ACOUSTASONIC SFX

ACOUSTASONIC SFX (This is the model name for warranty claims)

p/n 022-1301-000 (120V)

SERVICE MANUAL
SERVICE MANUAL APRIL 1998

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.

CONTENTS: 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!
Notices
Specifications
Parts lists: A coded naming convention is used in the description of certain parts. The codes and what they mean are as follows:
Preamp top PCB assy
Preamp btm PCB assy CAPACITOR CODES HARDWARE CODES
Pwr amp PCB assy
Chassis assembly CAP AE = Aluminum Electrolytic BLX = Black Oxide
Cabinet assembly CAP CA = Ceramic Axial CR = Chrome Plated
Unit assembly CAP CD = Ceramic Disk HWH = Hex Washer Head
Schematics CAP MPF = Metalized Polyester Film M = Machine Screw
Service diagrams CAP MY = Mylar NI = Nickel Plated
CAP PFF = Polyester Film/Foil OHP = Oval Head Phillips
PB = Particle Board
RESISTOR CODES 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

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

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PARTS LIST
SPECIFICATIONS
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY

Product Release No.: PR 370 (This is not a model number) PREAMP TOP
PRINTED CIRCUIT BOARD ASSEMBLY
Part Number: 120V Version : 22-1301
240V Aust : 22-1331 QTY PART # DESCRIPTION REFERENCE DESIGNATION
230V UK : 22-1341 1 033605 CAP AE RDL .15uF 50V 20% C4
230V : 22-1361 3 028458 CAP AE RDL 1uF 50V 20% C5 C41 C43
100V : 22-1371 5 028459 CAP AE RDL 2.2uF 50V 20% C6 C9 C12 C35 C37
10 028467 CAP AE RDL 22uF 50V 20% C13 C17-18 C21 C33-34 C39-40 C47 C54
Preamp Section 1 028485 CAP AE RDL 470uF 16V 20% C27

10 034788 CAP CR .1uF 50V 20% .2” LS C28 C60-68

Input impedance: 10 MΩ (Inst), 3.6kΩ (Mic), 36.4kΩ (Line/Inst) 2 051445 CAP CD 22pF 500V 5% C3 C15
2 051408 CAP CD 47pF 500V 5% C36 C38
Tone Controls: Treble: +/- 15dB @ 15kHz(Inst), +/- 15dB @ 15kHz (Mic/Line/Inst) 1 051457 CAP CD 100pF 500V 10% C44
Mid: +/- 12dB @ 1kHz (Inst) 1 051406 CAP CD 220pF 500V 10% C42
Bass: +/- 12dB @ 100Hz (Inst), +/- 12dB @ 50Hz (Mic/Line/Inst) 1 051407 CAP CD 390pF 500V 10% C8
4 051459 CAP CD 560pF 500V 10% C1-2 C29-30
Feedback Notch: -10dB from 80Hz to 700Hz (Instrument Channel)
1 027278 CAP MPF .1uF 63V 10% C14
3 033477 CAP MPF .68uF 63V 10% C22-23 C25
String Dynamics: 0 to -15dB @ 6.3kHz (Instrument Channel) 1 033579 CAP PFF RDL .0015uF 100V 10% C51
2 030935 CAP PFF RDL .0018uF 50V 5% C10-11
Phantom Power: +15VDC (Mic) 2 033582 CAP PFF RDL .0039uF 100V 10% C50 C53
2 033583 CAP PFF RDL .0047uF 100V 10% C48-49
Power Amplifier Section 1 033586 CAP PFF RDL .0068uF 100V 10% C7
4 033590 CAP PFF RDL .022uF 100V 10% C16 C19-20 C52
4 033591 CAP PFF RDL .033uF 100V 10% C31-32 C45-46
Power output: 80 Watts/channel (160W RMS total) into 8 ohms @ <.07%
THD, both channels driven 6 027941 CONTROL SNAPIN 50k B TAPER R5 R8-10 R54 R95
1 031089 CONTROL SNAPIN 100k 10C DUAL R43
Sensitivity: 1.51V (both channels) 1 039053 CONTROL SNAPIN 1M 30A TAPER R27
2 053563 CONTROL SNAPIN 50k 30C DUAL R70 R75
Power Requirements: 120V Version: 120 VAC 60 Hz, 450W
230V : 230 VAC 50 Hz, 450W 2 006260 DIODE 1N4448 SIGNAL LL D1-2
2 031017 DIODE ZEN 1N5223B 2.7V 5% LL D17-18
Speaker Complement: One 8 Ohm Special Design 8" Speaker (p/n 051016) 2 016795 IC DUAL OP AMP TL072 U1 U4
One 8 Ohm Special Design 10" Speaker (p/n 029753) 1 027404 IC CA3080AE OTA U3
One Piezo Horn (p/n 049260) 10 031611 IC DUAL OP AMP PC4560 U2 U5-13

Dimensions: Height: 29.5" (73 cm) 2 053450 JACK 1/4 PCB STEREO R/A J1 J4
Width: 17.5" (44 cm)
Depth: 13" (33 cm) 2 049948 LED, RED LONG LEAD LUMEX D3 D12
2 036178 SPACER LED .5x .1 BRN D3 D12
1 024937 RES CF 1/4W 5% 10 ohm LL R114
Weight: 62 lbs. (28.2 kg) 1 024945 RES CF 1/4W 5% 33 ohm LL R62
7 024952 RES CF 1/4W 5% 100 ohm LL R17 R30-31 R33 R66 R69 R111

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PARTS LIST
PARTS LIST

PREAMP BOTTOM
PREAMP TOP PRINTED CIRCUIT BOARD ASSEMBLY
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
QTY PART # DESCRIPTION REFERENCE DESIGNATION 1 037943 CAP AE RDL .33uF 50V 20% C81
5 024965 RES CF 1/4W 5% 1k LL R16 R23 R28 R35 R100 6 028459 CAP AE RDL 2.2uF 50V 20% C200-201 C209 C213-214 C217
5 024971 RES CF 1/4W 5% 2.2k LL R4 R7 R13 R26 R109 9 028467 CAP AE RDL 22uF 50V 20% C202-203 C208 C210 C212 C218-220 C223
3 024977 RES CF 1/4W 5% 4.7k LL R1 R32 R107 3 028471 CAP AE RDL 47uF 50V 20% C58-59 C73
1 028034 RES CF 1/4W 5% 5.1k LL R105 1 028474 CAP AE RDL 100uF 25V 20% C76
1 028492 CAP AE RDL 1000uF 16V 20% C74
28 024981 RES CF 1/4W 5% 10k LL R6 R14 R24 R37 R39 R41-42 R44-45 R47-49 2 028494 CAP AE RDL 1000uF 35V 20% C56-57
R51 R53 R64-65 R67-68 R80 R83 R86-92
R106 8 034788 CAP CR .1uF 50V 20% .2” LS C69-72 C75 C77-79
1 029539 RES CF 1/4W 5% 13k LL R99 1 051408 CAP CD 47pF 500V 10% C211
1 024985 RES CF 1/4W 5% 15k LL R102 4 051405 CAP CD 120pF 500V 5% C204-207
3 029006 RES CF 1/4W 5% 20k LL R15 R81 R85 1 051407 CAP CD 390pF 500V 10% C216
10 024987 RES CF 1/4W 5% 22k LL R18-21 R38 R40 R93-94 R98 R112
6 024993 RES CF 1/4W 5% 47k LL R71-73 R76-78 1 052003 CAP MPF .1uF 250V 10% C55
2 028990 RES CF 1/4W 5% 51k LL R46 R113
3 024994 RES CF 1/4W 5% 56k LL R52 R96-97 2 033580 CAP PFF RDL .0022uF 100V 10% C221-222
1 033586 CAP PFF RDL .0068uF 100V 10% C215
9 024997 RES CF 1/4W 5% 100k LL R11 R34 R36 R55-56 R58 R60 R101 R108
2 024999 RES CF 1/4W 5% 150k LL R12 R110 1 027940 CONTROL SNAPIN 50k 15A TAPER R210
1 025059 RES CF 1/4W 5% 220k LL R3 4 027941 CONTROL SNAPIN 50k B TAPER R217-219 R248
1 025828 RES CF 1/4W 5% 430k LL R22 1 031089 CONTROL SNAPIN 100k 10C DUAL R238
4 025065 RES CF 1/4W 5% 470k LL R29 R57 R74 R79
4 006260 DIODE 1N4448 SIGNAL LL D8-11
4 025069 RES CF 1/4W 5% 1M LL R50 R82 R84 R103 1 027329 DIODE ZEN 1N5228B 3.9V 5% LL D16
1 025079 RES CF 1/4W 5% 4.7M LL R25 7 064089 DIODE 1N4003 LL D4-7 D13-15
1 025084 RES CF 1/4W 5% 10M LL R2
2 025802 FSTN TAB MALE .250x.032 PCB MT P1 P3
1 015581 RES MF 1/4W 1% 9.53k LL R61 1 026000 FSTN TAB MALE .187x.032 PCB MT P2
1 016953 RES MF 1/4W 1% 1.78k LL R63 4 051094 FUSE CLIP, PCB 5mm (EXPT) F1-F2

1 026549 RES CF 1/2W 5% 1.5k LL R104 5 031611 IC DUAL OP AMP PC4560 U14-18
1 028861 RES CF 1/2W 5% 3.3k LL R119 1 013562 IC REGULATOR +15V MC7815CT U19
1 013564 IC REGULATOR -15V MC7915CT U20
2 028091 SWITCH PUSH SLFLK SHORT STROKE S1-2 1 041812 IC REGULATOR +5V MC7805CT U21
2 048451 BUTTON PUSH OFF WHITE S1-2 2 039420 SCRW M 4-40X3/8 PHP SS SEMS at U19-20
2 050849 HEATSINK PCB LEVEL at U19-20
1 027416 HDR .1 CTR 8 CKT SQ PIN P5 2 097360 NUT HEX 4-40 EX LOCK at U19-20
1 040987 CABLE RIBBON 10 CKT 3.75” PW4
1 053856 CABLE RIBBON 6 CKT 8” PW10 1 051019 XLR, FEMALE, RT ANGLE J3
2 053450 JACK STEREO R/A J2 J5
1 052096 PCB FAB ACST SFX PRE TOP 1 024956 RES CF 1/4W 5% 22O ohm LL R208

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 ACOUSTASONIC SFX ACOUSTASONIC SFX
PARTS LIST
PARTS LIST
PREAMP BOTTOM
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
POWER AMP
QTY PART # DESCRIPTION REFERENCE DESIGNATION PRINTED CIRCUIT BOARD ASSEMBLY
1 024963 RES CF 1/4W 5% 680 ohm LL R251
2 024965 RES CF 1/4W 5% 1k LL R228 R252
QTY PART # DESCRIPTION REFERENCE DESIGNATION
3 024971 RES CF 1/4W 5% 2.2k LL R209 R216 R222
4 028460 CAP AE RDL 4.7uF 50V 20% C101-102 C201-202
17 024981 RES CF 1/4W 5% 10k LL R212 R215 R224-225 R231-237 R239
1 028467 CAP AE RDL 22uF 50V 20% C5
R241-243 R245 R247
4 028471 CAP AE RDL 47uF 50V 20% C108-109 C208-209
1 029006 RES CF 1/4W 5% 20k LL R213
2 037182 CAP AE RDL 6800uF 63V 20% C3-4
2 024987 RES CF 1/4W 5% 22k LL R226-227
1 028990 RES CF 1/4W 5% 51k LL R240
4 034788 CAP CR .1uF 50V 20% .2” LS C106-107 C206-207
1 024994 RES CF 1/4W 5% 56k LL R246
4 051409 CAP CD 68pF 500V 5% C104-105 C204-205
3 024997 RES CF 1/4W 5% 100k LL R220 R229-230
1 024999 RES CF 1/4W 5% 150k LL R221
6 027278 CAP MPF .1uF 63V 10% C112-114 C212-214
2 025065 RES CF 1/4W 5% 470k LL R211 R223
1 052003 CAP MPF .1uF 250V 10% C2
2 025069 RES CF 1/4W 5% 1M LL R214 R244
1 053860 CAP MPF .1uF 250VAC 20% C1
4 031819 RES MF 1/4W 1% 1.82k LL R202-203 R206-207
4 031818 RES MF 1/4W 1% 18.2k LL R200-201 R204-205 CAP PFF RDL .0022uF 100V 10%
6 033580 C100 C110-111 C200 C210-211
2 029722 RES FILM 1W 5% 1k LL R250 R253
23 006260 DIODE 1N4448 SIGNAL LL D5 D100-106 D109-110 D113-114 D200-206
D209-210 D213-214
1 028091 SWITCH PUSH SLFLK SHORT STROKE S3 DIODE HV FDH-400 SWITCHING LL
4 025821 D107-108 D207-208
1 048451 BUTTON PUSH OFF WHITE S3 DIODE ZEN 1N5228B 3.9V 5% LL
4 027329 D115-116 D215-216
4 029045 DIODE 6A 400V 6A4 LEAD FORM D1-4
1 025751 XSTR NPN 2SC2362K/2SC2389STPS Q3
2 031635 DIODE ZEN 1N5240B 10V 5% LL D6-7
1 051447 XSTR PNP 2SB1236 Q1
4 064089 DIODE 1N4003 LL D111-112 D211-212
1 051448 XSTR NPN 2SD1857 Q2
12 025802 FSTN TAB MALE .250x.032 PCB MT P1-5 P7 P11-16
1 048914 CABLE RIBBON 8 CKT 7 IN PW5 FSTN TAB MALE .187x.032 PCB MT
1 026000 P6
2 051094 FUSE CLIP PCB 5mm (EXPT) F1
1 052098 PCB FAB ACST SFX PRE BTM
8 027638 SCRW TF 4-40X3/8 HWHS ZI .1”HD at Q108-111 Q208-211
5 032908 SCRW TF 6-32X3/8 PHP ZI at HEATSINK

4 038815 INSULATOR SILICONE TO-3P at Q110-111 Q210-211

1 053575 HEATSINK PLATE 160W AMPS
1 051418 THERMAL SENSOR PTC 100 DEG C RT1

4 051731 RES MF FUSE 1/4W 5% 1k LL R109-110 R209-210

6 036960 RES MF FUSE 1/4W 5% 47 ohm LL R123-125 R223-225

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PARTS LIST PARTS LIST

POWER AMP
PRINTED CIRCUIT BOARD ASSEMBLY (CONT) CHASSIS ASSEMBLY

QTY PART # DESCRIPTION REFERENCE DESIGNATION QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 027750 RES MF FUSE 1/4W 5% 100ohm LL R111-112 R211-212 052091 CHASSIS ASSY, ACOUSTASONIC SFX DOM 120V
4 024937 RES CF 1/4W 5% 10 ohm LL R119-120 R219-220 052092 CHASSIS ASSY, ACOUSTASONIC SFX EUR 230V
4 024942 RES CF 1/4W 5% 22 ohm LL R104-105 R204-205 052093 CHASSIS ASSY, ACOUSTASONIC SFX UK 230V
2 024947 RES CF 1/4W 5% 47 ohm LL R5-6 052094 CHASSIS ASSY, ACOUSTASONIC SFX AUST 240V
12 024965 RES CF 1/4W 5% 1k LL R100 R102-103 R107 R132-133 052095 CHASSIS ASSY, ACOUSTASONIC SFX JAP 100V
R200 R202-203 R207 R232-233
4 024971 RES CF 1/4W 5% 2.2k LL R113 R116 R213 R216 1 051950 CHASSIS, ACST SFX AMP
4 029455 RES CF 1/4W 5% 2.4k LL R114-115 R214-215 1 053402 PANEL, FRONT, ACST SFX AMP
4 024972 RES CF 1/4W 5% 2.7k LL R131 R134 R231 R234 1 053403 PANEL, REAR, ACST SFX AMP
2 024977 RES CF 1/4W 5% 4.7k LL R106 R206
1 024981 RES CF 1/4W 5% 10k LL R3 1 051897 XFMR PWR 160W 120V DOM 120V ONLY
4 024986 RES CF 1/4W 5% 18k LL R101 R108 R201 R208 1 051898 XFMR PWR 160W 230V ALL 230V/240V
1 029006 RES CF 1/4W 5% 20k LL R1 1 053405 XFMR PWR 160W 100V 100V ONLY
1 024993 RES CF 1/4W 5% 47k LL R4
1 024997 RES CF 1/4W 5% 100k LL R2 1 052097 PCB ASSY ACST SFX PREAMP TOP
4 026549 RES CF 1/2W 5% 1.5k LL R118 R121 R218 R221 1 052099 PCB ASSY ACST SFX PREAMP BTM
1 053408 PCB ASSY ACST SFX PWR AMP
4 037354 RES FILM 1W 5% 4.7k LL R117 R122 R217 R222 1 053567 PCB ASSY DSP ACST SFX
4 031628 RES MOX 2W 5% .22 ohm LL R128-129 R228-229
2 051417 RES MOX 2W 5% 22 ohm LL R130 R230 1 053885 FUSE QA 20mmX5mm 250V 5A UL/CSA 100V/120V UNITS ONLY
1 037845 RES WW 5W 10% 47 ohm R135 1 020795 FUSE QA 20mmx5mm 250v 2.5A 230V/240V UNITS ONLY
2 013112 FUSE TD 20mmx5mm 250v 1A ALL
2 014866 XSTR NPN MPSW92 TO-226AE Q104 Q204
2 014867 XSTR PNP MPSW42 (TO-92) Q105 Q205 5 051404 STANDOFF, NYLON BLACK @ DSP/pre PCB
2 016739 XSTR NPN 2N4401 TO-92 Q112 Q212 3 016440 STNDOFF RND AL 6-32x1x1/4 @ pwr amp PCB
4 016742 XSTR PNP 2N4403 TO-92 Q1-2 Q113 Q213 1 048974 HEATSINK EXTRUDED BXR200
6 025751 XSTR NPN 2SC2362K/2SC2389STPS Q100-102 Q200-202
2 025752 XSTR PNP 2SA1038STPS Q103 Q203 6 031184 SCRW M6-32x1/4 PHPS BLX ITLW pwr amp PCB mtg
2 051447 XSTR PNP 2SB1236 Q107 Q207 9 027636 SCRW TF 8-32x5/8 HWH BLX @ HTSNK/XFMR
2 051448 XSTR NPN 2SD1857 Q106 Q206 6 017716 SCRW 8-32x1/2 PHP BLX @ HEATSINK
2 028759 XSTR PNP 2SA1306A TO-220P Q109 Q209 2 051155 SCRW #4 HI LO @ XLR
2 028760 XSTR PNP 2SC4793/2SC3298B Q108 Q208 1 038900 SCRW TF 6-32X1/4 PHP ZI at ground lug
2 051724 XSTR, PNP POWER MJW21191 TO-247 Q111 Q211
2 051725 XSTR NPN POWER MJW21192 TO-247 Q110 Q210 16 051017 KNOB ROTARY BRN/WHT @ CONTROLS
1 053615 KNOB ROTARY SS W/ ARROW @ DSP
1 027413 HDR .1 CTR 6 CKT SQ PIN P10 1 039236 SWITCH ROCKER DPST PSEUDO-IEC 100V/120V UNITS ONLY
1 040582 SWITCH DPST .250 TAB GLOBAL 230V/240V UNITS ONLY
1 053407 PCB FAB ACST SFX PWR AMP

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PARTS LIST PARTS LIST

CHASSIS ASSEMBLY (CONT)

UNIT ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 026541 CABLE ASSY PWR W/.250 TAB 120V 120V DOM UNITS ONLY QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 038602 CABLE ASSY PWR AUST .250 TAB 240V AUST UNITS ONLY 1 051642 CAB ASSY, ACST SFX AMP
1 040993 CABLE ASSY PWR 5A U.K..250 TAB 230V UK UNITS ONLY 052091 CHS ASSY ACST SFX AMP 120V DOM
1 033331 CABLE ASSY PWR 220/240v 230V EUR UNITS ONLY 052092 CHS ASSY ACST SFX AMP 230V EUR
1 048463 CABLE ASSY PWR .250 100v 100V JAP UNITS ONLY 052093 CHS ASSY ACST SFX AMP 230V U.K.
052094 CHS ASSY ACST SFX AMP 240V AUST.
1 026038 BUSHING SR .625x.062x37/64 BLK for PWR CABLE 100V/120V 052095 CHS ASSY ACST SFX AMP 100V JAP
1 010401 BUSHING SR .625x.125x37/64 WHT for PWR CABLE 230V/240V
1 012560 BUSHING SNAP 5/8x27/32 BLK for spkr cables 2 052000 GRILLE, SIDE ACST SFX AMP
1 052001 GRILLE, REAR ACST SFX AMP

.01 036650 PIN ESCUTCHEON #18x3/8 NI plate pin (LB)

14 016627 SCRW SMA 8x3/4 OHP BLX @ grilles
CABINET ASSEMBLY 6 053483 SCRW TF 8-32X1-3/8 #6 OHP NI SEMS CHS
8 026577 SCRW M 10-32X1 PHP BLX @ SPEAKERS
QTY PART # DESCRIPTION REFERENCE DESIGNATION 4 9904101110 SCREW PB 8x5/8 PHP BLX @ HORN
0.5 036797 CLOTH GRILLE TAN/BRN estimated qty 4 037210 SCREW SMA 2x3/8 OHP NI @ LOGO
0.3 029085 VELCRO STRIP LOOP 1.5"wd BLK at GRILLES 14 029527 WSHR FNSH 8-5/8 FLNGD BLX WX @ grilles
0.3 029086 VELCRO STRIP HOOK 1.5"wd BLK 12 051098 TAPE VINYL NITRITE W/ ADHESIVE (FT) grille edge
1.7 036796 TOLEX BROWN COVERING
0.1 040005 TAPE ALUM 7"x60YDS FOIL SHIELD 1 051016 SPEAKER 8" 8 OHM HI FI ACST FRONT
1 029753 SPEAKER 10" 8 ohm PRCR/10WDG SIDE
1 037121 HANDLE STRAP BRN 1 049260 HORN CERAMIC PIEZO KXR 60
1 032524 INSERT HANDLE
2 025395 HANDLE CAP 1 HOLE NI 1 036795 NAMEPLATE 62 FENDER
1 051871 NAMEPLATE ACOUSTASONIC AMP
2 022244 SCRW M 10-32x1-1/8 OHP NI at handle caps
4 026571 SCRW SMAB 8X5/8 THP NI at corners
4 026625 SCRW WOOD 8x1 FH at feet
10 021972 NUT T 10-32x3/4 STR 3 PRNG BLX

4 026566 CORNER 2 HOLE w/TAB NI at bottom, front of cab

4 019275 INSET GLIDE CUSHION 1.27 DIA. at feet
4 019276 GLIDE CAB 1.24X.335 NI feet