Sony-AVDC70ES-rec-sm 维修电路原理图.pdf

1Model Name Using Similar MechanismNEWBase Unit NameDVBU18Optical Pick-up NameTDP022WSERVICE MANUALUS ModelCanadian ModelAVD-C70ESSUPER AUDIO CD/DVD RECEIVERSPECIFICATIONSAUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTAL HARMONIC DISTORTION:With 6 ohm loads, both channels driven, from 20 20,000 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 (6 ohms, 20 20,000 Hz, THD 0.7 %)Surround modeFront: 120 W + 120 WCenter*: 120 WRear*: 120 W + 120 W (6 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:Sensitibity: DIGITAL IN COAXIAL:Sensitibity: 0.5 VImpedance: 75 ohmsOutputs (Analog)ANALOG OUT:Voltage: 2 VImpedance: 1 kilohmsSUBWOOFER ANALOG OUT:Voltage: 3 VImpedance: 47 kilohmsPHONES:Accepts low- and high-impedance headphonesOutputs (Digital)DIGITAL OPTICAL OUTSensitibity: Continued on next page Ver 1.0 2002. 08Sony CorporationHome Audio CompanyPublished by Sony Engineering Corporation9-874-155-012002H0400-1 2002. 08RadioFans.CN 收音机爱 好者资料库2Super Audio CD/DVD systemLaserSemiconductor laser(Super Audio CD/DVD: = 650 nm)(CD: = 780 nm)Emission duration: continuousSignal format systemNTSCFrequency response (at 2 CH STEREO mode)DVD (PCM): 2 Hz to 22 kHz (1.0 dB)CD: 2 Hz to 20 kHz (1.0 dB)Signal-to-noise ratioMore than 80 dB (VIDEO 1 (AUDIO) connectors only)Harmonic distortionLess than 0.03 %FM 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 sectionSystemPLL 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 sectionInputsS-video:Y: 1 Vp-p 75 ohmsC: 0.286 Vp-p 75 ohmsOutputsS-video:Y: 1 Vp-p 75 ohmsC: 0.286 Vp-p 75 ohmsGeneralPower requirements120 V AC, 60 HzPower consumption180 W1.5 W(at the Power Saving Mode)Dimensions (approx.)430 135.5 455 mm (17 5 3/8 18 inches) (w/h/d)incl. projecting partsMass (approx.)9.8 kg (21 lb. 10 oz.)Operating temperature5 C to 35 C (41 F to 95 F)Operating humidity5 % to 90 %Design and specifications are subject to change without notice.AVD-C70ESSELF DIAGNOSIS FUNCTIONNote: Refer to the “4.TEST MODE” (page 16) for another self-diagnosis function.RadioFans.CN 收音机爱 好者资料库3SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED 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 correcting 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 exposed 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 manufacturers 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 meters 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 UNE 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.AVD-C70ESNotes on Chip Component Replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam-aged by 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 controls or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth Ground4TABLE OF CONTENTSSELF DIAGNOSIS FUNCTION.21. SERVICING NOTES. 52. GENERALLocation of Controls. 63. DISASSEMBLY. 93-1. Case . 103-2. Front Panel Assy . 103-3. Back Panel Assy . 113-4. DVD Board, Power Board, Digital Amp Board . 113-5. Boards Section . 123-6. Table Assy . 123-7. Analog I/O Board, DVD Mechanism Block . 133-8. Chassis Assy. 133-9. Display Board . 143-10. Sensor Board, Belt (RM), Motor Assy (Rotary) . 143-11. Belt (Timing), Motor Assy (B). 153-12. RF Board, Pick-up Unit . 154. TEST MODE. 165. DIAGRAMS5-1. IC Pin Function Description . 235-2. Circuit Boards Location . 415-3. Note for Printed Wiring Boards and Schematic Diagrams. 425-4. Printed Wiring Board RF Section . 445-5. Schematic Diagram RF Section . 455-6. Printed Wiring Board DVD Section . 465-7. Schematic Diagram DVD Section (1/10). 485-8. Schematic Diagram DVD Section (2/10). 495-9. Schematic Diagram DVD Section (3/10). 505-10. Schematic Diagram DVD Section (4/10). 515-11. Schematic Diagram DVD Section (5/10). 525-12. Schematic Diagram DVD Section (6/10). 535-13. Schematic Diagram DVD Section (7/10). 545-14. Schematic Diagram DVD Section (8/10). 555-15. Schematic Diagram DVD Section (9/10). 565-16. Schematic Diagram DVD Section (10/10). 575-17. Printed Wiring Board Digital Amp Section . 585-18. Schematic Diagram Digital Amp Section (1/2) . 605-19. Schematic Diagram Digital Amp Section (2/2) . 615-20. Printed Wiring Board Video Section. 625-21. Schematic Diagram Video Section. 635-22. Printed Wiring Boards In/Out Section . 645-23. Schematic Diagram In/Out Section. 655-24. Printed Wiring Boards Display Section . 665-25. Schematic Diagram Display Section. 675-26. Printed Wiring Boards Panel Section . 685-27. Schematic Diagram Panel Section . 695-28. Printed Wiring Board Speaker Section . 705-29. Schematic Diagram Speaker Section . 715-30. Printed Wiring Boards Power Section. 725-31. Schematic Diagram Power Section . 735-32. IC Block Diagrams. 746. EXPLODED VIEWS6-1. Case Section . 846-2. Front Panel Section . 856-3. Back Panel Section. 866-4. Boards Section . 876-5. Mechanism Section (1) . 886-6. Mechanism Section (2) . 896-7. Mechanism Section (3) . 906-8. Base Unit Section. 917. ELECTRICAL PARTS LIST.92AVD-C70ES5AVD-C70ESSECTION 1SERVICING NOTESNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITThe laser diode in the optical pick-up block may suffer electro-static break-down because of the potential difference generatedby the charged electrostatic load, etc. on clothing and the humanbody.During repair, pay attention to electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair parts.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 focusedon the disc reflective surface by the objective lens in the opticalpick-up block. Therefore, when checking the laser diode emis-sion, observe from more than 30 cm away from the objective lens.JIG ON REPAIRINGWhen repairing this set, etc., connect the extension cable as thefigure shown below.J-2501-217-ARF boardDVD board6AVD-C70ESSECTION 2GENERALThis section is extractedfrom instruction manual.LOCATION OF CONTROLS7AVD-C70ES8AVD-C70ES9AVD-C70ESSECTION 3DISASSEMBLYNote: This set can be disassemble according to the following sequence.3-1.CASE(Page 10)3-2.FRONT PANEL ASSY(Page 10)SET3-3.BACK PANEL ASSY(Page 11)3-4.DVD BOARD,POWER BOARD,DIGITAL AMP BOARD(Page 11)3-12. RF BOARD,PICK-UP UNIT(Page 15)3-5.BOARDS SECTION(Page 12)3-6.TABLE ASSY(Page 12)3-8.CHASSIS ASSY(Page 13)3-11. BELT (TIMING),MOTOR ASSY (B)(Page 15)3-9.DISPLAY BOARD(Page 14)3-10. SENSOR BOARD,BELT (RM),MOTOR ASSY (ROTARY)(Page 14)3-7.ANALOG I/O BOARD,DVD MECHANISM BLOCK(Page 13)10AVD-C70ESNote: Follow the disassembly procedure in the numerical order given.3-1. CASE3-2. FRONT PANEL ASSY1two screws(flat head screw)2two screws(flat head screw)3three screws(screw (BV/RING)4case4three screws(screw (BV/RING)6front panel assy5four screws(BVTP 3x8)1CN0052CNP9043CNP90511AVD-C70ES3-3. BACK PANEL ASSY3-4. DVD BOARD, POWER BOARD, DIGITAL AMP BOARD0screw(screw (BV/RING)qascrew(screw (BV/RING)qsscrew(screw (BV/RING)qdthree screws(screw (BV/RING)3CNP9035CN3086CN3077CN3068CN3059CN3041CN0032CN0024CN312qfback panel assy6two screws(BVTP 3x8)0three screws(BVTP 3x8)qdinsulating sheet (PWB)qatwo screws(BVTP 3x8)qhtwo screws(BVTP 3x8)qgthree screws(BVTP 3x8)qjDIGITAL AMP boardqsPOWER board5two screws(BVTP 3x10)7DVD board1CN0079CN3018CN3002CN4014CN0083CN001qfCN30912AVD-C70ES3-5. BOARDS SECTION3-6. TABLE ASSY4four screws(BVTP 3x8)5four screws(BVTP 3x8)6boards section1CN0072CN4013CN3091two screws(BVTP 3x8)4two screws(BVTP 3x8)5bracket(guide B1)8bracket(guide B1)9bracket(guide B1)qaCN914qstable assy06bracket(guide B1)7two screws(BVTP 3x8)2two screws(BVTP 3x8)3bracket (CP)13AVD-C70ES3-7. ANALOG I/O BOARD, DVD MECHANISM BLOCK3-8. CHASSIS ASSY2screw (BVTP 3x8)3sheet (protection)4screw (BVTP 3x8)7screw (M 3x12)8DVD mechanism block9CN0025ANALOG I/O board1CN9136CN9111two screws(BVTP 3x8)4chassis assy2three screws(BVTP 3x8)3three screws(BVTP 3x8)14AVD-C70ES3-9. DISPLAY BOARD3-10. SENSOR BOARD, BELT (RM), MOTOR ASSY (ROTARY)2three screws(BVTP 3x10)3cover FC4CN9025DISPLAY boardclaw1panel (loading) assy4two screws(BVTP 3x8)6two screws(BVTP 3x8)8two screws(B 2.6x3)9belt (RM)0motor assy (rotary)qsT-125 boardqaRemoval the solders.7bracket (rotary) assy5SENSOR board1screw (M 3x12)2table (rotary)3CN96215AVD-C70ES3-11. BELT (TIMING), MOTOR ASSY (B)3-12. RF BOARD, PICK-UP UNIT3two screws(BVTP 3x8)4motor assy (B)6MOTOR board5Removal the solders.claw1pulley (flange B)2belt (timing)2two screws(BTTP M2.6)3RF board1CN0034CN0016screw(step screw (M)7pick-up unitholder (73) assy5two screws(step screw (M)16AVD-C70ESSECTION 4TEST MODEGENERAL DESCRIPTIONThe Test Mode allows you to make diagnosis and adjustment easilyusing the remote commander and monitor TV. The instructions,diagnostic results, etc. are given on the on-screen display (OSD).STARTING TEST MODE1.Press the POWER button to turn the power on, and set thefunction to DVD.2.While pressing thexand DISPLAY button, turn theVOLUME knob clockwise to enter the test mode.3.It displays “TEST MODE” on the fluorescent indicator tube,and displays the Test Mode Menu on the monitor screen asfollows. (At the bottom of the menu screen, the model nameand revision number are displayed)Test Mode Menu0. Syscon Diagnosis1. Drive Auto Adjustment2. Drive Manual Operation3. Mecha Aging4. Emergency History5. Version Information6. Video Level AdjustmentExit: POWER KeyModel :DAV-CxxxRevision :x.xx4.To execute each function, select the desired menu and press itsnumber on the remote commander (RM-SS880J).5.To release from test mode, press the POWER button and turnthe power off.OPERATING TEST MODE0.SYSCON DIAGNOSISThe same contents as board detail check by serial interface can bechecked from the remote commander operation.On the Test Mode Menu screen, press 10/0 key on the remotecommander, and the following Check Menu will be displayed.# Syscon Diagnosis #Check Menu0. Quit1. All2. Version3. EEPROM4. SPIO5. SD Bus6. Video7. Audio0-0. QuitQuit the Syscon Diagnosis and return to the Test Mode Menu.0-1. All (All items continuous check)This menu checks all diagnostic items continuously. Normally, allitems are checked successively one after another automaticallyunless an error is found, but at a certain item that requires judgmentthrough a visual check to the result, the following screen is displayedfor the key entry. Example display# Syscon Diagnosis #Diag All CheckNo.2 Version2-3. ROM Check SumCheck Sum = 2320Press NEXT Key to ContinuePress PREV Key to RepeatFor the ROM Check, the check sum calculated by the Syscon isoutput, and therefore you must compare it with the specified valuefor confirmation.Following the message, press the NEXT button to go to thenext item, or press the PREV button to repeat the sameoperation again.To quit the diagnosis and return to Check Menu screen, press theRETURN key on the remote commander to display Check Menu. Error occurredIf an error occurred, the diagnosis is suspended and error is displayed.Press the RETURN key on the remote commander to quit thediagnosis, or press the PREV button to repeat the same checkwhere an error occurred, or press the NEXT button to continuethe check from the item next to faulty item.General Description of Checking MethodSelecting 2 and subsequent items calls the submenu screen of eachitem. And selecting 2 and subsequent items executes respectivemenus and outputs the results.For the contents of each submenu, see “Check Items List” as below.Check Items List:0-2.Version0-2-1.All0-2-2.Revision0-2-3.ROM Check Sum0-2-4.Model Type0-2-5.Region0-3.EEPROM Check0-3-1.Sampling Check0-3-2.Detail Check0-4.GP I/O Check0-5.SD Bus Check0-6.Video Check0-7.Audio Check0-2. Version0-2-2. RevisionThe revision number of ROM (IC204) that the program forthe DVD system processor (IC206) is stored.(4 digits hexadecimal number)0-2-3. ROM Check SumThe revision number of ROM (IC204) that the program forthe DVD system processor (IC206) is stored.0-2-4. Model TypeModel name is displayed. (DAV-C770 or DAV-C990).17AVD-C70ES0-2-5. RegionModel destination code is displayed. (2 digits number)0-3. EEPROM Check0-3-1. Sampling CheckEEPROM check at every 64 words.It compares read data with write data of each address. Whenthere are discrepancies between two data, it displays error.0-3-2. Detail CheckEEPROM check at every 1 word.It compares read data with write data of each address. Whenthere are discrepancies between two data, it displays error.0-4. GP I/O CheckPull up/down setting check of the DVD system processor (IC206)pin 150, 151 and 154 (for clock setting port).0-5. SD Bus CheckSD bus data check between DVD decoder (IC701) and D-RAM(IC706).0-6. Video CheckOutput the color bars for video level adjustment.0-7. Audio C