Studer-D19M-mix-sm 维修电路原理图.pdf

Studer D19mDigital System Components1. Technical Description2. Diagrams: D19m Frames3. Diagrams: Input Interface Cards4. Diagrams: Output Interface Cards5. Diagrams: Connector PanelsService InstructionsRadioFans.CN 收音机爱 好者资料库Prepared and edited byCopyright by Studer Professional Audio GmbHStuder Professional Audio GmbHPrinted in SwitzerlandTechnical DocumentationOrder no. 10.27.4803 (Ed. 0304)Althardstrasse 30CH-8105 Regensdorf Switzerlandhttp:/www.studer.chSubject to changeStuder is a registered trade mark of Studer Professional Audio GmbH, RegensdorfRadioFans.CN 收音机爱 好者资料库Safety InformationIASafety InformationTo reduce the risk of electric shock, do not remove covers. No user-serviceable parts inside. Refer servicing to qualified service personnel(i.e., persons having appropriate technical training and experience neces-sary to be aware of hazards to which they are exposed in performing arepair action, and of measures to minimize the danger of themselves).This symbol alerts the user to the presence of un-insulated dangerousvoltage within the equipment that may be of sufficient magnitude to con-stitute a risk of electric shock to a person.This symbol alerts the user to important instructions for operating andmaintenance in this documentation.Assemblies or sub-assemblies of this product can contain opto-electronicdevices. As long as these devices comply with Class I of laser or LEDproducts according to EN 60825-1:1994, they will not be expresslymarked on the product. If a special design should be covered by a higherclass of this standard, the device concerned will be marked directly onthe assembly or sub-assembly in accordance with the above standard.A1First AidIn Case of Electric Shock:Separate the person as quickly as possible from the electric powersource: By switching off the equipment, By unplugging or disconnecting the mains cable, or By pushing the person away from the power source, using dry,insulating material (such as wood or plastic). After having suffered an electric shock, always consult a doctor.Warning!Do not touch the person or his clothing before the power is turnedoff, otherwise you stand the risk of suffering an electric shock aswell!If the Person is Unconscious: Lay the person down Turn him to one side Check the pulse Reanimate the person if respiration is poor Call for a doctor immediately.CLASS ILASER PRODUCTCLASS ILED PRODUCTInstallation/Maintenance/ESDII BGeneral Installation InstructionsPlease consider besides these general instructions also any product-specificinstructions in the “Installation” chapter of this manual.B1UnpackingCheck the equipment for any transport damage. If the unit is mechanicallydamaged, if liquids have been spilled or if objects have fallen into the unit,it must not be connected to the AC power outlet, or it must be immediatelydisconnected by unplugging the power cable. Repair must only be per-formed by trained personnel in accordance with the applicable regulations.B2Installation SiteInstall the unit in a place where the following conditions are met: The temperature and the relative humidity of the environment must bewithin the specified limits during operation of the unit. Relevant valuesare the ones at the air inlets of the unit. Condensation must be avoided. If the unit is installed in a location withlarge variation of ambient temperature (e.g. in an OB-van), appropriateprecautions must be taken before and after operation (for details on thissubject, refer to Appendix 1). Unobstructed air flow is essential for proper operation. Air vents of theunit are a functional part of the design and must not be blocked in anyway during operation (e.g. by objects placed upon them, placement ofthe unit on a soft surface, or installation of the unit within a rack orpiece of furniture). The unit must not be heated up by external sources of heat radiation(sunlight, spot lights).B3Earthing and Power SupplyEarthing of units with mains supply (class I equipment) is performed viathe protective earth (PE) conductor integrated in the mains cable. Unitswith battery operation ( 60 V, class III equipment) must be earthed sepa-rately.Earthing the unit is one of the measures for protection against electricalshock hazard (dangerous body currents). Hazardous voltage may not onlybe caused by a defective power supply insulation, but may also be intro-duced by the connected audio or control cables.If the unit is installed with one or several external connections, its earthingmust be provided during operation as well as while the unit is not operated.If the earthing connection can be interrupted, for example, by unpluggingthe mains plug of an external power supply unit, an additional, permanentearthing connection must be installed using the provided earth terminal.Avoid ground loops (hum loops) by keeping the loop surface as small aspossible (by consequently guiding the earth conductors in a narrow, paral-lel way), and reduce the noise current flowing through the loop by insertingan additional impedance (common-mode choke).ESD/RepairIIIClass I Equipment (Mains Operation)Should the equipment be delivered without a matching mains cable, thelatter has to be prepared by a trained person using the attached female plug(IEC320/C13 or IEC320/C19) with respect to the applicable regulations inyour country.Before connecting the equipment to the AC power outlet, check that thelocal line voltage matches the equipment rating (voltage, frequency) withinthe admissible tolerance. The equipment fuses must be rated in accordancewith the specifications on the equipment.Equipment supplied with a 3-pole appliance inlet (protection conforming toclass I equipment) must be connected to a 3-pole AC power outlet so thatthe equipment cabinet is connected to the protective earth.For information on mains cable strain relief please refer to Appendix 2.Female Plugs (IEC320), Front-Side View:European Standard(CENELEC)North American Standard(NAS)BrownL (Live)BlackBlueN (Neutral)WhiteGreen/YellowPE (Protective Earth)Green (or Green/Yellow)Class III Equipment (Battery Operation up to 60 VDC)Equipment of this protection class must be earthed using the provided earthterminal, if one or more external signals are connected to the unit (see ex-planation at the beginning of this paragraph).B4Electromagnetic Compatibility (EMC)The unit conforms to the protection requirements relevant to electromag-netic phenomena that are listed in guidelines 89/336/EC and FCC, part 15. The electromagnetic interference generated by the unit is limited in sucha way that other equipment and systems can be operated normally. The unit is adequately protected against electromagnetic interference sothat it can operate properly.The unit has been tested and conforms to the EMC standards of the speci-fied electromagnetic environment, as listed in the following declaration.The limits of these standards ensure protection of the environment and cor-responding noise immunity of the equipment with appropriate probability.However, a professional installation and integration within the system areimperative prerequisites for operation without EMC problems.For this purpose, the following measures must be followed: Install the equipment in accordance with the operating instructions. Usethe supplied accessories. In the system and in the vicinity where the equipment is installed, useonly components (systems, equipment) that also fulfill the EMC stan-dards for the given environment. Use a system grounding concept that satisfies the safety requirements(class I equipment must be connected with a protective ground conduc-Installation/Maintenance/ESDIV tor) and that also takes into consideration the EMC requirements. Whendeciding between radial, surface, or combined grounding, the advan-tages and disadvantages should be carefully evaluated in each case. Use shielded cables where shielding is specified. The connection of theshield to the corresponding connector terminal or housing should have alarge surface and be corrosion-proof. Please note that a cable shieldconnected only single-ended can act as a transmitting or receiving an-tenna within the corresponding frequency range. Avoid ground loops or reduce their adverse effects by keeping the loopsurface as small as possible, and reduce the noise current flowingthrough the loop by inserting an additional impedance (e.g. common-mode choke). Reduce electrostatic discharge (ESD) of persons by installing an appro-priate floor covering (e.g. a carpet with permanent electrostatic fila-ments) and by keeping the relative humidity above 30%. Further meas-ures (e.g. conducting floor) are usually unnecessary and only effective ifused together with corresponding personal equipment. When using equipment with touch-sensitive operator controls, pleasetake care that the surrounding building structure allows for sufficientcapacitive coupling of the operator. This coupling can be improved byan additional, conducting surface in the operators area, connected to theequipment housing (e.g. metal foil underneath the floor covering, carpetwith conductive backing).CMaintenanceAll air vents and openings for operating elements (faders, rotary knobs)must be checked on a regular basis, and cleaned in case of dust accumula-tion. For cleaning, a soft paint-brush or a vacuum cleaner is recommended.Cleaning the surfaces of the unit is performed with a soft, dry cloth or asoft brush.Persistent contamination can be treated with a cloth that is slightly humidi-fied with a mild cleaning solution (soap-suds).For cleaning display windows, commercially available computer/TVscreen cleaners are suited. Use only a slightly damp (never wet) cloth.Never use any solvents for cleaning the exterior of the unit! Liquids mustnever be sprayed or poured on directly!For equipment-specific maintenance information please refer to the corre-sponding chapter in the Operating and Service Instructions manuals.DElectrostatic Discharge during Maintenance and RepairCaution: Observe the precautions for handling devices sensitive to electrostatic dis-charge!Many semiconductor components are sensitive to electrostatic discharge(ESD). The life-span of assemblies containing such components can bedrastically reduced by improper handling during maintenance and repairwork. Please observe the following rules when handling ESD sensitivecomponents: ESD sensitive components should only be stored and transported in thepacking material specifically provided for this purpose. When performing a repair by replacing complete assemblies, the re-moved assembly must be sent back to the supplier in the same packingESD/RepairVmaterial in which the replacement assembly was shipped. If this shouldnot be the case, any claim for a possible refund will be null and void. Unpacked ESD sensitive components should only be handled in ESDprotected areas (EPA, e.g. area for field service, repair or service bench)and only be touched by persons who wear a wristlet that is connected tothe ground potential of the repair or service bench by a series resistor.The equipment to be repaired or serviced as well as all tools and electri-cally semi-conducting work, storage, and floor mats should also be con-nected to this ground potential. The terminals of ESD sensitive components must not come in uncon-trolled contact with electrostatically chargeable (voltage puncture) ormetallic surfaces (discharge shock hazard). To prevent undefined transient stress of the components and possibledamage due to inadmissible voltages or compensation currents, electri-cal connections should only be established or separated when theequipment is switched off and after any capacitor charges have decayed.ERepairRemoval of housing parts, shields, etc. exposes energized parts. For thisreason the following precautions must be observed: Maintenance may only be performed by trained personnel in accordancewith the applicable regulations. The equipment must be switched off and disconnected from the ACpower outlet before any housing parts are removed. Even if the equipment is disconnected from the power outlet, parts withhazardous charges (e.g. capacitors, picture tubes) must not be toucheduntil they have been properly discharged. Do not touch hot components(power semiconductors, heat sinks, etc.) before they have cooled off. If maintenance is performed on a unit that is opened and switched on, noun-insulated circuit components and metallic semiconductor housingsmust be touched, neither with your bare hands nor with un-insulatedtools.Certain components pose additional hazards: Explosion hazard from lithium batteries, electrolytic capacitors andpower semiconductors (watch the components polarity. Do not shortbattery terminals. Replace batteries only by the same type). Implosion hazard from evacuated display units. Radiation hazard from laser units (non-ionizing), picture tubes (ioniz-ing). Caustic effect of display units (LCD) and components containing liquidelectrolyte.Such components should only be handled by trained personnel who areproperly protected (e.g. safety goggles, gloves).Repair/DisposalVI E1SMD ComponentsStuder has no commercially available SMD components in stock for serv-ice purposes. For repair, the corresponding devices have to be purchasedlocally. The specifications of special components can be found in the serv-ice manual.SMD components should only be replaced by skilled specialists using ap-propriate tools. No warranty claims will be accepted for circuit boards thathave been damaged. Proper and improper SMD soldering joints are illus-trated below.FDisposalDisposal of Packing MaterialsThe packing materials have been selected with environmental and disposalissues in mind. All packing material can be recycled. Recycling packingsaves raw materials and reduces the volume of waste.If you need to dispose of the transport packing materials, please try to userecyclable means.Disposal of Used EquipmentUsed equipment contains valuable raw materials as well as materials thatmust be disposed of professionally. Please return your used equipment viaan authorized specialist dealer or via the public waste disposal system, en-suring any material that can be recycled is.Please take care that your used equipment cannot be abused. To avoidabuse, delete sensitive data from any data storage media. After having dis-connected your used equipment from the mains supply, make sure that themains connector and the mains cable are made useless.32DismountingMountingExamples SolderSMDComponentCopper TrackAdhesiveSoldering IronDesolderingIronDesolderWick Heat and RemoveCleaningSolder 0.5.0.8 mmHeating Time 3 s per SideSolderingIronDesolder Wick 1321 PCBConformityVIIGDeclarations of ConformityG1Class A Equipment - FCC NoticeThis equipment has been tested and found to comply with the limits for aClass A digital device, pursuant to Part 15 of the FCC Rules. These limitsare designed to provide a reasonable protection against harmful interfer-ence when the equipment is operated in a co