Ampeg_SJ-12R_(07S277-12)_Schematic电路图.pdf

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1、JACK T/S J2 JACK T/S J1 47K R1 47K R2 1M R3 9-PIN TUBE_SOCKET J3 1 2 3 4 5 9 9-PIN TUBE_SOCKET J3 6 7 8 4 5 9 100V 470pF NPO C24 50KLTRIM AP1 1M AUDIO SINGLE P1 1M AUDIO SINGLE P4 1/2W 221K 1% R8 1/2W 475 1% R13 22 R29 1/2W 2.74K 1% R4 400V .022uF MTLPOLY C6 50V 22uF ELEC. C25 400V .022uF MTLPOLY C8

2、 50K AUDIO SINGLE P3 100V .22uF POLY C5 200V 100pF NPO C27 AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE AND 10 MEGOHM DIGITAL VOLTMETER. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE CAPACITOR VALUES IN MIRCOFARADS, 50V-10% TOL. 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. TOUCHING

3、INTERNAL PARTS. 1) THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER NOTES: 9-PIN TUBE_SOCKET J4 1 2 3 4 5 9 1/2W 1M 1% R12 1/2W 1M 1% R11 9-PIN TUBE_SOCKET J4 6 7 8 4 5 9 1/2W 22.1K 1% R14 100K R33 400V .022uF MTLPOLY C9 400V .1uF MTLPOLY C10 1/2W 100K 1% R15 1/2W 100K 1% R16 4.7K R30 1M R28 (

4、8=+V, 4=-V) TL072 IC1 7 6 5 (8=+V,4=-V) TL072 IC1 1 2 3 47K R31 1/2W 100K 1% R5 TAB J28 2W 10K 5% R26 500V 470pF DISC C32 TAB J11 500V 470pF DISC C3 TAB J13 TAB J12 450V 10uF ELEC. C23 8_PIN RIBBON RC2A 1 2 3 4 5 6 7 8 400V .022uF MTLPOLY C11 400V .022uF MTLPOLY C12 1/2W 221K 1% R17 1/2W 221K 1% R18

5、 2N5087 Q6 50V .1uF X7R C30 GNDLUG J26 63V 47uF ELEC. C31 2.2K R32 50V .22uF X7R C26 100V/0.1A 1N914 DIODE D18 50V .1uF X7R C28 10K AUDIO SINGLE P5 1/2W 22.1K 1% R19 1/2W 22.1K 1% R205W 470 10% R23 TUBE_SOCKET 8_PIN J5 1 2 3 4 5 7 8 6 TAB J7 450V 10uF ELEC. C22 450V 47uF ELEC. C21 G D S J112 Q4 2W 1

6、0K 5% R25 100V/0.1A 1N914 DIODE D8 100 450V C20 1N4007 D4 D3 D1 D2 TAB J15 TAB J14 156 HEADER J25 1 2 3 TAB J18 TAB J16 TAB J27 TAB J17 GNDLUG J23 CLIP FC3 HEADER J24 1 2 3 4 5 T1A,250V FUSE F1 CLIP FC1 UL .0033uF DISC C14 TAB J10 TAB J22 TAB J21 UL .0033uF DISC C15 CLIP FC4 TAB J19 CLIP FC2 100V/0.

7、1A 1N914 DIODE D6 100V/0.1A 1N914 DIODE D7 100V/0.1A 1N914 DIODE D5 16V 220uF ELEC. C16 63V 47uF ELEC. C29 16V 220uF ELEC. C19 16V 220uF ELEC. C17 8_PIN RIBBON RC1A 1 2 3 4 5 6 7 8 TAB J8 TAB J9 TUBE_SOCKET 8_PIN J6 1 2 3 4 5 7 8 6 8_PIN RIBBON RC1 1 2 3 4 5 6 7 8 100V/0.1A 1N914 DIODE D10 8_PIN RIB

8、BON RC2 1 2 3 4 5 6 7 8 156 HEADER J20 1 2 3 500V 470pF DISC C7 12_PIN RIBBON RC3 1 2 3 4 5 6 7 8 9 10 11 12 400V .0022uF MTLPOLY C2 G D S J112 Q1 50V .68uF LOW_LEAKAGE C1 1/2W 475K 1% R34 100V/0.1A 1N914 DIODE D9 100V/0.1A 1N914 DIODE D11 250K LINEAR SINGLE P2 12_PIN RIBBON RC3A 1 2 3 4 5 6 7 8 9 1

9、0 11 12 470 R9 15K R45 5W 470 10% R22 1/2W 4.75K 1% R7 HEADER J29 1 2 3 4 5 6 4.7K R44 100V/0.1A 1N914 DIODE D12 16V 220uF ELEC. C18 1N914 DIODE D13 1N914 DIODE D14 15K R38 4.7K R39 2N5087 Q2 22K R35 1/2W 681 1% R37 100K R36 G D S J112 Q3 DESCRIPTIONBYDATEREVCHKD C32_PER_E960472,CHG_PER_E970083. OKR

10、EM04/23/98 REV_TO_MATCH_PICT_PER_E970101.OKREM3/5/97 R24_WAS_WIRE_WOUND 8-1-96OKRLB 3 2 1 1/2W 33.2K 1% R6 100V/0.1A 1N914 DIODE D15 T/R/S JACK J31 15K R46 100V/0.1A 1N914 DIODE D17 100V/0.1A 1N914 DIODE D16 HEADER J30 1 2 3 4 5 6 1/2W 681 1% R43 100V .022uF POLY C4 2N5087 Q5 100K R42 100K R21 100K

11、R40 100K R41 63V 47uF ELEC. C13 100K R10 SERVICE PERSONNEL. DO NOT PERFORM AMY SERVICING BEYOND 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. REV. 6 5 4 3 2 1 6 5 4 3 2 1

12、 ABCDEFGH HGFEDCBA FILE NAME: PLOT DATE: SCALE:SHEET: NO. DRAWING DRAWING NAME: PROJECT NAME: 11880 BORMAN DR. ST. LOUIS, MISSOURI 63146 DATE: ORIGINAL ISSUED: APPD: CHKD: DRAWN: SIGNATURES: OK REM11/2/95 11/2/95 11/2/95 11/2/95 8-1-96 SJ-12R_GUITAR_AMP SCHEMATIC 3_07S277-12 1_OF_1NONE 27712C3_ OK 2

13、W 150K 5% R27 5W 470 10% R24 REVERB REVERB F1 F1 F1 F1 F1 F1 F1 F1 F2 F2 F2 F2 F2 F2 F2 F2 +V1 +V1 +V +V +V +V -15V -15V -V1 -V1 BOOST BOOST -V -V -V -15V2 -15V2 BOOST1 BOOST1 BOOST1 +V2 +V2 ARE REVERSED WHERE PINS 1 & 2 97-270-40 PREP U EXPORTS USE 94-270-40 RADIALS E980022. LIGHT POWER T1 S1 POWER

14、 POWER LINE CURRENT DRAW BETWEEN .65-.70A. NOTCH FULL OUTPUT. ADJUST BIAS FOR SLIGHT CROSSOVER 79-201-02 REVERB PAN +400V +400V BIAS ADJUST NOTE: BIAS ADJUST TO RC3A-10 TO RC3A-11 TO RC3-11 TO RC3-10 CW CW CW CW CW REVERB PART # V4 V3 V2 V2 V1 V1 R46C32 D18 -38V, TYPICAL Q6 NOT USED BOOST REVERB BIA

15、S J30 VOLUME MID BASS TREBLE P5FC4 LAST DESIGNATOR USED pwr supply to ouput xfmr red to output xfmr brown to output xfmrblue reverb returnreverb send GUITAR ACCORDIAN 17.5VAC 0VDC BLK REV. LOADED WITH 150 OHM RESISTOR 5VACp-p ALL CONTOLS 5, BOOST ON. GRN TO J8 8 OHM SPEAKER REVERB OFF REVERB ON 100-

16、120V:T2A,250V 230V: 0VDC -7VDC +7VDC BOOST OFF BOOST OFF -15VDC -15VDC -15VDC 0VDC 0VDC 0VDC BOOST ON BOOST ON 5Vp-p 400VDC ripple ripple .25Vp-p 395VDC 24.3VAC 218VDC 25.3VAC 224VDC 0VAC 356VDC 1VAC 0VDC 0VAC 343VDC ALL AC VOLTAGES (VAC) ARE RMS. 3.8VAC 190VDC 2VAC 240VDC DC VOLTAGES ARE WITH NO SIGNAL APPLIED. TESTPOINT NOTE: 50mVrms SINE WAVE 1KHZ T2 BRN BLUE RED P/N OUTPUT XFMR T0 J7 TO J9 OXIDE METAL PER ECO 960276 RadioFans.CN 收音机爱 好者资料库