Crate_gt1200h 电路图 维修原理图.pdf

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1、2007 LOUD Technologies Inc. All rights re served PWA Guitar Amplifi er PCB SchematicsPAGE 1 GT1200H DCBA 4 3 2 NOTES: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POW

2、ER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 1) CAUTION: SHOCK HAZARD! 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER. SERVICE PERSON

3、NEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. DCBA 1 FE 1 Signatures: Checked: Drawn: Sheet Class Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Released: REVDateDESCRIPTION E Tolerance: Plot Date: Plot

4、 Time: Thu Apr 17, 2003 A 8/08/02 1 - REM CHGD C36 FROM .1 TO .01UF B 4/18/03 INITIAL ISSUE REMR00987 C of Drawing Title: Drawing Number: NONE 2 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 7/16/02 11880 Borman Drive, St. Louis, MO 63146 Chgd ByAppvd by F GT65/120a 07S199-XX 2 PWA - GUITA

5、R AMP Date 4 3 9 * 5 4 3 8 7 6 2 1 TP C 30Vpp 9.8Vpp 5Vpp 7.2Vpp D -16V +16V I E REV RETURN - B +16V B C2 D +16V +40V T 4.8Vpp 9.8Vpp 18Vpp .48Vpp C9 .22 J14 R5 15K C3 .0068 100V R4 680K R90 10K R80 6.8K TP9 .22 C4 JOW3 J16 J7 C29 56 pF 200V R46 1K C32 2.2 6 5 7 IC3:B TLO-72 .015 C10 A R2 22K R11 2.

6、2K R87 10K .22 C54 50V -16V 1N914 D30 R47 4.7K R72 12K D4 1N746ARL 3.3V C58 56 pF 200V R88 470K S D G J112 Q21 47K R64 R109 4.7K G S D Q25 J175 TP3 R10 10K 4.7K R14 2.2 C61 G S D J175 Q29 R112 10K C2 R17 4.7K C15 2.2 CW 10K A P11 REVERB TP7 R113 1M 7 5 6 IC2:B TLO-72 1N914 D9 10K R30 C42 2.2 2.2K R9

7、9 JOW2 CW P4 10K A LOW +16V +40V C31 .1 50V 680K R52 R57 15K G S D Q7 J175 .015 C27 100V C19 .01 .001 100V C33 B2 R106 1M .22 C17 D1 1N914 6 5 7 TLO-72 IC5:B C1 .47 22 R93 CW 500 A P9 MID 1.5K R1 C5 .1 REV RETURN + C7 1 G S D J175 Q1 680 R9 1N914 D26 R92 10K C49 1 6 5 7 IC4:B TLO-72 Q6 2N5210 1N914

8、D6 R115 22K R26 22K R91 22K 0 R89 D10 1N914 R38 1K 1 C20 C13 .22 CW 500 A P13 MID CW HIGH P5 10K L TP8 2 3 1 TLO-72 IC3:A 10 C38 35V C18 .0056 100V 27K R48 1N914 D16 C24 2.2 4.7K R22 30Vpp30Vpp 8Vpp 5.2Vpp .18Vpp 6.2Vpp 5.2Vpp E REV SEND - A R .047 100V C55 1.5Vpp 5Vpp3Vpp 3.6Vpp 2.5Vpp 5.2Vpp .48Vp

9、p.48Vpp CONDITION A CONDITION B CONDITION C +40V .047 C8 100V 1N914 D2 J1 INPUT S D G Q26 J112 10K R94 J9 J6 C34 2.2 R59 47K C47 1 CW 10K A P8 LOW C52 .047 100V C56 100V .0015 CW P10 10K L HIGH C2 .0033 100V R12 10K R3 22K R7 22K D3 1N746ARL 3.3V C71 .0033 100V C6 10 35V TP1 R75 47K R116 22K C53 56

10、pF 200V B R77 47K0 R73 R34 47K 47K R28 4.7K R16 G S D Q3 J175 TP4 DISTORTION CHANNEL R68 1M R58 10K D15 1N914 3 2 1 IC4:A TLO-72 C68 .22 C23 1 C25 .47 R43 22K R45 4.7K TP5 R51 1M C30 .0047 100V R29 4.7K 100K R82 R6 6.8K R42 150K C46 2.2 R76 10K REV SEND + CW 100K RA P7 LEVEL CLEAN CHANNEL TP6 R18 1.

11、5K 2 3 1 IC1:A TLO-72 6 5 7 TLO-72 IC1:B 1M R8 S D G Q4 J112 2 3 1 IC2:A TLO-72 CW 10K A P6 OVERDRIVE LEVEL CW P1 10K L OVERDRIVE GAIN TP2 J2 G S DJ175 Q2 R21 47K 2N5210 Q8 CW SOLO GAIN 10K L P2 .01 C82 100V D20 1N914 R78 22K G DS Q24 J175 G S D J175 Q16 R56 2.2M R44 1.5K .01 C81 100V R41 2.2K CW 10

12、K L SHAPE P3 2_PWRAMP ASSY P/N 07-199-01 65WATT VERSION ASSY P/N 07-199-02 120 WATT VERSION 2 3 1 IC5:A TLO-72 CW P12 10K A SOLO LEVEL 收音机爱好者资料库 Ra d i o Fa n s .CN 2007 LOUD Technologies Inc. All rights re served PWA Guitar Amplifi er PCB SchematicsPAGE 2 GT1200H DCBA 4 3 2 NOTES: THIS SCHEMATIC IS

13、 PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 1) CAUTION: SHOCK HAZARD! 2) UNLESS NOTED, RESISTOR VALUES IN

14、 OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. DCBA 1 FE 1 Signatures: Checked: Drawn: Sheet Cl

15、ass Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Released: REVDateDESCRIPTION E Tolerance: Plot Date: Plot Time: Thu Apr 17, 2003 A 8/08/02 2 - REM CHGD C36 FROM .1 TO .01UF B 4/18/03 INITIAL ISSUE REMR00987 C of Drawing Title: Drawing Numbe

16、r: NONE 2 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 7/16/02 11880 Borman Drive, St. Louis, MO 63146 Chgd ByAppvd by F GT65/120a 07S199-XX 2 PWA - GUITAR AMP Date 4 3 14 13 11 TPAC 0V 0V 15 12 10 0V AB A C - S+ R -16V -10V 32Vpp 35Vpp +16V +10V -34V .048V 1.4V +16V -16V-16V -40V 2_PWRAM

17、P E +16V +16V +40V 100V BLK -40V +40V +40V -40V +16V S- T D27 1N914 Q17 MPS-A55 -10V 35Vpp .65Vpp 1N746ARL 3.3V D25 R74 1.5K R71 1M .01 C41 100V +16V 0V OR +10V -.67V 34V DC .048V 1N914 D36 .01 C37 100V +16V R102 33K R53 100K .01 C73 100V C R19 2.2K R70 22K JOW6 10 1/2W R62 TP10 J19 J17 230V 120V 24

18、0V J17 J20 J19 330 R40 J28 J26 J27 D14 1N914 +40V C76 .1 100V TP12 C21 1 +40V 3.3K R31 1/2W C78 .1 100V -40V Q15 TIP-147 D21 1N914 D13 1N914 TIP-142 Q11 4700 C70 -40V 4700 C67 R85 .47 5W 4.7 R20 +40V R95 270 5W .1 100V C66 R96 270 5W .1 100V C69 10 R97 1/2W .047 C59 100V C26 35V 47 100 35V C12 100 3

19、5V C14 -16V R55 33K R81 470 D22 1N914 2.2K R98 1M R54 10K R67 R15 47K C74 .047 100V R69 47 R49 680 220 C45 330 R100 R104 .1 5W R65 27K R13 1.5K R63 220 1/2W C77 .1 100V C39 1 C22 220 pF 100V 2N5088 Q9 C79 .1 100V 220 pF C43 100V GI752 200V PIV D12 Q23 TIP-147 TIP-142 Q5 .047 100V C28 + .047 100V C44

20、 4 1 2 3 4 5 6 7 8 9 10 11 J21 OVERDRIVE SWITCHING LOGIC 1.8Vpp RIPPLE B WHITE J22 J13 J8 OPT1 S+ C75 1 C65 1 D24 1N914 -16V D18 GRN CLEAN +10V +10V CLEAN SOLO 1.8Vpp RIPPLE 1.1Vpp MPS-A55 Q27 D37 1N914 R105 1M R103 33K C48 .1R27 2.2K C36 .01 D19 1N914 J25 J24 LINE R66 47 C35 220 pF 100V C51 220 EXP

21、ORT WIRING BLUE GRAY/WHT BROWN J23 J11 OPT3 OPT2 J13 J22 ICL1 3A R60 4702N5087 Q18 R36 220 R39 470 10 C57 35V .001 100V C11 C40 220 pF 100V R24 1.5K 1/2W D28 1N5353B 16V 1N5353B D29 16V ON 120W VERSIONS ONLY R83 .47 5W S- TO SPEAKERJ15 GI752 200V PIV D5 TP13 I CC OO I S2 CLEAN/OVERDRIVE R50 2.2K I C

22、C OO I S1 SOLO/OVERDRIVE B2 Q22 MPS-A13 MPS-A13 Q28 D8 RED SOLO MPS-A13 Q13 R86 2.2K J29 D7 YEL OVERDRIVE Q14 2N5087 2N5087 Q20 D23 1N914 MJE-340 Q19 J23 REPLACE WITH 0.2 OHM, 5W ON 65W VERSIONS ONLY 2 13 5 4 CT T1 R61 220 D17 1N914 R101 100 CW AP1 500 MPS-A06 Q12 TP11 .047 100V C16 TP14 TP15 4.7 R37 J5 R33 .47 5W R23 .47 5W TEST POINT CONDITIONS FOR POWER AMP: ISOLATED TABS PARK THE THREE DESIRED LINE VOLTAGE. CONNECT APPROPIATE 1kHz SINE WAVE INPUT INTO INSERT TIP, 4 OHM LOAD UNUSED LEADS ON J26, J27, & J28. XFMR LEAD TO J17 FOR GBPC602 D35 NEUTRAL 收音机爱好者资料库 Ra d i o Fa n s .CN