Zenith-DVT316-cd-sm电路图 维修手册.pdf

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1、RadioFans.CN 收音机爱 好者资料库 - 1-1 - SECTION 1. GENERAL SERVICING PRECAUTIONS.1-2 ESD PRECAUTIONS.1-4 SPECIFICATIONS.1-5 LOCATION OF CUSTOMER CONTROLS.1-6 SECTION 2. AUDIO PART BLOCK DIAGRAM.2-1 SCHEMATIC DIAGRAMS.2-3 WIRING DIAGRAM.2-15 VOLTAGE SHEET (IC&TR) . 2-17 PRINTED CIRCUIT DIARGAMS.2-21 SECTION

2、3. DVD PART DVD PART ELECTRICAL TROUBLESHOOTING GUIDE .3-1 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING . 3-8 DVD PART SCHEMATIC DIAGRAMS.3-21 VOLTAGE SHEET (IC & TR).3-27 PRINTED CIRCUIT DIAGRAM.3-29 SECTION 4. EXPLODED VIEWS.4-1 SECTION 5. SPEAKER PART.5-1 SECTION 6. REPLACEMENT PARTS LIST.6

3、-1 CONTENTS RadioFans.CN 收音机爱 好者资料库 SECTION 1. GENERAL PART SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external

4、 pressure or impact. 2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or i

5、mpact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beam

6、s may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged. 5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush

7、(such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort this. 6) Never attempt to disassemble the pick-up. Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alc

8、ohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up. - 1-2 - Storage in conductive bagDrop impact NEVER look directly at the laser beam, a

9、nd dont let contact fingers or other exposed skin. Magnet How to hold the pick-up Pressure Pressure Cotton swab Conductive Sheet RadioFans.CN 收音机爱 好者资料库 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diod

10、e). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision compone

11、nts. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust. 2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All eq

12、uipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.

13、) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1M) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape fro

14、m the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. - 1-3 - Armband Conductive Sheet Resistor (1 Mohm) Resistor (1 Mohm) ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by st

15、atic electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of compon

16、ent damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap de

17、vice, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the a

18、ssembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as anti-static can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals.

19、 These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam,

20、 aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO TH

21、E CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricit

22、y sufficient to damage an ESD device). CAUTION. GRAPHIC SYMBOLS - 1-4 - THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF

23、 ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. - 1-5 - SPECIFICATIONS ? ? - 1-6 - LOCATION OF CUSTOMER CONTROLS FRONT PANEL DISPLAY WINDOW - 1-7 - REAR PANEL - 1-8

24、 - AUDIO ELECTRICAL TROUBLESHOOTING GUIDE INSERT POWER CORD. TURN ON THE RED LED? IS POWER ON? CHECK POWER PLUG AND POWER SUPPLY CIRCUIT . DOES INITIAL READ WORK? DOES IT PLAY? YES NO YES YES OK NO YES NO NO CHECK POWER SUPPLY CIRCUIT . CHECK LASER CIRCUIT . CHECK TRACKING SERVO CIRCUIT. TURN POWER

25、ON. CHECK FOCUS CIRCUIT. CHECK DISC. DOES IT OUTPUT AUDIO? YES NO CHECK AUDIO CIRCUIT. 1.1.1.1. - 1-9 - 2. AUDIO . COM CIRCUIT POWER ON Does CD/DVD appear at FLT? Does LOADING appear at FLD? Does it appear DVD Error at FLD? Does Video1/2, TV AUDIO, FM 87.5 appear at FLD? OK. Check Connector(PN903)if

26、 is normally. Reconnet it. Refer to SMPS Refer to oscillator Circuit. Check DVD Reset Waveform. Check IC101 Reset Wavefrom. Check 3.3V line. Check Power dection Circuit. Check power part of Main B/D. Check oscillator of x101. Check if PN200 PINis High. Check if IC101 PINis High. Check if IC101 PIN ,

27、 , , is high (5V). Check if IC101 PIN is High . Replace IC101. Does no Dise or Time appear at FLD? Check if DVD an Audio Micom Interface is OK. Check power. Check DVD Module. Check SMPS. 174672 90 11 5 26 - 1-10 - 3. FRONT CIRCUIT (1/2) POWER ON TURN ON THE GREEN LED? CHECK IF THE FRONT POWER IS OK(

28、*2). IS DIGITRON ON NORMALLY? CHECK IF THE HEADPHONE IS OK. YES NO YES NO YES REFER TO SMPS PART. CHECK IF THE REMOCON IS OK. YES CHECK IF THE PN101/PN102 IS OK? RECONNECT IT. (REFER TO NOTICE *1). CHECK IF ALL BUTTENS ARE OK. YES CHECK IF THE VOLUME IS OK. YES FRONT B/D OK. YES CHECK IF THE VFD001

29、PINS ARE OK. CHECK PATTERN AND RESOLDERING . NO YES *1: When it is needed to reconnect FPC cable into PN101/PN102, short ZD972 + and screw(chassis GND) near to ZD972. *2:PN101 Pins PIN2 : -23.0V PIN3 : -27.5V PIN4 : 5.0V PIN11 : -34.0V PIN20 : 12.0V NO NO - 1-11 - 4. FRONT CIRCUIT (2/2) MEMO - 1-12

30、- - 3-1 - SECTION 3. DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 1. Power check flow - 3-2 - 2. Test & debug flow - 3-3 - - 3-4 - - 3-5 - - 3-6 - - 3-7 - - 3-8 - DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL 1) MT1379 main clock is at 27MHz(X501) 2) MT

31、1336 reset is high active - 3-9 - 3) RS232 waveform during procedure(Downloading) 4) Flash R/W enable signal during download(Downloading) - 3-10 - 2. SDRAM CLOCK 1) MT1379 main clock is at 27MHz(X501) 3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform - 3-11 - 2) Tray close waveform 3) Tray open

32、waveform - 3-12 - 4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) - 3-13 - 6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) 7. DISC TYPE JUDGEMENT WAVEFORM - 3-14 - - 3-15 - 8. FOCUS ON WAVEFORM - 3-16 - 9. SPINDLE CONTROL WAVEFORM (NO DI

33、SC CONDITION) - 3-17 - 10. TRACKING CONTROL RELATED SIGNAL(System checking) - 3-18 - 11. RF WAVEFORM 12. MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT (ASPDIF) - 3-19 - 13. MT1379 VIDEO OUTPUT WAVEFORM 1) Full colorbar signal(CVBS) 2) Y - 3-20 - 3) C 14. AUDIO OUTPUT FORM AUDIO DAC 1) Audio related Signal

34、 - 5-1 - SECTION 5. SPEAKER PART MODEL: LHS-D6530W 853 851 852 850 854 855 862 LOCA.NO.PART NOABCDEFGHDESCRIPTIONSPECIFICATIONREMARKS 8503720RMF060AOOOOOOOOPANEL,FRONTSPK LHS-D6530W MOLD SILVER SPR 8513701RM0047AOOOOOOOONET ASSEMBLYSPK LHS-D6530W NET ASSY 8526400WETN01AOOOOOOOOSPEAKER,WOOFER18P90EHC

35、1391 EAW WOOFER 4 OHM 8533091RMW058AOOOOOOOCABINET ASSEMBLYSPK LHS-D6530W WOOD CABINET 8533091RMW058BOCABINET ASSEMBLYSPK LHS-D6530W CABINET ASSY (E 8546871RU9271FOOOOOOOOPWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-D6230W SUB WOOFER 2.5M, OR 8553610RM0002AOOOOOOOOFOOTRUBBER FE-5620WE STANDARD 4 EA 862353M050

36、COOOOOOOOSCREWBH 3.5X16 FBK RUN DATE : 16.JUNE.2003 MODEL : LGEPS, LGEAP, LGEGF, LGECB ABANS, BROTHERS, LGEMC, LGEBN - 5-2 - MODEL: LHS-D6530C 862 854 853 A800 855 852 851 850 LOCA.NO.PART NODESCRIPTIONSPECIFICATIONREMARKS 8503720RMF058APANEL,FRONTSPK LHS-D6530CV MOLD SILVER SP 8516400DBHX01ASPEAKER

37、,TWEETERSN11AP06D BALHAE TWEETER(DOME) 8526400WETC01ASPEAKER,WOOFER08P60EHC1390J EAW WOOFER 8 OHM 8533110RMP019ACASELHS-D6530CV MOLD SILVER SPRAY 8546871RU9272APWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6530V/C/T TERMINAL + 2.2U 8553610RM0001FFOOTFE-5620 FOOT (PH 10 X 2T,EVA,2 862353M050DSCREWWOOD DRC 3.5X

38、12 BK 8656871RU9271CPWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6230T CENTER WIRE(5M)/ (G A8006401RM0064ASPEAKER ASSEMBLY08R60EHC3015 EAW LHS-D6530C(ST RUN DATE : 16.JUNE.2003 - 5-3 - MODEL: LHS-D6530T 862 854 853 864 852 851 A800 850 LOCA.NO.PART NODESCRIPTIONSPECIFICATIONREMARKS 8503720RMF059APANEL,FRONTSP

39、K LHS-D6530S MOLD SILVER SPR 8516400DBHX01ASPEAKER,TWEETERSN11AP06D BALHAE TWEETER(DOME) 8526400WETC01BSPEAKER,WOOFER08R60EHC3015 EAW FULL-RANGE(HI 8533110RMP020ACASELHS-D6530S MOLD SILVER SPRAY 8546871RU9272APWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6530V/C/T TERMINAL + 2.2U 862353M050DSCREWWOOD DRC 3.5X

40、12 BK 864353M056DSCREWTRQ 3.5X8 FBK 8656871RU9271DPWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6230T REAR WIRE(10M) R/CH 8666871RU9271EPWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6230T REAR WIRE(10M)/ L/C A8006401RM0066ASPEAKER ASSEMBLY08R60EHC3015 EAW LHS-D6530T (S RUN DATE : 16.JUNE.2003 - 5-4 - MODEL: LHS-D6530V 85

41、3 A800 862 854 852 851 850 LOCA.NO.PART NODESCRIPTIONSPECIFICATIONREMARKS 8503720RMF057APANEL,FRONTSPK KHS-D6530 MOLD SILVER SPRA 8516400DBHX01ASPEAKER,TWEETERSN11AP06D BALHAE TWEETER(DOME) 8526400WETC01ASPEAKER,WOOFER08P60EHC1390J EAW WOOFER 8 OHM 8533110RMP018ACASELHS-D6530V MOLD SILVER SPRAY 8546

42、871RU9272APWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6530V/C/T TERMINAL + 2.2U 862353M050DSCREWWOOD DRC 3.5X 12 BK 8656871RU9271APWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6230T FRONT WIRE(5M) R CH 8666871RU9271BPWB(PCB) ASSEMBLY,SUBSET(AUDIOLHS-D6230T FRONT WIRE(5M)/ L C A8006401RM0065ASPEAKER ASSEMBLY08R60EHC3015

43、 EAW LHS-D6530V (S RUN DATE : 16.JUNE.2003 2-1 2-2 SECTION 2. AUDIO PART BLOCK DIAGRAM 2-32-4 SHEMATIC DIAGRAMS FRONT & POWER SCHEMATIC DIAGRAM 2-52-6 MICOM SCHEMATIC DIAGRAM 2-72-8 I/O SCHEMATIC DIAGRAMNOTE: Warning Parts that are shaded are critical With respect to risk of fire or electrical shock

44、. NOTE: 1. Shaded(I) parts are critical for safety.Replace only with specified part number. 2. Voltages are DC-measured with a digital voltmefer during Play mode. 2-92-10 DAP SCHEMATIC DIAGRAM AMP SCHEMATIC DIAGRAM 2-112-12 SMPS SCHEMATIC DIAGRAM 2-132-14 NOTE: Warning Parts that are shaded are critical With respect to risk of fire or electrical shock. 2-152-16 WIRING DIAGRAM NOTE: Warning Parts that are shaded are critical With res