Fender Acoustasonic SFX User manual

ACOUSTASONIC SFX
p/n 022-1301-000 (120V)
SERVICE MANUAL
CONTENTS:
Notices
Specifications
Parts lists:
Preamp top PCB assy
Preamp btm PCB assy
Pwr amp PCB assy
Chassis assembly
Cabinet assembly
Unit assembly
Schematics
Service diagrams
Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258
ACOUSTASONIC SFX
(This is the model name for warranty claims)
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.
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
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
1

ACOUSTASONIC SFX
SPECIFICATIONS
Product Release No.: PR 370 (This is not a model number)
Part Number: 120V Version : 22-1301
240V Aust : 22-1331
230V UK : 22-1341
230V : 22-1361
100V : 22-1371
Preamp Section
Input impedance: 10 MΩ(Inst), 3.6kΩ(Mic), 36.4kΩ(Line/Inst)
Tone Controls: Treble: +/- 15dB @ 15kHz(Inst), +/- 15dB @ 15kHz (Mic/Line/Inst)
Mid: +/- 12dB @ 1kHz (Inst)
Bass: +/- 12dB @ 100Hz (Inst), +/- 12dB @ 50Hz (Mic/Line/Inst)
Feedback Notch: -10dB from 80Hz to 700Hz (Instrument Channel)
String Dynamics: 0 to -15dB @ 6.3kHz (Instrument Channel)
Phantom Power: +15VDC (Mic)
Power Amplifier Section
Power output: 80 Watts/channel (160W RMS total) into 8 ohms @ <.07%
THD, both channels driven
Sensitivity: 1.51V (both channels)
Power Requirements: 120V Version: 120 VAC 60 Hz, 450W
230V : 230 VAC 50 Hz, 450W
Speaker Complement: One 8 Ohm Special Design 8" Speaker (p/n 051016)
One 8 Ohm Special Design 10" Speaker (p/n 029753)
One Piezo Horn (p/n 049260)
Dimensions: Height: 29.5" (73 cm)
Width: 17.5" (44 cm)
Depth: 13" (33 cm)
Weight: 62 lbs. (28.2 kg)
ACOUSTASONIC SFX
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
PREAMP TOP
PRINTED CIRCUIT BOARD ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 033605 CAP AE RDL .15uF 50V 20% C4
3 028458 CAP AE RDL 1uF 50V 20% C5 C41 C43
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
1 028485 CAP AE RDL 470uF 16V 20% C27
10 034788 CAP CR .1uF 50V 20% .2” LS C28 C60-68
2 051445 CAP CD 22pF 500V 5% C3 C15
2 051408 CAP CD 47pF 500V 5% C36 C38
1 051457 CAP CD 100pF 500V 10% C44
1 051406 CAP CD 220pF 500V 10% C42
1 051407 CAP CD 390pF 500V 10% C8
4 051459 CAP CD 560pF 500V 10% C1-2 C29-30
1 027278 CAP MPF .1uF 63V 10% C14
3 033477 CAP MPF .68uF 63V 10% C22-23 C25
1 033579 CAP PFF RDL .0015uF 100V 10% C51
2 030935 CAP PFF RDL .0018uF 50V 5% C10-11
2 033582 CAP PFF RDL .0039uF 100V 10% C50 C53
2 033583 CAP PFF RDL .0047uF 100V 10% C48-49
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
6 027941 CONTROL SNAPIN 50k B TAPER R5 R8-10 R54 R95
1 031089 CONTROL SNAPIN 100k 10C DUAL R43
1 039053 CONTROL SNAPIN 1M 30A TAPER R27
2 053563 CONTROL SNAPIN 50k 30C DUAL R70 R75
2 006260 DIODE 1N4448 SIGNAL LL D1-2
2 031017 DIODE ZEN 1N5223B 2.7V 5% LL D17-18
2 016795 IC DUAL OP AMP TL072 U1 U4
1 027404 IC CA3080AE OTA U3
10 031611 IC DUAL OP AMP PC4560 U2 U5-13
2 053450 JACK 1/4 PCB STEREO R/A J1 J4
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
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
2

ACOUSTASONIC SFX
PARTS LIST
PREAMP TOP
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
5 024965 RES CF 1/4W 5% 1k LL R16 R23 R28 R35 R100
5 024971 RES CF 1/4W 5% 2.2k LL R4 R7 R13 R26 R109
3 024977 RES CF 1/4W 5% 4.7k LL R1 R32 R107
1 028034 RES CF 1/4W 5% 5.1k LL R105
28 024981 RES CF 1/4W 5% 10k LL R6 R14 R24 R37 R39 R41-42 R44-45 R47-49
R51 R53 R64-65 R67-68 R80 R83 R86-92
R106
1 029539 RES CF 1/4W 5% 13k LL R99
1 024985 RES CF 1/4W 5% 15k LL R102
3 029006 RES CF 1/4W 5% 20k LL R15 R81 R85
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
2 028990 RES CF 1/4W 5% 51k LL R46 R113
3 024994 RES CF 1/4W 5% 56k LL R52 R96-97
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 025059 RES CF 1/4W 5% 220k LL R3
1 025828 RES CF 1/4W 5% 430k LL R22
4 025065 RES CF 1/4W 5% 470k LL R29 R57 R74 R79
4 025069 RES CF 1/4W 5% 1M LL R50 R82 R84 R103
1 025079 RES CF 1/4W 5% 4.7M LL R25
1 025084 RES CF 1/4W 5% 10M LL R2
1 015581 RES MF 1/4W 1% 9.53k LL R61
1 016953 RES MF 1/4W 1% 1.78k LL R63
1 026549 RES CF 1/2W 5% 1.5k LL R104
1 028861 RES CF 1/2W 5% 3.3k LL R119
2 028091 SWITCH PUSH SLFLK SHORT STROKE S1-2
2 048451 BUTTON PUSH OFF WHITE S1-2
1 027416 HDR .1 CTR 8 CKT SQ PIN P5
1 040987 CABLE RIBBON 10 CKT 3.75” PW4
1 053856 CABLE RIBBON 6 CKT 8” PW10
1052096 PCB FAB ACST SFX PRE TOP
ACOUSTASONIC SFX
PARTS LIST
PREAMP BOTTOM
PRINTED CIRCUIT BOARD ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 037943 CAP AE RDL .33uF 50V 20% C81
6 028459 CAP AE RDL 2.2uF 50V 20% C200-201 C209 C213-214 C217
9 028467 CAP AE RDL 22uF 50V 20% C202-203 C208 C210 C212 C218-220 C223
3 028471 CAP AE RDL 47uF 50V 20% C58-59 C73
1 028474 CAP AE RDL 100uF 25V 20% C76
1 028492 CAP AE RDL 1000uF 16V 20% C74
2 028494 CAP AE RDL 1000uF 35V 20% C56-57
8 034788 CAP CR .1uF 50V 20% .2” LS C69-72 C75 C77-79
1 051408 CAP CD 47pF 500V 10% C211
4 051405 CAP CD 120pF 500V 5% C204-207
1 051407 CAP CD 390pF 500V 10% C216
1 052003 CAP MPF .1uF 250V 10% C55
2 033580 CAP PFF RDL .0022uF 100V 10% C221-222
1 033586 CAP PFF RDL .0068uF 100V 10% C215
1 027940 CONTROL SNAPIN 50k 15A TAPER R210
4 027941 CONTROL SNAPIN 50k B TAPER R217-219 R248
1 031089 CONTROL SNAPIN 100k 10C DUAL R238
4 006260 DIODE 1N4448 SIGNAL LL D8-11
1 027329 DIODE ZEN 1N5228B 3.9V 5% LL D16
7 064089 DIODE 1N4003 LL D4-7 D13-15
2 025802 FSTN TAB MALE .250x.032 PCB MT P1 P3
1 026000 FSTN TAB MALE .187x.032 PCB MT P2
4 051094 FUSE CLIP, PCB 5mm (EXPT) F1-F2
5 031611 IC DUAL OP AMP PC4560 U14-18
1 013562 IC REGULATOR +15V MC7815CT U19
1 013564 IC REGULATOR -15V MC7915CT U20
1 041812 IC REGULATOR +5V MC7805CT U21
2 039420 SCRW M 4-40X3/8 PHP SS SEMS at U19-20
2 050849 HEATSINK PCB LEVEL at U19-20
2 097360 NUT HEX 4-40 EX LOCK at U19-20
1 051019 XLR, FEMALE, RT ANGLE J3
2 053450 JACK STEREO R/A J2 J5
1 024956 RES CF 1/4W 5% 22O ohm LL R208
3

ACOUSTASONIC SFX
PARTS LIST
PREAMP BOTTOM
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 024963 RES CF 1/4W 5% 680 ohm LL R251
2 024965 RES CF 1/4W 5% 1k LL R228 R252
3 024971 RES CF 1/4W 5% 2.2k LL R209 R216 R222
17 024981 RES CF 1/4W 5% 10k LL R212 R215 R224-225 R231-237 R239
R241-243 R245 R247
1 029006 RES CF 1/4W 5% 20k LL R213
2 024987 RES CF 1/4W 5% 22k LL R226-227
1 028990 RES CF 1/4W 5% 51k LL R240
1 024994 RES CF 1/4W 5% 56k LL R246
3 024997 RES CF 1/4W 5% 100k LL R220 R229-230
1 024999 RES CF 1/4W 5% 150k LL R221
2 025065 RES CF 1/4W 5% 470k LL R211 R223
2 025069 RES CF 1/4W 5% 1M LL R214 R244
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
2 029722 RES FILM 1W 5% 1k LL R250 R253
1 028091 SWITCH PUSH SLFLK SHORT STROKE S3
1 048451 BUTTON PUSH OFF WHITE S3
1 025751 XSTR NPN 2SC2362K/2SC2389STPS Q3
1 051447 XSTR PNP 2SB1236 Q1
1 051448 XSTR NPN 2SD1857 Q2
1 048914 CABLE RIBBON 8 CKT 7 IN PW5
1052098 PCB FAB ACST SFX PRE BTM
ACOUSTASONIC SFX
PARTS LIST
POWER AMP
PRINTED CIRCUIT BOARD ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 028460 CAP AE RDL 4.7uF 50V 20% C101-102 C201-202
1 028467 CAP AE RDL 22uF 50V 20% C5
4 028471 CAP AE RDL 47uF 50V 20% C108-109 C208-209
2 037182 CAP AE RDL 6800uF 63V 20% C3-4
4 034788 CAP CR .1uF 50V 20% .2” LS C106-107 C206-207
4 051409 CAP CD 68pF 500V 5% C104-105 C204-205
6 027278 CAP MPF .1uF 63V 10% C112-114 C212-214
1 052003 CAP MPF .1uF 250V 10% C2
1 053860 CAP MPF .1uF 250VAC 20% C1
6 033580 CAP PFF RDL .0022uF 100V 10% C100 C110-111 C200 C210-211
23 006260 DIODE 1N4448 SIGNAL LL D5 D100-106 D109-110 D113-114 D200-206
D209-210 D213-214
4 025821 DIODE HV FDH-400 SWITCHING LL D107-108 D207-208
4 027329 DIODE ZEN 1N5228B 3.9V 5% LL D115-116 D215-216
4 029045 DIODE 6A 400V 6A4 LEAD FORM D1-4
2 031635 DIODE ZEN 1N5240B 10V 5% LL D6-7
4 064089 DIODE 1N4003 LL D111-112 D211-212
12 025802 FSTN TAB MALE .250x.032 PCB MT P1-5 P7 P11-16
1 026000 FSTN TAB MALE .187x.032 PCB MT P6
2 051094 FUSE CLIP PCB 5mm (EXPT) F1
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
4

ACOUSTASONIC SFX
PARTS LIST
POWER AMP
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 027750 RES MF FUSE 1/4W 5% 100ohm LL R111-112 R211-212
4 024937 RES CF 1/4W 5% 10 ohm LL R119-120 R219-220
4 024942 RES CF 1/4W 5% 22 ohm LL R104-105 R204-205
2 024947 RES CF 1/4W 5% 47 ohm LL R5-6
12 024965 RES CF 1/4W 5% 1k LL R100 R102-103 R107 R132-133
R200 R202-203 R207 R232-233
4 024971 RES CF 1/4W 5% 2.2k LL R113 R116 R213 R216
4 029455 RES CF 1/4W 5% 2.4k LL R114-115 R214-215
4 024972 RES CF 1/4W 5% 2.7k LL R131 R134 R231 R234
2 024977 RES CF 1/4W 5% 4.7k LL R106 R206
1 024981 RES CF 1/4W 5% 10k LL R3
4 024986 RES CF 1/4W 5% 18k LL R101 R108 R201 R208
1 029006 RES CF 1/4W 5% 20k LL R1
1 024993 RES CF 1/4W 5% 47k LL R4
1 024997 RES CF 1/4W 5% 100k LL R2
4 026549 RES CF 1/2W 5% 1.5k LL R118 R121 R218 R221
4 037354 RES FILM 1W 5% 4.7k LL R117 R122 R217 R222
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 037845 RES WW 5W 10% 47 ohm R135
2 014866 XSTR NPN MPSW92 TO-226AE Q104 Q204
2 014867 XSTR PNP MPSW42 (TO-92) Q105 Q205
2 016739 XSTR NPN 2N4401 TO-92 Q112 Q212
4 016742 XSTR PNP 2N4403 TO-92 Q1-2 Q113 Q213
6 025751 XSTR NPN 2SC2362K/2SC2389STPS Q100-102 Q200-202
2 025752 XSTR PNP 2SA1038STPS Q103 Q203
2 051447 XSTR PNP 2SB1236 Q107 Q207
2 051448 XSTR NPN 2SD1857 Q106 Q206
2 028759 XSTR PNP 2SA1306A TO-220P Q109 Q209
2 028760 XSTR PNP 2SC4793/2SC3298B Q108 Q208
2 051724 XSTR, PNP POWER MJW21191 TO-247 Q111 Q211
2 051725 XSTR NPN POWER MJW21192 TO-247 Q110 Q210
1 027413 HDR .1 CTR 6 CKT SQ PIN P10
1053407 PCB FAB ACST SFX PWR AMP
ACOUSTASONIC SFX
PARTS LIST
CHASSIS ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
052091 CHASSIS ASSY, ACOUSTASONIC SFX DOM 120V
052092 CHASSIS ASSY, ACOUSTASONIC SFX EUR 230V
052093 CHASSIS ASSY, ACOUSTASONIC SFX UK 230V
052094 CHASSIS ASSY, ACOUSTASONIC SFX AUST 240V
052095 CHASSIS ASSY, ACOUSTASONIC SFX JAP 100V
1 051950 CHASSIS, ACST SFX AMP
1 053402 PANEL, FRONT, ACST SFX AMP
1 053403 PANEL, REAR, ACST SFX AMP
1 051897 XFMR PWR 160W 120V DOM 120V ONLY
1 051898 XFMR PWR 160W 230V ALL 230V/240V
1 053405 XFMR PWR 160W 100V 100V ONLY
1052097 PCB ASSY ACST SFX PREAMP TOP
1052099 PCB ASSY ACST SFX PREAMP BTM
1053408 PCB ASSY ACST SFX PWR AMP
1 053567 PCB ASSY DSP ACST SFX
1 053885 FUSE QA 20mmX5mm 250V 5A UL/CSA 100V/120V UNITS ONLY
1 020795 FUSE QA 20mmx5mm 250v 2.5A 230V/240V UNITS ONLY
2 013112 FUSE TD 20mmx5mm 250v 1A ALL
5 051404 STANDOFF, NYLON BLACK @ DSP/pre PCB
3 016440 STNDOFF RND AL 6-32x1x1/4 @ pwr amp PCB
1 048974 HEATSINK EXTRUDED BXR200
6 031184 SCRW M6-32x1/4 PHPS BLX ITLW pwr amp PCB mtg
9 027636 SCRW TF 8-32x5/8 HWH BLX @ HTSNK/XFMR
6 017716 SCRW 8-32x1/2 PHP BLX @ HEATSINK
2 051155 SCRW #4 HI LO @ XLR
1 038900 SCRW TF 6-32X1/4 PHP ZI at ground lug
16 051017 KNOB ROTARY BRN/WHT @ CONTROLS
1 053615 KNOB ROTARY SS W/ ARROW @ DSP
1 039236 SWITCH ROCKER DPST PSEUDO-IEC 100V/120V UNITS ONLY
1 040582 SWITCH DPST .250 TAB GLOBAL 230V/240V UNITS ONLY
5

ACOUSTASONIC SFX
PARTS LIST
CHASSIS ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 026541 CABLE ASSY PWR W/.250 TAB 120V 120V DOM UNITS ONLY
1 038602 CABLE ASSY PWR AUST .250 TAB 240V AUST UNITS ONLY
1 040993 CABLE ASSY PWR 5A U.K..250 TAB 230V UK UNITS ONLY
1 033331 CABLE ASSY PWR 220/240v 230V EUR UNITS ONLY
1 048463 CABLE ASSY PWR .250 100v 100V JAP UNITS ONLY
1 026038 BUSHING SR .625x.062x37/64 BLK for PWR CABLE 100V/120V
1 010401 BUSHING SR .625x.125x37/64 WHT for PWR CABLE 230V/240V
1 012560 BUSHING SNAP 5/8x27/32 BLK for spkr cables
CABINET ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
0.5 036797 CLOTH GRILLE TAN/BRN estimated qty
0.3 029085 VELCRO STRIP LOOP 1.5"wd BLK at GRILLES
0.3 029086 VELCRO STRIP HOOK 1.5"wd BLK
1.7 036796 TOLEX BROWN COVERING
0.1 040005 TAPE ALUM 7"x60YDS FOIL SHIELD
1 037121 HANDLE STRAP BRN
1 032524 INSERT HANDLE
2 025395 HANDLE CAP 1 HOLE NI
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
ACOUSTASONIC SFX
PARTS LIST
UNIT ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1051642 CAB ASSY, ACST SFX AMP
052091 CHS ASSY ACST SFX AMP 120V DOM
052092 CHS ASSY ACST SFX AMP 230V EUR
052093 CHS ASSY ACST SFX AMP 230V U.K.
052094 CHS ASSY ACST SFX AMP 240V AUST.
052095 CHS ASSY ACST SFX AMP 100V JAP
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
6 053483 SCRW TF 8-32X1-3/8 #6 OHP NI SEMS CHS
8 026577 SCRW M 10-32X1 PHP BLX @ SPEAKERS
4 9904101110 SCREW PB 8x5/8 PHP BLX @ HORN
4 037210 SCREW SMA 2x3/8 OHP NI @ LOGO
14 029527 WSHR FNSH 8-5/8 FLNGD BLX WX @ grilles
12 051098 TAPE VINYL NITRITE W/ ADHESIVE (FT) grille edge
1 051016 SPEAKER 8" 8 OHM HI FI ACST FRONT
1 029753 SPEAKER 10" 8 ohm PRCR/10WDG SIDE
1 049260 HORN CERAMIC PIEZO KXR 60
1 036795 NAMEPLATE 62 FENDER
1 051871 NAMEPLATE ACOUSTASONIC AMP
6