Carvin_vintage50 电路图 维修原理图.pdf

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1、C34 STOPS OSCILLATION ON TOP WAVE WITH SPKR FOOTSWITCH FS22 DC FILIMENTS FOR 2.2M 22K 2.2K ACROSS STANDBY CHANNEL 2 CHANNEL 1 .047/600V +3V RELAY VOLUME 1 VOLUME 2 BIAS ADJ 70-00927 CHANNEL 5A500K 25A25K 25A25K RETURN 47/63V REVERB SLEEVE REVERB 1N40071N4007 1N40071N4007 1N4007 2200F 2200F 1N4745 1N

2、4745 1N4745 1N4745 2200F REVERB 250pF 560PF .0022 120PF B100K DRIVE .0047 H1B-3 B1MEG .0022 H10-1 H10-2 H10-3 H2A-1 H2A-2 H2B-1 H2B-2 H1A-3 B100K B1MEG B1MEG H3A-3 V1,V2 LOAD. B100K .0022 82PF V1.B V2.A V1.A V2.B 400V 400V 400V 400V V3.B 220K .0033 220 .022 220K 1.5K 150K .001 .033 100K 220K 1.5K V4

3、.B V4.A V3.A 400V 400V 400V 400V V5.B V5.A 2.2M .047 220K 1.5K 220K 220K .001 100K 100K .047 560 4.7K2.2K350 100K .047 .047 220K 220K 56K 56K 56K 56K 500V 500V 500V500V BASS TREB BASS TREB 400V .047 QC6B QC37 QC5 500V .047 100K RING QC6A 1.5K B100K 2.2M QC6 .0047 100K 56PF L1.B L1.A L2.B GNDA 100K G

4、NDB 280V 190V 300V 300V 190V 190V .01 .01 220K 220K TIP R19 R10 R13 R11 R14 R15 C13 C14 C20 C21 C22 C18 C12 R35 R12 R16 47K 47K .01 R18 R22 R21 R24 R23 R25 R30 R32 R38 R36 R31R33 C26 C30 C29 C28 C33 R28 R29 R34 R37 R60 R61 R64 R65 C38 C40C41 C42C43 C35 C37 C36 R42 R43 R41 47K 22K 22K 10W C45 MID MID

5、 C16 S11 S10 C11 C25 CH1 CH2 C27 P11 20K 2/2 C44 D12 D13D14 D15D16 R20 C47 GND R26 QC1 QC2 QC4 QC3 4,5 C19 C39 R40 C34 C46 R39 3.9K R49 R50 9dB 10K R27 22K P10 C31 P1 .047 R8 D5 D1 D2 R1 R9 R5 P5 P7 P8 P9 R3 R2 R4 R7 R6C1 C2 C4 C5 C6 C7 C9 C8 P2 P3 P4 4.7K 1K 10 10 J3 100K 10 22 22 22 22 P6 10 1W cw

6、 cw cw cw cw cw 1W 1W 10 cw cw B1 22 B4 B4 1M D3 D4 6V cw D7 D9 D6 D8 13 11 16 11 6V 6V S6 6 7 8 1 2 3 1 2 3 6 7 8 6 7 8 6 7 8 1 2 3 1 2 3 + 6 7 8 1 2 3 + C D D D D D D D D C C + 9 9 2 8 4 6 9 + OFF: 9 VDC 190V 300V 300V 250V 385V 415V 445V 455V ON: 2.1 VDC B5 R44 100 1% R45 100 1% 400V cw D10D11 SE

7、T P11 FOR 75mA 30-77503 1MEG V6 7 2 3 9 V7 7 2 3 9 V9 7 2 3 9 V8 7 2 3 9 .0022 C50 R57 4.7K G1 FERRITE BEAD INPUT J1 N/U 收音机爱好者资料库 Ra d i o Fa n s .CN 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 NOTE

8、D. 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 TO 10K ALL TONE FULL CANT GET ANY SIGNEL FROM V5 TO V6-V9 SQUARE WAVE OSCILLATOR AT SPKR OUT NOTES UNLESS OTHERWISE SPECIFIED. 5. ADDED AS SECONDARY

9、OPERATION. BIAS SETS OK FOR POWER TUBES BUT NO AMP FEEDBACK - EXTREME GAIN SELECT SWITCH DOES NOT WORK- DRIVE STARTS TO CLIP ALL TUBE GUITAR AMP NO VOLTAGE ON RELAY ALL TONE FULL: 26dB 15VAC 8 NO LOAD OUTPUT TRANSFORMER WITH 15VAC 8 N/L PIN 1&2 REVERSED CH1 HI FREQ RISE 52 VAC 8 - N/L 1K -14.2dB 100

10、Hz 40VAC 8-EL34 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 REVERB REC. FOOTSWITCH 12AX7 TUBE CLOSED=CH2 5mm x 20mm H3A1 TO 4 (VOL1 2) ALL CENTER 15VAC 8 IMPEDANCE FILAMENTS C. McEUEN C

11、. McEUEN +3V RELAY STAND BY LINE OUT PRESENCE 1 OPEN=CH1 V3,V4,V5 INTERNAL FUNCTION ALL FULL ALL FULL CABINET CHANNEL 350 VAC 350 VAC PROBLEM H2B1&2 H2A1&2 H2B1&2 SPEAKER VOICED SWITCH 2FEB94 (240V) 4.6VAC 3.2VAC 3.2VAC OUTPUT POWER V6-V9 H1B-2 H8B-1 H8B-2 H1B-1 .0047 H1A-2 H8A-1H8A-2 H1A-1 H7A-1H7A

12、-2 H7B-1H7B-2 H3B-4 H3A-1H3B-1 H3A-4 H3B-3 H3A-2H3B-2 QC13B INPUTFREQ. SEND 350 350 350 350 SPK1 SPK2 QC51 QC52 QC53 QC54 QC31 QC33 QC35 QC36 1/2W H5-1 H5-2 LAMP QC55 470K A25K H6-1H6-2 QC32 5.9A 5.9A L2.A L2.B FUSE .047 600V QC14 Y/RD TONE 20mV .3mV 18mV 20mV 18mV .01 R71 C72 C70 R66 R72 R62 R70 R6

13、3 R67 10K 16 YEL GRN 4/5 16 RED PL1 OFF RED BRN BLU R73 22K QC8 QC7 10 YEL GRN P21 1/2 R46 D20 D21 BLK B/W ORG O/W QC9 GRN GRN BLKBLK TIP GND C48 RED CH1 CH2 CH2 8mV CH1 J2 T2 S7 8 4 S1 8 4 5W 5W 5W 5W J4 J5 S8 B1 B2 B2B3 B3 cw 16 13 S6 OR 1K 1K 1K 1K 1K 1K 0 9 N E L 2 8 4 6 B5 T1 QC13A R17 22K 30-7

14、7508 30-77503 30-77507 30-77505 VINTAGE 50 30-77501 80-77501 15-10640 15-02066 WHT EL84 TUBE FILAMENTS 5 4 30-77501 WHT 12340 WORLD TRADE DR. SAN DIEGO, CA 92128 (619) 487-1600 FAX 487-6629 REVISED BY: APPROVED: DRAWN BY: DATE: DATE: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C Production Assembly Revision History Not Used Not Used 0.56 R47 FUSE LINK 0.56 R48 FUSE LINK E1 1. Change H3 to a 4 pin Header ribbon. 2. All PCB wire to get Spade Connects. 3. Remove all unused parts. H1 (H1) 5DEC97 收音机爱好者资料库 Ra d i o Fa n s .CN