Crate_PA-4a_(07S481)_Schematics电路图.pdf

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1、JACK 1/4 LINE-OUT J2 JACK 1/4 LINE-IN J3 68K R3 3.3K R7 220pf 100V C5 6.8K R5 TP30.1 C3 .001 100V C7 1N914 D13 680 R1 J1 1 2 3 4 5 50V 1uF C6 0.1 C4 C25 50V 2.2uF 1/2W 220 R13 1N914 D12 4.7K R40 2N3402 Q1 C24 50V 2.2uF J15 .001 100V C8 1N3070 D2 1/2W 8.2K R38 1N3070 D1 1/2W 4.7K R15 1/2W 220 R11 1/2

2、W 220 R10 1/2W 4.7K R14 1/2W 220 R12 33K R43 TIP-32C Q4 VTL5C7 OPTO OC1 1/2W 10K R9 2N3055 Q10 1/2W 8.2K R37 UL .0033uF C11 22 R28 220 R27 R22 100 R25 TP1 18K R26 2.74K 1% R45 TP9 820 R29 220 R18 TIP31C Q9 G D S J112 Q12 22K R48 1/2W 10 R32 TLO72 IC1 2 3 1 8 4 R30 100K R23 2.74K 1% R44 MPSA56 Q3 TP2

3、 16V 220uF C2 1W 470 R42 JACK 1/4 J4 J6 MPSA06 Q2 J7 J8 J9 J10 J11 F1 J13 J12 J14 UL .0033uF C10 100V .22uF C20 J16 J17 J18 100V 0.01 C12 1N5392 D5 1N5392 D4 1N5392 D3 R34 35V 4700 C13 35V 4700 C14 1N5353 D7 AP1 18K R19 1N5353 D8 35V 100uF C15 50V 22uF C19 1N4745 D10 1N5392 D6 MJ15002 Q5 100 R16 100

4、pf 200V C1 1N914 D9 330 R4 220K R39 1/2W 10K R6 35V 10uF C23 100V .047uF C9 JACK 1/4 J5 R33 200V 100pf C22 35V 100uF C16 1N4745 D11 TLO72 IC1 6 5 7 8 4 1% 2.74K R47 820 R21 10K R2 22 R20 100V 560pF C26 MPSA06 Q13 7.5K R49 470 R8 1% 2.74K R46 1.8K R50 SERVICE PERSONNEL. DO NOT PERFORM AMY SERVICING B

5、EYOND TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED CAUTION: THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. 10 R51 100V .22uF C21 CLIP FC2 1W 470 R41 MPSA06 Q8 CLIP FC1 MPSA56 Q7 TP10 TP5 TP4 TP7 TP6 TP11 TP12 TP13 TP8 -15V -1

6、5V -15V -15V -VP -VP +V +V +V +15V +15V +VP -V -V O O TOUCHING INTERNAL PARTS. 4) CIRCUIT GROUND SWITCH GROUND CHASSIS GROUND AND 10 MEGOHM DIGITAL VOLTMETER. 3) VOLTAGES ARE MEASURED WITH 1MEGOHM OSCILLOSCOPE CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/

7、4W-5% TOL. AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER 1) CAUTION: SHOCK HAZARD! NOTES: REV 0_ 48102C0_ XFMR P/N 94-289-02 XFMR P/N 94-289-30 XFMR P/N 94-289-30 GND SIG -15V LGND FUSE =1A SB FUSE = 2A SB J14 J9 J8 J13 J15 J13 J14 J12 BRN/WHT B

8、RN/WHT EXPORT WIRING EXPORT WIRING GRAY 230V BLU BRN BLACK BLK WHT VOLTS AC RTN AC BRN WHT 100V BLUE AC AC RTN VOLTS GRAY 2A SB NONE 10/1/98 10W 10W 120 120 500 10W 10W .33 .33 ABCD FILE NAME: 4 3 2 1 EDCBA 3 2 1 4 E PLOT TIME: PLOT DATE: SCALE:SHEET: NO. DRAWING DRAWING NAME: PROJECT NAME: 11880 BO

9、RMAN DR. ST. LOUIS, MISSOURI 63146 DATE: ORIGINAL ISSUED: APPD: CHKD: DRAWN: SIGNATURES: +VP P P 07S481-02 PA4a BOX MIXER 10/1/98REM 1 OF 1 POWER AMP SCHEMATIC POLY POLY POLY SPEAKER OUT SPEAKER OUT 2mVDC ACROSS R22 & R30 .5Vrms INPUT AT NO SIGNAL, NO LOAD PIN 4 OF J1 1 KHZ SINEWAVE BIAS ADJUSTMENT: TEST POINT CONDITIONS: -16 +16 .45 -25.2 .45 25.2 9.5 5M 1.0 - 24.6 .925 24.6 1.15 24.1 1.2 - 24.1 2.76 -1.78 2.78 1.66 .5 .5 VDC 13 12 11 10 9 8 7 6 5 4 3 2 1 Vrms VOLTAGEVOLTAGE FORM WAVE POINT TEST RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库