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website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
COLOR TV
SERVICE MANUAL
CHASSIS : CW62A
MODEL : 29FX6ALX
MODEL : 29FX6ALX-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 Instructi
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PR+ SWAP Q.VIEW 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 1 10 12 3 Remote control handset 45 6 Before you use the remote control handset, please install the bat- 2 teries. See the next page. 78 9 1. POWER switches the set on from standby or off to standby. MENU 0 TV/AV 3 11 TV 2. NUMBER BUTTONS switches the set on from standby or directly select a num
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Q.VIEW 8. FAVOURITE selects a favorite programme. 9. EYE/ (option) POWER MUTE * switches the eye function on or off. 1 10 12 3 10. MUTE switches the sound on or off. 45 6 2 11. TV/AV 78 9 selects TV or AV mode. switches the set on from standby. MENU 0 TV/AV exits the Teletext mode 3 11 12. I/II/ * selects the language during dual language broadcast. PR selects the sound output (option). VOL VOL OK 4 13. Q.VIEW (or YELLOW) returns to the previously viewed programme. PR 14. LIST (or BLUE) 13 14 d
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VIDEO L/MONO AUDIO R Front panel Side panel 5 7 2 6
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SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. V Scope V Test Condition This specification can be applied to all the television related to 1) Temperature : 20 ± 5°C(CST : 40 ± 5°C) CW62A Chassis. 2) Relative Humidity : 65 ± 10% 3) Power voltage : AC110-240V~, 50/60Hz 4) Follow each drawing or spec for spec and performance of V Test and Inspection Method parts,based upon P/N of B.O.M 1) performance : Follow the Standard of LG TV test 5) Warm
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ADJUSTMENT INSTRUCTIONS 1. Application Object These instructions are applied to all of the color TV, CW62A. As preparatory operations before CPT Assembling assembling CPT, wind cotton Tape for protecting to CPT NECK and DY, CPT 2. Notes connection parts. At this moment, end (1) Because this is not a hot chassis, it is not necessary to use of tape should be over-lapped and an isolation transformer. However, the use of isolation wound in direct route to the NECK. transformer will help protect test
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(5) Open angle of the two tab of 6 pole magnet by isogonic 2. White balance IIC Parameter(Address) angle and accord with vertical line of Red/Blue and Green. Program Win31_wb TWB Win31_wb Speed Delay TWB (6) Maintain as angle of (5) and rotate the tab to accord with Vcd Slave 8A Eeprom_Slave 1 30 A0 horizontal line. In case of twisted horizontal line,repeat adjustment of (3) ~ (5) remembering the movement of Red/Green/Blue color. B(R)_Amp B(R)_Cut G_Amp G_Cut (7) Move the DY to best condition of
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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) Deflection setting initial data (SERVICE 2) * Fix : Don’t change data (7) EW PARABOLA Adjust so that middle portion of the outermost left and right 29” vertical line look like parallel with vertical lines of the CPT. Item Description Adjust 50Hz 60Hz (8) EW UPCORNER & (
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OPTION 1, 2, 3, 4 9. Service adjustment data table ITEM Description Picture setting service data1 (SERVICE 1) OPTION1 INCH 29 S-Slim/ 29 N-Flat ITEM DESCRIPTION 29” S-SLIM SYSTEM BG/DK/I/M, BG/DK/I/L ACG take over 25 AGC 200PR W/O TXT=>200PR, W/TXT=>100PR Red Gain 32 RG TOP TOP=>Germany, Swiss, Austria, Italy Green Gain 32 GG ACMS Auto channel memory system Blue Gain 32 BG CH-AU China & Australia Frequency table Black level offset Red 32 BLO-R BOOSTER Black level offset Green
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OSD & TEXT LANGUAGES 0 SOUTHEAST ASIA 0 ENGLISH 1 0 ENGLISH 1 INDONESIAN 2 MALAY 3 VIETNAMESE 4 THAI 2 RESERVED 3 RESERVED 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 1 EAST EU CYRILLIC TEXT 0 ENGLISH 1 EAST EU ALL 0 ENGLISH 1 GERMAN 2 RUMANIAN 3 POLISH 4 HUNGARIAN 5 CZECH 6 RUSSIAN 7 BULGARIAN 2 ENGLISH RUSSIAN 0 ENGLISH 1 RUSSIAN 3 RESERVED 4 RESERVED 5 RESERVED 6 RESERVED 7 RESERVED 3 WEST EU GREEK TEXT 0 ENGLISH 1 EU 7EA 0 ENGLISH 1 GERMAN 2 FRENCH 3 ITALIAN 4 SPANISH 5 DUTCH 6 POR
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3 ARAB TEXT 0 ENGLISH 1 ARABIC 0 ENGLISH 1 FRENCH 2 ARAB 3 URDU 2 PARSI 0 ENGLISH 1 FRENCH 2 ARAB 3 ARAB ALL 3 PARSI 0 ENGLISH 1 FRENCH 2 ARAB 3 URDU 4 PARSI 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 The same ARAB TEXT 9 CHINA, INDIA W/O TEXT 0 ENGLISH 1 CHINA 0 ENGLISH 1 CHINESE 2 HINDI 0 ENGLISH 1 HI
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TROUBLE SHOOTING 1. RF-STEREO MODEL 1) PICTURE OK / NO SOUND Selected correct system in menu OK NO Check the waveform IF 1 of TU101 Check/ Replace TU101 or Input signal OK NO NO Check the voltage at pin 3, 9, 16, 43, Check the waveform at pin 4, 5 of IC501 Check/ Replace IC501 86, 88, 90 of UOCIII OK NO Check the waveform at pin 4, 12 of Check the voltage at pin 57, 58 of IC601 UOCIII OK NO Check the waveform at pin 6 of IC601 Check/ Replace Q603 OK NO Check the waveform at pin 1, 2, 14, 15 Chec
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3) No Raster (2/2) + Check the B at D829 cathode Normal Abnormal OPEN NO Is the voltage each Check Fuse of AC line pin voltage of IC501 Check/ Replace Fuse OK Check the in/out of regulator(IC822, NO Check pin 73 of Check the voltage of IC823, IC824) IC501(H_Out) C832 Check/ Replace Check/ Replace DB801 IC501 Check Q402 NO collector waveform Check the voltage pin4 of IC810 Check/ Replace Q402 Check/ Replace Fuse and IC810 Check T401 & each pin voltage Check/ Replace IC810, IC802, Q830 Check/ Repl
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4) No Picture/ No Sound Is any OSD displayed? NO OK OK OK Check IC501 pin 83, Check receiving system in MENU 84, 85 (R, G, B out) & execute Auto - Program Does the auto - Program operate properly NO OK Store on manual -program MENU NO NO Check the waveform Check IC501 pin 83, Check SMPS Trans Go to No sound/ pin73(H-out) 84, 85 (R, G, B out) Secondary Voltage picture OK OK Check pin3 Reset Voltage OK NO Check pin8, 12 SCL, Check IC12(EEPROM) SDA & SCL, SDA, Line OK OK Replace IC501 P13A (R, G, B
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2. AV STEREO/ MONO MODEL Select correct system in menu OK OK Check the connection of AV equipment AV Does the auto - Program Check TU101 Tuner operate properly OK OK NO Check the voltage of pin3, 9, Check the waveform at pin57, 58 of IC501 16, 43, 86,88,90 of IC501 OK NO Check the waveform at Check the signal line of SPK-N,P pin4, 12, of IC601 OK NO Check the waveform at Check pin5 (mute) of IC501 pin6 of IC601 OK NO NO Check the waveform at Check the voltage at Check/ Replace pin1, 2, 14, 15 of
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PRINTED CIRCUIT BOARD MAIN
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POWER SIDE-A/V CONTROL SMPS LED HARMONIC
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BLOCK DIAGRAM
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120 EXPLODED VIEW 943 400 174 550 300 501 520 580 540 530 330 600 590 310 700 913 170 150 112
