MX-5200_Series_Mixer_Service_Manual 电路图.pdf
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1、MX-5200 SERIES PROFESSIONAL MIXING CONSOLES SERVICE MANUAL CONTENTS Specifications Meter calibration Bus configuration Panel removal & interconnects Parts Lists: Input I/O PCB Assembly Input Channels PCB Assembly Input Panel Assembly Output I/O PCB Assembly Output PCB Assembly Output Panel Assembly
2、Chassis Assembly Power Supply PCB Assembly Rev A Power Supply PCB Assembly Rev B Power Supply Chassis Assembly Miscellaneous Block Diagram Schematics & Service Diagrams MX-5216 p/n 071-5216-000 MX-5224 p/n 071-5224-000 MX-5232 p/n 071-5232-000 Fender Musical Instruments Corp. 7975 North Hayden Road
3、Scottsdale, AZ 85258 MX-5200 SERIES (This is the model name for warranty claims) OCTOBER 1995 IMPORTANT NOTICE: The information contained herein is CONFIDENTIAL and PROPRIETARY to Fender Musical Instruments Co. It is disclosed solely for use by qualified technicians for purposes of equipment mainten
4、ance 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. Part numbers ending with the three digit suffix 001 indicate a component prepped with long leads. For warranty repair service,
5、 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 asterick (*) indicate the required use of that specific part. This is necessary for RELIABILITY and SAFETY requirements. DO NOT USE A SUBSTITUTE! A c
6、oded 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 ElectrolyticBLX=Black Oxide CAP CA=Ceramic AxialCR=Chrome Plated CAP CD=Ceramic DiskHWH=Hex Washer Head CAP MPF=Metalized Polyester FilmM=Ma
7、chine Screw CAP MY=MylarNI=Nickel Plated CAP PFF=Polyester Film/FoilOHP=Oval Head Phillips PB=Particle Board RESISTOR CODESPHP=Pan Head Phillips PHPS=Pan Head Phillips Sems RES CC=Carbon CompSMA=Sheet Metal A Point RES CF=Carbon FilmSMB=Sheet Metal B Point RES FP=Flame ProofSS=Stainless Steel RES MF
8、=Metal FilmTF=Thread Forming RES WW=Wire WoundZI=Zinc Plated 1 RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS Specifications are subject to change without notice. Frequency Response:20Hz. to 40kHz. 1dB Distortion: 90 dBu (ref. +4 dBu), all channels assigned and at unity gain Microphone Equivalent Input Nois
9、e:-133.8 dBv input shorted, -131.5 dBv 150 ohms source impedance Max. Output Level:+28 dBu on all balanced outputs +22 dBu on all unbalanced outputs Max. Gain:90 dB (Mic input to balanced main output) 84 dB (Mic input to unbalanced sub output) Dynamic Range:116 dB (20 Hz to 20 kHz) Adjacent Channel
10、Crosstalk:-85 dB Mic Input Gain:50 dB Line Input Gain:40 dB Channel Fader Gain:10 dB Channel Fader Attenuation:106 dB Dimensions: Height:6.53 (16.6cm) Width:MX521633 (84cm) MX522442 (107cm) MX523251 (130cm) Depth:24.5 (62.2cm) Weight:MX521639 lbs (17.7 kg) MX522452 lbs (23.6 kg) MX523265 lbs (29.5 k
11、g) CPSM-4 Power Supply:Height:4.75 (12cm) Width:8.5 (21.6cm) Depth:13.125 (33.3cm) Weight:17 lbs (7.7 kg) METER CALIBRATION METER CALIBRATION PROCEDURE Metering of any input or output is provided by two twelve segment LED bargraphs, with VU ballistics. The meter circuit features a peak-hold function
12、, which makes it easier to see the actual peak. The peak-hold function can be disabled by grounding pin 11 of U53 and U63 (LB1412) at P96. Refer to schematic MX52XX MASTER SECTION P/N 047696 sheet 4 of 4. There is one calibration trim pot for each bargraph meter. The trim pots are accessible through
13、 two holes located at the top of the meters. The factory setting is for 0 dBU = 0.775 VRMS. Typical 0 meter levels: 0.775 Vrms (0 dBu)Factory setting (For most applications this is the desired calibration). 1.228 Vrms (+4 dBu)If mostly Pro equipment is connected to the mixer. 0.316 Vrms (-10 dBu)If
14、mostly consumer or semi-pro equipment is connected to the mixer. Inject a 1kHz sine wave at the desired RMS voltage level into the TAPE L, RCA (phono) jack. Make sure none of the mixers Solo switches are engaged. Press the 2 TRACK PLAYBACK switch, located in the CONTROL ROOM section of the Master mo
15、dule. Adjust the trim pot so the first yellow segment of the meter just begins to turn on. Repeat the above procedure for the right meter, using the TAPE R input. IMPORTANT NOTE: When using the meters in conjunction with the various Solo switches, the SOLO LEVEL control must be turned up to maximum.
16、 This is the calibrated position to accurately meter the solo bus level. If the SOLO LEVEL control is not at maximum, the meter reading will be below the real output level of the soloed output. 2 RadioFans.CN 收音机爱 好者资料库 BUS CONFIGURATION AUXILIARY BUS PRE/POST CONFIGURATION The standard factory MX-5
17、200 Auxiliary Bus configuration is: Aux 1/3 routes the post-EQ/post-fader signal to Auxiliary Buses 1 or 3. Aux 2/4 routes the pre-EQ/pre-fader signal to Auxiliary Buses 2 or 4. Internal jumpers allow this configuration to be changed to the following: Post-EQ/post-fader or post-EQ/pre-fader on all A
18、ux sends (1 through 4). Pre-or post-fader on all Aux Sends (1 through 4). In addition, when the channel MUTE switch is engaged, the post-EQ/post-fader signal is muted, but the pre-EQ/pre-fader signal is not. This allows the channel to be cued in the PFL solo system, even if the channel is muted. MON
19、ITOR BUS PRE/POST CONFIGURATION Pre-EQ/pre-fader or post-EQ/post-fader to Monitor 1 and Monitor 2, switch-selectable. Internal jumpers allow this configuration to be changed to the following: Post-EQ/pre-fader or post-EQ/post-fader signal to Monitor 1 and Monitor 2. CHANGING THE PRE/POST CONFIGURATI
20、ON The pre/post jumpers are actually three adjacent solder pads. They are located directly next to the MONITOR PRE/POST switches. The circuit board does not need to be removed from the panel, as the pads are accessible from the solder side of the PC board. A small connecting trace between two of the
21、 pads sets the factory jumper configuration. When changing the factory configuration, the trace must be cut to break the existing connection. To connect the desired pads, simply create a solder bridge across them. The jumpers are labeled (PX3,4,5), and the square pad indicates the number one (1) pad
22、. PX3 selects pre/post EQ and is always pre-fader. PX4 selects between pre/post fader for AUX 2/4. PX5 selects pre/post fader for AUX 1/3. Refer to the Input Channel schematic P/N 047688 sheet 1 of 2 for pin outs. PANEL REMOVAL Remove the top trim piece. The screws are located above the rear patch b
23、ay. Remove the two (2) flathead screws at the top of the panel. Slide the panel towards the patch bay until the lower edge of the panel exits the retaining slot. Lift the panel straight up about 1 inch above the chassis. Raise the bottom (Fader end) of the panel up to a near vertical position. Gentl
24、y rest the top edge of the panel onto the top of the chassis. Use a support stick to hold up the panel similar to the hood of a automobile. *CAUTION* DO NOT RAISE OR LOWER THE BOTTOM OF THE PANEL WITHOUT HOLDING THE TOP OF THE PANEL UP OFF OF THE CHASSIS. PIVOTING THE TOP OF THE PANEL AGAINST THE CH
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