Carvin_s14028a 电路图 维修原理图.pdf

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1、V- C1 R1 + - 5 6 7 A1-B C2 R2 C5 R6 R8R11 C6 R14 R13 R18 R20 C9 C8 47uF R21 R24 R25 Q10 Q12 D3 C7 R17 R12 R15 R7 R16 R23D4 R29 Q9 Q11 R19 +15 VDC -15 VDC Q2 Q4 Q7 Q5 Q6 Q3 Z2 D1D2 R5 V+ R28 V- R51 + - 3 2 1 A1-A C52 R52 R55 C55 R56 R58R61 C56 R64 R63 R68 R70 C59 C58 47uF R71 R74 R75 Q60 Q62 D53 C57

2、R67 R62 R65 R57 R66 R73 D54 R79 R78 Q59 Q61 R69 -15 VDC Q52 Q54 Q57 Q55 Q56 Q53 Z52 D51D52/1N4745A V+ D37D39 D38 D40 C36 C37 B R42 R41 R45 C42 C43 D42D44 Q36 Q37 Z37 Z36 R44 C39 C40 B V+ V- R3 R10 R60 C51 10 10K 18K 82pF +15 VDC 10K 27pF 10K 2.7K560 47/63V TIP32 1K 1K 10K 39pF 1K 2.2K 2N5550 2N5400

3、2N5400 100V 1K 1K 5K 5W .0033 680 5W 150 150 THI5N20 THI5N20 150 150 5K 5W 2N5400 THI5N20 THI5N20 10K 100K 4700uF 80V 4700uF 80V 0.56 TIP32C IN4745A 47uF 63V470 2200uF 25V 2200uF 25V 470 47uF 63V TIP3IC 0.56 IN4745A 2.2K 10K 2.7K560 27pF 10K 2N5550 2N5400 1K 1K 1K 2.2K 2N5400 5K 5W .0033 680 5W 100V

4、 150 150 39pF THI5N20 THI5N20 150 150 5K 5W 2N5400 2N5400 2.2K Z1 THI5N20 THI5N20 10K TIP32 47/63V 1K 1K 10K 680 82pF 18K 10K 10 100K Z51 F3 120/240 VAC QC10 QC11 QC8 QC9 QC5 R9 7.5K R53 680 R59 P51 5K 7.5K 2N5400 MR502MR502 MR502 MR502 H1-7 QC 4 H1-1 H1-8 H1-2 QC14 QC15 Q51 J175 Q1 J175 CH 1 AUDIO

5、OUTPUT CH 1 CLIP OUTPUT CH 2 AUDIO INPUT CH 2 CLIP OUTPUT Q38 C46 NOTE 2 T1 T 0.1 R46 C45 1K .22 T1 POWER MODULE S. MC KENNA + - 5 6 7 A3-B R38 R37 R36 C35 D36 +15 VDC 1 MEG 1 MEG 10uF 100K P1 NOTES: UNLESS OTHERWISE SPECIFIED. MAC97 FAN QC 3 Z39 32V 50/60 HZ POWER SWITCH BRIDGE RECTIFIER D41D43 R4

6、5K R54 0.56 0.56 C48 .01 .01 10A 34.6V (300W 4) (300W 4) CH 1 OUT CH 2 OUT 120 240 2.0V 2.0V LAST USED LIST A C D H Q R 1 Z P T SYS.CH.1 1-35 36-50 & 86-100 38 50 & 8631 53 81 39 511 3 C11 180pF C12 56pF C62 56pF C61 180pF S4 HEATSINK (85 C CUTOUT). S4 IS A THERMAL CUTOUT SWITCH, LOCATED ON RED RED

7、YEL ORG ORG/ WHT BLK/WHT BLK YEL YEL GRN C53 330 C3 330 1. THERMISTOR MUST BE IN CONTACT WITH HEATSINK. 2. ALL CAPACITORS IN MICROFARADS (EXCEPT AS NOTED). 3. ALL DIODES ARE 1N4003 (EXCEPT AS NOTED). 4. A1 AND A2 ARE MC33078 OP AMPS. 6 6 7 8 8 + + + + + QC6 QC7 /1N4745A C13 82pF C63 82pF 9 9 6 ADDED

8、 AS SECONDARY OPERATIONS. UNIT WARM, 120 VAC LINE. 6313 CH 1 CH 2 9 C49 6 6 6 6 6 6 6 CH.2 51-85 -15 VDC +15 VDC 22 MAR 88 0.01 uF 80-14028A 34.6V 9 ADJUST P1/P51 FOR 75mA (25mA) IDLE CURRENT 5. A3 IS 4558 TYPE OP AMP. 1N4733A 1N4733A 1N4733A 1N4733A (5.1V) (5.1V) (5.1V) (5.1V) 6 5 7 + - 8 4 A2-B 2

9、3 1 + - 8 4 A2-A H1-3 H1-4 H1-5 +15 VDC GND -15 VDC + C47 3 49 44554 1 1262 PCB ASSEMBLY: 80-14028 (16V) (16V) 7 T1 IS: 15-40082 FOR PB400s & MX842s. R43 Z38 50V C44 QC12 220uF 2.2K 1/2W (47V) 1N4756A +48 VDC April 21, 1989 30-09008 B C. McEUEN 12340 WORLD TRADE DR. SAN DIEGO, CA 92128 (619) 487-1600 FAX 487-6629 REVISED BY: APPROVED: DRAWN BY: DATE: DATE: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C PB400 收音机爱好者资料库 Ra d i o Fa n s .CN