Sony-AVDC700ES-rec-sm 维修电路原理图.pdf
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1、1Model Name Using Similar MechanismNEWMechanism TypeCDM79-DVBU22Optical Pick-up NameTDP022WSERVICE MANUALUS ModelCanadian ModelAVD-C700ESSUPER AUDIO CD/DVD RECEIVERSPECIFICATIONSAUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTAL HARMONIC DISTORTION:With 8 ohm loads, both channels driven, from 20 20,00
2、0 Hz; rated120 watts per channel minimum RMS power, with no more than 0.7 %total harmonic distortion from 250 milliwatts to rated output.Amplifier sectionStereo mode120 W + 120 W (8/4 ohms, 20 20,000 Hz, THD 0.7 %)Surround modeFront: 120 W + 120 WCenter*: 120 WSurround*: 120 W + 120 WSurround back*:
3、 120 W (8/4 ohms, 20 20,000 Hz,THD 0.7 %)* Depending on the sound field settings and the source, there may be no sound output.Inputs (Analog)ANALOG IN:Sensitivity: 150 mVImpedance: 50 kilohmsInputs (Digital)DIGITAL IN OPTICAL:DIGITAL IN COAXIAL:Impedance: 75 ohmsOutputs (Analog)PHONES:Accepts low- a
4、nd high-impedance headphonesOutputs (Digital)DIGITAL OUT OPTICAL Continued on next page Ver 1.1 2004. 09Sony CorporationAudio GroupPublished by Sony Engineering Corporation9-961-309-022004I04-1 2004. 09RadioFans.CN 收音机爱 好者资料库2SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
5、 LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN SUPPLEMENTS PUBLISHED BY SONY.Fig. A. Using an AC voltmeter to check AC leakage.SAFETY CHECK-OUTAfter correcti
6、ng the original service problem, perform the followingsafety check before releasing the set to the customer:Check the antenna terminals, metal trim, “metallized” knobs, screws,and all other exposed metal parts for AC leakage. Check leakage asdescribed below.LEAKAGE TESTThe AC leakage from any expose
7、d metal part to earth ground andfrom all exposed metal parts to any exposed metal part having areturn to chassis, must not exceed 0.5 mA (500 microamperes).Leakage current can be measured by any one of three methods.1. A commercial leakage tester, such as the Simpson 229 or RCAWT-540A. Follow the ma
8、nufacturers instructions to use theseinstruments.2. A battery-operated AC milliammeter. The Data Precision 245digital multimeter is suitable for this job.3. Measuring the voltage drop across a resistor by means of a VOMor battery-operated AC voltmeter. The “limit” indication is 0.75V, so analog mete
9、rs must have an accurate low-voltage scale. TheSimpson 250 and Sanwa SH-63Trd are examples of a passiveVOM that is suitable. Nearly all battery operated digitalmultimeters that have a 2V AC range are suitable. (See Fig. A)ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UN
10、E MARQUE 0 SUR LESDIAGRAMMES SCHMATIQUES ET LA LISTE DES PICESSONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT.NE REMPLACER CES COMPOSANTS QUE PAR DES PICESSONY DONT LES NUMROS SONT DONNS DANS CE MANUELOU DANS LES SUPPLMENTS PUBLIS PAR SONY.Super Audio CD/DVD systemLaserSemiconductor laser(Super Audi
11、o CD/DVD: = 650 nm)(CD: = 780 nm)Emission duration: continuousSignal format systemNTSCFM tuner sectionSystemPLL quartz-locked digital synthesizer systemTuning range87.5 108.0 MHz (100 kHz step)AntennaFM wire antennaAntenna terminals75 ohms, unbalancedIntermediate frequency10.7 MHzAM tuner sectionSys
12、temPLL quartz-locked digital synthesizer systemTuning range530 1,710 kHz (with the interval set at 10 kHz)531 1,710 kHz (with the interval set at 9 kHz)AntennaLoop antennaIntermediate frequency450 kHzVideo sectionInputsVideo: 1 Vp-p 75 ohmsS-video:Y: 1 Vp-p 75 ohmsC: 0.286 Vp-p 75 ohmsOutputsVideo:
13、1 Vp-p 75 ohmsS-video:Y: 1 Vp-p 75 ohmsC: 0.286 Vp-p 75 ohmsComponent:Y: 1 Vp-p 75 ohmsPB/CB: 0.65 Vp-pPR/CR: 0.65 Vp-pGeneralPower requirements120 V AC, 60 HzPower consumption180 W1 W(at the Power Saving Mode)Dimensions (approx.)430 136 448 mm (17 5 3/8 17 3/4 inches) (w/h/d)incl. projecting partsM
14、ass (approx.)9.7 kg (21 lb. 7 oz.)Operating temperature5 C to 35 C (41 F to 95 F)Operating humidity5 % to 90 %Supplied accessoriesAM loop antenna (1)FM wire antenna (1)S Video cord (1)Remote Commander (remote) RM-CL700M (1)R6 (size AA) batteries (2)Operating instructions (1)Design and specifications
15、 are subject to change without notice.AVD-C700ES1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundRadioFans.CN 收音机爱 好者资料库3AVD-C700ESNotes on Chip Component Replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam-aged by
16、 heat.Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C duringrepairing. Do not touch the soldering iron on the same conductor of thecircuit board (within 3 times). Be careful not to apply force on the conductor when solderingor unsoldering.CAUTIONUse of control
17、s or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.Unleaded solderBoards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead.(Caution: Some printed circuit boards may n
18、ot come printed withthe lead free mark due to their particular size): LEAD FREE MARKUnleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher thanordinary solder.Ordinary soldering irons can be used but the iron tip has to beapplied to the solder joi
19、nt for a slightly longer time.Soldering irons using a temperature regulator should be set to about350 C.Caution: The printed pattern (copper foil) may peel away if theheated tip is applied for too long, so be careful! Strong viscosityUnleaded solder is more viscou-s (sticky, less prone to flow) than
20、ordinary solder so use caution not to let solder bridges occur suchas on IC pins, etc. Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder may alsobe added to ordinary solder.NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITThe laser diode in the optical pick-
21、up block may suffer electrostaticbreak-down because of the potential difference generated by thecharged electrostatic load, etc. on clothing and the human body.During repair, pay attention to electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair part
22、s.The flexible board is easily damaged and should be handled withcare.NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as to be focused onthe disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emissio
23、n,observe from more than 30 cm away from the objective lens.DISC TRAY LOCKThe disc tray lock function for the antitheft of an demonstrationdisc in the store is equipped.Releasing Procedure:1. Press two buttons of FUNCTION and PREVsimultaneously.2. The message “UNLOCKED” is displayed and the tray isu
24、nlocked.Note:When “LOCKED” is displayed, the tray lock is not releasedby turning power on/off with the POWER button.Ver 1.1LASER DIODE AND FOCUS SEARCH OPERATIONCHECKCarry out the “S curve check” in “DVD section adjustment” andcheck that the S curve waveforms is output three times.NOTE OF REPLACING
25、THE MB BOARDWhen replacing the MB board, since the adjustment value is not setup correctly, “Drive Auto Adjustment” cant be performed.In this case, initialize Memory in the following procedures.Procedure:1. Set the test mode. (See page 20)2. Press the 2 key of the remote commander, and set the “DRIV
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