Fender ULTIMATE CHORUS DSP User manual

ULTIMATE CHORUS DSP

p/n 022-6701-020 (120V)
SERVICE MANUAL
CONTENTS:
Notices
Specifications
Parts lists:
PCB assembly
DSP PCB assembly
Chassis assembly
Cabinet assembly
End item
Schematics/diagrams
Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258

ULTIMATE CHORUS DSP
(This is the model name for warranty claims)
SERVICE MANUAL
MAY 2000
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

ULTIMATE CHORUS DSP
SPECIFICATIONS
Product Release No.: PR 436 (This is not a model number)
Part Number: 120V Version : 22-6701-020
240V Aus : 22-6731-020
230V UK : 22-6741-020
230V Eur : 22-6761-020
100V : 22-6771-020
Power Requirements: 360W
Power Amp Section
Power output: 65W per channel, (130W total) @ 5% THD
Rated load impedance: 8Ωper chanel
Sensitivity: 1.4V RMS
Preamp Section
Input Impedance: Input 1: >1MΩ, Input 2: >130kΩ
Nominal level: Input 1: 100mV Input 2: 200mV
Mono effects loop: Nominal level: -10dBV
Send output impedance: 1kΩ(balanced)
Return input impedance: 18kΩ(balanced)
Stereo effects loop: Nominal level: -10dBV
Send output impedance: 1kΩ
Return input impedance: 100kΩ
Channels: Left on tip, Right on ring
Speaker Complement: Two 8 ΩFender Special Design 12" Speakers (P/N 0025923000)
Dimensions: Height:18 1/2" (47 cm)
Width: 26 1/8" (66 cm)
Depth: 10 1/4" (26 cm)
Weight: 47 lbs. (21.3 kg)
Product specifications are subject to change without notice

ULTIMATE CHORUS DSP
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
PRINTED CIRCUIT BOARD ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0040987000 CABLE RIBBON 10 CKT 3.75" PW2
1 0048845000 CABLE RIBBON 12 CKT 3.75" PW14
1 0048914000 CABLE RIBBON 8 CKT 7" PW3
1 0051445003 CAP CD 22pF 500V 5% C27
4 0051457003 CAP CD 100pF 500V 5% C37-38 C60-61
15 0051406003 CAP CD 220pF 500V 10% C31-32 C53-54 C64-68 C72-73 C82-85
7 0051458003 CAP CD 470pF 500V 10% C5 C13 C23 C33-34 C69 C93
1 0051459003 CAP CD 560pF 500V 10% C17
33 0034788003 CAP CR .1uF 50V 20% .2" LS C46-52 C80-81 C88-89 C98-107 C114-117 C121-128
2 0027255003 CAP MPF .001uF 100V 10% C4 C20
3 0027256003 CAP MPF .0015uF 100V 10% C40-41 C43
3 0027257003 CAP MPF .0022uF 100V 10% C15 C18-19
1 0027259003 CAP MPF .0033uF 100V 10% C16
4 0027261003 CAP MPF .0047uF 100V 10% C1-2 C56-57
2 0027264003 CAP MPF .01uF 100V 10% C8 C55
2 0027265003 CAP MPF .015uF 100V 10% C21-22
2 0027270003 CAP MPF .033uF 100V 10% C9 C11
1 0027272003 CAP MPF .047uF 63V 10% C95
1 0027277003 CAP MPF .082uF 100V 10% C10
4 0027278003 CAP MPF .1uF 63V 10% C26 C86-87 C94
2 0052003003 CAP MPF .1uF 250V 10% C110-111
1 0053860000 CAP MPF .1uF 250VAC 20% C131
5 0027281003 CAP MPF .22uF 63V 10% C7 C25 C70-71 C96
4 0027286003 CAP MPF .47uF 63V 10% C6 C24 C92 C97
2 0033477003 CAP MPF .68uF 63V 10% C42 C44
2 0033606003 CAP AE RDL .47uF 50V 20% C12 C14
8 0028459003 CAP AE RDL 2.2uF 50V 20% C58-59 C74-77 C90 C109
3 0028460003 CAP AE RDL 4.7uF 50V 20% C78-79 C108
11 0028467003 CAP AE RDL 22uF 50V 20% C3 C28-30 C35-36 C39 C62-63 C129-130
3 0028474003 CAP AE RDL 100uF 25V 20% C91 C119-120
1 0028485003 CAP AE RDL 470uF 16V 20% C45
1 0028490003 CAP AE RDL 1000uF 6.3V 20% C118
2 0031756000 CAP AE RDL 4700uF 50V +100%-20% C112-113
2 0027937000 CONTROL SNAPIN 2k 15A TAPER R17 R48 normal mid drive mid
3 0054390000 CONTROL SNAPIN 5k 15A TAPER R68 R71 R75 normal RVB?DLY level drive RVB/DLY level
CHR/MOD level
4 0027940000 CONTROL SNAPIN 50k 15A TAPER R15-16 R46-47 normal treble normal bass drive treble
drive bass
2 0027941000 CONTROL SNAPIN 50k B TAPER R9 R40 normal volume drive volume
1 0027942000 CONTROL SNAPIN 50k 2B DETENT R37 presence
1 0027947000 CONTROL SNAPIN 100k 30C TAPER R27 gain
48 0006260001 DIODE 1N4448 SIGNAL LL D1-8 D10-35 D45 D47-48 D50-54 D59 D61-63 D65-66
5 0064089001 DIODE 1N4003 LL D40-43 D64
4 0025821001 DIODE HV FDH400 SWITCHING LL D36-39
4 0029045000 DIODE 6A 400V 6A4 LEAD FORMED D67-70
2 0031017001 DIODE ZEN 1N5223B 2.7V 5% LL D56 D58

ULTIMATE CHORUS DSP
PRINTED CIRCUIT BOARD ASSEMBLY (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 0031635001 DIODE ZEN 1N5240B 10V 5% LL D44 D46 D49 D60
3 0028119060 DIODE ZEN 1N5353B 16V 5W 5% D71-73
1 0041074000 ENCODER 16-POS 4-BIT BINARY S5
13 0025802000 FSTN TAB MALE .250x.032 PCB MT P1-13
2 0051094003 FUSE CLIP PCB 5mm (EXPT) @F1
1 0027421000 HDR .1 CTR 12 CKT SQ PIN P14
7 0031611000 IC OP-AMP DUAL PC4560 U4-10
3 0016795000 IC OP-AMP DUAL TL072 U1-3
1 0041261000 IC VOLT REF LM4040DIZ-10.0 U11
1 0041812000 IC REGULATOR +5V MC7805CT U12
1 0050849000 HEATSINK PCB LEVEL 576012U @U12
1 0039420000 SCRW M 4-40X3/8 PHP SS SEMS @U12
1 0097360000 NUT HEX 4-40 EX LOCK @U12
1 0051658000 JACK MONO R/A J7
6 0053450000 JACK STEREO R/A J1-6
1 0049948003 LED RED LONG LEAD LUMEX D9
1 0030755000 LED GREEN T-1 3mm DIFFUSED D55
1 0049948000 LED RED LONG LEAD LUMEX D57
2 0036178000 SPACER LED .5x.1 BRN A6192-1 @D55 D57
10055891000 PCB, MAIN, ULT CHRS DSP
2 0024945001 RES CF ¼W 5% 33ohm LL R138-139
7 0024947001 RES CF ¼W 5% 47ohm LL R83 R114-117 R200-201
2 0028015001 RES CF ¼W 5% 130ohm LL R12 R43
1 0024955001 RES CF ¼W 5% 180ohm LL R81
9 0024961001 RES CF ¼W 5% 470ohm LL R8 R110-113 R132-135
11 0024965001 RES CF ¼W 5% 1k LL R28 R58-61 R102-105 R162-163
5 0028842001 RES CF ¼W 5% 1.1k LL R19 R148-151
1 0028862001 RES CF ¼W 5% 1.3k LL R171
1 0024969001 RES CF ¼W 5% 1.5k LL R177
3 0024973001 RES CF ¼W 5% 3.3k LL R11 R26 R42
5 0024975001 RES CF ¼W 5% 3.9k LL R126-127 R130-131 R165
2 0024977001 RES CF ¼W 5% 4.7k LL R118-119
1 0028034001 RES CF ¼W 5% 5.1k LL R5
2 0024979001 RES CF ¼W 5% 6.8k LL R6 R186
4 0025942001 RES CF ¼W 5% 7.5k LL R23 R38-39 R84
2 0026510001 RES CF ¼W 5% 9.1k LL R72-73
6 0024981001 RES CF ¼W 5% 10k LL R52-55 R189 R191
1 0029002001 RES CF ¼W 5% 11k LL R22
2 0024983001 RES CF ¼W 5% 12k LL R85 R99
5 0024985001 RES CF 1/4W 5% 15k LL R7 R86-87 R172 R187
3 0024986001 RES CF 1/4W 5% 18k LL R69 R76 R166
13 0024987001 RES CF 1/4W 5% 22k LL R14 R20-21 R32-33 R35 R45 R64-67 R167 R192
2 0028863001 RES CF 1/4W 5% 24k LL R24 R98
6 0024988001 RES CF 1/4W 5% 27k LL R88-89 R122-125
2 0024991001 RES CF 1/4W 5% 39k LL R13 R44
7 0024993001 RES CF 1/4W 5% 47k LL R92-97 R164
4 0028990001 RES CF 1/4W 5% 51k LL R106-109
1 0024994001 RES CF 1/4W 5% 56k LL R10
3 0024995001 RES CF 1/4W 5% 68k LL R1-2 R34
1 0028153001 RES CF 1/4W 5% 75k LL R41
3 0024996001 RES CF 1/4W 5% 82k LL R70 R74 R77
13 0024997001 RES CF 1/4W 5% 100k LL R49 R56-57 R62-63 R90-91 R100-101 R182 R188 R190 R194
1 0024998001 RES CF 1/4W 5% 120k LL R50
1 0025059001 RES CF 1/4W 5% 220k LL R18

ULTIMATE CHORUS DSP
PRINTED CIRCUIT BOARD ASSEMBLY (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
6 0025065001 RES CF 1/4W 5% 470k LL R51 R78-79 R169 R176 R185
3 0028018001 RES CF 1/4W 5% 510k LL R3-4 R29
3 0025067001 RES CF 1/4W 5% 680k LL R120-121 R193
2 0025068001 RES CF 1/4W 5% 820k LL R36 R184
4 0025069001 RES CF 1/4W 5% 1M LL R30-31 R170 R173
2 0025079001 RES CF 1/4W 5% 4.7M LL R195-196
1 0025084001 RES CF 1/4W 5% 10M LL R25
2 0016946001 RES MF 1/4W 1% 825ohm LL R140-141
4 0015718001 RES MF 1/4W 1% 1.00k LL R152-155
1 0016953001 RES MF 1/4W 1% 1.78k LL R82
2 0027632001 RES MF 1/4W 1% 2.43k LL R136-137
1 0015581001 RES MF 1/4W 1% 9.53k LL R80
1 0016971001 RES MF 1/4W 1% 33.2k LL R181
1 0017191001 RES MF 1/4W 1% 36.5k LL R183
2 0017372001 RES MF 1/4W 1% 51.1k LL R179-180
1 0016979001 RES MF 1/4W 1% 215k LL R178
6 0051040001 RES MOX FP 1/4W 5% 47ohm LL R142-147
2 0026493001 RES CF 1/2W 5% 2.7k LL R174-175
1 0028029001 RES FILM 1W 5% 1.5k LL R168
4 0055932001 RES MOX 2W 5% .15ohm LL R156-159
2 0051417001 RES MOX 2W 5% 22ohm LL R160-161
1 0027628001 RES MOX 2W 5% 47ohm LL R197
2 0028028000 RES WW BT 5W 10% .47ohm R128-129
2 0029047000 RES WW BT 7W 10% 270ohm R198-199
4 0028091000 SWITCHPUSHSLFLKSHORTSTROKE S1-4
4 0048451000 BUTTON PUSH OFF-WHITE @S1-4
1 0051418003 THERMAL SENSOR PTC 100 DEG C RT1
1 0026411000 THERMISTOR 2.5 ohm 8A C30-19 RT2
7 0014689003 XSTR N-CH JFET J111 TO-92 Q1-5 Q38-39
3 0016739003 XSTR NPN 2N4401 TO-92 Q20-21 Q37
6 0016742003 XSTR PNP 2N4403 TO-92 Q22-23 Q33-36
6 0025751003 XSTR NPN 2SC2362K/2SC2389STPS Q6-11
2 0054418000 XSTR NPN 2SC3263 MT-100 Q28-29
2 0028760000 XSTR NPN 2SC4793/2SC3298B Q24-25
2 0051448003 XSTR NPN 2SD1857 Q14-15
2 0014867003 XSTR NPN MPSW42 TO-92 Q18-19
3 0025752003 XSTR PNP 2SA1038STPS Q12-13 Q32
2 0054417000 XSTR PNP 2SA1294 MT-100 Q30-31
2 0028759000 XSTR PNP 2SA1306A TO-220P Q26-27
2 0014866003 XSTR PNP MPSW92 TO-226AE Q16-17
1 0055881000 HEATSINK PLATE HS1
3 0032908000 SCRW TF 6-32x3/8 PHP ZI PCB to HEATSINK PLATE
8 0032934000 SCRW TF 4-40x1/2 HIHS ZI @Q24-31
8 0032937000 WSHR CONE @Q24-31
4 0040903000 INSULATOR MICA TO-218 @Q28-31

ULTIMATE CHORUS DSP
DSP PCB ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 0053544004 XSTR NPN 2N2222 SMT Q1-4
1 0053536004 IC, DSP, 56L811 U1
2 0053537004 SRAM, LOW VOLTAGE 32Kx8, SMT U2-3
1 0055764000 PROGRAMMED EPROM U4
1 0053540004 IC, CODEC, AK4520A U5
1 0053541004 VOLT REGULATOR 3.3V W/R, SMT U6
1 0049948000 LED RED LL LUMEX D6
1 0036178000 SPACER LED .5x.1 BRN A6192-1
2 0041074000 ENCODER S1,S2 BREAK OFF LOCATING TABS-2PLCS
1 0027419000 HDR .1 CTR 10 CKT SQ PIN P2
1 0027416000 HDR .1 CTR 8 CKT SQ PIN P3
2 0053555004 CAP CER 0805 22pF 25V 5% C10-11
1 0053558004 CAP CER 0805 750pF 25V 5% C13
2 0053557004 CAP CER 0805 .001uF 25V 5% C29-30
2 0053559004 CAP CER 0805 .0039uF 25V 5% C33-34
5 0053556004 CAP CER 0805 .01uF 25V 5% C12 C16 C19 C38-39
17 0053554004 CAP CER 0805 .1uF 25V 5% C1-9 C14-15 C18 C22-23 C25 C27 C36
2 0053560004 CAP TAN 3528 4.7uF 15V 20% C31-32
7 0053561004 CAP TAN 3528 10uF 15V 20% C17 C21 C24 C26 C28 C35 C37
2 0055777004 RES MF 0805 1/10W 0 ohm R59 R61
3 0053547004 RES MF 0805 1/10W 10 ohm 5% R15-17
4 0053552004 RES MF 0805 1/10W 150ohm 5% R40-43
2 0053550004 RES MF 0805 1/10W 180 ohm 5% R34-35
8 0053549004 RES MF 0805 1/10W 560 ohm 5% R25 R27-29 R54-R57
1 0053546004 RES MF 0805 1/10W 2k 5% R2
4 0053548004 RES MF 0805 1/10W 3.3k 5% R24 R26 R30-31
32 0053545004 RES MF 0805 1/10W 10k 5% R3-14 R18-23 R36-39 R44-53
2 0053551004 RES MF 0805 1/10W 47k 5% R32-33
1 0053553004 RES MF 0805 1/10W 1M 5% R1
1 0053542004 CRYSTAL, 10 MHz, SMT Y1
1 0053539004 IC SOCKET, 32 PLCC, SMT @ U4
1 0053570000 PCB FAB, DSP SFX SERIES
CHASSIS ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
10055898000 CHASSIS ULTIMATE CHORUS DSP
1 0053884000 FUSE QA 20mmX5mm 125V4A ULCSA
1 0020794000 FUSE QA 20mmx5mm 250v 2A 230V/240V
10055892000 PCB ASSY ULT CHRS DSP (MEX)
1 0055590008 PCB ASSY DSP PRCN CHR DSP
5 0028500000 SCRW TF 8-32x3/4 HWH SLTD Z1 chassis to heatsink
2 0021709000 BUSHING SR .437x.062x13/32 BLK @speaker wires
4 0051404000 STANDOFF NYLON BLK .375 @PCBs
16 0026402000 KNOB POINTER BLACK
1 0033045000 END BELL XFMR PWRCH @xfmr
4 0028591000 NUT ACORN 8-32 @xfmr
4 0030007000 WSHR LCK INTL 8x.330x.02 ZI @xfmr
1 0038900000 SCRW TF 6-32X1/4 PHP ZI ground
7 0055838000 NUT PLASTIC BLK REAN JACK
10055896000 PANEL FRNT ULT CHRS DSP
10055897000 PANEL REAR ULT CHRS DSP

ULTIMATE CHORUS DSP
CHASSIS ASSEMBLY (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0031726000 HEATSINK BAR
1 0054642000 CONNECTOR IEC SNAP-IN
1 0039236000 SWITCH ROCKER DPST PSEUDO-IEC
1 0040582000 SWITCH DPST .250 TAB GLOBAL 230V
1 0031668000 XFMR PWR 120v/125w DOMESTIC
1 0039253000 XFMR PWR EXP ULTIMATE CHORUS EXPORT
CABINET ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
REF 037788000 CLOTH GRILLE BLACK/SILVER
4 026566000 CORNER 2 HOLE w/TAB NI
2 026568000 CORNER 3 HOLE NI
4 019276000 GLIDE CAB 1.24x.335 NI
4 019275000 INSERT GLIDE CUSHION 1.27 DIA
1 027846000 HANDLE 9.25" NO LOGO
2 019279000 HANDLE CAP 2 HOLE NI
1 032524000 INSERT HANDLE
4 056482000 MTG PLATE - SWIVEL CASTER
12 021972000 NUT T 10-32x3/4 STR 3 PRNG BLX
4 022244000 SCRW M 10-32x1-1/8 OHP NI
10 026571000 SCRW SMAB 8x5/8 THP NI
4 026625000 SCRW WOOD 8x1 FH
16 027199000 SCRW SMAB 10x3/4 PHP NI
REF 026570000 TOLEX BRAVURA BLACK
REF 029085000 VELCRO STRIP LOOP 1.5"wd BLK
REF 029086000 VELCRO STRIP HOOK 1.5"wd BLK
END ITEM
QTY PART # DESCRIPTION REFERENCE DESIGNATION
10040071000 CAB ASSY ULT CHORUS/STAGE160
10055899000 CHS ASSY ULT CHRS DSP 120V
REF 0055900000 CHS ASSY ULT CHRS DSP 230V
REF 0055901000 CHS ASSY ULT CHRS DSP 240V
REF 0055902000 CHS ASSY ULT CHRS DSP 100V
4 0023513000 CASTER SWIVEL
1 0047248000 CORD PWR W/IEC CONN DOM
REF 0047251000 CORD PWR W/IEC CONN 230V
REF 0047249000 CORD PWR W/IEC CONN 230V UK
REF 0047250000 CORD PWR W/IEC CONN 250V
REF 0053997000 CORD PWR W/IEC CONN 100V JPN

ULTIMATE CHORUS DSP
END ITEM (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0029906000 NAMEPLATE FENDER GENERIC SMALL
2 0025923000 SPKR 12"8OHM 75W(099-4812-005)
2 0018113000 SCRW SMA 4x1/2 OHP BLX nameplate
8 0026577000 SCRW M 10-32x1 PHP BLX speakers
6 0036199000 SCRW M 8-32x1-3/16 OHP BLX CP chassis
6 0029527000 WSHR FNSH 8-5/8 FLNGD BLX WX chassis
1 0055592000 FTSW ASSY 3-BTN PRCR DSP
REF 0055907000 MANUAL OWNERS ULT CHRS DSP
REF 0055890000 SVC DIAG COMB ULT CHRS DSP
REF 0053569000 SVC DIAG COMB DSP PCB ASSY PRN CHRS DSP