TWIN (PRO-TUBE) AMP
p/n 021-5700-000 (120V)
SERVICE MANUAL
CONTENTS:
Notices Specifications Service notes Parts lists:
PCB assy-main PCB assy rear
panel
Chassis assy Cabinet assy End item
Drawings
Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258
TWIN (PRO-TUBE) AMP
(This is the model name for warranty claims)
SERVICE MANUAL
JUNE 2001
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 |
TWIN (PRO-TUBE) AMP
SPECIFICATIONS
Product Release No.: |
PR 449 (This is not a model number) |
|||
Part Number: |
120V |
Version |
: |
21-5700 |
|
240V |
Aus |
: |
21-5730 |
|
230V |
UK |
: |
21-5740 |
|
230V |
Eur |
: |
21-5760 |
|
100V |
|
: |
21-5770 |
Power Requirements: |
360W |
|
|
|
Power Amp Section:
Power Output: 100 Watts RMS (High Output) 25 W RMS (1/4 Output)
1kHz sine wave into 4Ω @<5% THD (Presence @ “1”)
Input impedance: |
|
1MΩ |
|
Tubes: |
|
Four 6L6GC (P/N 053980) |
|
|
|
Two 12AX7A (P/N 023572) |
|
|
|
Five 12AX7WA (P/N 013341) |
|
|
|
One 12AT7 (P/N 023531) |
|
Fuses: |
F200: |
T4A 250V (100V, 120V units) |
|
|
F201: |
T2A 250V (230V, 240V units) |
|
|
T5A 250V (Internal filament fuse on 230V, 240V units) |
||
|
F1 & F2: |
T100mA 250V (all units) |
|
Speaker Complement: |
Two 8Ω Fender 12" (P/N 037617) |
||
Footswitch: |
|
Four-Button: Channel, Effects, Reverb, Tremolo (P/N 057025) |
|
Dimensions: |
|
Height:19 7/8" |
(50.7 cm) |
|
|
Width: 26 3/8" |
(67.3 cm) |
|
|
Depth: 12 27/32" |
(32.8 cm) |
Weight: |
|
80 lbs. |
(36.3 kg) |
Product specifications are subject to change without notice
TWIN (PRO-TUBE) AMP
SERVICE NOTES
1.CHASSIS REMOVAL is accomplished by first removing eight (8) screws from the top, and one (1) screw from each side of the cabinet; disconnect reverb and speaker wires, then slide the chassis toward the rear.
2.TUBE CHART:
3.OUTPUT TUBE BIAS & BALANCE ADJUSTMENTS
A.Warm up the amp for 2 minutes with STAND BY OFF and the OUTPUT POWER set to FULL. Set SPEED and INTENSITY TO “1” and make sure TREMOLO is OFF. Flip the STAND BY switch to the UP position.
B.Remove the bias controls cover box.
C.Set BIAS: with a DC voltmeter measure VDC between GND and V9&V10 test points. Adjust BIAS for .06 VDC (60mVDC).
D.Set BALANCE: measure the VDC between V9&V10, and V11&V12 test points. Adjust BALANCE for zero (0) VDC.
E.Replace the bias controls cover box.
TWIN (PRO-TUBE) AMP
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
PRINTED CIRCUIT BOARD ASSEMBLY – MAIN
|
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
|
|
REF |
0057014000 |
SVC. DIA., COMB. PRO-TUBE AMPS |
|
|
|
|
|
|
|
|
|
1 |
0057015000 |
PCB FAB MAIN, PRO-TUBE AMPS |
|
|
|
2 |
0038690001 |
CAP AE AX 1.0uF 100V 20% |
C17 C37 |
|
|
4 |
0025960001 |
CAP AE AX 22uF 16V 20% |
C8 C29 C34 C111 |
|
|
3 |
0024819000 |
CAP AE AX 22uF 500V +50%-10% |
C203 C206-207 |
|
|
1 |
0038693001 |
CAP AE AX 47uF 16V 20% |
C1 |
|
|
4 |
0024820000 |
CAP AE AX 47uF 350V 20% |
C201-202 C204-205 |
|
|
2 |
0028494000 |
CAP AE RDL 1000uF 35V 20% |
C212-213 |
|
|
2 |
0031040000 |
CAP AE RDL 100uF 100V 20% |
C208-209 |
|
|
2 |
0028482003 |
CAP AE RDL 220uF 50V 20% |
C210-211 |
|
|
2 |
0036954003 |
CAP AE RDL 22uF 63V 20% |
C33 C216 |
|
|
1 |
0020883002 |
CAP CD 10pF 1000V 10% |
C31 |
|
|
2 |
0051408003 |
CAP CD 47pF 500V 5% |
C7 C101 |
|
|
1 |
0069724002 |
CAP CD 100pF 1000V 10% |
C105 |
|
|
1 |
0051405003 |
CAP CD 120pF 500V 5% |
C19 |
|
|
2 |
0020917002 |
CAP CD 250pF 1000V 10% |
C4 C22 |
|
|
1 |
0051458003 |
CAP CD 470pF 500V 10% |
C32 |
|
|
3 |
0025951002 |
CAP CD 750pF 1000V 10% |
C14 C16 C18 |
|
|
1 |
0025995002 |
CAP CD 8200pF 1000V 20% |
C200 |
|
|
2 |
0034788003 |
CAP CD .1uF 50V 20% .15” cut |
C224-225 |
|
|
3 |
0027272003 |
CAP MPF .047uF 63V 10% |
C218 C220 C223 |
|
|
1 |
0027280003 |
CAP MPF .15uF 63V 10% |
C217 |
|
|
2 |
0027281003 |
CAP MPF .22uF 63V 10% |
C215 C221 |
|
|
2 |
0027286003 |
CAP MPF .47uF 63V 10% |
C219 C222 |
|
|
1 |
0033477003 |
CAP MPF .68uF 63V 10% |
C11 |
|
|
3 |
0024823000 |
CAP MPF RDL .01uF 400V 10% |
C23 C103 C110 |
|
|
6 |
0024833000 |
CAP MPF RDL .022uF 400V 10% |
C3 C9 C12 C21 C108-109 |
|
|
10 |
0024845000 |
CAP MPF RDL .047uF 400V 10% |
C2 C6 C10 C13 C15 C24-25 C30 C116-117 |
|
|
3 |
0024853000 |
CAP MPF RDL .1uF 250V 10% |
C100 C102 C104 |
|
|
7 |
0024854000 |
CAP MPF RDL .1uF 400V 10% |
C5 C20 C36 C112-115 |
|
|
2 |
0024855000 |
CAP MPF RDL .1uF 630V 10% |
C106-107 |
|
|
1 |
0024876000 |
CAP MPF RDL .68uF 250V 10% |
C27 |
|
|
1 |
0037040002 |
CAP PFF .0033uF 400V 10% |
C35 |
|
|
1 |
0037600000 |
CONTROL SNAPIN 100k B TAPER |
R73 Reverb |
|
|
2 |
0041507000 |
CONTROL SNAPIN 1M 10A TAPER |
R12 R37 Ch1volume Ch2volume |
|
|
3 |
0047540000 |
CONTROL SNAPIN 250k 15A TAPER |
R10 R17 R35 Ch1bass Gain Ch2bass |
|
|
2 |
0037597000 |
CONTROL SNAPIN 250k 30A TAPER |
R9 R34 Ch1treble Ch2treble |
|
|
1 |
0041511000 |
CONTROL SNAPIN 250k B DUAL |
R148 Intensity |
|
|
1 |
0047031000 |
CONTROL SNAPIN 25k 30C TAPER |
R109 Presence |
|
|
2 |
0041510000 |
CONTROL SNAPIN 25k B TAPER |
R11 R36 Ch1mid Ch2mid |
|
|
1 |
0037601000 |
CONTROL SNAPIN 3M 10C TAPER |
R141 Speed |
|
|
16 |
0026730001 |
DIODE 1N4006 800V 1A |
D100-101 D200-207 D210-215 |
|
TWIN (PRO-TUBE) AMP
PRINTED CIRCUIT BOARD ASSEMBLY – MAIN (cont)
QTY |
PART # |
DESCRIPTION |
REFERENCE DESIGNATION |
|
18 |
0006260001 |
DIODE 1N4448 SIGNAL |
D1 D4 D6-7 D114 D223 D226 D228-229 D231 |
- |
|
|
|
237 D239-240 |
|
2 |
0029690001 |
DIODE HV 3kV 200mA |
D102-103 |
|
1 |
0031017001 |
DIODE ZEN 1N5223B 2.7V 5% LL |
D224 |
|
3 |
0031635001 |
DIODE ZEN 1N5240B 10V 5% LL |
D5 D227 D238 |
|
6 |
0031019001 |
DIODE ZEN 1N5245B 15V 5% LL |
D2-3 D8-9 D112-113 |
|
2 |
0028119060 |
DIODE ZEN 1N5353B 16V 5W 5% |
D216-217 |
|
2 |
0041811060 |
DIODE ZEN 1N5368B 47V 5W 5% |
D208-209 |
|
6 |
0026000001 |
FSTN TAB MALE PCB MT .187X.032 |
P2-5 P216-217 |
|
20 |
0025802000 |
FSTN TAB MALE .250x.032 PCB MT |
P100-101 P200-215 P218-219 |
|
4 |
0031611000 |
IC OP-AMP DUAL PC4560 |
U1-4 |
|
2 |
0041261000 |
IC VOLT REF LM4040DIZ-10.0 |
U5-6 |
|
1 |
0037117000 |
JACK PCB MONO CLOSED CKT |
J1 Input |
|
1 |
0025933000 |
JACK PHONO DUAL PC MTG |
J2 Reverb |
|
1 |
0028039000 |
LED RED 5x5mm SLB-55VR3 |
D225 |
|
1 |
0030754000 |
LED RED T-1 3mm DIFFUSED |
D230 |
|
1 |
0036178000 |
SPACER LED .5x.1 BRN |
@D230 |
|
3 |
0036613000 |
RELAY DPDT DIP 24 VOLT 8.3mA |
K1-3 |
|
9 |
0025116001 |
RES CF 1/2W 5% 100k LL |
R3 R13 R20 R31 R52 R61 R71 R77 R111 |
|
2 |
0026368001 |
RES CF 1/2W 5% 100ohm LL |
R211-212 |
|
1 |
0025117001 |
RES CF 1/2W 5% 220k LL |
R202 |
|
1 |
0025113001 |
RES CF 1/2W 5% 10k LL |
R104 |
|
1 |
0025834001 |
RES CF 1/2W 5% 150k LL |
R146 |
|
2 |
0036957001 |
RES CF 1/2W 5% 470k LL |
R26 R144 |
|
1 |
0025115001 |
RES CF 1/2W 5% 82k LL |
R110 |
|
12 |
0024969001 |
RES CF 1/4W 5% 1.5k LL |
R4 R14 R21 R43 R51 R62 R68-69 R114-115 |
|
8 |
0024997001 |
RES CF 1/4W 5% 100k LL |
R215 R238 |
|
R8 R147 R208 R220 R226 R230 R243 R249 |
||||
11 |
0024981001 |
RES CF 1/4W 5% 10k LL |
R19 R25 R30 R41 R50 R60 R143 R207 R231- |
|
|
|
|
233 |
|
1 |
0024937001 |
RES CF 1/4W 5% 10ohm LL |
R250 |
|
1 |
0024999001 |
RES CF 1/4W 5% 150k LL |
R100 |
|
5 |
0024985001 |
RES CF 1/4W 5% 15k LL |
R101 R155 R224 R229 R248 |
|
1 |
0024955001 |
RES CF 1/4W 5% 180ohm LL |
R227 |
|
1 |
0024986001 |
RES CF 1/4W 5% 18k LL |
R27 |
|
1 |
0024965001 |
RES CF 1/4W 5% 1k LL |
R81 |
|
15 |
0025069001 |
RES CF 1/4W 5% 1M LL |
R1 R6 R15 R18 R38 R40 R46 R49 R63 R78 R82 |
|
|
|
|
R103 R106 R142 R153 |
|
8 |
0025059001 |
RES CF 1/4W 5% 220k LL |
R5 R16 R24 R53 R67 R75 R112-113 |
|
2 |
0024987001 |
RES CF 1/4W 5% 22k LL |
R39 R79 |
|
1 |
0025077001 |
RES CF 1/4W 5% 3.3M LL |
R76 |
|
4 |
0024989001 |
RES CF 1/4W 5% 33k LL |
R2 R33 R45 R102 |
|
2 |
0024977001 |
RES CF 1/4W 5% 4.7k LL |
R107 R145 |
|
1 |
0025079001 |
RES CF 1/4W 5% 4.7M LL |
R70 |
|
12 |
0025065001 |
RES CF 1/4W 5% 470k LL |
R7 R23 R28-29 R64-65 R74 R214 R223 R234 |
|
|
|
|
R236 R246 |
|
1 |
0024961001 |
RES CF 1/4W 5% 470ohm LL |
R105 |
|
3 |
0024993001 |
RES CF 1/4W 5% 47k LL |
R22 R42 R44 |
|
1 |
0024962001 |
RES CF 1/4W 5% 560ohm LL |
R237 |
|
2 |
0028948001 |
RES CF 1/4W 5% 6.2k LL |
R80 R235 |
|
4 |
0024979001 |
RES CF 1/4W 5% 6.8k LL |
R154 R225 R228 R247 |
|
2 |
0025068001 |
RES CF 1/4W 5% 820k LL |
R222 R245 |
|
2 |
0024964001 |
RES CF 1/4W 5% 820ohm LL |
R32 R72 |
|
2 |
0029613001 |
RES CF 1/4W 5% 91k LL |
R108 R140 |
|
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