Service manual

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COLOR TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : CW62A

MODEL: 29FS4ALX/RL/RLX

MODEL:

29FS4ALX/RL/RLX-ZG

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

Summary of content (32 pages)

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website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : CW62A MODEL: 29FS4ALX/RL/RLX MODEL: 29FS4ALX/RL/RLX-ZG 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. POWER MUTE 10 1 2 1 2 3 Remote control handset 4 5 6 Before you use the remote control handset, please install the batteries. See the next page. 7 8 9 MENU 0 TV/AV 3 1. POWER switches the set on from standby or off to standby. 11 TV PR+ PRPR 4 VOL OK 2.
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8. FAVOURITE selects a favorite programme. 9. EYE/ (option) switches the eye function on or off. * POWER MUTE 10 1 10. MUTE switches the sound on or off. 1 2 3 4 5 6 7 8 9 MENU 0 TV/AV 2 11. TV/AV selects TV or AV mode. switches the set on from standby. exits the Teletext mode 3 11 12. I/II/ * selects the language during dual language broadcast. selects the sound output (option). 13. Q.VIEW (or YELLOW) returns to the previously viewed programme. PR 4 VOL OK VOL PR 14.
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Front panel 3 VIDEO 4 1 25 L/MONO AUDIO R 6 ON/OFF AV IN3 7 Side panel 1. MAIN POWER (ON/OFF) switches the set on or off. 2. POWER/STANDBY INDICATOR illuminates brightly when the set is in standby mode. dims when the set is switched on. 6. AUDIO/VIDEO IN SOCKETS (AV IN3) Connect the audio/video out sockets of external equipment to these sockets. 7. EYE (option) adjusts picture according to the surrounding conditions. 3. MENU selects a menu. 4.
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SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. V Scope V This specification can be applied to all the television related to CW62A Chassis. V Test and Inspection Method 1) performance : Follow the Standard of LG TV test 2) Standards of Etc.
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ADJUSTMENT INSTRUCTIONS 1. Application Object These instructions are applied to all of the color TV, CW62A. CPT Assembling 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. Assembling DY to 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) Open angle of the two tab of 6 pole magnet by isogonic angle and accord with vertical line of Red/Blue and Green. (6) Maintain as angle of (5) and rotate the tab to accord with horizontal line. In case of twisted horizontal line,repeat adjustment of (3) ~ (5) remembering the movement of Red/Green/Blue color. (7) Move the DY to best condition of convergence and attach the CPT to a rubber-chock for fixing DY. 2. White balance IIC Parameter(Address) Program Win31_wb Vcd Slave 8A B(R)_Amp Program 5.
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(6) EW WIDTH Adjust until the outmost left and right lattice of received pattern is accord with 25% of other lattice width. PIP H Position 8. Deflection setting initial data PAL Digital pattern (EU05CH) (7) EW PARABOLA Adjust so that middle portion of the outermost left and right vertical line look like parallel with vertical lines of the CPT.

OSD & TEXT LANGUAGES 0 SOUTHEAST ASIA 0 ENGLISH 1 1 EAST EU CYRILLIC TEXT 2 RESERVED 3 RESERVED 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 0 ENGLISH 1 EAST EU ALL 2 3 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 ENGLISH GREEK 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED - 12 - 0 ENGLISH 1 INDONESIAN 2 MALAY 3 VIETNAMESE 4 THAI 0 ENGLISH 1 GERMAN 2 RUM

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3 ARAB TEXT 0 ENGLISH 1 ARABIC 2 3 PARSI ARAB ALL 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 4 PARSI TEXT The same ARAB TEXT 5 SOUTHEAST W/O TEXT The same SOUTHEAST ASIA TEXT 6 WEST EU W/O TEXT The same WEST EU GREEK TEXT 7 EAST EU W/O TEXT The same EAST EU CYRILLIC TEXT 8 ARAB W/O TEXT 9 CHINA, INDIA W/O TEXT 0 ENGLISH 1 FRENCH 2 ARAB 3 URDU 0 ENGLISH 1 FRENCH 2 ARAB 3 PARSI 0 ENGLISH 1 FRENCH 2 ARAB 3 URDU 4 PARSI 0 ENGLISH 1 CHINESE 0 ENGL

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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 OK Check pin3 Reset Voltage OK OK Check pin8, 12 SCL, SDA NO Check IC12(EEPROM) & SCL, SDA, Line OK Replace IC501 P13A (R, G, B out of IC501) P13A (R

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PRINTED CIRCUIT BOARD MAIN - 18 -

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POWER CONTROL SIDE-A/V LED + PRE-AMP DEFLECTION HARMONICS - 19 -

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BLOCK DIAGRAM - 20 -

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MEMO - 21 -

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EXPLODED VIEW 400 913 170 150 P1112 112 503 520 580 501 300 540 331 330 320 120 570 600 530 310 - 22 -

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The components identified by mark critical for safety. Replace only with part number specified. EXPLODED VIEW PA RTS LIST LOCA. No. PART No. 112 6335929005L CPT,ITC A68ERS870X 02 L(+0.50G) 0G LG-PHILIPS DISPLAYS 29INCH 120 6400VA0025E Speaker,Fullrange C163A01K1451 FERRITE 15W 8OHM 86DB 110HZ EAB30828501 Speaker,Fullrange C163A01K1451. ND 15W 8OHM 86DB 110HZ 193 X 57 X 44.4 LUG 150 6140VC2007T Coil,Degaussing 23OHM AL 80T 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 LOCA. NO PART NO D405 0DRTW00164B RGP15J 600V 1.3V 5UA 50A 250NSEC DO15 D406 0DRTW00164B RGP15J 600V 1.3V 5UA 50A 250NSEC DO15 IC DESCRIPTION IC12 0IAL241610B AT24C16A-10PI-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 LOCA. NO RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible LOCA. NO PART NO C1490 0CF7041R460 PCMP389 42704 0.7uF 5% 250V MPP -40TO C503 0CQ6821N509 PEI682K2AT 6.8nF 10% 100V PE -40TO+85 C17 0CN1030F679 RH EP050 Y103M-B-B 10nF 20% 16V X5R - C504 0CE107DD618 SMS5.

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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 DESCRIPTION LOCA. NO PART NO DESCRIPTION C590 0CE225DK618 EGR225M050T1G1C11G 2.2uF 20% 50V 20MA C901 0CE475DR618 EGR475M250T1G1G11G 4.7uF 20% 250V 70M C591 0CN1040K949 CH UP050 F104Z-B-B Z 100nF -20TO+80% C903 181-033S DCH122K39Y5PP7VK7A 1.

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For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO PART NO P201A 366-932E P201B 387-A06J P22B 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 GIL-G-06P-S3T2-E 6P 2.50MM 1R STRAIGH R205 0RD0752F609 RD-96T1J75R0 75OHM 5% 1/6W 3.2X1.8MM GIL-G-06 GIL-J-06 500mM 2.50MM 6P UL1 R206 0RD0752F609 RD-96T1J75R0 75OHM 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; 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 LOCA. NO PART NO DESCRIPTION R408 0RD6801F609 RD-96T1J6K80 6.8KOHM 5% 1/6W 3.2X1.8M R568 0RD0912F609 RD-96T1J91R0 91OHM 5% 1/6W 3.2X1.8MM R409 0RS2002H609 RS-92T1J20K0 20KOHM 5% 1/2W 9.0X3.0MM R569 0RD1000F609 RD-96T1J100R 100OHM 5% 1/6W 3.

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For Capacitor & Resistors, the characters at 2nd and 3rd digit in the P/No. means as follows; DESCRIPTION LOCA. NO CC, CX, CK, CN : Ceramic CQ : Polyester CE : Electrolytic LOCA. NO PART NO R844 0RD6801F609 RD-96T1J6K80 6.8KOHM 5% 1/6W 3.2X1.8M X01 156-A01Z HC-49/U 24.576MHZ 50PPM 24.576MHZ 50P R845 0RD0471F609 RD-96T1J4R70 4.7OHM 5% 1/6W 3.2X1.8MM Z101 166-A01B K3953M 33.90MHZ 38.90MHZ 17X3.9X8.7MM R847 0RD3900F609 RD-96T1J390R 390OHM 5% 1/6W 3.2X1.