Carvin_77501revd 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 LAST USED LIST ACROSS STANDBY INSPECTION FOR PIN 1 REVERSED -

4、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 H3A-1 TO 4 (VOL1 2) ALL CENTER 15VAC 8 CHANNEL 2 CHANNEL 1 IMPEDANCE FILAMENTS C. McEUEN C. McEUEN .047/600V 5-8,

5、10,11 +3V RELAY+3V RELAY STAND BY VOLUME 1 VOLUME 2 LINE OUT BIAS ADJ PRESENCE 1 70-00927 OPEN=CH1 V3,V4,V5 INTERNAL 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 2FEB94

6、1N40071N4007 1N40071N4007 1N4007 2200F 2200F OTHERS 1N4745 1N4745 1N4745 1N4745 2200F (240V) 4.6VAC 3.2VAC 3.2VAC OUTPUT REVERB 250pF 560PF .0022 120PF B100K 180PF 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-1H

7、8A-2 H1A-1 B100K B1MEG B1MEG H7A-1H7A-2 H7B-1H7B-2 70-73 H3A-3 H3B-4 H3A-1H3B-1 H3A-4 H3B-3 H3A-2H3B-2 QC13B V1,V2 70-72 20,21 60-67 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

8、 400V 400V 400V V5.B V5.A SEND 2.2M .047 220K 1.5K 220K 1.5K 220K .001 100K 100K .047 560 4.7K 2.2K 350 100K .047 .047 220K 220K 56K 56K 56K 56K 350 350 350 350 500V 500V 500V 500V BASS TREB BASS TREB SPK1 SPK2 400V .047 QC31 QC33 QC35 QC36 QC6B QC37 1/2W H5-1 H5-2 LAMP 500V .047 470K 100K RING QC6A

9、 A25K 1.5K 2.2K B100K 2.2M 4, 5 1, 2 2, 3 2, 7 USED 1AGC H6-1H6-2 10SB QC32 .0047 100K 56PF 5.9A 5.9A L1.B L1.AL2.A L2.B GNDA 3, 8 FUSE 100K .047 600V 1AGC QC14 GNDB 280V Y/RD TONE 20mV .3mV 18mV 20mV 18mV 190V 300V 300V 190V 190V .0022 .01 .01 220K 220K TIP R19 R10 R13 R11 R14 R15 R71 C72 C13 C14 C

10、15 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 C40C41 C42C43 C35 C37 C36 R42 R43 R41 R67 47K 22K 22K 10K 10W 16 YEL GRN C45 SYM MID MID 4/5 16 RED C16 PL1 OFF RED BR

11、N BLU S11 S10 C11 R73 22K C25 CH1 CH2 C10 QC8 QC7 C27 10 P11 20K YEL GRN P21 1/2 2/2 C44 D12 D13D14 D15D16 R46 D20 D21 C32 R20 C47 ALL 6-9 GND NOT R26 BLK B/W ORG O/W QC1 QC2 QC4 QC3 QC9 GRN GRN BLKBLK 4,5 C19 C39 R40 C34 TIP N/UC24 C46 1-7 R39 3.9K GND R49 R50 C48 9dB 10K RED CH1 CH2 CH2 8mV CH1 R2

12、7 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 N/U101K 10 10 J3 J2 T2 100K 10 22 22 22 S7 22 8 4 S1 8 4 P6 5W 5W 5W 5W J4 10 1W J5 S8 cw cw cw cw cw cw 1W1W QC 10 cw cw B1 B1 B2 B2B3 B3 22 B4 B4 cw N/U 21 1M D3 D4 6V F1 F2 cw D7 D9 D6 D8 11

13、 13 11 1616 13 11 S6 6V 16 10 F3 OR 1K 1K 1K 1K 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 N E L C C D H J L P R S V B + + 1 - 5 - - - - - - - - - 9 - - 9 2 8 4 6 2 8 4 6 9 2 + - - OFF: 9 VDC 190V 300V 300V 250V 385V 415V 445V 455V ON: 2.1 VDC

14、 B5 B5 T1 R44 100 1% R45 100 1% QC13A 400V cw R17 22K D10D11 30-77508 30-77503 30-77507 30-77505 VINTAGE 50 D30-77501 80-77501 15-10640 15-02066 WHT EL84 TUBE FILAMENTS SET P11 FOR 75mA 5 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 BEA

15、D N/UC23 31-37 503 1-14 30-7750130-7750830-77507 - 47,481-50,57 INPUT J1 1-37506,8,21 5,10-12,34 4 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 Change all headers to type SHS.(F) (G)Resistors R44 R45 to 1%. G 20JUN96 Production Assembly Revision History Not Used Not Used 收音机爱好者资料库 Ra d i o Fa n s .CN