Mackie_d8b_Service_Manual电路图.pdf

《Mackie_d8b_Service_Manual电路图.pdf》由会员分享，可在线阅读，更多相关《Mackie_d8b_Service_Manual电路图.pdf（117页珍藏版）》请在收音机爱好者资料库上搜索。

1、1999 Mackie Designs Inc. #820-182-00 DIGITAL 8BUS SERVICE MANUAL 56 input, fully-automated digital mixing console. RadioFans.CN 收音机爱 好者资料库 This file contains all 110 pages of 8.5 x 11 (to make it easier to print out) D8B HOME 2 CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQU

2、E NE PAS OUVRIR CAUTION: TO R EDU CE THE RISK OF ELEC TRIC SHO CK D O NOT REMOVE THE C OVER (OR BAC K) NO USER SER VICEABLE PAR TS INSIDE REFER SER VICING TO QU ALIFIED PERSON N EL W ARNING: TO REDU CE THE R ISK OF FIRE OR ELECTRIC SHOCK, D O NOT EXPO SE THIS PROD UC T TO R AIN OR MO IS TU R E TO PR

3、EVENT ELECTRIC SH OCK, D O NOT U SE THIS POLARIZED PLU G W ITH AN EXTENSION C ORD , R ECEPTAC LE O R OTH ER O UTLET UNLESS TH E BLAD ES CAN BE FULLY INSER TED TO PREVENT BLADE EXPOSURE. ATTENTION: POUR EVITER LES RISQ UES DE C HOC ELECTRIQU E, NE PAS ENLEVER LE CO UVERC LE. AU CU N EN TR ETIEN DE PI

4、ECES INTERIEURES PAR L USAGER. C ON FIER L ENTRETIEN AU PER SONNEL QUALIFIE. AVIS:POUR EVITER LES RISQUES DINCENDIE O U DELECTROCUTIO N, NEXPOSEZ PAS CET ARTICLE A LA PLUIE O U A LHUMIDITE. POUR PREVENIR LES CH OC S ELECTRIQU ES N E PAS UTILISER CETTE FICHE POLARISEE AVEC UN PR OLONGATEUR , UN PRISE

5、 DE CO UR ANT OU UN E AUTRE SO RTIE D E COU RANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS LAISSER AUCUN E PARTIE A DECO UVERT. This apparatus does not exceed the Class A/Class B (whichever is applicable) lim its for radio noise em issions from digital apparatus as set out in the radio in

6、terference regulations of the Canadian Departm ent of Com m unications. ATTENTION :Le prsent appareil num rique nm et pas de bruits radiolectriques dpassant las lim ites applicables aux appareils num riques de class A/de class B (selon le cas) prescrites dans le rglem ent sur le brouillage radiolect

7、rique dict par les m inistere des com m unications du Canada. This equipm ent has been tested and found to com ply with the lim its for a Class A digital device, pursuant to part 15 of the FCC rules. These lim its are designed to provide reasonable protection against harm ful interference when the e

8、quipm ent is operated in a com m ercial environm ent. This equipm ent generates, uses, and can radiate radio energy and, if not installed properly and used in accordance with the instruction m anual, m ay cause harm ful interference to radio com m unications. Operation of this equipm ent in a reside

9、ntial area is likely to cause harm ful interference in which case the user will be required to correct the interference at his own expense. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within t

10、he products enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. Le symbole clair avec point de flche lintrieur dun triangle quilatral est utilis pour alerter lutilisateur de la prsence lintrieur du coffret de voltage dangereux non isol dampleur suffisant

11、e pour constituer un risque dlctrocution. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point dexclamation lintrieur dun triangle quil

12、atral est employ pour alerter les utilisateurs de la prsence dinstructions importantes pour le fonctionnement et lentretien (service) dans le livret dinstruction accompagnant lappareil. RadioFans.CN 收音机爱 好者资料库 3 Additional Safety Information Mackie Designs Digital 8Bus has been tested and conforms t

13、o the following standards and directives of the European Council: 73/23/EECLow Voltage Directive with amendments 91/263/EEC, 89/392/EEC, and 89/336/EEC 89/336/EECEMC Directive IEC 950(1991)/EN60950:1992Electrical Safety Requirements EN55103-1 and EN55103-2Residential (E1) and Commercial (E2) Environ

14、ments Note: The following notice concerns the lithium battery located on the motherboard inside the Remote CPU. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES ACCORDING TO THE M

15、ANUFACTURERS INSTRUCTIONS. ATTENTION: IL Y A DANGER DEXPLOSION SIL Y A REMPLACEMENT INCORRECT DE LA BATTERIE, REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MEME TYPE OU DUN TYPE QUIVALENT RECOMMAND PAR LE CONSTRUCTEUR. METTRE AU REBUT LES BATTERIES USAGES CONFORMMENT AUX INSTRUCTIONS DU FABRICANT. WARNI

16、NG Service on the d8b must only be undertaken by experienced service technicians. ! SMD ! The d8b makes extensive use of surface mount components. Servicing technicians should have the tools, experience and patience to perform surface mount rework. ! ESD ! The d8b contains components that may be dam

17、aged by elecrostatic discharge. All standard ESD precautions must be taken when servicing. RadioFans.CN 收音机爱 好者资料库 4 CONTENTS INTRODUCTION . 5 TECHNICAL SUPPORT . 5 DISCLAIMER. 5 OVERVIEW. 6 COMPUTER SYSTEM . 7 DSP SYSTEM. 9 USER INTERFACE SYSTEM. 11 ANALOG SYSTEMS. 13 POWER. 13 DSP SIGNAL FLOW, CLO

18、CKS, MUTE . 14 PARTS . A-1 INTEGRATED CIRCUITS AND DATA SHEETS LINKS.B-1 CONNECTORS . C-1 FOLD-OUT SECTIONS: BLOCK DIAGRAMS . D1 EXPLODED DRAWINGS. E1 ASSEMBLY DRAWINGS: CONSOLE . F1 ASSEMBLY DRAWINGS: REMOTE CPU.G1 BOARD CHAPTERS (Schematics and PCB for each board) 108A Mic/line meter . 108 109A Li

19、ne/master meter . 109 110BAnalog I/O. 110 111BPower distribution . 111 112C DCA . 112 113BCodec . 113 114C DSP . 114 115EDigital I/O . 115 119BTape I/O. 119 120A Mic/control surface . 120 121A Line/control surface. 121 122A Output control surface. 122 123A Remote CPU linear power supply. 123 124A 8-

20、Way fader . 124 125A 9-Way fader . 125 136A Brain . 136 163C Back plane. 163 164C Clock card . 164 201A Remote CPU power distribution. 201 SAFETY PAGES.2, 3 5 INTRODUCTION This manual contains service information for the d8b digital audio mixer. To service the d8b, technicians should be familiar wit

21、h op-amp based and discrete analog circuitry, digital troubleshooting, microprocessors, digital audio, DSP, ESD, ESP, and the operation/ application of mixing consoles. Presentation of this manual does not constitute endorsement of qualifications by Mackie Designs. This manual is available in Adobe

22、Portable Document Format (PDF), as part of Mackie Designs Digital Service CD-ROM (part# 820-163-00). This is available to all Service centers authorized to repair the d8b. Also included on the CD-ROM are the schematics, PCB layouts, parts lists, assembly drawings, some IC data sheets and the owners

23、manual. It is essential that you become familiar with the owners manual as it contains all of the operational details, hookup diagrams, specifications and just about everything d8bwegian. It will be a great help for you to verify customers complaints, and to check for correct operation. This service

24、 manual does not include an in-depth circuit analysis, rather it provides an overall guide to details not immediately obvious from the schematics alone. It is intended to help you troubleshoot down to board level and identify and swap out any bad circuit boards. Component level troubleshooting down

25、to resistor or IC level, may be undertaken if time permits, or if there appears to be something obvious. SERVICE TECHNICAL ASSISTANCE Mackie Designs, Service Technical Assistance, is available 8AM - 5PM PST, Monday through Friday for Authorized Mackie Service Centers, at 1-800-258-6883. Feel free to

26、 call with any questions and speak with a carefully-calibrated technician. If one is not available, leave a detailed message and a qualified Mackoid will return your call asap. DISCLAIMER The information contained in this manual is proprietary to Mackie Designs, Inc. The entire manual is protected u

27、nder copyright and may not be reproduced by any means without express written permission from Mackie Designs Inc. GETTING STARTED Upon receiving a d8b for repair, your first impression may be to run screaming into the night. After reading this overview, checking the schematics, pcb layouts, assembly

28、 drawings, parts lists, having a good look at the owners manual and inspecting the unit, you will probably realize that your first impression was correct. Think of the remote CPU as a standard PC with extra power supplies for the console. Standard PC troubleshooting techniques and commercially avail

29、able diagnostic DOS software can be applied to repair the remote CPU. In its simplest form, the mixer and the remote CPU are two boxes full of circuit boards, all joined together with lots of connectors and ribbon cables. A preliminary inspection will often reveal a simple problem, such as a bad con

30、nection somewhere, a loose cable, a bad switch or control, or the CPUs CMOS settings may need to be reset. Our technical support team are available to discuss any d8b problems and offer solutions. If you ever suspect that a customers complaint is related to the version of Mackie software they are us

31、ing, you should consult with your customer and Mackie Designs before downloading the latest software from our website: 6 OVERVIEW The Digital functions of the d8b can be broken down into 3 main systems; Computer, DSP, and User Interface. The computer is a Pentium system which is contained in the Rem

32、ote CPU with the Power Supply . It communicates via standard com ports (RS-232) to the DSP and UI systems in the console. The computer runs Mackies real time operating system and handles functions normally associated with a PC such as keyboard, mouse, disk drives, video, etc. The DSP system controls

33、 all Digital Signal Processing functions in the console. The User Interface system reads and updates the control surface. Commands from the UI are looped through the computer. For example, if the Mute button on channel 1 is pressed, the UI system detects it and communicates the event to the computer

34、. The computer then tells the DSP system to mute CH-1, and tells the UI system to light CH-1s mute LED. Note that the LED is not lit by the UI system directly. Commands can also be issued by clicking on the monitor screen (GUI). Note: the DSP communicates the meter information directly to the UI, no

35、t looped through the computer. meters Remote CPU Pentium PC HDD, Floppy, Video DSP A/D D/A converters, 24 on board DSP chips, FX cards, I/O Cards User Interface (control surface) Switches, V-pots, LEDs, Flying Faders, Displays 7 COMPUTER SYSTEM HARDWARE The computer system within the Remote CPU chas

36、sis consists of the following hardware; Computer motherboard Computer microprocessor RAM HDD, FDD Ethernet Card SVGA Video Card MIDI Card, SMPTE These are all standard PC compatible parts. However, because the drivers are written into the Mackie OS, other similar devices may not be compatible. Also,

37、 it should be noted that upgrading the processor, RAM, or HDD is of little value as the Mackie OS will not take advantage of it. EXTRA CIRCUITRY Circuit boards inside the Remote CPU, which are not normally found inside a standard PC are: extra power supplies, AC line and fusing circuits, chicken sou

38、p machine etc. Mackie board 201 is the remote CPUs power distribution Mackie board 123 is a Linear power supply for the consoles analog functions An OEM 5V supply for the consoles digital functions SOFTWARE The d8bs computer runs Mackies real time operating system. THERE IS NO MS-DOS OR WINDOWS IN T

39、HE SYSTEM! You will not find COMMAND.COM, CONFIG.SYS, or AUTOEXEC.BAT anywhere on the hard drive. After the BIOS starts, the system boots directly into the Mackie Operating System. CMOS setup can be accessed as in a regular PC. The Mackie OS also contains the operating software for the DSP and UI sy

40、stems. Most future upgrades can be done without swapping EPROMS. Please talk to our technical support team to discuss the d8b problems you are experiencing. There is a good chance that a customers complaint may be cured by upgrading to the latest sotware version. You will first need the customers pe

41、rmission before downloading any upgrades from our website (). TROUBLESHOOTING THE COMPUTER A common error message you might see is “System Error 43 - Host did not boot.” The possible reason for this may be: The computer did not get through BIOS correctly. A static charge may have reset your BIOS CMOS settings. The data cable between the computer and the console is not connected, or is not a straight through 25 pin din connecter. Possible Solution: Connect a keyboard and monitor and press F1 to enter the computers BIOS