LG-DVD5185-cd-sm 电路图 维修手册.pdf

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1、DVD VIDEO PLAYER SERVICE MANUAL MODEL : DVD5185(DV6812E4) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETYPRECAUTIONS” IN THIS MANUAL. MODEL : DVD5185(DV6812E4)SERVICE MANUAL P/NO : 3829RHPOO9Y JULY,2002 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 CONTENTS SECTION 1 . . . .SUMMARY SECTION 2 .

2、 . . .CABINET CONNECT A 1500 OHM 10 WATT RESIS- TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON- DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPAC

3、ITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT: GRAPH

4、IC SYMBOLS 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 MAG- NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERA

5、L TRIAN- GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. SUBJECT : X-RADIATION 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN- TIAL SOURCE OF X-RAYS IN CURRENT T.

6、V. RECEIVERS IS THE PIC- TURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA- TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC- TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTA

7、IN CIR- CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR- ABLE LEVELS. 2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM. 3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELI

8、ABLE HIGH VOLTAGE METER. THE CALIBRA TION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR. 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS

9、 SERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY, WE SUGGEST THAT YOU AND YOUR SERVICE ORGA- NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE R

10、EGU- LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE- DURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ON EACH CUSTOMERS INVOICE. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE

11、AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCES SIVE VOLTAGE. 6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED). SUBJECT: IMPLOSION 1. ALL DIRECT VIEWED PICTURE TUBES AR

12、E EQUIPPED WITH AN INTE GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT. 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES. SUBJECT : TIPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSE

13、D-IN RECESS, CUBBY- HOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIA- TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PALCEMENT WHE

14、RE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC- ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER- CIAL MOUNTING KIT. MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUN

15、TED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE

16、MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZ- ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPET

17、S. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTEN

18、SION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN- GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS A.C. VOLTMETER GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC PLACE THIS PROBE ON EACH EXPOSED METAL

19、 PART 1-4 SERVICING PRECAUTIONS CAUTION : Before servicing the DVD covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circum- stances create conflict between the following servicing pre- cautions and any of the safety precaution

20、s in this publica- tions, always follow the safety precautions. Remembers Safety First: General Servicing Precautions 1. Always unplug the DVD AC power cord from the AC power source before: (1)Removing or reinstalling any component, circuit board, module, or any other assembly. (2)Disconnection or r

21、econnecting any internal electrical plug or other electrical connection. (3)Connecting a test substitute in parallel with an elec- trolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray

22、chemicals on or near this DVD or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwis

23、e in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped. 5. Do not apply AC power to this DVD and/or any of its electrical assemblies unless all solid-state device

24、 heat sinks are cerrectly installed. 6. Always connect test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and tu

25、rn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resis- tance between each blade of the attachment plug and acces- sible conductive parts (Note 1) should be more than 1M- ohm. Note 1 : Accessible Conductive Parts including Metal pan-

26、els, Input terminals, Earphone jacks, etc. Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circui

27、ts and some field effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor compo- nent or semiconductor-equipped assembly, drain off an

28、y electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commer- cially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly

29、 equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grouned-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder r

30、emoval devices not classified a “anti-static” can generate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protec tive package until im

31、mediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, to

32、uch the protective material to the chassis or circuit assembly into which the device will be installed. Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally har

33、mless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static elec- tricity sufficient to damage an ES device.) 1-5 SPECIFICATIONS GENERAL Power requirementsAC 110240V, 50/60Hz Power consumption14W Dimensions(approx.)430 x 64

34、x 245mm (W/h/d) Mass(approx.)2.8kg Operating temperature5C to 40C (41F to 104F) Operating humidity5% to 9% SYSTEM LaserSemiconductor laser, wavelength 650nm Signal systemPAL/NTSC Frequency responseDVD (PCM 96kHz): 8Hz to 44kHz DVD (PCM 48kHz): 2Hz to 22kHz CD: 8Hz to 20kHz Signal-to-noise ratioMore

35、than 100dB (ANALOG OUT connectors only) Harmonic distortionLess than 0.008% Dynamic rangeMore than 100dB(DVD) More than 95dB(CD) OUTPUTS VIDEO OUT1 V (p-p) 75 , sync negative, RCA jack x 1/SCART(TO TV) Audio output (digital audio)0.5 V (p-p), 75 , RCA jack x 1 Audio output (analog audio)2.0 Vrms (1

36、kHz, 0 dB), 330 , RCA jack (L, R) x 1/SCART(TO TV) 2-1 SECTION 2 CABINET RF PICK UP IC203 SDRAM 16bit 16M IC201 HDC25D811 CD / DVD DSP IC501 PANTERA LE / PLUS IC901 GMS1C2012 FROM FL DISPLAY KEY Input REMOCON RECEIVER 6MHz X-TAL Pb IC301 XC9572VL CPLD I/O PORT 72 IC304 SDRAM 16/32BIT 64M IC502 93C56

37、 EEPROM IC2M1 KA3032 MOTOR DRIVER IC2A1 Hd153702TF RF ICDATA 00:15 ICADD 0:8 LOADING FOCUS,TRACKING,SLED SPINDLE MIRR,TZC,PI,TE FE,DFECT_IN RFO SCLK,SDATA ;SCOR,SQCK,SQSO XLAT , E_STI , E_ENB , E_DR RF_XLAT , LDON IC401/451 CS4392 PCM1603KY XIO1,XIO ,XIO10 /SRST F_CLK F_OUT PCMCLK ALE SPINDLE_FG MSD

38、ATO MDP1 FOK DEFECT DSP_ SENSE LOCK E_SOUT ZISENB /XRST DAC_RST 16 : 9 , PAL_SW , AUTO_SW , MIC_ON Y_SEL /A_MUTE /DAC_CS1 /DAC_CS2 V_MUTE DAC_CLK DAC_OUT ADCCLK ACT_MUTE , LOAD_OPEN , LOAD_CLOSE MIRR AD 04 : 21 PSENB FLD /FLD_CS FLD_CLK FLD_OUT /FLD_CS FLD_CLK FLD_OUT CPLD EE_CS , EE_CLK , EE _OUT F

39、_IN IC3F1 FLASH ROM F_IN /MRESET /FLASH_CS , /RD PWEO LA0 LA1 LA2 LA3 LADD 04:19 MD00:31 MCLK2 CKE MA00:10 MA12,13 /CS0 /RAS /CAS /WE DQM0 3 REQP SDCLKI , PSYNC DVD1:7 DSP_ INT SENSE /DSP_ CS F_IN DA_AIN SPDIF ACLK LRCK AOUT03 AMP L/R RR RL Composite FIL TER Y Pr SW602 S.OUT / COMP.OUT SWICHING FR F

40、LWOOFE R CENTER VIDEO SW CVBS/Pr/R , C/Pb/ , Y/G CVBS Y C L/R RR RL FR FL WOOFER CENTER -VF AC 240V, 60Hz POWER BOARD -VF -24VA +8V +5.2VA +5V_D +5V_A +12VA +3.3V_M1 AD0:7 LADD45 , LA03 AD 00 : 15 MDP,FDO,TDO,FMO,MON OPEN_SW CLOSE_SW LIMIT_SW CPLD SBADD , 27MHz X-TAL 33.8688MHz X-TAL +3.3V/3.3V_M PO

41、WER_CTL MIC IC206 INVER TER DV5000 s 2. Power(SMPS) Block Diagram 5V_D 5V_A -24VA F+ RECTIFIERLINE FIL TER SWITCHING TR TRANS FEED B. REG(8V) 8V 5.2VA F- RECTIFIER(FLD) RECTIFIER(9V) RECTIFIER(5.2V) LPF LPF RECTIFIER(14V)LPF 12VA AC90240V PWR ON/OFF REG(3.3V) REG(3.3V) 3.3V_M1 3.3V/3.3V_M DV5000 s 3

42、-14 3-15 8 SENS, FOK, SLD_FG, MSDAT0, DEFE CT,DSP_ SENSE IC2M1 KA3082 SpindleMotor, LoadingMotor, Actuator Driver CD: A,B,C,D / E, F 4 4 MIRR,TZC 8 5 3 3 SQSO, SQC K, SCORSCOR 6 XLAT, S_CLK, S_DATA UCOM I/F focus, tracking, loading, sled Spindle M/D PICK UP MCK IC206 HDC25D811 CD / DVD DSP DVD SERVO

43、 IC2A1 HD153702TF RF Signal Process or FDO,TDO,FMO Load open/close(loading control) UCOM I/F DVD: A,B,C,D, FE,TE,PI,SBADD 4 DVD/CD RF IC203 1M x 16bit SDRAM 16 9 ICADDR0:8 ICDATA00:15 DO0:7 AO0:5 DVD_DATA0:7 MON,MDP SPINDLE_FG MPEG I/F 2 DSP_ CS, /WR, /RD3 8 DV5000 s 3. RF/CD DSP/DVD DSP/DVD SERVO B

44、lock Diagram 4. Audio Block Diagram IC401 CS4932 Audio DAC IC402 LPF & Buffer Buffer Buffer Buffer KA 5532 OP AMP DAC_RST S_DATA S_CLK DAC_L0 DA_LRCK DA_DATA0 DA_BCK DA_XCK FL FR RL RR WOOFER CENTER L R U-COM I/F IC452 LPF & KA5532 OP AMP IC453 LPF & KA 5532 OP AMP IC454 LPF & KA 5532 OP AMP IC451 P

45、CM1603KY Aud io DAC (5.1CH) FL FR RL RR WOOFER CENTER L R A/V JACK I/F DAC_RST S_DATA S_CLK DAC_L1 DA_LRCK DA_DATA1:3 DA_BCK DA_XCK MPEG I/F MPEG I/F U-COM I/F DV5000 s 3-16 3-17 5. MPEG & MEMORY Block Diagram IC501 PANTERA-2 LE/PLUS IC301 XC9572VL CPLD I/O PORT 72 IC304 SDRAM 16/32BIT 64M IC502 93C

46、46 EEPROM IC3F1 FLASH MEMORY AD0:78 DSP I/F DVD0:7 8 LA 0:3 4 SCLK,SDATA SQCK,SQS0 REQP SDCLK1,PSYNC DSP_ INT SENSE /DSP_ CS AD 04 : 21 RF & MOTOR I/F MIRR LDON SCLK,S DATA EE_CS F_IN 32 MD00:31 MCLK2 CKE MA00:10 MA12,13 /CS0 /RAS/ /CAS /WE /DQM0:3 SPINDLE_FG ALE AD04:19 16 LADD04:19 16 LA 0:3 4 AD0

47、0:15 16 AUDIO I/F DA_DATA0:3 DA_BCK,DA_LRCK,DA_XCK 4 DAC_L0,DAC_L1 DAC_RST A/V JACK I/F C/R(B) CVBS/G(R) Y/B(G) CVBS V_MUTE,16:9 ZISENB /RD /PWED IC301 DV5000 s 6. KARAOKE Block Diagram(KARAOKE MODEL ONLY) 3-18 Microphone1 Microphone Signal PREAMP (BA3308) AMP (KIA4558) AUDIO ADC (CS5331) DVD DSP (P

48、-Processor) MPEG (NS) AUDIO DAC (CS4392) Microphone1 1 The unit turns to KARAOKE MODE with ou-screen lyrics display and melody sound when it play backs VCD or DVD KARAOKE DISC. 2. IF a microphone is connected at this time, MICON recoguizes the connection and prepares the compo- sition of external vo

49、ice and internal melody. 3. The week signal of the microphone is converted to the digital signal after voice output that has passed through PREAMP(BA3308) and AMP(KIA4558) passes through(CS5331) that is Audio ADC(Analog to Digital convertor). 4. This digital signal enters NS that is MPEG IC and is added to the output of DVD DSP (Processor) 5. This mixed signal is output to AV JACK after passing through AUDIO DAC(CS4392). (Block Digram) 3-193-20 CIRCUIT DIAGRAM 1. POWER(SMPS) CIRCUIT DIAGRAM IMPORTANT SAFETY NO