Carvin_pb500_preamp 电路图 维修原理图.pdf

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1、LAST USED LIST C3 C2 C1 C4 C5 R3 R4R5 R1 R2 2 3 +1 2 3 +1 6 5 +7 6 5 +7 R6R7 R101 R9 R8 C6 Q1 Q2 R16 C12 R102 R18 R19 R20 R21 R17 S1 C13 C51 C14 J1 C7 A1.A A2.A A1.B A2.B R22 2 3 +1 C16 P2 C17R28 R25R26 R29 C18 C19 P3 P4 R30 C20 6 5 +7 2 3 +1 R37 R38 C23 2 3 +1 6 5 +7 A3.A R27 A8.A A3.B R100R34 R33

2、R32 R31 C21 C22 P6.B P5 A4.B A4.A R41 R39 R45 R48 Q4Q5 C45 C25 S2 R51 R52 6 5 +7 R50 A5.B C28 R54 R55 R56 R65 2 3 +1 6 5 +7 R40 A6.A A6.B 18K C30 2 3 +1 P7.A P7.B R59R62R63 R64 R60 R58 R57 R61 R68 R67R66 6 5 +7 P10 C56 C31 C50 A11.A A11.B C49 R103 R53 C29 6 5 +7 6 5 +7 R70 R69 R72 R74 + C39 C38 D10

3、A8.B A7.B R75 R76 C47 C32 2 3 +1 R77 R78 C33 C55 6 5 +7 P8 D1 C58 C34 R80 R107 R81 R83 R82 2 3 +1 6 5 +7 D3D2 R14 R15 C11 C10 R13 A9.A A9.B C15 R23 R11 A7.A C44 Q8 Q7 R79 C35 R84 R85 2 3 +1 C36 C57 C37 D5 P9.AP9.B A10.A D6D7D8 R87 R89 R90 R88 LED2 R91 A10.B LED1 R99 R105 R104 R97 R98 + C42 + C53 + C

4、52 + C41 + C40 R106 V+ LED3 R92R93R94R96 R95 5 1 4 U1 3 2 U1 7 6 U1 9 10 U1 11 12 U1 14 8 15 U1 G G E E V+ H2-6 H2-8 H2-7 12 3 J12 J4 J3 P1 cw 25K EFF RTN EFF SEND R71 R42 V+ H2-3 H2-4 H2-1 H1-7 H1-8 R35 P6.A H1-2 H1-1 H1-3 H1-4 H4-8 H4-1 H4-2 H4-7 H4-3 H4-4 H4-5 H2-2 H2-5 V+ A9.8 A10.8 V+ H3-5 V+ H

5、3-6 V+V H3-3 B GND H3-2 A GND 12 3 EFF1EFF2CH. FS36-XLR CH: VOL BOOST EFF1: EFF LOOP EFF2: GRAPHIC EQ (FOOTSWITCH) R10 R12 C9 C8 SYM A C D H J LED P Q R S C. MCEUEN HI 10 .068 .0033 1K 1M .22 10pF 39K 13K82K 82pF 3.9K3.9K .022 10K 2.2K 560 .22 56K 10 10K 56K 33K J175 J175 B B E E 1M 1M .01 .01 56K 2

6、7pF470K 22K 560pF 47K 10K .0033 BRIGHT 1M 10 1K 2.2K B .01 1M A100K 82pF 10 VOLUME V 10K 3.3K .033 cw B50K BASS 10K 33K 3.3K cw B50K TREBLE 330pF .0022 3.3K + B50K MID 47K 47K 1.5K C50K .022 C50K .022 4704.7K 1.5K cw cw MID FREQ 0.5 10K 10 BB 10K 560pF 10K 10K J175J175 C26C27 R46 R47 .01.01 1M 1M 10

7、K GG DEEP .047 33K 2 3 +1 A5.A BB 470 N/UN/U 6.8K 27pF N/U N/U H1-5 H1-6 2.7K 47K 47K 270 47K 10 R49 270 68 68 330pF 10K 4.7K 18K 680pF 10K B50K HI LEVEL 10270 0.10.1 C50K .022 1.5K cw cw 1.5K0.518K 18K C54 56pF 270 18K10K LOW HI CROSSOVER FREQ 1K POWER B B B B B B B BB 10 470/16 10 470/16 68 470/16

8、 68 470/16 10 470/16 56K 220K 330pF 10 10 3.3K N/U .22 180pF A100K cw 10K 10 10 9.1K BB SUSTAIN 10K .047 1K 2.2M 2.2K V+ V+ B B D4 1K .0022 .1 47/63 1K 300K C50KX2 cw 1K 39K 1K 10K D9C46 N/U V B B B V+ R86 15K B THRESHOLD B V 10K680680680 10K V+ FOOTSWITCH 10 4 10 8 107 1 OP3 MODELPWR XFMRPWR MOD 2.

9、 U1 IS: CD4049B. 1. ALL DIODES ARE TO BE 1N4003. NOTES: UNLESS OTHERWISE SPECIFIED. 3. B GROUND IS NOISY GND AND A GROUND IS LOW NOISE SIGNAL GND. ALL GROUNDS ARE A UNLESS OTHERWISE SPECIFIED. B R36 4.7K R24 22K 11 30-02091 Off PCBNot Assigned 43 2126 3 1 2 U AND A NEARBY VIA. 58 4 C24 10 R43 10K Q3

10、 J175 V R44 15K H3-1 C4810 H3-4 H4-6 EQ IN OUT BALANCED OUT BALANCED OUT Q6 2N5550 + HI OUT LOW OUT PRO BASS PRE-AMP PCB SCHEMATIC 80-02091 30-02091 80-1402815-50098 15-20071 PB500 PB200 PB1515-00428 80-02018 80-02154 H3-7H3-8 V PCB 30-02091 OUT V FULL RANGE C15 ON PCB OP2.B 1/2 OP1.B 1/2 OP3.B N/U

11、OP3.A N/U OP1.A 1/2 OP2.A 1/2 J5 LAST PCN: 349 1 FEB 90 J2 LOW N/U R73 100K 1155 INDUSTRIAL AVE. APPROVED: NO: DATE: DATE: PCB NO: ASSY. REV: REV: (619) 747-1710 FAX 747-9065 DRAWN BY: REVISED BY:DATE: ESCONDIDO, CA 92029 ARVINC PHONES N/U BI AMP 4. CAPACITOR C58 IS A SECONDARY OPERATION, SOLDERED TO R80 5. A11 IS A 5532 TYPE OP AMP. N/U FULL RANGE E John L. Murphy5OCT93 K 收音机爱好者资料库 Ra d i o Fa n s .CN