’63 Fender Reverb
REISSUE SERIES
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 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 Electrolytic |
BLX |
= |
Black Oxide |
CAP CA |
= |
Ceramic Axial |
CR |
= |
Chrome Plated |
CAP CD |
= |
Ceramic Disk |
HWH |
= |
Hex Washer Head |
CAP MPF |
= |
Metalized Polyester Film |
M |
= |
Machine Screw |
CAP MY |
= |
Mylar |
NI |
= |
Nickel Plated |
CAP PFF |
= |
Polyester Film/Foil |
OHP |
= |
Oval Head Phillips |
RESISTOR CODES |
PB |
= |
Particle Board |
||
PHP |
= |
Pan Head Phillips |
|||
|
|
|
PHPS |
= Pan Head Phillips Sems |
|
RES CC |
= |
Carbon Comp |
SMA |
= Sheet Metal "A" Point |
|
RES CF |
= |
Carbon Film |
SMB |
= Sheet Metal "B" Point |
|
RES FP |
= |
Flame Proof |
SS |
= |
Stainless Steel |
RES MF |
= |
Metal Film |
TF |
= |
Thread Forming |
RES WW |
= |
Wire Wound |
ZI |
= |
Zinc Plated |
’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 unit’s ground and thus the guitar (ouch!). CR5 & 6 provide an alternate path to earth ground if R23 opens.
’63 Fender Reverb
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
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|
PRINTED CIRCUIT BOARD ASSEMBLY |
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QTY |
PART # |
DESCRIPTION |
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|
REFERENCE DESIGNATION |
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2 |
037325 |
CABLE FLAT 6 CKT 2 INCH |
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|
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2 |
024819 |
CAP AE AX 22uf 500V |
|
20% |
C12,13 |
|
||
2 |
009512 |
CAP AE AX 22uF 25V |
20% |
C2,4 |
|
|||
1 |
041589 |
CAP AE AX 47uF 500V |
20% |
C14 |
|
|||
1 |
038695 |
CAP AE |
220uF 16V |
20% |
C7 |
|
||
1 |
020917 |
CAP CD |
250PF 1000V 10% |
C10 |
|
|||
2 |
024823 |
CAP MPF RDL .01uF 400V |
10% |
C1,9 |
|
|||
1 |
024845 |
CAP MPF RDL .017uF 400V |
10% |
C5 |
|
|||
2 |
024854 |
CAP MPF RDL .1uF 400V |
10% |
C5 |
|
|||
1 |
024855 |
CAP MPF RDL .1uF |
630V 10% |
C6,8 |
|
|||
1 |
026202 |
CAP PFF |
.0022uF |
600V |
|
C3 |
|
|
1 |
047608 |
CONTROL SNAPIN 50K B TAPER |
R17 |
(TONE CONTROL) |
||||
2 |
036962 |
CONTROL SNAPIN 250K B TAPER |
R5,18 |
(DWELL, MIX CONTROL) |
||||
4 |
026730 |
DIODE 1N4006/1N5062 800PRV 1A |
CR1,2,3,4 |
|
||||
4 |
029045 |
DIODE 6A 400V 6A4 LEAD FORMED |
CR5,6 |
|
||||
1 |
047206 |
DIODE ZEN 1N5370V 56V 5W 5% |
CR7 |
|
||||
14 |
025802 |
FSTN TAB MALE.250X.032 PCB MT |
CP1-14 |
|
||||
2 |
037117 |
JACK PCB MONO CLOSED CKT |
J1,2 |
|
||||
2 |
020888 |
JUMPER WIRE 22GA.5X.175 |
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|
|
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1 |
047596 |
PCB ASSY 63 TUBE REVERB |
(STUFFED) |
|
||||
1 |
047595 |
PCB FAB 63 TUBE REVERB |
|
(RAW PCB) |
|
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2 |
031901 |
PIN MALE PCB .093 DOA |
|
SP1,2 |
|
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2 |
033205* |
RES MF FUSE 1/4W |
5% |
15OHM |
R22,23 |
|
||
2 |
026368 |
RES CF |
1/2W 5% |
100OHM |
R19,20 |
|
||
4 |
024969 |
RES CF |
1/4W 5% 1.5K |
|
R4,6,8,15 |
|
||
1 |
024981 |
RES CF |
1/4W 5% |
10K |
|
R2 |
|
|
4 |
025116 |
RES CF |
1/2W 5% |
100K |
|
R3,7,14,16 |
|
|
1 |
025059 |
RES CF |
1/4W 5% 220K |
|
R9 |
|
||
2 |
025069 |
RES CF |
1/4W 5% 1M |
|
|
R1,13 |
|
|
2 |
025075 |
RES CF |
1/4W 5% 2.2M |
|
R11,12 |
|
||
1 |
027349 |
RES FILM 1W 5% 10K |
|
|
R21 |
|
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1 |
036921 |
RES FILM |
2W 5% |
1K |
|
|
R10 |
|
|
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CHASSIS ASSEMBLY |
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|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
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2 |
018022 |
BUSHING SNAP 5/16X17/32 BLK |
|
|
1 |
026038 |
BUSHING SR .625X.062X37/64 BLK |
(@ POWER CABLE 100/120V) |
|
1 |
010401 |
BUSHING SR .625X.125X37/64 WHT |
(@ POWER CABLE 230V) |
|
1 |
026541 |
CABLE ASSY PWR W/.250 TAB 120V |
(POWER CABLE 100/120V ONLY) |
|
1 |
033331 |
CABLE ASSY PWR 220/240V |
(POWER CABLE 230V) |
|
1 |
047597 |
CHASSIS 63 REVERB |
(RAW CHASSIS) |
|
1 |
022707 |
CHIKE FILTER |
L1 |
|
1 |
047988 |
CHS ASSY BROWN 120V 63 TUBE RB |
|
|
1 |
032219 |
COLLAR-PILOT LIGHT |
(THROUGH FRONT PANEL) |
|
1 |
036702 |
FUSE HOLDER 3AG FINGER GRIP |
XF1 |
(100V/120V ONLY) |
1 |
036703 |
FUSE HOLDER 5mm FINGER GRIP |
XF1 |
(230V EXPORT) |
1 |
010036 |
FUSE TD 1-1/4X1/4 250V 0.5A |
F1 |
(100V/120V ONLY) |
1 |
013109 |
FUSE TD 20mmX5mm 250V 250mAT |
F1 |
(220V/230V/240V ONLY) |
1 |
021741 |
HOLDER IDAL LITE ASSY PILOT |
(PILOT LAMP SOCKET) |
|
1 |
021956 |
JACK PHONE OPEN CIRCUIT 11 |
J3 |
(FOOTSWITCH JACK) |
2 |
033329 |
JACK PHONO 2 CND PNL MT |
J4,5 |
(REVERB JACKS) |
’63 Fender Reverb
|
|
CHASSIS ASSEMBLY (CONT) |
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|
|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
||
1 |
025718 |
JEWEL #20 PILOT LITE |
(RED) |
|
|
3 |
036678 |
KNOB VINTAGE DARK BROWN |
(BROWN CABINET) |
||
3 |
041263 |
KNOB VINTAGE CREAM |
(BLACK, BLOND CABINET) |
||
1 |
031625 |
NUT HOLDER PILOT LIGHT 1/16-27 |
|
|
|
2 |
022004 |
NUT KEPS #8-32 ZINC |
(POWER XFMR MOUNT) |
||
1 |
047598 |
PANEL FRONT 63 TUBE RVRB BROWN |
(BROWN, BLOND CABINET) |
||
1 |
047599 |
PANEL FRONT 63 TUBE RVRB BLACK |
(BLACK CABINET) |
||
1 |
021642 |
PILOT LIGHT #T47 |
|
|
|
12 |
031184 |
SCRW M 6-32X1/4 PHPSBLX |
(PCB MOUNT) |
||
2 |
026553 |
SCRW M 8-32X3/8 PPHP BLX |
(POWER XFMR MOUNT) |
||
12 |
038900 |
SCRW TF 6-32X3/8 PHP ZI |
|
|
|
6 |
031073 |
STANDOFF 6-32X3/8 RND AL |
(PCB MOUNT) |
||
1 |
036570 |
SWITCH TOGGLE DPST W/ NUTS |
S1 |
(POWER SWITCH) |
|
1 |
023531 |
TUBE 12AT7 |
V1 |
|
|
1 |
023564 |
TUBE 6V6GTA STR391A |
V2 |
|
|
1 |
013341 |
TUBE 7025/12AX7 |
V3 |
|
|
1 |
020424 |
TUBE RING UNIVERSAL (277H-2) |
(@V2) |
|
|
2 |
036598 |
TUBE SHIELD |
(@V1,3) |
|
|
1 |
023580 |
TUBE SOCKET 8 PIN |
XV2 |
|
|
2 |
023606 |
TUBE SOCKET 9 PIN |
SV1,3 |
|
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2 |
047950 |
WASHER FIBER FLAT RCA |
@J4,5 |
|
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2 |
047949 |
WASHER FIBER SHOULDER RCA |
(@J4,5) |
|
|
1 |
9904300920 |
WASHER FLAT .482X.709 NI |
(@ POWER SWITCH) |
||
3 |
027520 |
WSHR FLAT .380X.630 FIBER |
(@J1,2,3) |
|
|
3 |
026401 |
WSHR SHLDR FIB 3/8X5/8 |
(@J1,2,3) |
|
|
1 |
047609 |
XFMR POWER 120V DOMESTIC |
T1 |
(120V ONLY) |
|
1 |
047610 |
XFMR POWER EXPORT |
T1 |
(100/110/120/220/230/240V) |
|
1 |
04605 |
XFMR REVERB DRIVER OUTPUT |
T2 |
|
|
|
|
CABINET ASSEMBLY |
|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
1 |
047606 |
BRACKET “L” REVERB HOLD DOWN |
|
1 |
047591 |
CAB ASSY 63 REVERB BROWN/TAN |
(BROWN CABINET, TAN GRILE) |
1 |
037003 |
CAB ASSY 63 REVERB BLOND/OXBLD |
(BLOND CABINET, OXBLOOD GRILLE) |
1 |
047590 |
CAB ASSY 63 REVERB BLACK/SILVER |
BLACK CABINET, SILVER GRILLE |
1 |
047625 |
BACK ASSY 63 REVERB BLACK |
(BACKBOARD) |
1 |
047638 |
BACK ASSY 63 REVERB BLOND |
(BACKBOARD) |
1 |
047640 |
BACK ASSY 63 REVERB BROWN |
(BACKBOARD) |
1 |
047816 |
CABLE REVERB 350MM |
|
1 |
047639 |
GRILLE ASSY 63 REVERB TAN |
(USED ON BROWN CABINET) |
1 |
047637 |
GRILLE ASSY 63 REVERB OXBLOOD |
(USED ON BLOND CABINET) |
1 |
047627 |
GRILLE ASSY 63 REVERB SILVER |
(USED ON BLACK CABINET) |
1 |
037790 |
HANDLE 9.25” BLACK RIBBED |
(USED ON BLACK CABINET) |
1 |
036129 |
HANDLE 9” LEATHER BROWN |
(ON BROWN & BLOND CAB) |
2 |
036478 |
HANDLE CAP NI |
(@ HANDLE, BLACK CABINET) |
1 |
036795 |
NAMEPLATE 62 FENDER |
(BROWN, BLOND CABINET) |
1 |
023192 |
NAMEPLATE FENDER 65 TWIN |
(BLACK CABINET) |
4 |
022004 |
NUT KEPS #8-32 ZINC |
(@GRILLE, REVERB MOUNT) |
2 |
025819 |
NUT KEPS 10-32 ZINC |
(CHASSIS MOUNT) |
1 |
047603 |
PANEL REAR 63 REVERB BRN TEXT |
(@ BROWN, BLOND CABINET) |
1 |
048462 |
PANEL REAR 63 REVERB BLK TEXXXT |
(BLACK CABINET) |
|
036650 |
PIN ESCUTCHEON #16X3/8 NI |
(PANEL REAR, MOUNT) |
1 |
047604 |
REVERB UNIT 8 OHM 4AB3C1C VERT |
|
4 |
026419 |
SCRW 8/32X1 PHP STL NI |
(LEATHER HANDLE MOUNT) |
2 |
036619 |
SCRW M 10-32X1-1/2 THP NI |
(CHASSIS MOUNT) |
2 |
022244 |
SCRW M 8-32/X-1/2 FHP BLK |
(@ GRILLE, REVERB MOUNT) |
2 |
029828 |
SCRW PB 8X3/4 PHP ZI |
(@ HOLD DOWN BRACKET) |
8 |
037952 |
SCRW SMA #6X1 OHP NI |
(GRILLE/BACK MOUNT) |
4 |
037210 |
SCRW MSMA 2X3/8 OHP NI |
(62 VINTAGE LOGO MOUNT) |
3 |
037985 |
SCRW SMA 2X3//8 PHP BLX |
(65 LOGO MOUNT) |
|
|
’63 Fender Reverb |
|
|
|
CABINET ASSEMBLY (CONT) |
|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
4 |
047784 |
SPRING ANCHOR |
(SPRING OVER SCREW) |
4 |
047607 |
SPRING EXTENSION |
(FROM ANCHOR TO PAN) |
8 |
037215 |
WSHR C’SNK #6 NI |
(GRILLE/BACK MOUNT) |
4 |
026459 |
WSHR FLAT 6X3/8 ZI |
|
|
|
FOOTSWITCH ASSEMBLY |
|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
1 |
048458 |
FOOTSWITCH 1BTN VINTAGE SHIELD |
(COMPLETE FOOTSWITCH) |
1 |
021691 |
BUSHIUNG SR .500X.100X7/16 BLK |
|
1 |
022657 |
COVER CUP SINGLE FT SW.ASSY |
|
1 |
028915 |
PLUG PHONE RTANG SHIELDED |
|
1 |
024042 |
SWITCH SPST PUSH BUTTON |
|
12ft |
023861 |
WIRE BLACK STRANDED 2 COND PLA |
|
|
|
MISCELLANEOUS |
|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
1 |
047980 |
MANUAL OWNERS 63 FENDER REVERB |
|
1 |
047593 |
SCHEM REDUC 63 FENDER REVERB |
(WITH SERVICE DIAGRAM) |
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