Service manual

ManualsBrandse-motion ManualsLCD TV1503 UOCIII

COLOR TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : CW62C

MODEL : 25FB7RLE

MODEL : 25FB7RLE-T1

website:http://biz.LGservice.com

Oct, 2007

Printed in ChinaP/NO : MFL37794424

Internal Use Only

Summary of content (33 pages)

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Internal Use Only website:http://biz.LGservice.com COLOR TV SERVICE MANUAL CHASSIS : CW62C MODEL : 25FB7RLE MODEL : 25FB7RLE-T1 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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CONTENTS Contents ...................................................................................................................2 Safety Precautions..............................................................................................3 Control Descriptions..........................................................................................4 Specifications........................................................................................................7 Adjustment Instructions ......
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SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in 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. Do not modify the original design without permission of manufacturer.
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DESCRIPTION OF CONTROLS All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. 1 11 13 14 10 2 1 2 3 4 5 6 7 8 9 0 3 Before you use the remote control handset, please install the batteries. See the next page. 1. POWER switches the set on from standby or off to standby. 8 VOL OK 2. NUMBER BUTTONS Switches the set on from standby or directly select a number. 3. MENU selects a menu.
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8. FAVOURITE selects a favorite programme. 1 9. EYE/ 10 (option) switches the eye function on or off. * 11 13 Q.VIEW LIST 14 10. MUTE switches the sound on or off. 11. TV/AV selects TV or AV mode. switches the set on from standby. exits the Teletext mode. 2 1 2 3 4 5 6 7 8 9 3 12. I/II/ 0 * selects the language during dual language broadcast. selects the sound output (option). 13. Q.VIEW (or YELLOW) returns to the previously viewed programme. 8 PR 4 VOL 14.
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SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. V Scope This specification can be applied to all the television related to CW62C Chassis. V Test and Inspection Method 1) Capability: It follows the TV QC Standard of LGE. 2) Standards of Etc. requirement - Safety: IEC60065 -EMC : CE standard(EN55020,EN55013) V Band Standard input Voltage Remark Miesast/Africa LG 110 ~240 V 50/60Hz Initial EU/CIS LG 230V 50Hz 2.
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ADJUSTMENT INSTRUCTIONS 1. Application Object This specification can be applied to all the television related to CW62C Chassis CPT Assembly As preparatory operations before assembling CPT, wind cotton Tape for protecting to CPT NECK and DY, CPT connection parts. At this moment, end of tape should be over-lapped and wound in direct route to the NECK. Integrate DY and Magnet into CPT Fix the Magnet to the position as shown picture below. Be careful not to make CPT neck shadow while adjusting DY. 2.
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5) Widen two tabs of 6pole Magnet with equal angles and accord red, blue vertical lines at the center of screen. 6) With keeping angle of "e. clause", repeat the adjustment from c to e keeping in mind the movement of red, blue, green when the horizontal lines are twisted. 7) Move DY up, down, left, right and make the convergence to be optimal condition and stick rubber wedge to CPT so that the DY not to move. 2. White balance IIC Parameter (Address) Program Win31_wb 3.3.1.
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4. V AMPLIT (V AMPITUDE) 11. H PARALL (ANGLE) In angle adjustment, adjust until inclination of center vertical line should be vertical precisely. Adjusting Point 12. SCORRECT (S CORRECTION) Adjust so that the lattice scopes of top, center, bottom of received pattern are the same. Use the default setting data (Initial data) of CPT owing to using DY data of CPT. PAL signal: Adjust upper and lower part of circle from the effective screen of the CPT to be distance of 6~7mm . 13.
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V SLOPE Vertical slope V SHIFT Vertical shift Vertical linearity V AMPLIT Vertical amplitude H-SHIFT Invar AK IRICO 1.
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[Table 7] SERVICE 4 Adjust Item WS Adjust explanation WHITE STRETCH [Table 8] OPTION 1,2,3,4,5 29" Flat 29"S-SLIM TS Sus TSAK 1 1 1 29" Flat AK Invar AK 1.

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OSD & TEXT LANGUAGES 0 1 Southeast Asia TEXT EAST EU CYRILLIC TEXT 0 ENGLISH 1 SOUTHEAST ASIA 2 RESERVED 3 RESERVED 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 0 ENGLISH 1 EAST EU ALL 2 2 WEST EU GREEK TEXT ENGLISH RUSSIAN 3 RESERVED 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 0 ENGLISH 1 EU 7EA 2 3 WEST EU ALL ENIGLISH GREEK 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED Copyright©2007 LG Electronics.Inc. All right reserved.

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3 ARAB TEXT 0 ENGLISH 1 ARABIC 2 3 FARSI ARAB ALL 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 4 FARSI TEXT Same as ARAB TEXT 5 Southeast Asia W/O TEXT Same as Southeast Asia TEXT 6 WEST EU W/O TEXT Same as WESTEU GREEK TEXT 7 EAST EU W/O TEXT Same as EASTEU CYRILLIC TEXT 8 ARAB W/O TEXT 9 CHINA, INDIA W/O TEXT 10 Korea/Middle south America 11 Taiwan 0 ENGLISH 1 FRENCH 2 ARAB 3 URDU 0 ENGLISH 1 FRENCH 2 ARAB 3 PARSI 0 ENGLISH 1 FRENCH 2 ARAB 3 URDU

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No. ITEM Shipping condition 1 Power OFF 2 3 Input TV MEMORY CH. MEMORY refer to CHANNEL manage benchmark 4 SOUND 30 STEPS 5 MUTE OFF 6 PSM DYNAMIC 7 XD ON 8 SSM FLAT only 29FU3 Tool is Music 9 TORBO SOUND OFF only 29FU3 Tool is ON 10 AVL OFF 11 BALANCE 0 12 ON/OFF TIME OFF 13 AUTO SLEEP OFF 14 CHILD LOCK OFF 15 DEGAUSS OFF 16 EYE OFF OPTION 17 TILT 0 OPTION 18 BLUE BACK OFF OPTION 19 BOOSTER OFF OPTION Remarks 4.2.

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TROUBLE SHOOTING 1.

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3) No Raster (2/2) Check the B+ at D829 cathode Normal Is the voltage each pin voltage of IC501 Abnormal OPEN NO Check Fuse of AC line Check/ Replace Fuse OK Check pin 73 of IC501(H_Out) Check the in/out of regulator(IC822, IC823, IC824) Check the voltage of C832 Check/ Replace IC501 NO Check/ Replace DB801 Check Q402 collector waveform Check the voltage pin4 of IC810 Check/ Replace Q402 NO Check/ Replace Fuse and IC810 Check T401 & each pin voltage Check/ Replace IC810, IC802, Q830 Check

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4) No Picture/ No Sound Is any OSD displayed? NO OK OK Check IC501 pin 83, 84, 85 (R, G, B out) Check receiving system in MENU & execute Auto - Program OK Does the auto - Program operate properly NO OK Store on manual -program MENU NO Check the waveform pin73(H-out) NO Check IC501 pin 83, 84, 85 (R, G, B out) Check SMPS Trans Secondary Voltage Go to No sound/ picture OK OK Check pin3 Reset Voltage OK OK Check pin7, 8 SCL, SDA NO Check IC12(EEPROM) & SCL, SDA, Line OK Replace IC501 P20A (R,

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EXPLODED VIEW PARTS LIST LOCA. No. PART No. The components identified by mark critical for safety. Replace only with part number specified. DESCRIPTIONS 112 EAK38980703 CPT,ITC A59QDC820X 52 M 25INCH FLAT +0.3G 4 120 EAB30827501 Speaker,Full Range F 7 FERRITE 10W 8OHM 84DB 130HZ 12 121 4810V00088B Bracket MOLD PP SPEAKER CE-29K30 NON PP 150 6140VC2007G Coil,Degaussing CT-25H30R 15OHM AL 50T 0.

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REPLACEMENT PARTS LIST For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO CC, CX, CK, CN : Ceramic CQ : Polyester CE : Electrolytic PART NO RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION IC LOCA. NO PART NO DESCRIPTION D414 0DRDC00014D RGP15J 600V 1.3V 5UA 50A 250NSEC DO D601 0DS141489AB 1N4148 1V 100V 150MA 500MA 4NSEC 50 IC12 0IAL241610B AT24C16A-10PU-2.7 16KBIT 2KX8BIT 2.

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For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; DESCRIPTION CC, CX, CK, CN : Ceramic CQ : Polyester CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible LOCA. NO PART NO LOCA. NO PART NO C204 0CN4710K519 RH UP050 B471K-B-B 470pF 10% 50V Y5 C530 0CN2220F569 RH EP050 X222K-B-B 2.2nF 10% 16V X7 C205 0CN1010K519 RH UP050 B101K-B-B 100pF 10% 50V Y5 C531 0CN2231K949 CHUP025F223Z-B-B 0.

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For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; CC, CX, CK, CN : Ceramic CQ : Polyester CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible LOCA. NO PART NO LOCA. NO PART NO DESCRIPTION C605 0CE476DF618 SMS5.0TP16VB47M 47uF 20% 16V 0A -40 DESCRIPTION L102 0LA0102K139 Inductor,Wire Wound,Axial LAL04TB100K 10UH C607 0CE476DH618 SMS5.

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For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; DESCRIPTION CC, CX, CK, CN : Ceramic CQ : Polyester CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible LOCA. NO PART NO LOCA. NO PART NO J564 0RD1001F609 RD-96T1J1K00 1KOHM 5% 1/6W 3.2X1.8M R315 0RN0431J607 RN-01T3J4R30 4.3OHM 5% 1W 12.0X4.0M J565 0RD1001F609 RD-96T1J1K00 1KOHM 5% 1/6W 3.2X1.8M R316 0RD1502F609 RD-96T1J15K0 15KOHM 5% 1/6W 3.2X1.

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For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; CC, CX, CK, CN : Ceramic CQ : Polyester CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible LOCA. NO PART NO LOCA. NO PART NO R553 0RD1000F609 RD-96T1J100R 100OHM 5% 1/6W 3.2X1.8 DESCRIPTION R832 0RD3902F609 RD-96T1J39K0 39KOHM 5% 1/6W 3.2X1.8 DESCRIPTION R554 0RD3900F609 RD-96T1J390R 390OHM 5% 1/6W 3.2X1.8 R833 0RN9102F409 RN-96T1F91K0 91KOHM 1% 1/6W 3.2X1.

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LOCA. NO PART NO SG913 6918VAX002K DESCRIPTION LOCA. NO PART NO DESCRIPTION SSA-351M AXIAL 350V 350V 0A 7.5MM T FILTER & CRYSTAL F801 0FS4001B53C Fuse,Time Delay 0215 004. CERAMIC 250V 4A FB401 125-022K Filter,Bead 125-022K 20OHM 3.5X6MM AXIAL FB802 125-022K Filter,Bead 125-022K 20OHM 3.5X6MM AXIAL FB803 125-022K Filter,Bead 125-022K 20OHM 3.5X6MM AXIAL FB804 125-022K Filter,Bead 125-022K 20OHM 3.5X6MM AXIAL FB833 125-022K Filter,Bead 125-022K 20OHM 3.

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P/N:EBY37965601

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SVC.