Fender_63_reverb_manual 电路图 维修原理图.pdf

63 Fender Reverb REISSUE SERIES SERVICE MANUAL Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258 收音机爱好者资料库 Ra d i o Fa n s .CN 63 Fender Reverb (This is the model name for warranty claims) SERVICE MANUAL JUNE 1994 REV A TYPE PR 263 IMPORTANT NOTICE: The information contained herein is CONFIDENTIAL and PROPRIETARY to Fender Musical Instruments Corp. It is disclosed solely for use by qualified technicians for purposes of equipment maintenance and service. It is not to be disclosed to others without the expressed permission of Fender Musical Instruments Co. All specifications subject to change without notice. For warranty repair service, only Fender specified part numbers are to be used. It is recommended they also be used for post-warranty maintenance and repair. Parts marked with an asterisk (*) indicate the required use of that specific part. This is necessary for RELIABILITY and SAFETY requirements. DO NOT USE A SUBSTITUTE! A coded naming convention is used in the description of certain parts. The codes and what they mean are as follows: CAPACITOR CODES HARDWARE CODES CAP AE=Aluminum ElectrolyticBLX=Black Oxide CAP CA=Ceramic AxialCR=Chrome Plated CAP CD=Ceramic DiskHWH=Hex Washer Head CAP MPF=Metalized Polyester FilmM=Machine Screw CAP MY=MylarNI=Nickel Plated CAP PFF=Polyester Film/FoilOHP=Oval Head Phillips PB=Particle Board RESISTOR CODESPHP=Pan Head Phillips PHPS=Pan Head Phillips Sems RES CC=Carbon CompSMA=Sheet Metal A Point RES CF=Carbon FilmSMB=Sheet Metal B Point RES FP=Flame ProofSS=Stainless Steel RES MF=Metal FilmTF=Thread Forming RES WW=Wire WoundZI=Zinc Plated 收音机爱好者资料库 Ra d i o Fa n s .CN 63 Fender Reverb THEORY OF OPERATION The input jack contains a Tip Shunt switch contact which will ground the input when the plug is removed. The input impedance consists of R1R11 and R12 in parallel, and equals approx. 500k ohm. The first stage (V1A) provides a voltage gain of 38.8 (V out/V in = 1.94V/50mV =38.8). Bypass capacitor C2 increases the AC gain, and also reduces hum. The voltage divider R2 and R3 reduce the voltage so the overall gain is about 3. The signal then feeds the Dwell control, which determines the amount of signal sent to the reverb drive circuit. V1B provides a voltage gain of 20. C3 and R9 make up a single pole filter which provides 6db per octave of low frequency roll off at 300Hz. Excessive low frequencies can make the reverb sound unnatural and boomy. V2 is a 6V6GT power tube which supplies voltage and current gain to drive the reverb transformer. Due to the lack of availability, the original 6K6 power tube was replaced with a modern 6V6. CR7 (56V Zener) protects C4 from exploding if V2 develops an internal short. This is necessary to conform to modern day NEMKO safety requirements. The footswitch turns the reverb on and off by grounding the input to the reverb recovery circuit. R13 provides a ground reference (or bias) for the input of V3A. This prevents instability in V3A if the reverb recovery cable is disconnected from the reverb pan. V3A senses the reverb return signal and amplifies it with a gain of about 37. The Tone control (R17) attenuates the high frequencies above 3kHz, through C9. C10 provides a slight bass roll off which is affected by the position of the Mix control in relation to the input impedance of the guitar amplifier. V3B is a cathode follower, unity gain buffer amplifier for the dry signal. C11 is a non-polarized, metalized polyester film capacitor, which is located across the high voltage transformer secondary, suppresses EMI frequencies from 20kHz to 30mHz. This is necessary to conform to modern day NEMKO safety requirements. The pot mounting brackets are all connected together via traces on the circuit board. The trace connects to the star audio ground through R22, R22 places 15 ohms of resistance between audio ground and the pot mounting brackets. This is done for two reasons. Fist, with the circuit board installed, the pot brackets are physically connected to chassis/earth ground. R22 isolates audio ground from earth ground through the pot brackets. This eliminates internal ground loops. Secondly, when the circuit board is removed for repair and testing, R22 provides a ground reference (15 ohms) for the pot brackets. R23 places 15 ohms of resistance between audio ground and chassis/earth ground. This minimizes hum by eliminating ground loops internally and externally when connection with other units. R22 and R23 are Flame Proof/Fusible resistors. If excessive current flows through theses resistors, they will not burn, they will simply open. CR5 & 6 (across R23) provide an important safety feature. IF the guitar amp chassis becomes electrified, current will flow through the coax cable to the power supply ground of the Fender Reverb unit. The current will seek earth ground through R23. When R23 opens, the earth ground connection is broken. This will electrify the reverb units ground and thus the guitar (ouch!). CR5 & 6 provide an alternate path to earth ground if R23 opens. 收音机爱好者资料库 Ra d i o Fa n s .CN 63 Fender Reverb PARTS LIST NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY PRINTED CIRCUIT BOARD ASSEMBLY QTY PART # DESCRIPTION REFERENCE DESIGNATION 2037325CABLE FLAT 6 CKT 2 INCH 2024819CAP AE AX 22uf 500V 20%C12,13 2009512CAP AE AX 22uF 25V 20%C2,4 1041589CAP AE AX 47uF 500V 20%C14 1038695CAP AE 220uF 16V 20%C7 1020917CAP CD 250PF 1000V 10%C10 2024823CAP MPF RDL .01uF 400V 10%C1,9 1024845CAP MPF RDL .017uF 400V 10%C5 2024854CAP MPF RDL .1uF 400V 10%C5 1024855CAP MPF RDL .1uF 630V 10%C6,8 1026202CAP PFF .0022uF 600VC3 1047608CONTROL SNAPIN 50K B TAPERR17 (TONE CONTROL) 2036962CONTROL SNAPIN 250K B TAPERR5,18 (DWELL, MIX CONTROL) 4026730DIODE 1N4006/1N5062 800PRV 1ACR1,2,3,4 4029045DIODE 6A 400V 6A4 LEAD FORMEDCR5,6 1047206DIODE ZEN 1N5370V 56V 5W 5%CR7 14025802FSTN TAB MALE.250X.032 PCB MTCP1-14 2037117JACK PCB MONO CLOSED CKTJ1,2 2020888JUMPER WIRE 22GA.5X.175 1047596PCB ASSY 63 TUBE REVERB(STUFFED) 1047595PCB FAB 63 TUBE REVERB(RAW PCB) 2031901PIN MALE PCB .093 DOASP1,2 2033205*RES MF FUSE 1/4W 5% 15OHMR22,23 2026368RES CF 1/2W 5% 100OHMR19,20 4024969RES CF 1/4W 5% 1.5KR4,6,8,15 1024981RES CF 1/4W 5% 10KR2 4025116RES CF 1/2W 5% 100KR3,7,14,16 1025059RES CF 1/4W 5% 220KR9 2025069RES CF 1/4W 5% 1MR1,13 2025075RES CF 1/4W 5% 2.2MR11,12 1027349RES FILM 1W 5% 10KR21 1036921RES FILM 2W 5% 1KR10 CHASSIS ASSEMBLY QTY PART # DESCRIPTION REFERENCE DESIGNATION 2018022BUSHING SNAP 5/16X17/32 BLK 1026038BUSHING SR .625X.062X37/64 BLK( POWER CABLE 100/120V) 1010401BUSHING SR .625X.125X37/64 WHT( POWER CABLE 230V) 1026541CABLE ASSY PWR W/.250 TAB 120V(POWER CABLE 100/120V ONLY) 1033331CABLE ASSY PWR 220/240V(POWER CABLE 230V) 1047597CHASSIS 63 REVERB(RAW CHASSIS) 1022707CHIKE FILTERL1 1047988CHS ASSY BROWN 120V 63 TUBE RB 1032219COLLAR-PILOT LIGHT(THROUGH FRONT PANEL) 1036702FUSE HOLDER 3AG FINGER GRIPXF1 (100V/120V ONLY) 1036703FUSE HOLDER 5mm FINGER GRIPXF1 (230V EXPORT) 1010036FUSE TD 1-1/4X1/4 250V 0.5AF1 (100V/120V ONLY) 1013109FUSE TD 20mmX5mm 250V 250mATF1 (220V/230V/240V ONLY) 1021741HOLDER IDAL LITE ASSY PILOT(PILOT LAMP SOCKET) 1021956JACK PHONE OPEN CIRCUIT 11J3 (FOOTSWITCH JACK) 2033329JACK PHONO 2 CND PNL MTJ4,5 (REVERB JACKS) 63 Fender Reverb CHASSIS ASSEMBLY (CONT) QTY PART # DESCRIPTION REFERENCE DESIGNATION 1025718JEWEL #20 PILOT LITE(RED) 3036678KNOB VINTAGE DARK BROWN(BROWN CABINET) 3041263KNOB VINTAGE CREAM(BLACK, BLOND CABINET) 1031625NUT HOLDER PILOT LIGHT 1/16-27 2022004NUT KEPS #8-32 ZINC(POWER XFMR MOUNT) 1047598PANEL FRONT 63 TUBE RVRB BROWN(BROWN, BLOND CABINET) 1047599PANEL FRONT 63 TUBE RVRB BLACK(BLACK CABINET) 1021642PILOT LIGHT #T47 12031184SCRW M 6-32X1/4 PHPSBLX(PCB MOUNT) 2026553SCRW M 8-32X3/8 PPHP BLX(POWER XFMR MOUNT) 12038900SCRW TF 6-32X3/8 PHP ZI 6031073STANDOFF 6-32X3/8 RND AL(PCB MOUNT) 1036570SWITCH TOGGLE DPST W/ NUTSS1 (POWER SWITCH) 1023531TUBE 12AT7V1 1023564TUBE 6V6GTA STR391AV2 1013341TUBE 7025/12AX7V3 1020424TUBE RING UNIVERSAL (277H-2)(V2) 2036598TUBE SHIELD (V1,3) 1023580TUBE SOCKET 8 PINXV2 2023606TUBE SOCKET 9 PINSV1,3 2047950WASHER FIBER FLAT RCA J4,5 2047949WASHER FIBER SHOULDER RCA(J4,5) 19904300920WASHER FLAT .482X.709 NI( POWER SWITCH) 3027520WSHR FLAT .380X.630 FIBER(J1,2,3) 3026401WSHR SHLDR FIB 3/8X5/8(J1,2,3) 1047609XFMR POWER 120V DOMESTICT1 (120V ONLY) 1047610XFMR POWER EXPORTT1 (100/110/120/220/230/240V) 104605XFMR REVERB DRIVER OUTPUTT2 CABINET ASSEMBLY QTY PART # DESCRIPTION REFERENCE DESIGNATION 1047606BRACKET “L” REVERB HOLD DOWN 1047591CAB ASSY 63 REVERB BROWN/TAN(BROWN CABINET, TAN GRILE) 1037003CAB ASSY 63 REVERB BLOND/OXBLD(BLOND CABINET, OXBLOOD GRILLE) 1047590CAB ASSY 63 REVERB BLACK/SILVERBLACK CABINET, SILVER GRILLE 1047625BACK ASSY 63 REVERB BLACK(BACKBOARD) 1047638BACK ASSY 63 REVERB BLOND(BACKBOARD) 1047640BACK ASSY 63 REVERB BROWN(BACKBOARD) 1047816CABLE REVERB 350MM 1047639GRILLE ASSY 63 REVERB TAN(USED ON BROWN CABINET) 1047637GRILLE ASSY 63 REVERB OXBLOOD(USED ON BLOND CABINET) 1047627GRILLE ASSY 63 REVERB SILVER(USED ON BLACK CABINET) 1037790HANDLE 9.25” BLACK RIBBED(USED ON BLACK CABINET) 1036129HANDLE 9” LEATHER BROWN(ON BROWN & BLOND CAB) 2036478HANDLE CAP NI( HANDLE, BLACK CABINET) 1036795NAMEPLATE 62 FENDER(BROWN, BLOND CABINET) 1023192NAMEPLATE FENDER 65 TWIN(BLACK CABINET) 4022004NUT KEPS #8-32 ZINC(GRILLE, REVERB MOUNT) 2025819NUT KEPS 10-32 ZINC(CHASSIS MOUNT) 1047603PANEL REAR 63 REVERB BRN TEXT( BROWN, BLOND CABINET) 1048462PANEL REAR 63 REVERB BLK TEXXXT(BLACK CABINET) 036650PIN ESCUTCHEON #16X3/8 NI(PANEL REAR, MOUNT) 1047604REVERB UNIT 8 OHM 4AB3C1C VERT 4026419SCRW 8/32X1 PHP STL NI(LEATHER HANDLE MOUNT) 2036619SCRW M 10-32X1-1/2 THP NI(CHASSIS MOUNT) 2022244SCRW M 8-32/X-1/2 FHP BLK( GRILLE, REVERB MOUNT) 2029828SCRW PB 8X3/4 PHP ZI( HOLD DOWN BRACKET) 8037952SCRW SMA #6X1 OHP NI(GRILLE/BACK MOUNT) 4037210SCRW MSMA 2X3/8 OHP NI(62 VINTAGE LOGO MOUNT) 3037985SCRW SMA 2X3/8 PHP BLX(65 LOGO MOUNT) 63 Fender Reverb CABINET ASSEMBLY (CONT) QTY PART # DESCRIPTION REFERENCE DESIGNATION 4047784SPRING ANCHOR(SPRING OVER SCREW) 4047607SPRING EXTENSION(FROM ANCHOR TO PAN) 8037215WSHR CSNK #6 NI(GRILLE/BACK MOUNT) 4026459WSHR FLAT 6X3/8 ZI FOOTSWITCH ASSEMBLY QTY PART # DESCRIPTION REFERENCE DESIGNATION 1048458FOOTSWITCH 1BTN VINTAGE SHIELD(COMPLETE FOOTSWITCH) 1021691BUSHIUNG SR .500X.100X7/16 BLK 1022657COVER CUP SINGLE FT SW.ASSY 1028915PLUG PHONE RTANG SHIELDED 1024042SWITCH SPST PUSH BUTTON 12ft023861WIRE BLACK STRANDED 2 COND PLA MISCELLANEOUS QTY PART # DESCRIPTION REFERENCE DESIGNATION 1047980MANUAL OWNERS 63 FENDER REVERB 1047593SCHEM REDUC 63 FENDER REVERB(WITH SERVICE DIAGRAM)