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LG GoldStar DVD5185 Service Manual

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DVD VIDEO PLAYER
SERVICE MANUAL
MODEL : DVD5185(DV7311E4L)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : 3829RHP012L
JANUARY, 2003

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Summary of Contents for LG GoldStar DVD5185

  • Page 1 DVD VIDEO PLAYER SERVICE MANUAL MODEL : DVD5185(DV7311E4L) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : 3829RHP012L JANUARY, 2003...
  • Page 2 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...

  • Page 3: Table Of Contents

    SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS .... 1-3 SERVICING PRECAUTIONS ....................1-4 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SPECIFICATIONS ........................1-5...

  • Page 4: Product Safety Servicing Guidelines For Video Products

    PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY SONNEL COVER THE SUBJECT OF X-RADIATION.

  • Page 5: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION : Before servicing the DVD covered by this service Electrostatically Sensitive (ES) Devices data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged SAFETY PRECAUTIONS. NOTE : if unforeseen circum- easily by static electricity.

  • Page 6: Specifications

    SPECIFICATIONS • GENERAL Power requirements AC 110-240V , 50/60 Hz Power consumption Dimensions (approx.) 430 X 55 X 242 mm (w x h x d) Mass (approx.) 2.4 kg Operating temperature 5˚C to 35˚C (41˚F to 95˚F) Operating humidity 5 % to 90 % •...
  • Page 7 SECTION 2 CABINET & MAIN CHASSIS CONTENTS 1. DISASSEMBLY .........................2-2 CABINET DISASSEMBLY ......................2-2 CIRCUIT BOARD DISASSEMBLY ....................2-3 2. EXPLODED VIEWS ........................2-4 1. Cabinet and Main Frame Section ...................2-4 2. Deck Mechanism Section......................2-6 3. Packing Accessory Section ....................2-7...

  • Page 8: Disassembly

    DISASSEMBLY CAUTION BEFORE STARTING SERVICING Electronic parts are susceptible to static electricity and may easily and damaged, so do not forget to take a proper grounding treatment as required. Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized screw driver in servicing.

  • Page 9: Circuit Board Disassembly

    CIRCUIT BOARD DISASSEMBLY Note: Before removing the main circuit board, be sure to shortcircuit the laserdiode output land. After replacing the main circuit board, open the land after inserting the flexible connector. (Refer to Mechanism Disassembly) 1. Disassembling of Main Circuit Board 2.

  • Page 10: Exploded Views

    EXPLODED VIEWS 1. Cabinet and Main Frame Section...

  • Page 11: Deck Mechanism Section

    2. Deck Mechanism Section 022A 024A 024A 024B 015B 011A 015A 015C...
  • Page 12 O BOARD ASSEMBLY DVD DV7311E4L HA3GLG +FRONT 3141R-D003F O CHASSIS ASSEMBLY DV7510E LSI,MTK 55MM 6885R-1000L O SUB PWB(PCB) ASSEMBLY DV7311E4L HA3GLG LG, R2, ENG_S 6871R-7604C O PWB(PCB) ASSEMBLY,TOTAL DV7000S SMPS SH 220V(CE) 6871R-7601N O PWB(PCB) ASSEMBLY,TOTAL DV7000S LSI SCART SH...

  • Page 13: Packing Accessory Section

    PLUG ASS'Y 1WAY(BLACK) REMOCON OWNER'S MANUAL PACKING SHEET PACKING PACKING BOX CARTON OPTIONAL PARTS • Packing Accessory Section Part List LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS 3835RS0050L O INSTRUCTION ASSEMBLY DVD DV7311E4L HA3GLG 3890R-H802W O BOX DV7311E4M HA3GLG SWW3-A 0.870...
  • Page 14 SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS ........3-2 1. System Clock X501 (13.5Mhz) ....................3-2 2. Initializing between CPLD and Flash..................3-3 3. Initializing between MPEG and SDRAM ................3-3 4. Initializing between MPEG and Flash ..................3-4 5. Reference Voltage 1.........................3-4 6.

  • Page 15: Electrical Troubleshooting Guide & Waveforms

    ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS 1. System Clock X501 (13.5Mhz) NORMAL ABNORMAL 1) MPEG IC start oscilating 1) Logo Picture doesn’t appear IC501 after being installed VCC MPEG (ZIVA5.0) 2) Initial step fail * Initial step : power cord in -> green LED -> red LED ->...

  • Page 16: Initializing Between Mpeg And Sdram

    3. Initializing between MPEG and SDRAM 1) MPEG IC start oscilating(13.5Mhz)after being 4) MPEG IC and SDRAM are synchronized by installed VCC MCLK, they communicate between. 2) MPEG IC and RF IC get the /M - RESET signal If oscilation(13.5Mhz) don’t appear, check from front U - com(IC701) and they are initial- The X-TAL and VCC and replace MPEG IC.

  • Page 17: Reference Voltage 1

    5. Reference Voltage 1 1) There are two kinds of reference voltage on RF If these reference voltage don’t appear, All kinds of servo control will fail. 2) These are outputed from RF IC and 1.65V is So, should be checked first of all Check the RF IC used as reference of DSP IC 2.1V is used as and replace…...

  • Page 18: Checking The Initial Step Of M/D Ass'y3-5

    7. Checking the initial step of M/D Ass’y Let’s look over the initial action of M/D... 4) if there is a DISC on the tray, the RF will be detected by the CD laser and go to next step.. 1) When the tray is closed, CLOSE-SW should be changed from 5V to 0V and CPLD need to Check the CLOSE-SW and LIMIT-SW detect this change...

  • Page 19: Checking The First Step Of Servo (1)3-6

    9. Checking the first step of servo (1) Let’s look over the initial step of DSP DSP. DSP perform the procedure of PLL-loop by using this signal. 1) First. DSP IC receive the DSP - Reset from CPLD 5) after checking the PLL-loop, the second step is followed.

  • Page 20: Checking The Output Of Audio Signal

    11. Checking the output of Audio signal IC401 is called as Audio DAC, DAC means Digital- DA_XCK : this is the system clock for IC401 Analog Convertor. DA_BCK : this is standard clock to synchronize the This IC receives digital signal from MPEG and con- audio serial data vert digital signal to analog signal, so we can hear sound…...

  • Page 21: Checking The Focus & Tracking Servo

    13. Checking the focus & tracking servo Waveforms as below are regarding focusing and tracking servo normally. FE, RFENV and AS signal are generated in IC202 and output at pin22, pin41 and pin20 of IC202, respectively. And then those are transmitted to pin117, pin120 and pin119 of IC201. TE and OFTR signal, needed to control tracking servo, are also generated in IC202 and output at pin18 and pin39 of IC202.

  • Page 22: The Status Of Cd_Ld And Dvd_Ld When To Play

    15. The status of CD_LD and DVD_LD when to play The waveforms as below indicate “COLLECTOR” outputs of Q201and Q202, respectively when to play DVD and CD This is the waveform of FDO and collector IC201 pin115 outputs of Q201 and Q202 when to play DVD Q201 Section A : CD_LD is ON and DVD_LD is OFF COLLECTOR...

  • Page 23: Data Stream

    17. DATA STREAM 1. In case MPEG DECODER requires DATA for playing , MPEG requests data for DSP by sending DATAREQ signal to DSP. 2. DVD DATA0-7 are output at the rising edge of DATACLK 3. During DATACLK Cycle, DATAENV is output to confirm whether DATA is valid or not 4.

  • Page 24: Tray Open And Close

    19. Tray Open and Close CPLD send tray - open or tray - close signal to IC203(motor drive IC) IC203 generates LM+ and LM - and transmits them to operate a loading motor. if there is no LM+ or LM-, check the Tray-open and Tray-close. And replace the Motor Drive IC . IC502 IC203 IC203...

  • Page 25: Signals For Front Micom

    21. Signals for Front micom /M -RESET signal is output from IC901 when power is on, so IC501 is initialized. And those(IC901 and IC501) communicate each other through TXDO,RXDO, SCKO signals Waveforms display each signal when power on and after power on IC901 IC901 pin64...

  • Page 26: System Clock Of Mpeg Ic

    23. System clock of MPEG IC The waveform and the block diagram as below show a clock input and output between IC501 and X501. Clocks generated in X501 is output and input into pin138 and pin139 of IC501. The clock frequency is 13.5MHz. If this clock is abnormal or does not appear, replace the X-tal or MPEG IC IC501 IC501...

  • Page 27: Block Diagrams

    BLOCK DIAGRAMS 1. Overall Block Diagram 3-14...

  • Page 28: Power(Smps) Block Diagram

    2. Power(SMPS) Block Diagram 3-15...

  • Page 29: Audio Block Diagram

    3. Audio Block Diagram 3-16...

  • Page 30: Mpeg & Memory Block Diagram

    4. MPEG & MEMORY Block Diagram 3-17...

  • Page 31: Servo Interface And Block Diagram

    5. Servo Interface and Block Diagram 3-18...

  • Page 32: Karaoke Block Diagram(Karaoke Model Only)

    6. KARAOKE Block Diagram(KARAOKE MODEL ONLY) AUDIO CS4391 OPTION Microphone AUDIO signal MPEG Microphone1 PREAMP Ziva5.0 KIA4558 KIA4558 CS5331 IC801 (Block Digram) 1 The unit turns to KARAOKE MODE with ou-screen lyrics display and melody sound when it play backs VCD or DVD KARAOKE DISC.

  • Page 33: Circuit Diagrams

    2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE LG ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.

  • Page 34: Rf & Servo Circuit Diagram

    2. RF & SERVO CIRCUIT DIAGRAM Ude Interface with MPEG IC CD APC TR CD Disc Recoding fail DVD APC TR DVD Disc Recoding fail RF IC Disc detect error Servo DSP IC Distinguishing Disc type Reference voltage for normal servo RF Signal CD VR TR CD Disc detect error...

  • Page 35: System Circuit Diagram

    3. SYSTEM CIRCUIT DIAGRAM System CLK X-TAL(13.5MHz) Initial Function is abnormal frequency is defined Video Signal output current Register Video buffer EEPROM(2K) Data in setup Menu Logo Picture will not display SDRM Logo Picture Not used will not display 1.8V Regulator Audio Analog to Digital convertor MPEG IC Mic Audio will not output...

  • Page 36: Audio & Jack Circuit Diagram

    4. AUDIO & JACK CIRCUIT DIAGRAM Color Signal luminace Signal 2ch Audio Data OP AMP for Amplifying Audio Signal System clock for IC401 Serial Interface with 2ch Audio Digital to Analog convertor Main µ-COM(MPEG IC) 2ch Audio output is bad '02.

  • Page 37: Timer/5.1Ch Circuit Diagram

    5. TIMER/5.1CH CIRCUIT DIAGRAM LED in Front not work Amplifier for Mic Audio signal X-TAL Serial Interface with MPEG IC H/W Reset IC Front µ-COM System working fail Remocon Receiver Remocon not working System CLOCK for IC301 OP AMP OP AMP OP AMP for Amplifying Audio Audio Data from MPEG IC 5.1CH Audio Digital to Analog Convertor...

  • Page 38: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STOP PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 39 MODE MODE MODE MODE MODE Tran- PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. sistor STOP PLAY STOP PLAY STOP PLAY Q201 4.94 4.35 3.23 3.23 Q202 2.28 3.26 3.21 3.21 0.22 0.29 Q203 4.94 4.94...

  • Page 40: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD LOCATION GUIDE 3-34 3-35...

  • Page 41: Key P.c.board

    2. KEY P.C.BOARD 3. TIMER P.C.BOARD LOCATION GUIDE 3-36 3-37...

  • Page 42: Scart & 5.1Ch P.c.board

    4. SCART & 5.1CH P.C.BOARD LOCATION GUIDE (Solder Side) 3-38 3-39...
  • Page 43 With respect to risk of fire or "IC5A1A" NOTES) electricial shock. SECTION 4 REPLACEMENT PARTS LIST MODEL:(A)DV7311E4L(DVD5185) HA3GLG LGEDG RUN DATE:JAN.07.2003 .MECHANICAL SECTION NSP:Not Service Part LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS ASSEMBLY PARTS SECTION 6721RH0370A O DECK ASSEMBLY,VIDEO DP-7R(55MM) - SH 4861R-0016B...
  • Page 44 O BOARD ASSEMBLY DVD DV7311E4L HA3GLG +FRONT 3141R-D003F O CHASSIS ASSEMBLY DV7510E LSI,MTK 55MM 6885R-1000L O SUB PWB(PCB) ASSEMBLY DV7311E4L HA3GLG LG, R2, ENG_S 6871R-7604C O PWB(PCB) ASSEMBLY,TOTAL DV7000S SMPS SH 220V(CE) 6871R-7601N O PWB(PCB) ASSEMBLY,TOTAL DV7000S LSI SCART SH...
  • Page 45 .ELECTRICAL SECTION LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS CAPACITOR C101 624-088S O CAPACITOR,DRAWING MPX104K ETR/EUROPTRONIC BULK C102 624-088S O CAPACITOR,DRAWING MPX104K ETR/EUROPTRONIC BULK C103 0CE686CU611 O CAPACITOR,AL.ELECTROLYTIC 68UF SHL,SD 400V M FL BK7.5 C104 624-085D O CAPACITOR CE 47UF/50V KME (SMPS)
  • Page 46 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS C234 0CE4764F638 O CAPACITOR,ELECTROLYTIC 47M SRA/SS 16V M FM5 TP(5) C236 0CE4764F638 O CAPACITOR,ELECTROLYTIC 47M SRA/SS 16V M FM5 TP(5) C237 0CH4681K412 O CAPACITOR,FIXED CERAMIC(High d 680PF 50V 5% NP0 1608 R/TP C238...
  • Page 47 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS C2F0 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C2G0 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C2H0 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP...
  • Page 48 47M SRA/SS 16V M FM5 TP(5) C913 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP CN401 561-711O O CONNECTOR (CIRC),WAFER GIL-S-15P-S2T2-EF LG CABLE 15P CN903 561-712D O CONNECTOR (CIRC),WAFER GIL-S-04P-S2L2-EF LG CABLE 4PI DIODE&DIGITRON D100 0DD221009AA O DIODE,RECTIFIERS...
  • Page 49 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS D107 0DD010009AC O DIODE EU01W(R-FORM) TP SANKEN D108 0DD010009AC O DIODE EU01W(R-FORM) TP SANKEN D109 0DR310000AA O DIODE,RECTIFIERS RU3YXLF-C1 BK SANKEN D4 100V 2 D110 0DR104009BA O DIODE,RECTIFIER RL104F TP RECTRON NON 400V 1A...
  • Page 50 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS L510 6200HJC102A O FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L511 6200HJC102A O FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L512 6200HJC102A O FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L513 6200HJC102A O FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L514 6200HJC102A O FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP...
  • Page 51 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R127 0RN3601E408 O RESISTOR,FIXED METAL FILM 3.6K OHM 1/8 W 1.00% TA26 R128 0RN3301E408 O RESISTOR,FIXED METAL FILM 3.3K OHM 1/8 W 1.00% TA26 R130 0RD1002F608 O RESISTOR,FIXED CARBON FILM 10K OHM 1/6 W 5% TA26...
  • Page 52 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R266 0RH1001C622 O RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.00% D R267 0RH1001C622 O RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.00% D R268 0RH1002C622 O RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D...
  • Page 53 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R423 0RH1801C622 O RESISTOR,METAL GLAZED(CHIP) 1.8K OHM 1 / 16 W 1608 5.00% D R424 0RH1801C622 O RESISTOR,METAL GLAZED(CHIP) 1.8K OHM 1 / 16 W 1608 5.00% D R425 0RH2200C622 O RESISTOR,METAL GLAZED(CHIP) 220 OHM 1 / 16 W 1608 5.00% D...
  • Page 54 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R542 0RH0332C622 O RESISTOR,METAL GLAZED(CHIP) 33 OHM 1 / 16 W 1608 5.00% D R543 0RH0332C622 O RESISTOR,METAL GLAZED(CHIP) 33 OHM 1 / 16 W 1608 5.00% D R544 0RH0332C622 O RESISTOR,METAL GLAZED(CHIP) 33 OHM 1 / 16 W 1608 5.00% D...
  • Page 55 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R624 0RH4701C622 O RESISTOR,METAL GLAZED(CHIP) 4.7K OHM 1 / 16 W 1608 5.00% D R625 0RH0752C622 O RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D R626 0RH0752C622 O RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D...
  • Page 56 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS SWITCH SW902 556-219B O SWITCH,TACT THVV502GAA POSTECH DC 12 V 5- SW903 556-219B O SWITCH,TACT THVV502GAA POSTECH DC 12 V 5- SW904 556-219B O SWITCH,TACT THVV502GAA POSTECH DC 12 V 5- SW905 556-219B...

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