Fender Princeton Chorus DSP User manual

PRINCETON CHORUS DSP
p/n 022-5700-020 (120V)
SERVICE MANUAL
CONTENTS:
Notices
Specifications
Parts lists:
PCB assembly
Chassis assembly
Cabinet assembly
Footswitch assembly
Footswitch PCB assembly
DSP PCB assembly
End Item assembly
Schematics, drawings
Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258
PRINCETON CHORUS DSP
(This is the model name for warranty claims)
SERVICE MANUAL
OCTOBER 1999
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

PRINCETON CHORUS DSP
SPECIFICATIONS
Product Release No.: PR 424 (This is not a model number)
Part Number: 120V Version : 22-5700-020
240V Aus : 22-5730-020
230V UK : 22-5740-020
230V Eur : 22-5760-020
100V : 22-5770020
Power Requirements: 100V Version : 100 VAC 50/60 Hz, 180W
120V : 120 VAC 60 Hz, 180W
230V : 230 VAC 50 Hz, 180W
240V : 240 VAC 50 Hz, 180W
Power Amp Section
Power Output: 25 Watts per channel, (50W total) @ 5% THD
Rated Load Impedance: 8Ωper channel
Sensitivity: 1.4V RMS
Preamp Section
Input Impedance: >1MΩ(Input 1) >130kΩ(Input 2)
Nominal Level: 100mV (Input 1) 200mV (Input 2)
Mono Effects Loop: Nominal level -10dBV
Send output impedance 1kΩ(Balanced)
Return input impedance 22kΩ(Balanced)
Stereo Effects Loop: Nominal level -10dBV
Send output impedance 1kΩ
Return input impedance 18kΩ
(Left on tip, right on ring)
Speaker Complement: Two 8 ΩFender Special Design 10" Speakers (P/N 029753)
Dimensions: Height:17 1/2" (44 cm)
Width: 22 3/8" (57 cm)
Depth: 10 3/16" (26 cm)
Weight: 40 lbs. (18 kg)
Product specifications are subject to change without notice
PRINCETON CHORUS DSP
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
PRINTED CIRCUIT BOARD ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
10055579000 PCB, MAIN, PRNCTN CHRS DSP
1 0040987000 CABLE RIBBON 10 CKT 3.75" PW2
1 0048845000 CABLE RIBBON 12 CKT 3.75" PW17
1 0048914000 CABLE RIBBON 8 CKT 7" PW3
1 0051445003 CAP CD 22pF 500V 5% C25
4 0051457003 CAP CD 100pF 500V 5% C32 C34 C47-48
1 0051406003 CAP CD 220pF 500V 10% C51
6 0051458003 CAP CD 470pF 500V 10% C10 C21 C29-30 C52 C74
1 0051459003 CAP CD 560pF 500V 10% C14
19 0034788003 CAP CR .1uF 50V 20% .2" LS C41 C67-70 C79-80 C87-90 C94-101
4 0027255003 CAP MPF .001uF 100V 10% C4 C17 C38-39
3 0027257003 CAP MPF .0022uF 100V 10% C12 C15-16
1 0027259003 CAP MPF .0033uF 100V 10% C13
4 0027261003 CAP MPF .0047uF 100V 10% C1-2 C43-44
2 0027264003 CAP MPF .01uF 100V 10% C5 C42
2 0027265003 CAP MPF .015uF 100V 10% C18-19
2 0027267003 CAP MPF .022uF 100V 10% C61-62
3 0027270003 CAP MPF .033uF 100V 10% C6 C8 C24
1 0027272003 CAP MPF .047uF 63V 10% C76
1 0027277003 CAP MPF .082uF 100V 10% C7
1 0027278003 CAP MPF .1uF 63V 10% C75
2 0052003003 CAP MPF .1uF 250V 10% C83-84
1 0053860000 CAP MPF .1uF 250VAC 20% C104
3 0027281003 CAP MPF .22uF 63V 10% C20 C23 C77
5 0027286003 CAP MPF .47uF 63V 10% C9 C11 C22 C73 C78
2 0033477003 CAP MPF .68uF 63V 10% C36-37
2 0033606003 CAP AE RDL .47uF 50V 20% C53-54
7 0028459003 CAP AE RDL 2.2uF 50V 20% C45-46 C55-58 C82
2 0028460003 CAP AE RDL 4.7uF 50V 20% C59-60
2 0028463003 CAP AE RDL 10uF 50V 20% C65-66
12 0028467003 CAP AE RDL 22uF 50V 20% C3 C26-28 C31 C33 C35 C49-50 C81 C102-103
2 0028471003 CAP AE RDL 47uF 50V 20% C92-93
2 0047195003 CAP AE RDL 47uF 63V 20% C71-72
2 0028482003 CAP AE RDL 220uF 50V 20% C63-64
1 0028485003 CAP AE RDL 470uF 16V 20% C40
1 0028490003 CAP AE RDL 1000uF 6.3V 20% C91
2 0029654000 CAP AE RDL 4700uF 35V +100%-20% C85-86
1 0027937000 CONTROL SNAPIN 2k 15A TAPER R42 mid
2 0054390000 CONTROL SNAPIN 5k 15A TAPER R61-62 rvb/dly level, chr/mod level
2 0027940000 CONTROL SNAPIN 50k 15A TAPER R40-41 treb, bass
2 0027941000 CONTROL SNAPIN 50k B TAPER R9 R33 volume, od volume
1 0027942000 CONTROL SNAPIN 50k 2B DETENT R30 presence
1 0027947000 CONTROL SNAPIN 100k 30C TAPER R19 gain
1 0027950000 CONTROL SNAPIN 1 MEG 5C TAPER R22 limiter
2

PRINCETON CHORUS DSP
PARTS LIST
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
23 0006260001 DIODE 1N4448 SIGNAL D1-12 D17-18 D21-24 D26-28 D30-31
7 0064089001 DIODE 1N4003 D13-16 D29 D36-37
4 0020534000 DIODE 1N5402 RECTIFIER 200V C&F D32-35
2 0031635001 DIODE ZEN 1N5240B 10V 5% D19 D25
1 0041074000 ENCODER 16-POS 4-BIT BINARY S5
1 0026000001 FSTN TAB MALE.187x.032 PCB MT P12 (ass’y P/N 0055580000 domestic)
3 0026000001 FSTN TAB MALE.187x.032 PCB MT P12 P15-16 (ass’y P/N 0055581000
export)
8 0025802000 FSTN TAB MALE .250x.032 PCB MT P1-4 P6-8,P10(ass’y P/N 0055580000domestic)
11 0025802000 FSTN TAB MALE .250x.032 PCB MT P1-5 P7 P9-11 P13-14(ass’y P/N 0055581000
export)
2 0051094003 FUSE CLIP PCB 5mm (EXPT) @F1 (ass’y P/N 0055580000
domestic)
6 0051094003 FUSE CLIP PCB 5mm (EXPT) @F1-3 (ass’y P/N 0055581000
export)
1 0027421000 HDR .1 CTR 12 CKT SQ PIN P17
6 0031611000 IC OP-AMP DUAL PC4560 U4-7 U10-11
3 0016795000 IC OP-AMP DUAL TL072 U1-3
1 0041261000 IC VOLT REF LM4040DIZ-10.0 U12
2 0054377000 IC POWER AMP TDA1514A 40W U8-9
1 0054648000 HEATSINK PLATE DUAL TDA1514A @U8-9
2 0054378000 INSULATOR MICA 9 PIN SIP @U8-9
4 0027638000 SCRW TF 4-40x3/8 HWHS ZI .1"HD @U8-9
2 0032908000 SCRW TF 6-32x3/8 PHP ZI PCB to HEATSINK PLATE
1 0041812000 IC REGULATOR +5V MC7805CT U13
1 0013562000 IC REGULATOR +15V MC7815CT U14
1 0013564000 IC REGULATOR -15V MC7915CT U15
3 0050849000 HEATSINK PCB LEVEL 576012U @U13-15
3 0039420000 SCRW M 4-40X3/8 PHP SS SEMS @U13-15
3 0097360000 NUT HEX 4-40 EX LOCK @U13-15
1 0051658000 JACK MONO R/A J7
6 0053450000 JACK STEREO R/A J1-6
1 0048332000 LED RED PNL MT 7" D38
1 0049948000 LED RED LONG LEAD LUMEX D20
1 0036178000 SPACER LED .5x.1 BRN A6192-1 @D20
1 0028036000 LED 21L994 OPTO-ISOLATOR OP1
3 0024947001 RES CF 1/4W 47ohm 5% R72 R151-152
1 0028015001 RES CF 1/4W 130ohm 5% R37
2 0024955001 RES CF 1/4W 180ohm 5% R70 R150
1 0024961001 RES CF 1/4W 470ohm 5% R8
10 0024965001 RES CF 1/4W 1k 5% R20 R51-54 R91-94 R122
1 0028842001 RES CF 1/4W 1.1k 5% R11
1 0024969001 RES CF 1/4W 1.5k 5% R127
2 0024973001 RES CF 1/4W 3.3k 5% R18 R36
4 0024975001 RES CF 1/4W 3.9k 5% R101-102 R109-110
1 0028034001 RES CF 1/4W 5.1k 5% R5
PRINCETON CHORUS DSP
PARTS LIST
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 0024979001 RES CF 1/4W 6.8k 5% R6 R97-98 R136
4 0025942001 RES CF 1/4W 7.5k 5% R15 R31-32 R73
6 0024981001 RES CF 1/4W 10k 5% R45-48 R139 R141
1 0029002001 RES CF 1/4W 11k 5% R14
4 0024983001 RES CF 1/4W 12k 5% R74 R88 R95-96
5 0024985001 RES CF 1/4W 15k 5% R7 R75-76 R123 R137
13 0024987001 RES CF 1/4W 22k 5% R12-13 R25-26 R28 R39 R57-60 R65-66
R142
2 0028863001 RES CF 1/4W 24k 5% R16 R87
7 0024988001 RES CF 1/4W 27k 5% R35 R77-78 R103-106
1 0024991001 RES CF 1/4W 39k 5% R38
7 0024993001 RES CF 1/4W 47k 5% R34 R81-86
1 0024994001 RES CF 1/4W 56k 5% R10
3 0024995001 RES CF 1/4W 68k 5% R1-2 R27
14 0024997001 RES CF 1/4W 100k 5% R49-50 R55-56 R63-64 R79-80 R89-90 R132
+R138 R140 R144
1 0025059001 RES CF 1/4W 220k 5% R43
2 0025061001 RES CF 1/4W 330k 5% R117-118
6 0025065001 RES CF 1/4W 470k 5% R44 R67-68 R120 R126 R135
2 0028018001 RES CF 1/4W 510k 5% R3-4
3 0025067001 RES CF 1/4W 680k 5% R99-100 R143
2 0025068001 RES CF 1/4W 820k 5% R29 R134
5 0025069001 RES CF 1/4W 1M 5% R21 R23-24 R121 R125
2 0025079001 RES CF 1/4W 4.7M 5% R145-146
1 0025084001 RES CF 1/4W 10M 5% R17
1 0016953001 RES MF 1/4W 1.78k 1% R71
2 0015581001 RES MF 1/4W 9.53k 1% R69 R131
1 0040772001 RES MF 1/4W 15.0k 1% R130
1 0017191001 RES MF 1/4W 36.5k 1% R133
1 0031820001 RES MF 1/4W 49.9k 1% R129
1 0016979001 RES MF 1/4W 215k 1% R128
2 0030737001 RES CF 1/2W 5.6ohm 5% R111-112
1 0028861001 RES CF 1/2W 3.3k 5% R124
3 0027344001 RES FILM 1W 270ohm 5% R147-149
1 0029722001 RES FILM 1W 1k 5% R119
2 0027628001 RES MOX 2W 47ohm 5% R113-114
2 0028028000 RES WW BT 5W .47 ohm 5% R107-108
2 0029670000 RES WW BT 5W 150 ohm10% R115-116
4 0028091000 SWITCH PUSH SLFLK SHORT STROKE S1-4
4 0048451000 BUTTON PUSH OFF-WHITE @S1-4
1 0028503000 THERMISTOR 10 ohm 5A C60-11 RT1
3

PRINCETON CHORUS DSP
PARTS LIST
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
5 0014689003 XSTR N-CH JFET J111 TO-92 Q1-3 Q8-9
1 0016739003 XSTR NPN 2N4401 TO-92 Q7
3 0016742003 XSTR PNP 2N4403 TO-92 Q4-6
CHASSIS ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
10055584000 CHASSIS PRINCETON CHORUS DSP
10055580000 PCB ASSY PRNCTN CHRS DSP DOM
10055581000 PCB ASSY PRNCTN CHRS DSP EXP
1 0048384000 FUSE 20mmX5mm F2A 250V (100V/120V)
1 0013112000 FUSE TD 20mmx5mm 250v 1A (230V/240V)
2 0013681000 FUSE TD 20mmx5mm 250v 5A (Export only)
1 0025935000 SWITCH DPST .187 TAB (DOM) (100V/120V)
1 0039287000 SWITCH DPST .187 TAB GLOBAL (230V/240V)
5 0051404000 STANDOFF NYLON BLK .375
13 0026402000 KNOB POINTER BLACK
1 0029648000 XFMR PWR 120V PRINC (Domestic only)
1 0029649000 XFMR PWR EXPORT PRCR/CHRLD50
1 0028560000 END BELL XFMR 85W
4 0028591000 NUT ACORN 8-32
4 0030007000 WSHR LCK INTL 8x.330x.02 ZI
1 0038900000 SCRW TF 6-32X1/4 PHP ZI
10055582000 PANEL FRNT PRNCTN CHRS DSP
10055583000 PANEL REAR PRNCTN CHRS DSP
1 0028499000 HEATSINK BAR
3 0028500000 SCRW TF 8-32x3/4 HWH SLTD ZI
2 0021709000 BUSHING SR .437x.062x13/32 BLK
1 0054642000 CONNECTOR IEC SNAP-IN
1 0055590008 PCB ASSY DSP PRNCTN CHRS DSP
1 0027288000 LENS LED RED
PRINCETON CHORUS DSP
PARTS LIST
CABINET ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 0019275000 INSERT GLIDE CUSHION 1.27 DIA
4 0019276000 GLIDE CAB 1.24 X .335
2 0019279000 HANDLE CAP 2 HOLE NICKEL
1 0027846000 HANDLE 9.25" NO LOGO
1 0032524000 INSERT HANDLE
4 0026566000 CORNER 2 HOLE W/TAB NI
2 0026568000 CORNER 3 HOLE NI
12 0021972000 NUT T 10-32 X 3/4 STR 3 PRNG BLX
4 0022244000 SCRW M 10-32 X 1-1/8 OHP NI
10 0026571000 SCRW SMAB 8 X 5/8 THP NI
4 0026625000 SCRW WOOD 8 X 1 FH
1.06 0026570000 TOLEX BLACK
.6 0037788000 CLOTH GRILLE BLACK/SILVER
FOOTSWITCH ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0028109000 HSG END CUP LEFT FTSW
1 0028141000 HSG FTSW 3 BUTTON
1 0028143000 HSG END CUP RIGHT FTSW
1 0028895000 CABLE ASSY FTSW RT ANG 12'
1 0031647000 NUT HEX 12mmx1mm NI
8 0028684000 SCRW SMB 6x3/8 PH PHS BLX
3 0031899000 WSHR NYL .485x.775x.150 TK
1 0055594000 PLATE FTSW 3 BTN PRNCTN CH DSP
10055593000 PCB ASSY FTSW 3 BTN PRNCTN DSP
FOOTSWITCH PCB ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
3 0006260001 DIODE 1N4448
3 0028039000 LED RED 5x5mm SLB-55VR3
3 0028714000 SWITCH PUSH SPDT
1 0031017000 DIODE ZEN 1N5223B 2.7V 5%
3 0034921000 SPACER RND NYL .147x.250x.780
1 0037036000 JACK PCB MONO CA(099-0912-000)
1 0053898000 PCB FAB FTSW 3 BTN SUNN BASS
4

PRINCETON CHORUS DSP
PARTS LIST
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
PRINCETON CHORUS DSP
PARTS LIST
END ITEM ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0040187000 CAB ASSY PRINCETON CH BLK/SLVR
1 0055585000 CHS ASSY PRNCTN CHRS DSP 120V DOMESTIC
1 0055586000 CHS ASSY PRNCTN CHRS DSP 230V 230V/240V
1 0055587000 CHS ASSY PRNCTN CHRS DSP 100V 100V
1 0047248000 CORD PWR W/IEC CONN DOM DOMESTIC
1 0047251000 CORD PWR W/IEC CONN 230V EUROPE
1 0047249000 CORD PWR W/IEC CONN 230V UK UK
1 0047250000 CORD PWR W/IEC CONN 250V AUSTRALIA
1 0053997000 CORD PWR W/IEC CONN 100V JPN JAPAN
1 0055592000 FOOTSWITCH 3-BTN PRCR DSP
1 0029906000 NAMEPLATE FENDER GENERIC SMALL
1 0033077000 NAMEPLATE CAST PRCR
8 0026577000 SCRW M 10-32x1 PHP BLX speakers
4 0018113000 SCRW SMA 4x1/2 OHP BLX nameplates
6 0036199000 SCRW M 8-32x1-3/16 OHP BLX CP chassis
6 0029527000 WSHR FNSH 8-5/8 FLNGD BLX WX chassis
2 0029753000 SPKR 10"8 OHM (099-4810-004)
2 0038299000 DECAL SPEAKER GLOBE ROUND speakers
5