website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MC-049A MODEL:CT-29M65VE CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS Contents ...................................................................................................................2 Safety Precautions..............................................................................................3 Control Descriptions..........................................................................................4 Specifications........................................................................................................6 Adjustment Instructions.......
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.
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 11 1 Before you use the remote control handset, please install the batteries. See the next page. 1 2 3 4 5 6 7 8 9 ARC 0 TV/AV PICTURE MENU 2 1. POWER switches the set on from standby or off to standby. 3 SOUND 4 OK T U R B O 12 2.
15. LIST displays the programme table. 16. EYE/ (option) switches the eye function on or off. * POWER MUTE 11 1 17. SLEEP sets the sleep timer. 18. Q.VIEW returns to the previously viewed programme. 2 19. FAVOURITE selects a favorite programme. 3 1 2 3 4 5 6 7 8 9 ARC 0 TV/AV PICTURE MENU 12 SOUND 4 20. PIP BUTTONS (option) PIP switches the sub picture on or off. PR +/5 selects a programme for the sub picture. SWAP alternates between main and sub picture.
SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. F Scope This specification can be applied to all the television related to MC-049A Chassis. Chassis Market MC049A Middle East, Africa F Test Condition Brand Standard input Voltage LG EU 110-240Vac, 50/60Hz 230Vac, 50/60Hz 1) Temperature :20 ± 5°C(CST : 40 ± 5°C) 2) Relative Humidity:65 ± 10% 3) Use the parts only designated in B.O.M.,PARTS SPEC.,or drawings.
ADJUSTMENT INSTRUCTIONS 1. Application Object 4. Purity & Convergence adjustment These instructions are applied to all of the color TV, MC-049A. 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. White balance IIC Parameter (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 fixed DY. 5.
Menu Variable range N50Hz(PAL) 29” N60Hz(NTSC) 29” VS -512~511 4 10 VA -512~511 80 70 VL -512~511 -70 -70 SC -512~511 140 140 HS 32~2047 110 130 EW -256~255 -70 -69 ET -512~511 -12 -15 EP -512~511 -80 -78 ANGLE -512~511 0 0 BOW -512~511 0 0 UPCOR -512~511 8 8 LOCOR -512~511 20 20 PIP_H 0~40 15 15
8-4. OPTION2 Function Option Code TSEARCH 0 Without TURBO SEARCH 1 With TURBO SEARCH 0 100 PROGRAM SAVE 1 200 PROGRAM SAVE 0 Without EYE 1 With EYE 200PR EYE Function 0 TX019 1 0 8KEY 1 8KEY 0 4KEY 1 4KEY 8-5.
TROUBLE SHOOTING RF- STEREO Selected correct system In menu OK Check the waveform IF 1 of TU101 NO Check / Replace TU 101 NO NO Check The Voltage At pin 2, 19, 20, 21, 24 of IIC11 OK Check the waveform At pin 4, 5 of IC11 Check The voltage At pin of IC821, IC822, Q807 OK NO Check the waveform At pin 2, 4 of IC601 Check / Replace C821, IC822, Q807 OK Check the Voltage At pin 6 of IC601 NO Check / Replace Q601 OK Check the waveform At pin 8, 9, 11, 12 of IC601 OK Check the Voltage At pin 5
NO RASTER CHECK B+ At D829 cathode Normal Abnormal Is the voltage at each pin voltage of IC11 Yes No Check & Replace IC11 No Check & Replace Q402 No Check & Replace T401 No Check & Replace Q401 Check pin 60 Of IC11(H - Out) Yes Open Check Fuse of AC line No Check the In/out of regulator (IC821, IC822 IC823, IC824 IC825) Check Q402 Collector waveform Check / Replace Fuse Ok Check the Voltage Of C803 Ok No 140 ~ 310V Check the Voltage Pin 4 of IC801 Ok Yes 18 ~ 20V Check / Replace IC801, IC802
No Picture / No Sound Is any OSD displayed? OK No OK Check receiving system in MENU & execute Auto - Program. Check IC11 pin71,72,73 (R,G,B out) OK Does the auto - Program Operate properly. No OK Store on manual - program MENU No Check pin40(V out 1) 1V p-p Check 1.8V, 3.3V, 5V DC Voltage No Check SMPS Trans Secondary Voltage OK No Check pin18 Reset Voltage 3.3V DC No OK Check pin57, 58 SCL, SDA 3.
AV Stereo Select correct system In menu OK OK Check the connection Of AV equipment Check the the waveform At pin16, 17 of IC11 AV OK NO Check TU101 Tuner OK Check the waveform At pin4, 5, of IC11 NO Check the voltage Of pin2, 19, 20, 21,24 of IC11 NO Check the signal line of SPK-L,R OK Check waveform At pin 2, 4 of IC601 OK NO Check the voltage At pin6 of IC601 Check pin 55 (mute) of IC11 OK Check the waveform At pin 8, 9, 11, 12 of IC601 NO Check the vpltage At pin7, 5 of IC601 NO C
PRINTED CIRCUIT BOARD MAIN - 15 -
SIDE A/V CONTROL POWER - 16 -
- 17 - 110V( Flat) 120 V( No rm al) 18 33V 16 17V 13 So und Vcc 6.5V 12 T802 14V 11 78R05 IC822 14V FBT 5V 5V IC821 3. 3V Relay IC853 ST-3. 3V ST 5V H-DRIVE 78S06 IC824 ST-1.8V IC825 VM Tuner ( Main) ST-1.8V IC11 VCT49XYI 3.3V SMPS TRANS 14V 8V Tilt ( Op t .) 12V 200V( FBT) Tuner ( Sub ) 9V EYE( Op t . ) ST-3.3V [ Po wer ] IC601 PIP & AV SW ( OPT.
- 18 - B/Pb G/ Y R/ Pr C3 Y3 V3 V2 V1 AIN1 L/ R AIN2 L/ R AIN3 L/ R SW1 SUB MAIN (( (( SAW LA7222 L/ R LA42071 LA42072 LA42152 IFIN+ IFIN- AOU T1 VOUT 1/2 PIP VIDEO RIN GIN BIN Va Vb RGB o ut SVM o ut Hf b Hout KEY IR SIF VCTi 49xxl SPKR-R SPKR-L Vid eo VIDEO AUDIO H/ P R G PIP STICK PRESET CLK B GAME MODULE PR+ + 1. 8V + 110V + 12V + 5V + 3. 3V SVCC PR- HS VS OK Menu POWER. STR X6757 HOR. / EW VER.
MEMO - 19 -
EXPLODED VIEW 913 150 153 943 400 170 112 174 520 120 550 310 501 540 600 330 320 601 300 700 - 20 -
The components identified by mark critical for safety. Replace only with part number specified. EXPLODED VIEW PARTS LIST LOCA. No. PART No. DESCRIPTIONS 112 2426VSF0013 CPT SET, 29” SF A68KYN690X000MYB BARE (L,N,M,K,P) 120 120-C77G 150 6140VC2001R COIL,DEGAUSSING 29 FLAT (W) SELLA TECH 15 OHM 58T/0.
REPLACEMENT PARTS LIST For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic PART NO RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION LOCA. NO PART NO D407 0DRTW00164A RGP10J TP52 DO41 .V 1A 30A .
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; DESCRIPTION LOCA. NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic LOCA. NO PART NO C1101 0CE107DD618 100UF STD 10V M FL TP5 C513 0CN1040K949 0.1UF D 50V 80%,-20% F(Y5V) TA52 C111 0CE227DD618 220UF STD 10V M FL TP5 C514 0CE107DD618 100UF STD 10V M FL TP5 C12 0CE107DD618 100UF STD 10V M FL TP5 C517 0CN1040K949 0.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic PART NO RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION LOCA. NO PART NO DESCRIPTION C636 0CF3341L438 0.33UF D 63V 5% TP 5 M/PE NI L503 0LA0101K119 INDUCTOR,1.0UH K 2.3*3.4 TP C802 0CQZVBK002A A.C 275V 0.1UF M (S=15) L504 0LA0101K119 INDUCTOR,1.0UH K 2.3*3.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO PART NO R1231 0RD2200A609 R124 0RD2202F609 R125 DESCRIPTION CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible LOCA. NO PART NO 220 OHM 1/2 W(7.0) 5.00% TA52 R404 0RD0332A609 33 OHM 1/2 W(7.0) 5.00% TA52 22K OHM 1/6 W 5% TA52 R405 0RS1500K690 150 OHM 2 W 5% MF5.0 0RD2700A609 270 OHM 1/2 W(7.0) 5.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic LOCA. NO PART NO R606 0RD3301F609 R607 0RD1002F609 R608 RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION LOCA. NO PART NO DESCRIPTION 3.3K OHM 1/6 W 5.00% TA52 R909 0RCZVTA002D 1/2 W 1.5K,10%,PLIKOR(HIGH SURGE) 10K OHM 1/6 W 5% TA52 R910 0RCZVTA002D 1/2 W 1.
P/NO: 3854VA0146A - S1 2004.4.
SVC.
P/NO : 3828VD0178U Jun.
