Related Manuals for LG DV6812E4
Summary of Contents for LG DV6812E4
- Page 1 DVD VIDEO PLAYER SERVICE MANUAL MODEL : DVD5185(DV6812E4) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. JULY,2002 P/NO : 3829RHPOO9Y...
- Page 3 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..MECHANISM SECTION 5 ..REPLACEMENT PARTS LIST...
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Page 4: 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 5: 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 6: 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 7: Specifications
SPECIFICATIONS • GENERAL Power requirements AC 110~240V, 50/60Hz Power consumption Dimensions(approx.) 430 x 64 x 245mm (W/h/d) Mass(approx.) 2.8kg Operating temperature 5˚C to 40˚C (41˚F to 104˚F) Operating humidity 5% to 9% • SYSTEM Laser Semiconductor laser, wavelength 650nm Signal system PAL/NTSC Frequency response DVD (PCM 96kHz): 8Hz to 44kHz... - Page 8 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. Packing Accessory Section ....................2-5...
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Page 9: 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 10: 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 and Interface Board 2. -
Page 11: Exploded Views
EXPLODED VIEWS 1. Cabinet and Main Frame Section OPTIONAL PART... -
Page 12: Packing Accessory Section
2. Packing Accessory Section 810 CABLE SET ASS'Y RF CABLE PLUG ASS'Y 1WAY PLUG ASS'Y 2WAY BATTERY REMOCON OWNER'S MANUAL PACKING SHEET PACKING PACKING BOX CARTON OPTIONAL PARTS... - Page 13 SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ..............3-2 1. Power(SMPS) Circuit.......................3-2 2. µ-com Circuit..........................3-3 3. MPEG Circuit..........................3-6 4. Front Circuit(Digitron & Key) ....................3-7 5. RF/Servo Circuit ........................3-8 6. KARAOKE Circuit (KARAOKE MODEL ONLY)..............3-12 BLOCK DIAGRAMS ........................3-13 1. Overall Block Diagram ......................3-13 2.
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Page 14: Electrical Troubleshooting Guide
ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) Circuit No 5V_D No VF+ or 5V_A . Is 5.2VA section working? Is 5.2VA section working? Is oscillation present at the Is oscillation present at the anode of D109? Base of Q108? No 5.2VA. Replace D109. Replace Q108. -
Page 15: Μ-Com Circuit
2. µ-COM Circuit A. No Power POWER ON Does Hello appear at FLD? Is P5901 Does no DISC appear? connected normally? Reconnect it. Does Logo appear Check power. on the screen? (Refer to power) If power is normal Is P5901 Pin 23 normal? Refer to Front Part The waveform Is oscillation of... - Page 16 B. Audio abnormal C. Video abnormal AUDIO ABNORMAL VIDEO ABNORMAL Check Audio jack. Check Video jack. YES (If OK) YES (If OK) Check MPEG_CLK Signal Refer to Video part. of MPEG part. YES (If OK) YES (If OK) Refer to Audio part. Refer to MPEG part.
- Page 17 E. Picture abnormal PICTURE ABNORMAL Check the disc. Refer to Servo part If OK Check MPEG_CLK Signal of MPEG part YES (If OK) Check DSP YES (If OK) Check MPEG YES (If OK) Replace B/D F. Disc Error DISC ERROR Check Disc YES (If OK) Refer to Servo part...
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Page 18: Mpeg Circuit
3. MPEG Circuit Power is on Does Logo appear Check power & clock. on the screen? Does the Check CD/DVD DSP output moving picture of the DVD Disc Is MPEG data signal normal? play on the screen signal. normally? Check MPEG Decoder input signal. -
Page 19: Front Circuit(Digitron & Key)
4. Front Circuit (Digitron & key) START Power on. Is oscillation of Check Power. LED ON? X901 normal? Check waveform Is Digitron on normally? Replace IC902. of IC901 Pin 7. Do all the Is waveform of IC901 Check waveform buttons work Pin 21 normal? of IC901 Pin 14. -
Page 20: Rf/Servo Circuit
5. RF/Servo Circuit CHECK POINT(General) Does signal goes "High" to IC201 Pin186 when the power is on? Does signal pulse Check "2.µ-COM Part". input to IC201 Pins 53, 54 when the power is on? Does Does Replace X201 or IC206 TTL pulse output to 33.8688MHz clock input IC201 Pin 156? - Page 21 No disc .Power on Check loading Part. Push Pick-up to inner track to Does tray open or close? the end by hand. Does DECK assembly is defective. PMD03 Pin 10 change (Limit sw) high to low? Pressing the open/close key repeatedly, check the voltage of IC2M1 check µ-COM Part.
- Page 22 DISC IN OPEN/CLOSE Fig.3. FOCUS ERROR waveform Check Check IC2A1 Pins 47,50,51,52 the focus error moving the FOCUS ON? lens up and down. in DVD Mode (IC2A1 Pin 39) IC201 no output : Pick-up is defective. Does the TTL level change at IC201 Replace IC201.
- Page 23 CHECK A Fig.5. RF waveform Check RF Eye-Pattern. Check IC2A1 Pin 3. No signal: Pick-up is defective RF : 1.5-1.6V(TP2A0) Does the sawtooth waveform emit Is the eye-pattern vivid? Does the 1.6V emit? Replace IC2A1. at IC2A1 Pin 36? Replace IC201. Check IC201 Pin84.
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Page 24: Karaoke Circuit (Karaoke Model Only)
6. KARAOKE Circuit (KARAOKE MODEL ONLY) Start Insert the Mic jack Is the Mic signal at the IC802 pin1. Is the Mic signal at the IC802 Pin 2. Does the signal change Replace IC801. Replace VR803. at the IC802 Pin1 if adjusting the VR803 (Echo VR)? Is the Mic signal at the IC801 Pin 3, 7 normal? -
Page 25: Block Diagrams
BLOCK DIAGRAMS 1. Overall Block Diagram , PAL_SW , AUTO_SW , MIC_ON DAC_RST /FLASH_CS , /RD PWEO PSENB CPLD SBADD , MIRR,TZC,PI,TE FE,DFECT_IN XLAT , E_STI , E_ENB , E_DR CPLD SPINDLE FOCUS,TRACKI NG,SLED LOADING DV5000 s DECK M ECHANI SM 3-13... -
Page 26: Power(Smps) Block Diagram
2. Power(SMPS) Block Diagram TRANS SWITCHING TR RECTIFIER LINE FIL TER DV5000 s 3-14... -
Page 27: Rf/Cd Dsp/Dvd Dsp/Dvd Servo Block Diagram
3. RF/CD DSP/DVD DSP/DVD SERVO Block Diagram DV5000 s 3-15... -
Page 28: Audio Block Diagram
4. Audio Block Diagram DV5000 s 3-16... -
Page 29: Mpeg & Memory Block Diagram
5. MPEG & MEMORY Block Diagram DV5000 s 3-17... -
Page 30: Karaoke Block Diagram(Karaoke Model Only)
6. KARAOKE Block Diagram(KARAOKE MODEL ONLY) Microphone1 Microphone AUDIO AUDIO Signal MPEG PREAMP (KIA4558) (NS) (CS5331) (CS4392) (BA3308) Microphone1 DVD DSP (P-Processor) (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 31: 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 32: Dvd Dsp Circuit Diagram
2. DVD DSP CIRCUIT DIAGRAM TRACKING LOOP SLED LOOP WAVEFORM FOCUS LOOP SPINDLE LOOP 3-21 3-22... -
Page 33: Drive & Rf Circuit Diagram
3. DRIVE & RF CIRCUIT DIAGRAM TRACKING LOOP SLED LOOP WAVEFORM FOCUS LOOP SPINDLE LOOP 3-23 3-24... -
Page 34: Mpeg Circuit Diagram
4. MPEG CIRCUIT DIAGRAM Optical/Coaxial out Y/Pb/Pr(Componet) WAVEFORM Y/C(S-VHS) CVBS 3-25 3-26... -
Page 35: Waveforms
• WAVEFORMS 2.50MS/s Stop : 4 Acqs M20.0µs Glitch Ch1 2 Apr 1999 500mV 14:47:27 IC2A1 Pin 39, Focus Error IC2A1 Pin 36 IC2A1 Pin 36 IC501 Pin 118, Composite IC501 Pin 112, Chrominance IC501 Pin 114, Luminance IC2A1 Pin 38, PE Tracking Error VBR TRACKING Error (Super video out Mode) -
Page 36: Audio Circuit Diagram
5. AUDIO CIRCUIT DIAGRAM IC401 is defective 2CH Audio out bad IC402 is defective 2CH Audio out bad IC452 is defective 5.1CH FL/FR Audio out bad IC451 is defective 5.1CH Audio out bad IC453 is defective 5.1CH RL/RR Audio out bad IC454 is defective 5.1CH Center/woofer Audio out bad 5.1CH RL SIGNAL... -
Page 37: Memory Circuit Diagram
6. MEMORY CIRCUIT DIAGRAM Digitron all not display system not working program download fail Digitron all not display system not workry Digitron all not display system not working Tray not open/close Digitron all not display system not working Tray not open/close 3-31 3-32... -
Page 38: Front & Mic Circuit Diagram
7. FRONT & MIC CIRCUIT DIAGRAM SYSTEM not operate Digitron abnormal Remocon not operate SYSTEM not operate KARAOKE not operate 3-33 3-34... -
Page 39: A/V Jack Circuit Diagram
8. A/V JACK CIRCUIT DIAGRAM 16:9 can't be changed OPTICAL S VIDEO (C) COMP.VIDEO AUDIO (L) S VIDEO (Y) AUDIO (R) 3-35 3-36... -
Page 40: Circuit Voltage Chart
• CIRCUIT VOLTAGE CHART IC203 IC201 IC301 IC3F1 IC501 IC305 IC2A1 IC2M1 IC203 IC201 IC301 IC3F1 IC501 IC305 IC2A1 IC2M1 IC203 IC201 IC301 IC3F1 IC501 IC305 IC2A1 IC2M1 PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY 3.18... - Page 41 IC901 IC451 IC401 IC454 IC453 IC452 IC402 IC801 IC503 IC502 IC2A4 IC2A2 IC206 IC504 IC506 PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY 2.98 2.98 5.51 5.51 5.41 5.42...
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Page 42: Printed Circuit Diagrams
PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD LOCATION GUIDE 3-41 3-42... -
Page 43: Power,A/V,Front P.c.board
2. POWER, A/V, FRONT P.C.BOARD LOCATION GUIDE 3-43 3-44... -
Page 44: Key P.c.board
3. KEY P.C.BOARD LOCATION GUIDE (Solder Side) 3-45 3-46... - Page 45 SECTION 4 MECHANISM CONTENTS 5. Frame Up/Down ........4-4 DECK MECHANISM PARTS 6. Belt Loading........4-4 LOCATIONS 7. Gear Pulley ........4-4 • Top View(With Tray) .......4-1 8. Gear Loading ........4-4 • Top View(Without Tray) ......4-1 9. Guide Up/Down.........4-4 • Bottom View ...........4-1 10.
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Page 46: Deck Mechanism Parts Locations
DECK MECHANISM PARTS LOCATION • Top View (With Tray) Procedure Disass Fig- Parts Fixing Type embly Starting No. Holder Clamp 1 Screw, 2 Locking Tabs Clamp Assembly Disc Plate Clamp 1,2,3 Magnet Clamp 1,2,3,4 Clamp Upper Tray Disc Base Assembly 2 Screws Sled Gear Assembly... -
Page 47: Deck Mechanism Disassembly
DECK MECHANISM DISASSEMBLY HOLDER CLAMP PLATE CLAMP CLAMP ASSEMBLY DISC MAGNET CLAMP TRAY DISC CLAMP UPPER (S1) (Fig. A) BASE MAIN HOLDER CLAMP EMERGENCY EJECT HOLE (L1) BASE MAIN LEVER HOLDER CLAMP (L1) BASE MAIN BOTTOM SIDE VIEW Fig. 4-1 Fig. -
Page 48: Base Assembly Sled
DECK MECHANISM DISASSEMBLY (L2) GEAR MIDDLE (S2) RUBBER DAMPER (S3) GEAR ASSEMBLY RACK GEAR ASSEMBLY FEED (S2) RUBBER FRONT PICK UP ASSEMBLY GENERAL BASE PU(OUTSERT) (C1) (C2) (C1) PICK UP ASSEMBLY GENERAL MOTOR ASSEMBLY SPINDLE GEAR ASSEMBLY FEED GEAR MIDDLE GAER ASSEMBLY RACK MOTOR ASSEMBLY SPINDLE Fig. -
Page 49: Frame Up/Down
DECK MECHANISM DISASSEMBLY GUIDE UP/DOWN GEAR LOADING GEAR PULLEY (L3) (L4) BELT LOADING PWB ASSEMBLY LOADING BASE MAIN (L6) (S5) BASE MAIN FRAME UP/DOWN (L5) GUIDE UP/DOWN FIG. (A) FIG. (B) GUIDE UP/DOWN FIG. (C) Fig. 4-4 5. Frame Up/Down 8. - Page 50 MEMO...
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Page 51: Exploded View
EXPLODED VIEWS 1. Deck Mechanism Exploded View 012A 011A... - Page 52 MEMO MEMO...
- Page 53 NOTES) Warning NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock. SECTION 5 REPLACEMENT PARTS LIST MODEL:(A)DV6812E4(DVD5185)LGEDG RUN DATE:JULY,15.2002 .MECHANICAL SECTION NSP:Not Service Part LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS...
- Page 54 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS 841-0021 O BATTERY,MN ER03X HI WATT 1.5V .MA/H AAA 6851RP0003N O CABLE,COAXIAL .REMOTE CONTROL SECTION 6711R1P040A O REMOTE CONTROLLER ASSEMBLY N6 UNIFIED DV5812E LG...
- Page 55 .ELECTRICAL SECTION LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS CAPACITOR C101 624-088N O CAPACITOR,DRAWING MPX104K 275VAC BULK ETR C102 0CG3320U630 O CAPACITOR,SEMI CERAMIC 3300 PF 400V M E R(NK,AD,SD) C103 0CE686CU611 O CAPACITOR,AL.ELECTROLYTIC 68UF SHL,SD 400V M FL BK7.5 C104...
- Page 56 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS C254 0CH1105D942 O CAPACITOR,CHIP[CERAMIC M/L HD 1UF 10V Z Y5V(F) 1508 R/TP C255 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C258 0CH1105D942 O CAPACITOR,CHIP[CERAMIC M/L HD 1UF 10V Z Y5V(F) 1508 R/TP...
- Page 57 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS C2M4 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C2M5 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C2M6 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP...
- Page 58 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS C512 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C513 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C514 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP...
- Page 59 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS DIODE BD101 0DRRE00060A O DIODE,RECTIFIERS DB105-C-S-V50 RECTRON BK NON 6 D100 0DD221009AA O DIODE,RECTIFIERS ERA22-10 KFLB,TP ,R T/P,FUJI D102 0DR158220AA O DIODE,RECTIFIER 1N5822 BK RECTRON DO201AD 40V D103 0DR310000AA O DIODE,RECTIFIERS RU3YXLF-C1 BK SANKEN D4 100V 2...
- Page 60 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS IC106 0IPMGFA015A O IC,POWER MANAGEMENT KA78R33TSTU FAIRCHILD 4P TO-22 IC107 0IPMGFA015A O IC,POWER MANAGEMENT KA78R33TSTU FAIRCHILD 4P TO-22 IC201 0ILNRHY002B O IC,LINEAR HDC25D811B HYUNDAI 208 QFP TRA IC203 0IEB121616B O IC,ELITE MEMORY TECHNOLOGY...
- Page 61 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS Q606 0TR103009AF O TRANSISTOR KRA103M-TP (KRA2203) KEC Q607 0TR319909AF O TRANSISTOR,BIPOLARS KTC3199-BL MINI TP KEC Q608 0TR319909AF O TRANSISTOR,BIPOLARS KTC3199-BL MINI TP KEC Q615 0TR126709AC O TRANSISTOR KTA1267-GR MINI TP KEC Q905 0TR103009AE...
- Page 62 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R274 0RH6200C622 O RESISTOR,METAL GLAZED(CHIP) 620 OHM 1 / 16 W 1608 5.00% D R275 0RH1501C622 O RESISTOR,METAL GLAZED(CHIP) 1.5K OHM 1 / 16 W 1608 5.00% D R276 0RH9100C622 O RESISTOR,METAL GLAZED(CHIP) 910 OHM 1 / 16 W 1608 5.00% D...
- Page 63 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R2M6 0RH1002C622 O RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D R2M7 0RH1002C622 O RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D R2M8 0RH1001C622 O RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.00% D...
- Page 64 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R3F2 0RH1001C622 O RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.00% D R3F3 0RH0000C622 O RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R3F4 0RH1002C622 O RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D...
- Page 65 LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS R588 0RH0752C622 O RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D R589 0RH0752C622 O RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D R590 0RH0752C622 O RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D...
- Page 66 GDZJ5.6B 26MM TP GRANDE DO34 CONNECTOR P5402 6630R-BE034 O CONNECTOR (CIRC),BOARD TO BOAR 2254-30S-T/JE611-B2G-30R POWER P5901 6630R-BE034 O CONNECTOR (CIRC),BOARD TO BOAR 2254-30S-T/JE611-B2G-30R POWER P9904 561-711C O CONNECTOR (CIRC),WAFER GIL-S-03P-S2T2-EF LG CABLE 3PI PBT00 6871R-5797A O PWB(PCB) ASSEMBLY,TOTAL DV6812E1 8TOOL KEY SH 5-14...