SERVICE MANUAL - Schematic Heaven

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’63 Fender ReverbREISSUE SERIESSERVICE MANUALFender Musical Instruments Corp.7975 North Hayden Road Scottsdale, AZ 85258

’63 Fender Reverb(This is the model name for warranty claims)SERVICE MANUALJUNE 1994 REV ATYPE PR 263IMPORTANT NOTICE:The information contained herein is CONFIDENTIAL and PROPRIETARY to Fender Musical Instruments Corp. It isdisclosed solely for use by qualified technicians for purposes of equipment maintenance and service. It is not to bedisclosed to others without the expressed permission of Fender Musical Instruments Co. All specifications subject tochange without notice.For warranty repair service, only Fender specified part numbers are to be used. It is recommended they also be usedfor post-warranty maintenance and repair.Parts marked with an asterisk (*) indicate the required use of that specific part. This is necessary for RELIABILITYand 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 CODESHARDWARE CODESCAP AECAP CACAP CDCAP MPFCAP MYCAP PFFBLXCRHWHMNIOHPPBPHPPHPSSMASMBSSTFZI Aluminum ElectrolyticCeramic AxialCeramic DiskMetalized Polyester FilmMylarPolyester Film/FoilRESISTOR CODESRES CCRES CFRES FPRES MFRES WW Carbon CompCarbon FilmFlame ProofMetal FilmWire Wound Black OxideChrome PlatedHex Washer HeadMachine ScrewNickel PlatedOval Head PhillipsParticle BoardPan Head PhillipsPan Head Phillips SemsSheet Metal "A" PointSheet Metal "B" PointStainless SteelThread FormingZinc Plated

’63 Fender ReverbTHEORY OF OPERATIONThe 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 C2increases the AC gain, and also reduces hum. The voltage divider R2 and R3 reduce the voltage so the overall gainis about 3. The signal then feeds the Dwell control, which determines the amount of signal sent to the reverb drivecircuit.V1B provides a voltage gain of 20. C3 and R9 make up a single pole filter which provides 6db per octave of lowfrequency 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 ofavailability, the original 6K6 power tube was replaced with a modern 6V6. CR7 (56V Zener) protects C4 fromexploding 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 aground reference (or bias) for the input of V3A. This prevents instability in V3A if the reverb recovery cable isdisconnected 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 offwhich 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 transformersecondary, suppresses EMI frequencies from 20kHz to 30mHz. This is necessary to conform to modern day NEMKOsafety requirements.The pot mounting brackets are all connected together via traces on the circuit board. The trace connects to the staraudio 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 tochassis/earth ground. R22 isolates audio ground from earth ground through the pot brackets. This eliminates internalground 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 andR23 are Flame Proof/Fusible resistors. If excessive current flows through theses resistors, they will not burn, they willsimply open.CR5 & 6 (across R23) provide an important safety feature. IF the guitar amp chassis becomes electrified, current willflow through the coax cable to the power supply ground of the Fender Reverb unit. The current will seek earth groundthrough R23. When R23 opens, the earth ground connection is broken. This will electrify the reverb unit’s ground andthus the guitar (ouch!). CR5 & 6 provide an alternate path to earth ground if R23 opens.

’63 Fender ReverbPARTS LISTNOTE: SHADED ITEMS ARE FOR REFERENCE ONLYQTY222111212111244114221122241412211PART #PRINTED CIRCUIT BOARD ASSEMBLYDESCRIPTIONREFERENCE 6921CABLE FLAT 6 CKT 2 INCHCAP AE AX 22uf 500V20%CAP AE AX 22uF 25V 20%CAP AE AX 47uF 500V 20%CAP AE220uF 16V 20%CAP CD 250PF 1000V 10%CAP MPF RDL .01uF 400V 10%CAP MPF RDL .017uF 400V 10%CAP MPF RDL .1uF 400V 10%CAP MPF RDL .1uF 630V 10%CAP PFF .0022uF 600VCONTROL SNAPIN 50K B TAPERCONTROL SNAPIN 250K B TAPERDIODE 1N4006/1N5062 800PRV 1ADIODE 6A 400V 6A4 LEAD FORMEDDIODE ZEN 1N5370V 56V 5W 5%FSTN TAB MALE.250X.032 PCB MTJACK PCB MONO CLOSED CKTJUMPER WIRE 22GA.5X.175PCB ASSY 63 TUBE REVERBPCB FAB 63 TUBE REVERBPIN MALE PCB .093 DOARES MF FUSE 1/4W 5% 15OHMRES CF 1/2W 5% 100OHMRES CF 1/4W 5% 1.5KRES CF 1/4W 5% 10KRES CF 1/2W 5% 100KRES CF 1/4W 5% 220KRES CF 1/4W 5% 1MRES CF 1/4W 5% 2.2MRES FILM 1W 5% 10KRES FILM 2W 5% 1KC12,13C2,4C14C7C10C1,9C5C5C6,8C3R17(TONE CONTROL)R5,18(DWELL, MIX CONTROL)CR1,2,3,4CR5,6CR7CP1-14J1,2(STUFFED)(RAW 11,12R21R10CHASSIS ASSEMBLYQTY2111111111111112PART 56033329BUSHING SNAP 5/16X17/32 BLKBUSHING SR .625X.062X37/64 BLKBUSHING SR .625X.125X37/64 WHTCABLE ASSY PWR W/.250 TAB 120VCABLE ASSY PWR 220/240VCHASSIS 63 REVERBCHIKE FILTERCHS ASSY BROWN 120V 63 TUBE RBCOLLAR-PILOT LIGHTFUSE HOLDER 3AG FINGER GRIPFUSE HOLDER 5mm FINGER GRIPFUSE TD 1-1/4X1/4 250V 0.5AFUSE TD 20mmX5mm 250V 250mATHOLDER IDAL LITE ASSY PILOTJACK PHONE OPEN CIRCUIT 11JACK PHONO 2 CND PNL MTREFERENCE DESIGNATION(@ POWER CABLE 100/120V)(@ POWER CABLE 230V)(POWER CABLE 100/120V ONLY)(POWER CABLE 230V)(RAW CHASSIS)L1(THROUGH FRONT PANEL)XF1(100V/120V ONLY)XF1(230V EXPORT)F1(100V/120V ONLY)F1(220V/230V/240V ONLY)(PILOT LAMP SOCKET)J3(FOOTSWITCH JACK)J4,5(REVERB JACKS)

’63 Fender ReverbQTY133121111221261111121222133111PART 2640104760904761004605CHASSIS ASSEMBLY (CONT)DESCRIPTIONREFERENCE DESIGNATIONJEWEL #20 PILOT LITEKNOB VINTAGE DARK BROWNKNOB VINTAGE CREAMNUT HOLDER PILOT LIGHT 1/16-27NUT KEPS #8-32 ZINCPANEL FRONT 63 TUBE RVRB BROWNPANEL FRONT 63 TUBE RVRB BLACKPILOT LIGHT #T47SCRW M 6-32X1/4 PHPSBLXSCRW M 8-32X3/8 PPHP BLXSCRW TF 6-32X3/8 PHP ZISTANDOFF 6-32X3/8 RND ALSWITCH TOGGLE DPST W/ NUTSTUBE 12AT7TUBE 6V6GTA STR391ATUBE 7025/12AX7TUBE RING UNIVERSAL (277H-2)TUBE SHIELDTUBE SOCKET 8 PINTUBE SOCKET 9 PINWASHER FIBER FLAT RCAWASHER FIBER SHOULDER RCAWASHER FLAT .482X.709 NIWSHR FLAT .380X.630 FIBERWSHR SHLDR FIB 3/8X5/8XFMR POWER 120V DOMESTICXFMR POWER EXPORTXFMR REVERB DRIVER OUTPUT(RED)(BROWN CABINET)(BLACK, BLOND CABINET)(POWER XFMR MOUNT)(BROWN, BLOND CABINET)(BLACK CABINET)(PCB MOUNT)(POWER XFMR MOUNT)(PCB MOUNT)S1(POWER SWITCH)V1V2V3(@V2)(@V1,3)XV2SV1,3@J4,5(@J4,5)(@ POWER SWITCH)(@J1,2,3)(@J1,2,3)T1(120V ONLY)T1(100/110/120/220/230/240V)T2CABINET ASSEMBLYQTY1111111111111211421114222843PART 036619022244029828037952037210037985BRACKET “L” REVERB HOLD DOWNCAB ASSY 63 REVERB BROWN/TANCAB ASSY 63 REVERB BLOND/OXBLDCAB ASSY 63 REVERB BLACK/SILVERBACK ASSY 63 REVERB BLACKBACK ASSY 63 REVERB BLONDBACK ASSY 63 REVERB BROWNCABLE REVERB 350MMGRILLE ASSY 63 REVERB TANGRILLE ASSY 63 REVERB OXBLOODGRILLE ASSY 63 REVERB SILVERHANDLE 9.25” BLACK RIBBEDHANDLE 9” LEATHER BROWNHANDLE CAP NINAMEPLATE 62 FENDERNAMEPLATE FENDER 65 TWINNUT KEPS #8-32 ZINCNUT KEPS 10-32 ZINCPANEL REAR 63 REVERB BRN TEXTPANEL REAR 63 REVERB BLK TEXXXTPIN ESCUTCHEON #16X3/8 NIREVERB UNIT 8 OHM 4AB3C1C VERTSCRW 8/32X1 PHP STL NISCRW M 10-32X1-1/2 THP NISCRW M 8-32/X-1/2 FHP BLKSCRW PB 8X3/4 PHP ZISCRW SMA #6X1 OHP NISCRW MSMA 2X3/8 OHP NISCRW SMA 2X3//8 PHP BLXREFERENCE DESIGNATION(BROWN CABINET, TAN GRILE)(BLOND CABINET, OXBLOOD GRILLE)BLACK CABINET, SILVER GRILLE(BACKBOARD)(BACKBOARD)(BACKBOARD)(USED ON BROWN CABINET)(USED ON BLOND CABINET)(USED ON BLACK CABINET)(USED ON BLACK CABINET)(ON BROWN & BLOND CAB)(@ HANDLE, BLACK CABINET)(BROWN, BLOND CABINET)(BLACK CABINET)(@GRILLE, REVERB MOUNT)(CHASSIS MOUNT)(@ BROWN, BLOND CABINET)(BLACK CABINET)(PANEL REAR, MOUNT)(LEATHER HANDLE MOUNT)(CHASSIS MOUNT)(@ GRILLE, REVERB MOUNT)(@ HOLD DOWN BRACKET)(GRILLE/BACK MOUNT)(62 VINTAGE LOGO MOUNT)(65 LOGO MOUNT)

’63 Fender ReverbQTY4484QTY1111112ftPART #CABINET ASSEMBLY (CONT)DESCRIPTIONREFERENCE DESIGNATION047784047607037215026459SPRING ANCHORSPRING EXTENSIONWSHR C’SNK #6 NIWSHR FLAT 6X3/8 ZIPART OTSWITCH 1BTN VINTAGE SHIELDBUSHIUNG SR .500X.100X7/16 BLKCOVER CUP SINGLE FT SW.ASSYPLUG PHONE RTANG SHIELDEDSWITCH SPST PUSH BUTTONWIRE BLACK STRANDED 2 COND PLAPART #DESCRIPTIONREFERENCE DESIGNATION047980047593MANUAL OWNERS 63 FENDER REVERBSCHEM REDUC 63 FENDER REVERB(WITH SERVICE DIAGRAM)(SPRING OVER SCREW)(FROM ANCHOR TO PAN)(GRILLE/BACK MOUNT)FOOTSWITCH ASSEMBLYREFERENCE DESIGNATION(COMPLETE FOOTSWITCH)MISCELLANEOUSQTY11

SERVICE MANUAL Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258 ’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

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