1W R 923 TO +46 V RAIL

5、 MUTE THERMALLY CONNECTED TO Q 911 U 910 5K 5K VR 903 VR 902 +CURR LIM -CURR LIM D GS Q 901 .10 C 901 2.7-2W R 903 R 902 22 FP D GS R 90122 FP 15000-50V 2 PL Q 902 C 933 C 934 J 901 10 U 906+142 V RAIL MUR1510 D 901 +94 V RAIL D GS 2.7-2W MUR1510 15000-50V 2 PL 7 Q 903 Q 904 R 910 C 931 C 932 D 902

6、22 FP D GS R 90622 FP U 907 +46 V RAIL .10 C 902 15000-50V 2 PL .22-3W 6 PL 22-1W 2SA1302 6 PL .22-3W 6 PL 2SC3281 6PL IN5402 22-1W 4.7-1W 4.7-1W 2SA1306B 2SC3298B 15000-50V 2 PL .10 3.9-2W 15K A 1K-4 2.7K 5532 1N5402 2uH 10-2W 4 PL .10 1 2 3 4 5 6 7 8 +15 V -15 V A C D B U 902-A U 902-B C 956 R 995

7、C 955 RN 910 R1001 C 929 C 930 L 901 R 933 R 934 R 935 R 936 C 913 R 929 D 907 D 908 R 932 C 912 C 935 C 936 4 1 3 8 11 2 5 HEATSINK GROUND SPEAKER OUTPUT SPEAKER COMMON TRANSFORMER CENTER TAP SPEAKER BUS R 930R 926R 928R 925R 924 R 927 Q 933 Q 905Q 906Q 907Q 908Q 909Q 910 R 937 R 938R 939 Q 934 Q 9

8、11Q 912Q 913Q 914Q 915Q 916 R 954R 953R 951R 952R 950R 949R 955 +46 +94 +142 V SWITCHED BUS AUDIO OUTPUT STAGE -46 -94 -142 V SWITCHED BUS SWITCHING THRESHOLD REFERENCE 6 220p .0022 1N4004 D 904 .0033 C 961 1N4004 D 903 VR 901 100 BIAS 25 C R 931 .01 C 911 50 OHM BIAS NETWORK 4.7 FP 7.5V D 951 2.7-2

9、W D GS D GS MUR1510 .10 D 905 R 958C 917 Q 917 Q 918 22 FPR 959 R 96022 FP R 956 3K-2W U 908 SOURCE REF 7.5V D 965 C 924 470-10V 15000-50V 2 PL C 937 C 938 9 MUR1510 D 906 D GS D GS 15000-50V 2 PL Q 919 Q 920 C 939 C 940 12 C 921 470-10V R 962 3K-2W R 963 R 964 22 FP 22 FP U 909 -94 V RAIL -142 V RA

10、IL SOURCE REF .102.7-2W C 920R 961 1N4148 1N4735 D 955 D 954 6.2 V NOTES. 1. ALL RESISTORS 1/4-WATT, 5% UNLESS NOTED. 2. ALL CAPACITORS 100V UNLESS NOTED. TOLERANCE 20% FOR ELECTROLYTIC TYPES, 10% ON OTHER TYPES. PC-004001-00 PC-004002-00 PC-004003-00 PC-004004-00 DISPLAY PCB INPUT PCB AC PCB SPKR P

11、CB AMP CHANNEL 101-199201-2991-29 301-399401-49931-49 501-599601-69951-69 701-799801-89971-99 901-UP (SAME BOARD FOR CH 1, CH2) PCB NUMBER DESCRIPTION CH 1 PARTS CH 2 PARTS PARTS IN COMMON .0022 -46 V RAIL 3K-2W R 976 T 6 +15 V T15 -15 V T16 PROCESSING BUFFER 50C +O.5V 90C +8V THERM ADJUST, 0.5-8.5V

12、 THERMAL SENSING T 1 T 3 GROUND MUTING INPUT CAP. TIMING CAP. T 2 RELAY DRIVER T 4 ON-OFF MUTING DELAY RELAY MUTE -24V RUN +15V MUTING BUS RUN 0V MUTE +8V SHUTDOWN MUTING IC-000010-00 MUTE BUS T 5 T 7 THERMAL SENSE, 0-8V T 8 THERMAL BUS, 0-8V T 9 OP-AMP OUT - HF PROTECTSHUTDOWN DETECTORS TO MUTING D

13、C PROTECT SENSE T10 THERMAL LIMITING T11 IDLE -1.2V CLIP +3V PEAKS0-3Vac NORMAL AUDIO 4.5-6.5Vac CLIPPING PEAKSMUTE +4.5V LIMITING THRESHOLD +4.5V CLIP RECTIFIER-BUFFER HIGH FREQ DC RECTIFIER THERMAL T12 T13 T14 CLIP BUS OP-AMP OUT OPTOCELL T25 POSITIVE DRIVER, +0.6V IDLE T24 NEGATIVE DRIVER, -0.6V

14、IDLE T23 POSITIVE BYPASS, +7.5V NORMAL, +2.5V SHORT POSITIVE BIAS CONTROLLER T22 POSITIVE CURRENT FEEDBACK +3V PEAK T21 POS CURRENT TRIMMER T20 OUTPUT VOLTAGE FEEDBACK LOAD IMPEDANCE SENSING T19 NEGATIVE TRIMMER BIAS ENABLE NEGATIVE BIAS CONTROLLER T18 NEGATIVE CURRENT FEEDBACK, -3V PEAK T17 NEGATIV

15、E BYPASS, -7.5V NORMAL, -2.5V SHORT T7 T8 GATE SOURCE REF GATE DRIVER SCHMIDTT COMPARATOR LOSS-OF-SAT SHUTDOWN T9 HIGH RAIL IC-000008-00 T4 SLEWNEG SUPP T6 BOOTSTRAP CAP T1 REF VOLT T2 LOW RAIL T3 SHUTDOWN T5 T7 T8 GATE SOURCE REF GATE DRIVER SCHMIDTT COMPARATOR LOSS-OF-SAT SHUTDOWN T9 HIGH RAIL IC-

16、000008-00 T4 SLEWNEG SUPP T6 BOOTSTRAP CAP T1 REF VOLT T2 LOW RAIL T3 SHUTDOWN T5 T6 T7 GATE GATE DRIVER LOSS-OF-SAT SHUTDOWN IC-000009-00 T5 GATE PWR T4 SLEW T3 SHUTDOWN T2 LOW RAIL T1 REF VOLT SOURCE REF SCHMIDTT COMPARATOR T6 T7 GATE GATE DRIVER LOSS-OF-SAT SHUTDOWN IC-000009-00 T5 GATE PWR T4 SL

17、EW T3 SHUTDOWN T2 LOW RAIL T1 REF VOLT SOURCE REF SCHMIDTT COMPARATOR SCHEDULE OF TEST POINTSJ 905-1THRUJ 905-8 J 905-8 SWITCHED NEG AMPLIFIER RAIL-HIGH VOLTAGE J 905-6 SWITCHED POS AMPLIFIER RAIL-HIGH VOLTAGE J 905-8 4. R 1007 IS POSITIVE TEMPERATURE COEFFICIENT RESISTOR MOUNTED TO HEAT SINK. 125 W

18、, 60 V MINIMUM, ON-RESISTANCE 0.030 OHMS MAX. 6. ZENERS D 951, 965 MARKED 7.5 V TESTED FOR LOW LEAKAGE, QSC P/N QD-0007.5-ZT. 7. ZENERS D 952, 955, 6.2V-500mW, TESTED FOR LOW LEAKAGE, QSC P/N QD-000024-QD. 8. PARTS MARKED WITH TRIANGLE MUST BE REPLACED WITH EXACT TYPE ONLY. 9. PARTS ENCLOSED WITHIN

19、DOTTED OUTLINE HAVE VOLTAGES GREATER THAN 42V. 3. BRIDGE RECTIFIER B 901, 1.5A, 100V. 5. Q 901-904, 917-920 ARE SWITCHING FETS. QSC P/N QD-000013-QD OR QD-000031-QD. SCHEMATIC, AMPLIFIER CHANNEL, EX 4000-B +CURR LIM -CURR LIM BIAS J 905-1 J 905-2 J 905-4 J 905-3 J 905-4 AMPLIFIER LOOP OPAMP OUTPUT J

20、 905-3 SWITCHING THRESHOLD REFERENCE VOLTAGE J 905-2 POSITIVE LIMITING VOLTAGE J 905-1 NEGATIVE LIMITING VOLTAGE PC-004200-00 6.8K412 30.0K-.5W .15 RESISTANCE 100 OHM COLD, RISING AT 55 C. QSC P/N RE-000006-PTPART NUMBERING SCHEDULE FOR PCBS USED IN EX-4000: C 903 47-50V R 911 22K-1W C 904 47-50V R

21、917 22K-1W R 989 TO +15V R 987 590 VTL 5C4 U 903 A 7 9 14 13 12 5 6 1 3 4 2 10 8 11 27K R 996 60.4K 330K C 962 10 pF 750K 750K 1K 1K 332 332 1N4148 R 947 R 943 R 944 R 948 R 945 R 946 1N4148 D 921 D 923 D 922 D 924 .0022uF 200V J 905-6 R 1002 10. Q 933 AND Q 934 MUST BE INSULATED FROM THIER HEATSINK

22、 (WHICH ARE CONNECTED TO GROUND). 47 C 963 SH-0040000-00 1 SH-004000-00 NONE SCHEMATIC EX 4000B AMPLIFIER CHANNEL EX 4000B LG. 200 V 200 V 1N5956B 1N5956B SGM SG MORALES 11-01-91 6-22-94 U U SH4000U1.FCDSH4000T1.FCD R 904 REV U, 2-15-95, FOR PC-004200-00 REV K WP-004202-00 WP-004202-01SVC CH MOD Rad

23、ioFans.CN 收音机爱 好者资料库 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS , THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS. REVISIONS ZONEREV DESCRIPTION DATE APPROVED SIZE FSCM NO.DWG NO.REV SHEET SCALE COS

24、TA MESA, CALIFORNIA FINISH MATERIAL CONTRACT NO. APPROVALS DRAWN CHECKED ISSUED DO NOT SCALE DRAWING PARTS LIST DATE CAD FILE NO. APPLICATION USED ONNEXT ASSY NOTES: UNLESS OTHERWISE SPECIFIED TOLERANCES ARE: DECIMALS ANGLESDECIMALS DIMENSIONS PER ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSION

25、S ARE IN INCHES. -+ O -+-+ .XX.XXX1/2.02.010 DEBURR EDGES .XXX R MAX XX C AUDIO PRODUCTS, INC. 1234 1234 D C A B D C A B CAD SEED FILE NO. TAB BLOCK DASH NO.DESCRIPTION -00CHAN 1 & 2 -01 -02 CHAN 1 CHAN 2 USED ON MPA750, EX 2500 MPA750, EX 2500 MPA1100, MPX1200, EX 4000 SCHEMATIC, BRIDGE RECTIFIER P

26、CB SH-000040-XXA 1 OF 1 Warren R.5-13-94 NONESH0040A1.FCD APROD RELEASE PER ECO 2297 WR RadioFans.CN 收音机爱 好者资料库 CH 1 +IN J 31 CH 1 -IN GND CH 2 -IN CH 2 +IN J 32 GND GND CH 1 SPKR SIG GND GND -24 V +24 V -15 V REG +15 V REG GND GND CH 1 MUTE CH 2 MUTE CH 1 PWR-ON CH 2 PWR-ON CH 1 CLIP-LIM CH 2 CLIP-

27、LIM 1. ALL RESISTORS 1/4W, 5%. 2. ALL CAPACITORS 100V 3. J 32, 26-PIN CONNECTOR, TO J 1 ON FRONT DISPLAY BOARD PC-004001-00. 4. PARTS FOR CH 1 NUMBERED 301-399. 5. PARTS FOR CH 2 NUMBERED 401-499. 6. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 31-49. 8. PARTS WITHIN DOTTED OUTLINE FOR USER MODIFICATIO

28、N. SEE MANUAL. SCHEMATIC, EX-SERIES STANDARD INPUT BOARD. 7. BOARD SHIPPED WITH W 301-304, W 401-404 MOUNTED AS SHOWN. 470 p470 p W 303 W 304 SHIPPED XLR PIN 2 HI MOVE W 303, 304 TO ALT POSITION FOR PIN 3 HI 470 p470 pSHIPPED XLR PIN 2 HI MOVE W 303, 304 TO ALT POSITION FOR PIN 3 HI C 402C 401 W 403

29、 W 404 SW 31 INPUTS PARALLEL MONO-BRIDGE W 401 PIN 1 V+A PIN 2 SP-A PIN 3 GND PIN 8 GND PIN 4 +1N A PIN 5 +OUT A PIN 6 -IN A PIN 7 -OUT A PIN 9 CLIP KEY PIN 10 V-A PIN 11 V- B PIN 12 CLIP B PIN 13 GND PIN 14 -0UT B PIN 15 -IN B PIN 16 +OUT B PIN 17 +IN B PIN 18 GND PIN 19 SP-B PIN 20 V+B PIN 21 SPAR

30、E PIN 22 SPARE W 301 T 301 3 (4) 1 (1)4 (5) 6 (8) T 401 1 (1) 3 (4)6 (8) 4 (5) W 402 A NC R 301 C 303 C 403 R 401 NC A CH 1 THERMAL CH 2 THERMAL CH 1 AC RELAY CH 2 AC RELAY CH 2 SPKR SIG PADS FOR LEVEL 1-A OR 2-A ACCESSORY PCB W 305 W 306 W 406 W 405 A 3-POS XLR 2 3 1 A J 301 A XLR 2 3 1 A J 401 J 3

31、3 A (6, 7) A (6, 7) W 302 R 31 R 32 24K 220p C 31 -INPUT CH 1 +INPUT CH 1 -INPUT CH 2 +INPUT CH 2 4. NO CHANGE IN PINOUT OF J32, PINS 1-26 20.0 K CENTER STEREO NOTES, ALL REV LEVELS NOTES, REV LEVELS A-B 1. THE FIRST YEAR OF PRODUCTION EX AMPLIFIERS SHIPPED WITH PC-004002-00 REV A OR B C 302C 301 2.

32、 FOR PC-004005-00 REV A, ADDED PADS 1-20 FOR LEVEL 1-A, 2-A INPUT ACCESSORY PCB 5. SW-31 WAS REVISED ON PC-004005-00 REV A, BUT WILL NOT AFFECT FUNCTION OF UPPER SLOT PCB. 3. ADDED J33, 5-PIN INPUT EXTENDER HEADER AND W305,306,405 & 406. 11 16 4 6 1 2 22 12 10 9 21 3 5 15 18 17 20 19 24 23 26 25 THI

33、S DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS , THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS. REVISIONS ZONEREV DESCRIPTION DATE APPROVED SIZE FSCM NO.DWG NO.REV SHEET SCALE COSTA MESA, CALIFORNIA FINI

34、SH MATERIAL CONTRACT NO. APPROVALS DRAWN CHECKED ISSUED DO NOT SCALE DRAWING PARTS LIST DATE CAD FILE NO. APPLICATION USED ONNEXT ASSY NOTES: UNLESS OTHERWISE SPECIFIED TOLERANCES ARE: DECIMALS ANGLESDECIMALS DIMENSIONS PER ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. -+ O -+

35、-+ .XX.XXX DEBURR EDGES .XXX R MAX C AUDIO PRODUCTS, INC. 1234 1234 D C A B D C A B CAD SEED FILE NO. A B PROD REL PER ECO 756 CHANGE VALUE R31, WAS 21 K CREVISED FOR MIN-SLOT, BR-SW SEE ECO 1097 D SEE ECO 1297 BY PHQ REVISE PER ECO 1916 1-24-92 SGM SGM 6-10-91 SCHEMATIC DIAGRAM EX SERIES STANDARD,

36、INPUT BOARD SH-004002-00D 1 OF 1SH4002D1.FCDNONE 6-18-90 SH40002C1.FCD PC-004005-00EX/MPA SERIES 13 14 7 8 LG. FOR PC-004005-00 REV B 7-15-93 PAT QUILTER RadioFans.CN 收音机爱 好者资料库 PC TERMS 50 51 505 502 503 56 55 52 504 FUSE 501 R 501 506 507 .068 250 VAC C 501 53 AC LO 57 SCHEMATIC FOR PC-004003-00 R

37、EV B SWITCHED AC 54 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS , THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS. REVISIONS ZONEREV DESCRIPTION DATE APPROVED SIZE FSCM NO.DWG NO.REV SHEET SCALE COST

38、A MESA, CALIFORNIA FINISH MATERIAL CONTRACT NO. APPROVALS DRAWN CHECKED ISSUED DO NOT SCALE DRAWING PARTS LIST DATE CAD FILE NO. APPLICATION USED ONNEXT ASSY NOTES: UNLESS OTHERWISE SPECIFIED TOLERANCES ARE: DECIMALS ANGLESDECIMALS DIMENSIONS PER ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSIONS

39、 ARE IN INCHES. -+ O -+-+ .XX.XXX DEBURR EDGES .XXX R MAX C AUDIO PRODUCTS, INC. 1234 1234 D C A B D C A B CAD SEED FILE NO. SCHEMATIC, AC PCB EX/MXa 3 SP PC-004003-00EX 3 SP LEORA5-10-93 A NONE1 OF 1 SH-004005-00 1.THIS DRAWING USED IN CONJUNCTION WITH SCHEMATIC DIAGRAMS : SH-004000-00, SH-004001-0

40、0, SH-004002-00, SH-004003-00, SH-004004-00, SH-004006-00, SH-002500-00, SH-002010-00, AND SH-002011-00 SEE FUSE .068 250 VAC 601 R 601 606 607 604 605 602 603 C 601 SWITCHED AC SEE 60 R 50 R 50R 501 / R 601 508 F501 509 58 59 F601 FUSE TABULATION BLOCK 470 15W 330 15W 330 15W 2.5 OHM 15A 1.0 OHM CO

41、LD 30A 1.0 OHM COLD 30A 12A 250V MX 2000a (100V) MX 2000a (120V) MX 2000a (230V) 2.5 OHM 15A 1.0 OHM COLD 30A 1.0 OHM COLD 30A20A 250V 20A 250V 12A 250V EX 2500 (100V) EX 2500 (120V) EX 2500 (230V) 1.0 OHM COLD 30A 1.0 OHM COLD 30A20A 250V 20A 250V EX 4000 (100V) EX 4000 (120V) MODEL (V) LG. PROD RE

42、LEASE PER ECO 1846 TAB BLK SEE TAB BLK SEE TAB BLK TAB BLK SEE TAB BLK B 5-18-93SGM SGM5-17-93 5-18-93SG MORALES 15A 250V 15A 250V REVISED PER ECO 2201 (EFF 8-5-94)SGM6-15-94 C C SH4005C1.FCDSH4005B1.FCD REV PER ECO 2699 (EFF. 8-18-95) RadioFans.CN 收音机爱 好者资料库 SIG. GND + INPUT - INPUT 1K THERM BUS, 0

43、-8V PWR-ON, 0-15V 10uF + 2N4410 PWR GND SPKR SIGNAL, 5V PK CLIP-LIM BUS, 0-4V MUTE BUS, 0-8V 5532 10K 100p 100p 1.5K REG. -15V SIG. GND SIG. GND + INPUT - INPUT THERM BUS, 0-8V PWR-ON, 0-15V SPKR SIGNAL, 5V PK CLIP-LIM BUS, 0-4V MUTE BUS, 0-8V SIG. GND PWR GND C101 RN101 10K D(C) 10K B 10K C(D) 10K

44、A C102 R102 U101 B 4 8 5 6 7 1 2 3 5 VR101 11 23 19 15 21 17 Q103 R112 C108 4 6 7 8 24 19 16 18 14 GAIN CH 2 PINS NOTES 1. ALL RESISTORS 1/4 WATT UNLESS SPECIFIED. 2. ALL CAPACITORS 25V UNLESS SPECIFIED. 3. CH 2 RESISTOR NETWORK SECTIONS ( ) WHEN DIFFERENT. 4. CH 1 COMPONENTS NUMBERED 101-199 5. CH

45、2 COMPONENTS NUMBERED 201-299. 6. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 1-99. 7. U102, 202 ROHM BA6124 OR SAMSUNG KA2284/85 13 GRN 1K-D RN103 LD105 PWR ON BA6124 100 YELYEL 10uF 330K R105 LD103 U102 C105 R107 536 R108 LEVEL -30 -10 LD104 10K R106 10uF C106 3.9K R109 RN 104 1K-C -24V +24V AC RELA

46、Y 2 AC RELAY 1 REG. +15V 25 26 10 9 12 J 1 26-PINS SCHEMATIC, EX-SERIES DISPLAY BOARD. 8. LD 101, 102, HIGH-EFFICIENCY RED LED. 9. LD 103, 104, HIGH-EFFICIENCY YELLOW LED. 10. LD 105, HIGH-EFFICIENCY GREEN LED. 22 PC-004001-00, REV A. EX-SERIES DISPLAY BOARD SCHEMATIC DIAGRAM 1 OF 1 PAT QUILTER 6-19

47、-90 A PROD REL PER ECO 756 1K-D R113 634 B REVISED PER ECO 1603 WR 6-19-90 SH-004001-00 1 B SH-004001-00 B FCAD: 004001SHSH4001B1.FDC 9-29-92 10uf 10uf + + 4.7uf NP 5532 1K536 A R110 R103R104 C2 C1 C107 U101 A 1 2 3 PWR GND PWR GND SPKR SIGNAL, 5V PK CLIP-LIM BUS, 0-4V RED 100 MPS2907 .0033 1N4004 2

48、N 4410 14 12 9 RN102 10K-D(A) 10K-C(B) 10K-B(C) 10K-A(D) Q102 Q101 D101 R101 LD101 RN103 1K-C 1K-B 1K-A 5 6 MUTE BUS, 0-8V C103 + 470 10V C104 RED LD102 LIM-CLIP 1.5K R111 1K-B 1K-A C 109 10uF Q 104 2N 4410 4.7K THERM BUS 0-8V TO AMP +INPUT TO AMP -INPUT Vcc SENSE R SIG. GND 13 10 11 3 7 8 -15V REG +24V UNREG -24V UNREG 2 1 4 J101, 201 14-PINS +15V REG TEMP-PROT RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库