1. Manuals
  2. Brands
  3. LG Manuals
  4. TV
  5. Lafinion 82W
  6. Service manual

LG Lafinion 82W Service Manual

Hide thumbs

Advertisement

Table of Contents

COLOR TV
SERVICE MANUAL
CHASSIS : MC-035B
MODEL: Lafinion 82W
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

Advertisement

Table of Contents
loading

Related Manuals for LG Lafinion 82W

Summary of Contents for LG Lafinion 82W

  • Page 1 COLOR TV SERVICE MANUAL CHASSIS : MC-035B MODEL: Lafinion 82W CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATIONS ..................4 CONTROL DESCRIPTIONS ..............5 ADJUSTMENT INSTRUCTIONS ............. 8 TROUBLE SHOOTING ................14 PRINTED CIRCUIT BOARD ..............20 BLOCK DIAGRAM ................. 25 EXPLODED VIEW .................. 28 EXPLODED VIEW PARTS LIST ..............29 REPLACEMENT PARTS LIST ............... 30 SVC.

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORT ANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

  • Page 4: Specifications

    Feature and Function Item Specification Item Specification Teletext TOP,FLOF 2000 page(option) Receiving Broadcasting PAL/SECAM-B/G, D/K REMOCON LG code Method PAL I/I,SECAM L/L’(option) AV input 4(Side or Front:1 Rear:3) NTSC M(option) Component input 2(Rear:option) AV Receiving System NTSC M/PB,PAL BG,DK,I PERI TV connector...

  • Page 5: Control Descriptions

    2. PSM(Picture Status Memory) recalls your preferred picture setting. 3.ARC(Aspect ratio Control) changes the picture format. 4.VCR BUTTONS control a LG video cassette recorder. 5.DVD BUTTONS. control a LG DVD. 6.PIP BUTTONS(option) switches the sub picture on or off. PR +/- selects a programme for the sub picture.
  • Page 6 13.MAIN STILL freezes motion of the picture. 14. I/II selects the language during dual language broadcast. selects the sound output(option). 15.SLEEP sets the sleep timer. 16.EYE/*(option) switches the eye function on or off. 17.TELETEXT BUTTONS(option) These buttons are used for teletext. For further details, see the ‘Teletext’...
  • Page 7 SLEEP SLEEP TURBO D R P C THEATER SLEEP SLEEP Lafinion 82W / 70W / 72 series Side panel 1. MAIN POWER (ON/OFF) (Volume Down/Up) switches the set on or off. adjusts the volume. adjusts menu settings. 2. LED (Light Emitting Diode) DISPLAY...

  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1.Safety Precautions 4. Purity & convergence Adjustment 1. It is safe to adjust after using insulating transformer between 4-1. Preparation for Adjustment the power supply line and chassis input to prevent the risk of electric shock and protect the instrument. Adjustment should be operated when using the CPT(without 2.
  • Page 9 6) The TV set receives PAL-B/G Digital pattern. shown and then change oppositely to finish the adjustment at the showing place. NOTE : If production line doesn’t the production line of LG TV,receive available deflection adjustment pattern. 7. White balance Adjustment...
  • Page 10 NTSC 480P 1080I Menu Range 100HZ 60HZ 0 ~ 3F 0 ~ 3F 0 ~ 3F 0 ~ 3F 0 ~ 3F 0 ~ 3F A-ANG 0 ~ 3F Fig. 2 <50HZ> A-BOW 0 ~ 3F 0 ~ 3F 0 ~ 3F U-VL 0 ~ 0F L-VL...
  • Page 11 9-2. Adjustment Method Table 3. OPTION 3 Function 1) Input data directly by the buttons corresponded with Option Code Function Remark OPTION1 ??(0~255), OPTION2 ??(0~255), OPTION3 WIDE 4 : 3 TV ???(0~250). 2) Option4???(0~116) controls correspondinglines directly 16 : 9 TV relate with OSD and TXT LANG.
  • Page 12 Table 4. OPTION 4 Funtion OPTION Language Funciton CODE LANG E Only English+EU 5 English+Other EU FARSI ARAB URDU E + HINDI E + I + M + V E + THAI E + CHINA TXT LAN West Europe East Europe Turkey EU1 EAST EU2 Cyrillic 1...
  • Page 13 - 13 -...

  • Page 14: Trouble Shooting

    TROUBLE SHOOTING Check pin 2 of P004A. Check / Replace Check the voltage at Q871,Q852,Q854, pin 10 of P004A. IC803,IC851 2Vp-p Check the H-DRV voltage at pin 5 of P214A. Check / Replace Check / Replace IC001,Q002. FR359,FR360,D339,D349,IC301. 5.5Vp-p Check / Replace Check the voltage of C404(+).
  • Page 15 Check if heater element is lighting. Check the heater voltage. Increase the screen Check/Replace voltage of FBT. FR442,R910. Check/Replace Screen is black. Retrace line is CPT. visible. Check the waveform Check FBT & CPT socket at pin 3 of ic901,902,903 &...
  • Page 16 Check the voltage at pin1,15 of IC650(SOUND AMP). D850,F851. Check the waveform at PIN 8,13 of IC 650. 2.5V CHECK/REPLACE CHECK/REPLACE Q601,Q602,L601. IC650. CHECK/REPLACE TU101. Check the waveform at pin 11 of P901B. NORMAL Checkthe waveform at pin10 of HIC951. Q501,IC501S.
  • Page 17 Check the waveform at pin 21,22 of IC601. Check / Replace Check the waveform at IC601. pin 1,3 of IC602. Check / Replace Check / Replace H/P JACK. IC603. DON’T CATCH CHANNEL(MAIN) Check the voltage at pin9 of TU101. Check/Replace Check the voltage at R403,FB854,D861,ZD102.
  • Page 18 Check the waveform at pin 12 of IC001. Check /Replace Check the waveform at IC201S,Q206. pin121 of IC101. Check /Replace Check the waveform at Q301. pin111,112,113 of IC101. Check /Replace Check /Replace IC101. IC501S. Check the voltage at pin 1,6 of IC301. Check / Replace Check the waveform FR359,FR360,D339,D349.
  • Page 19 MEMO - 19 -...

  • Page 20: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN - 20 -...
  • Page 21 COMPONENT LOCATION GUIDE(MAIN) C101..A2 C402 ..D4 C638..B4 D402 ..G3 L205 ..C5 Q852 ..D1 R314 ..D4 R632..A3 TP7..A3 C102..A2 C403 ..G3 C639..B4 D403 ..D5 L206 ..D5 Q854 ..E3 R318..E4 R633..A3 TP8..A2 C103..A2 C404 ..G3 C640..B4 D405 ..D5 L207 ..C5 Q855 ..D3 R324 ..D4 R634..A3 TP9..A2...
  • Page 22 MICOM(TOP) CONTROL MICOM(BOTTOM) - 22 -...
  • Page 23 100Hz(TOP) 100Hz(BOTTOM) - 23 -...
  • Page 24 SOUND POWER SIDE A/V - 24 -...

  • Page 25: Block Diagram

    BLOCK DIAGRAM 1. MAIN - 25 -...
  • Page 26 2.100HZ/PROGRESSIVE - 26 -...
  • Page 27 3.MICOM - 27 -...

  • Page 28: Exploded View

    EXPLODED VIEW - 28 -...

  • Page 29: Exploded View Parts List

    COIL,DEGAUSSING KOREA TRADING 32 TURN L=600 170-797X CPT EARTH,32 144T 2LUG 1P*2 . 174-322E POWER CORD, W/FILTER L=400(179B) 3091V00528D CABINET ASSEMBLY,RT-32FZ40RB(SET) LG CPT NON MC035B . 5020V00794A BUTTON,CONTROL 32FZ40 ABS, HF-380 6KEY NON 5020V00553L BUTTON,POWER RN-17LZ11E ABS, HF-380 1KEY . 3809V00368E...
  • Page 30 SVC. SHEET : 3854V A0123A-S1 SVC. SHEET SVC. SHEET...

  • Page 31: Replacement Parts List

    KRC103M(AT) TO-92M TP KEC IC101S 0IMCRMN016B VSP9427B-XZ-C3 MICRONAS 144P Q1102 0TR103009AD KRC103M(AT) TO-92M TP KEC 0ICTMLG010A IC102S LGDT1000B LG IC QFP 128P TRAY DRP2 Q1103 0TR103009AD KRC103M(AT) TO-92M TP KEC IC106S 0ISA721700C LA7217M MFP14 TP Q1104 0TR103009AD KRC103M(AT) TO-92M TP KEC...
  • Page 32 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 33 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 34 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 35 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 36 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 37 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 38 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 39 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 40 Feb.,2004 P/NO : 3828VD0155F Printed in Korea...
  • Page 41 P/N: 3854VA0123A-S1(1/2) DATE: 2003.07.17...
  • Page 42 P/N: 3854VA0123A-S1(2/2) DATE: 2003.07.17...

Table of Contents