Fender_stage_100_160_dsp 电路图 维修原理图.pdf
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1、STAGE 100/160 DSP (This is the model name for warranty claims) Fender Musical Instruments Corp. 8860 East Chaparral Road Suite 100 Scottsdale, AZ 85250 1 p/n 2267000020 / 2268000020 (120V) Head Version p/n 2269000010 (120V) SERVICE MANUAL CONTENTS: Notices. 2 Specifications. 3 Service Notes. 4 Circu
2、it Description. 5 Parts Lists: PCB Assembly. 6 uDSP Assembly . 8 Chassis Assembly. 9 Cabinet Assembly . 10 End Item Assembly . 10 Footswitch Assembly 11 Service Diagrams . 12 收音机爱好者资料库 Ra d i o Fa n s .CN STAGE 100/160 DSP (This is the model name for warranty claims) 2 June, 2002 IMPORTANT NOTICE Co
3、pyright 2002 FMIC. All rights reserved. All information contained herein is CONFIDENTIAL and PROPRIETARY and is the property of Fender Musical Instruments Corporation. It is not to be sold or assigned to another party and is disclosed solely for use by Fender Authorized Service Centers for purposes
4、of product service and maintenance. All information is not to be dis- closed to others without the expressed permission of Fender Musical Instruments Corporation. All specifications are subject to change without no- tice. This information and any copies produced electronically or otherwise must be s
5、urrendered upon demand of Fender Musical Instruments Cor- poration. Parts marked with two asterisks (*) indicate the required use of that specific part. This is neces- sary for RELIABILITY and SAFETY requirements. DO NOT USE A SUBSTITUTE! PARTS LIST CODES The description codes used in the itemized P
6、arts Lists are defined below: CAPACITOR CODES CAP AE=Aluminum Electrolytic CAP CA=Ceramic Axial CAP CD=Ceramic Disk CAP MPF=Metalized Polyester Film CAP MY=Mylar CAP PFF=Polyester Film/Foil RESISTOR CODES RES CC=Carbon Comp RES CF=Carbon Film RES FP=Flame Proof RES MF=Metal Film RES WW=Wire Wound HA
7、RDWARE CODES BLX=Black Oxide CR=Chrome Plated HWH=Hex Washer Head M=Machine Screw NI=Nickel Plated OHP=Oval Head Phillips PB=Particle Board PHP=Pan Head Phillips PHPS=Pan Head Phillips Sems SMA=Sheet Metal A Point SMB=Sheet Metal B Point SS=Stainless Steel TF=Thread Forming ZI=Zinc Plated 收音机爱好者资料库
8、Ra d i o Fa n s .CN STAGE 100/160 DSP (This is the model name for warranty claims) 3 SPECIFICATIONS Model Name:Stage 100 DSPStage 160 DSPStage 100H DSP (Head Version) Release Number:PR 501 PR 501PR 501 (Not model numbers) Part Numbers(120V, 60Hz) US:226700002022680000202269000010 (110V, 60Hz) TW:226
9、700102022680010202269001010 (240V, 50Hz) AUS:226700302022680030202269003010 (230V, 50Hz) UK:226700402022680040202269004010 (230V, 50Hz) ARG:226700502022680050202269005010 (230V, 50Hz) EUR:226700602022680060202269006010 (100V, 50/60Hz) JPN:226700702022680070202269007010 (220V, 60Hz) ROK:2267009020226
10、80090202269009010 (For all Models) Power Requirement:400W Power Output:100W RMS into 8 ohms 5%THD 160W RMS into 4 ohms 5%THD Power Amp Sensitivity:620mV for 100W into 8 ohms 5%THD 810mV for 160W into 4 ohms 5%THD ImpedancesInput (Pre-Amp):1M ohms Pre Amp Out:1k ohms Pwr Amp In:10k ohms Speaker Compl
11、ement:One (1) 12, 8 ohm,Two (2) 12”, 8 ohm,-NA- Celestion G12T-100Celestion G12T-100 (P/N 0054420000)(P/N 0054420000) DimensionsHeight:17.5 in (45 cm)18.5 in (47 cm)8.5 in (22 cm) Width:22.4 in (57 cm)26.1 in (66 cm)22.4 in (57 cm) Depth:10.2 in (26 cm)10.3 in (26 cm)9.5 in (24 cm) Weight:42 lbs (19
12、.1 kg)53 lbs (24.1 kg)24 lbs (10.9 kg) Product specifications are subject to change without notice 收音机爱好者资料库 Ra d i o Fa n s .CN STAGE 100/160 DSP (This is the model name for warranty claims) 4 SERVICE NOTES 1. CHASSIS REMOVAL is accomplished by first removing two (2) screws from the cabinet side pa
13、nel and four (4) screws from the top of the cabinet; disconnect the ” speaker plug(s) from the speaker jack(s) and then slide the chassis toward the rear of the cabinet. 2. uDSP PCB ASSEMBLY REMOVAL is accom- plished by disconnecting the ribbon cable on the PCB Assembly, releasing the tabs on each o
14、f the plastic stand-offs which the PCB assem- bly is mounted. Removal of the uDSP PCB assembly may be necessary should any of the Digital Effects operate improperly. 3. STAGE 100/160 DSP MAIN PCB REMOVAL is accomplished by removing the following items: All knobs including washers and nuts (14) , one
15、 (1) input jack nut and washer, (1) screw near mains fuse, seven (7) screws at the heatsink attached from the bottom of the chassis. Dis- connect the transformer and primary leads at P1-P14. Disconnect the breakaway PCB rib- bon cable at P20 and speaker wires (blk/wht) at P15-P16. Disconnect the rib
16、bon cable to uDSP assembly at P19. Remove the power LED from the jewel assembly. 4. STAGE 100/160 DSP BREAKAWAY PCB RE- MOVAL is accomplished by removing five (5) nuts and washers at the jacks and two (2) screws at the XLR jack. Disconnect the ribbon cable from the main PCB at P20 and the speaker wi
17、res (blk/wht) at P15-P16. PCB EXCHANGE POLICY Parts marked with a single asterisk (*) in the Part Lists (starting on page 10) are not field replaceable. If a failure due to one of these components is de- tected, please contact the Fender Dealer Customer Service Department to order the com- plete PCB
18、 Assembly. STAGE 100/160 DSP (This is the model name for warranty claims) 5 CIRCUIT DESCRIPTION This section provides an overview of any new or unusual circuitry incorporated into this amplifier model. The purpose is to aid the service technician by providing insight into the design areas most likel
19、y to present a challenge in troubleshooting. This overview is focused for the efficient use and security of Fender proprietary information. PRE-AMPLIFIER The guitar input signal is fed into the high pass filter at U1A before splitting into two signal paths. The normal channel signal path (U1B to U3B
20、) is ac- tive until FETs Q2, Q4, and Q6 are turned on activating the drive channel signal path (U2A to U3B). Turning on FETs Q1, Q3, and Q5 activates the “More Drive” channel signal path for increased gain and sustain. Differential amp U8A and fol- lower U8B adjust the signal level and provides +1.6
21、5VDC bias voltage to the uDSP effects card. The preamp is in series with the digital effects card, therefore, disconnecting the card breaks the overall signal path. The low pass filter at U5B recovers the signal from the uDSP card and sends it to the external effects loop and power amplifier. POWER
22、AMPLIFIER “Flying Rail” power amp topology. The output stage is referenced to ground, and the output signal is de- rived from the center tap of the high voltage power supply (C86 & C87) which is floating. Diffamp U7 B amplifies voltage developed at the load sense re- sistors (R120123) to provide neg
23、ative current feedback. Inserting an 8 load at Ext. Spkr (J7) turns on FET Q20 creating an attenuation network (R117119) to compensate for the increased cur- rent at 4 total load impedance. This allows the amplifier to have a similar frequency response run- ning either an 8 or 4 speaker load. Thermi
24、stor RT2 monitors the heatsink temperature. Its resistance increases with temperature and at approx. 100 C turns on xstr Q23. This shorts out C77, turning on FET Q22 providing a muting func- tion at the power amp input. The amplifier remains muted until the heatsink cools down, at which point, norma
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