Carvin_77501revi 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 CANT GET ANY SIGNEL FROM V5 TO V6-V9 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 DRI

3、VE 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 FOOTSWITCH FS22 PIN 1&2 REVERSED DC FILIMENTS FOR CH1 HI FREQ RISE 52 VAC 8 - N/L -14.2dB 100Hz 40VAC 8-EL34 ACROSS STANDBY INSPECTION FOR PIN 1 REVERSED -15dB 100 Hz SOL

4、DER 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 H3A-1 TO 4 (VOL1 2) ALL CENTER 15VAC 8 CHANNEL 2 CHANNEL 1 IMPEDANCE FILAMENTS C. McEUEN .047/600V +3V RELAY+3V RELAY STAND BY V

5、OLUME 1 VOLUME 2 LINE OUT BIAS ADJ PRESENCE 1 70-00927 OPEN=CH1 V3,V4,V5 FUNCTION ALL FULL ALL FULL CABINET CHANNEL CHANNEL 350 VAC 350 VAC PROBLEM H2B-1&2 H2A-1&2 H2B-1&2 SPEAKER 5A500K 25A25K 25A25K RETURN 47/63V REVERB SLEEVE VOICED REVERB SWITCH 2FEB941N40071N4007 1N4007 1N4007 2200F 2200F 1N474

6、5 1N4745 1N4745 1N4745 2200F4.6VAC 3.2VAC 3.2VAC OUTPUT REVERB 250pF 560PF .0022 120PF B100K180PF DRIVE .0047 N/U POWER V6-V9 H1B-2 H1B-3 H8B-1 H8B-2 H1B-1 .0047 B1MEG .0022 H10-1 H10-2 H10-3 H1A-2 H2A-1 H2A-2 H2B-1 H2B-2 H1A-3 H8A-1H8A-2 H1A-1 B100K B1MEG B1MEG H3A-3 H3B-4 H3A-1H3B-1 H3A-4 H3B-3 H3

7、A-2H3B-2 V1,V2 LOAD. INPUTFREQ. B100K .0022 82PF V1.B V2.A V1.A V2.B 400V 400V 400V 400V V3.B 220K .0033 220 .022 10K 100K 220K 1.5K 150K .001 .033 100K 220K 1.5K V4.B V4.A V3.A 400V 400V 400V 400V V5.B V5.A SEND 2.2M .047 220K 1.5K 220K 1.5K 220K .001 100K 100K .047 560 4.7K2.2K350 100K .047 .047 2

8、20K 220K 56K 56K 56K 56K 350 350 350 350 BASS TREB BASS TREB SPK1 SPK2 400V .047 QC31 QC33 .047 470K 100K RING QC6A A25K 1.5K 2.2K B100K 2.2M H6-1H6-2 QC32 .0047 100K 56PF 5.9A 5.9A L1.B L1.AL2.A L2.B GNDA 100K .047 600V QC14 GNDB 280V Y/RD TONE 20mV .3mV 18mV 20mV 18mV 190V 300V 300V 190V 190V .002

9、2 .01 .01 220K 220K TIP R19 R10 R13 R11 R14 R15 R71 C72 C13 C14 C15 C17 C20 C21 C22 C70 C18 C12 R35 R12 R16 47K 47K .01 R18 R22 R21 R24 R66 R72 R23 R62 R25 R30 R32 R38 R36 R31R33 C26 C30 C29 C28 C33 R28 R29 R70 R34 R37 R60 R61 R64 R65 R63 C71 C38 C35 C37 C36 R42R43R41 R67 47K 22K 22K 10K 10W 16 YEL

10、GRN C45 MID MID 4/5 16 RED C16 RED BRN BLU S11 S10 C11 R73 22K C25 CH1 CH2 C10 QT8 QC7 C27 P11 20K YEL GRN P21 1/2 2/2 D12 D13D14 D15D16 C32 R20 C47 GND R26 BLK B/W ORG O/W QC1 QC2 QC4 QC3 QT9 GRN GRN BLKBLK 4,5 C19 C39 R40 C34 TIP N/UC24 C46 R39 3.9K GND R49 R50 C48 9dB 10K RED CH1 CH2 CH2 8mV CH1

11、R27 22K P10 C31 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 N/U101K 10 10 J3 J2 T2 100K 10 S7 8 4 S1 8 4 P6 5W 5W 5W 5W J4 10 1W J5 cw cw cw cw cw cw 1W1W 10 cw cw B1 B1 B3 B2 B4 B4 cw N/U 1M D3 D4 6V cw D7 D9 D6 D8 13 11 1616 13 11 S6 6V OR 1K 1K 1K 1

12、K 1K 1K 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 0 + C D D D D D D D D 9 C C + + 9 9 2 8 4 6 2 8 4 6 9 + OFF: 9 VDC 190V 300V 300V 250V 385V 415V 445V 455V ON: 2.1 VDC B5 B5 T1 R44 100 1% R45 100 1% QC13A 400V cw R17 22K D10D11 30-77503 30-77507 30-77505 VINTAGE 50 30-7750

13、1 80-77501 15-10640 15-02066 WHT EL84 TUBE FILAMENTS SET P11 FOR 75mA 4 30-77503 30-77501 1MEG 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 N/UC23 INPUT J1 Production Assembly Revision History (H)1. Revised PCB to Rev (E), Fixed tube arc problem. 2. Remove

14、d 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: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C (I)1. Revised GND pad J2-J5, SPK1, SPK2 2. Added parallel

15、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 100 H11.E H11.B H11.C H11.A H11.D CHANGES FROM revF to revG: 1. REMOVED R47, R48 LINKS. CHANGES FROM revG to rev H: 1. CHANGED D100 POWER LED SUPPLY VOLTAGE PT

16、. C81 C82 22F/450 22F/450 + + C83 + 82F/500v C84 + 82F/500v C40 C4122 22 M. OTAVKA 5DEC05 I 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 PL1 N E L B3 B2 B1 REMOVE B2, B3 240V OPERATION: S2.A S2.B QC5 QC6 QC8 QC9 INSTALL B1 120V OPERATION: REMOVE B1 INSTALL B2, B3 I 收音机爱好者资料库 Ra d i o Fa n s .CN