Carvin_8077501_revl2 电路图 维修原理图.pdf

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1、40dB RISE FROM 1K TO 10K MIDS OFF - BASS TREBLE FULL 2. ALL CAPACITORS IN MICROFARADS, EXCEPT AS NOTED. 3. ALL DIODES ARE TYPE 1N4003, EXCEPT AS NOTED. 4. ALL OPEN GROUNDS ARE A ,EXEPT AS NOTED. 1. ALL RESISTORS ARE 1/4W, EXCEPT AS NOTED. 9.5dB 10K 2.2K IN SERIES WITH .01 FEEDBACK 26dB RISE FROM 1K

2、TO 10K ALL TONE FULL SQUARE WAVE OSCILLATOR AT SPKR OUT NOTES UNLESS OTHERWISE SPECIFIED. 5. ADDED AS SECONDARY OPERATION. BIAS SETS OK FOR POWER TUBES BUT NO AMP FEEDBACK - EXTREME GAIN SELECT SWITCH DOES NOT WORK- C34 STOPS OSCILLATION ON TOP WAVE WITH SPKR DRIVE STARTS TO CLIP ALL TUBE GUITAR AMP

3、 NO VOLTAGE ON RELAY ALL TONE FULL: 26dB OUTPUT TRANSFORMER PIN 1&2 REVERSED DC FILIMENTS FOR CH1 HI FREQ RISE -14.2dB 100Hz ACROSS STANDBY INSPECTION FOR PIN 1 REVERSED -15dB 100 Hz SOLDER BRIDGE SOLDER BRIDGE SOLDER BRIDGE GAIN / OUTPUT CH1 - VOL 2 3A SLOW BLOW REVERB DRIVE CH1 PRESENCE H3B- 1 TO

4、4 REVERB REC. FOOTSWITCH CLOSED=CH2 5mm x 20mm H3A-1 TO 4 (VOL1 2) ALL CENTER CHANNEL 2 CHANNEL 1 IMPEDANCE C. McEUEN .047/600V +3V RELAY+3V RELAY STAND BY VOLUME 1 VOLUME 2 LINE OUT BIAS ADJ PRESENCE 1 OPEN=CH1 FUNCTION ALL FULL ALL FULL CABINET CHANNEL 350 VAC 350 VAC PROBLEM H2B-1&2 H2A-1&2 H2B-1

5、&2 SPEAKER 5A500K 25A25K 25A25K RETURN 47/63V VOICED SWITCH 2FEB941N40071N4007 1N4007 1N4007 2200F 2200F 1N4745 2200F 4.6VAC 3.2VAC 3.2VAC OUTPUT REVERB 250pF 560PF .0022 120PF B100K 180PF DRIVE .0047 N/U POWER H1B.A H1B.C V6-V9 H1B.B H8B-1 H8B-2 .0047 B1MEG H1A.C H1A.A H1A.B H2A-1 H2A-2 H2B-1 H2B-2

6、 H8A-1H8A-2 B100K B1MEG B1MEG H1A.G H1B.H H1B.E H1B.G H1A.E H1A.H H1B.FH1A.F LOAD. INPUTFREQ. B100K V1.B V2.A V1.A V2.B 400V 400V 400V 400V V3.A 220K .0033 .022 10K 100K 220K 1.5K 150K .001 .033 100K 220K 1.5K V3.B400V 400V 400V V5.B V5.A SEND 1.5K 220K .001 100K 100K .047 560 4.7K2.2K350 100K .047

7、.047 220K 220K 56K 56K 56K 56K 350 350 350 350 BASS TREB BASS TREB SPK1 SPK2 400V RING .047 QC31 QC33 QC6 .047 470K 100K A25K 1.5K 2.2K B100K QC5 H6-1H6-2 QC32 .0047 220K 120PF 5.9A 5.9A L1.B L1.AL2.A L2.B GND 100K .047/600V QC14 GND 280V Y/RD TONE 20mV .3mV 18mV 20mV 18mV 190V 300V 300V 190V 190V .

8、0022 .01 .01 220K 220K R10 R13 R11 R14 R15 R71 C72 C13 C14 C17 C20 C21 C22 C70 C18 C12 R35 R12 R16 47K 47K .01 R18 R66 R72 R62 R30 R32 R38 R36 R31R33 C33 R28 R29 R70 R34 R37 R60 R61 R64 R65 R63 C71 C38 C35 C37 C36 R42R43R41 R67 22K 22K 10K 10W YEL GRN C45 MID MID 4/5 RED C16 RED BRN BLU C11 R73 22K

9、TIP C25 CH1 CH2 C10 QT8 QC7 P11 20K YEL GRN P21 1/2 2/2 D12 D13D14 D15D16 C47 R26 BLK B/W ORG O/W QT9 GRN GRN BLKBLK 4,5 C19 C39 R40 C34 C46 R39 10K GND R49 C48 9dB 10K RED CH1 CH2 CH2 8mV CH1 P10 P1 .047 R8 D5 D1D2 R1 R9 R5 P5 P7 P8 P9 R3 R2 R4 R7 R6C1 C2 C4 C5 C6 C7 C9 C8 P2 P3 P4 4.7K 101K 10 10

10、J3 J2 T2 100K S7 S1 P6 5W 5W 5W 5W J4 10 J5 cw cw cw cw cw cw 1W1W cw cw B1 B1 B3 B2 B4 cw 1M D3 D4 6V cw D7 D9 D6 D8 13 11 1616 13 11 S6 6V OR 1K 1K 1K 1K 1K 1K 6V S6 6 7 8 1 2 3 1 2 3 6 7 8 1 2 3 6 7 8 + 6 7 8 1 2 3 + CD D D D D D D 9 C + 9 9 2 8 4 6 2 8 4 6 9 + OFF: 9 VDC 300V 300V 385V 415V 445V

11、 455V ON: 2.1 VDC B5 B5 T1 R44 100 1% R45 100 1% cw R17 22K D10D11 30-77503 30-77507 30-77505 VINTAGE 50 30-77501 80-77501 15-10640 15-02066 WHT EL84 TUBE FILAMENTS SET P11 FOR 75mA 4 30-77503 30-77501 V67 2 3 9 V7 7 2 3 9 V9 7 2 3 9 V87 2 3 9 N/U C49 .0022 C50 R57 4.7K WHT G1 FERRITE BEAD INPUT J1

12、Production Assembly Revision History (H)1. Revised PCB to Rev (E), Fixed tube arc problem. 2. Removed F2, Replaced F1, F3 with Fuse Link resistors. 3. Changed phone jacks to Rean type. 12340 World Trade Drive San Diego, CA 92128 (858) 487-1600 FAX 521-6032 REVISED BY: APPROVED: DRAWN BY:DATE: DATE:

13、ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C (I)1. Revised GND pad J2-J5, SPK1, SPK2 2. Added parallel spade connetors QC10, QC11 H4B.A H4B.D H4B.C H4B.B H4B.E H4A.DH4A.EH4A.A H4A.B H4A.C 6 VAC+6VAC - 6 VAC+ 6VAC - QT5 QT6 QT13 R100 D100 POWER 330R H11.E H11.B H11.C H11.A H11.D CHANGES FROM revF to rev

14、G: 1. REMOVED R47, R48 LINKS. CHANGES FROM revG to rev H: 1. CHANGED D100 POWER LED SUPPLY VOLTAGE PT. C81 C82 22F/450 22F/450 + + C83 + 82F/500v C84 + 82F/500v CHANGES FROM revH to rev I: 1. CHANGED PCB WIDTH TO STANDARD 6.175 2. ADDED BREAK-AWAY TO CONNECT POWER SWITCH AND AC RECEPTICAL 120V 240V

15、PL1 N E L S2.A S2.B QC5 QC6 QC8 QC9 GEORGE DREYER 2OCT07 Capacitor changes to correct for power amp oscilations: C34 changes from 56pF to 120pF C71 Added in Secondary across R71 value of 120pF (J)1. Replaced all tube sockets with inverted BELTON sockets. R51 JMP R52 JMP N/U C3 Joe W mod: C3=250pF, R

16、51=150k, R52=360K 3. Added R51, R52, C3 in preamp. R51, R52=0ohms, C3 N/U. JoeWmod. 2. Added C71 - 180pF in parallel with R71. S5.B 120/240vac S5.A 120 120 240 240 E.PETERSEN 16 8 4 GND 16 8 4 15VAC 8ohm 40VAC 8ohm-EL34 52 VAC 8ohm - N/L 15VAC 8ohm NO LOAD WITH 15VAC 8ohm N/L 1. Replaced all tube so

17、ckets with inverted BELTON sockets. CANT GET ANY SIGNAL FROM V5 TO V6-V9 (K) 2. Reverb unit options available. 4. Replaced all tube sockets with inverted BELTON sockets. H5.D H5.C H5.A H5.F H5.B H5.E H5.G H5.H DSPV C74 0.1F STD1 H91.E H91.D H91.A H91.B H91.C H91.F H91.G H91.H R65 24K R167 22K C REF

18、C REF R145 6.8KR14647K select adjust BYPASS R47 33K .047/600V C40 3. Bias stable 120/240: Add C40, R47., - R39=47k?, R40=220k? 2200F C41 + 2200F C42 + 2200F C43 + 2200F/35V C51 + 1N4007 D17 1N4007 D18 1N4007 D19 1N4007 D20 6 VAC+ REVERB UNIT SOCKET C15 0.0033uF D52 LIMIT n/u D53 n/u 2200F C53 + 2200

19、F C54 + 2200F C55 + 1N4007 D21 1N4007 D22 1N4007 D23 1N4007 D24 H1A.D H1A.I H1A.J H1B.D H1B.I H1B.J 6VAC - Q1 7805 +5V DSPV RED R55 47K DSPV RVB RTN RVB INPUT R139 47K R46 100K R48 33K B4 R53 n/u C23 n/u C44n/uR54 n/u C24n/u R56 24KR5922K R58 1K R68 47K select adjust 2200F C41A + 2200F C53A + *NOTE DSP MUST HAVE R1, R3, R15, R18 = 100K revL: swap tube V3.A-V3.B revL: swap tube V3.A-V3.B V1,V2, V3 V5FILAMENT 0.047uF C26 cut pcb traces DC filaments L L 27SEP2010 收音机爱好者资料库 Ra d i o Fa n s .CN