website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MC-007A MODEL:CT-25/29Q47E/P/EN/EX MODEL:CT-25/29Q46EN CF-29F84 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS Contents ................................................................................................................. 2 Safety Precautions ............................................................................................3 Specifications ..................................................................................................... 4 Control Descriptions ........................................................................................ 5 Disassembly 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.
SPECIFICATIONS Note : Specification and others are subject to change without notice for improvement. SOUND IF : ¡ Video input system: PAL-B/G, D/K, I/I SECAM-B/G, D/K/L/L’ NTSC M NTSC 4.43(AV) ¡ Intermediate Frequency (Unit : MHz) VISION IF : 38.9MHz,33.9MHz(SECAM-L’) COLOR IF : 34.47MHz(4.43) 35.32MHz(3.58) : NTSC-M VIF-4.25000MHz ( ): SECAM VIF-4.40625MHz 33.4MHz (B/G) 32.9MHz (I/I) 32.4MHz (D/K,L) 34.4MHz (M) 40.
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 10 ARC 2 Remote control handset MUTE 1 1 2 3 4 5 6 TV/AV Before you use the remote control handset, please install the bat11 teries. See the next page. 12 SOUND 7 8 9 MENU PICTURE 13 2. NUMBER BUTTONS switches the set on from standby or directly select a number. 0 3 TURBO PR VOL 4 OK 1.
14. LIST displays the programme table. 15. I/II selects the language during dual language broadcast (option). selects the sound output. 16. PIP BUTTONS (option) PIP switches the sub picture on or off. PR +/selects a programme for the sub picture. SWAP alternates between main and sub picture. INPUT selects the input mode for the sub picture. SIZE adjusts the sub picture size. STILL freezes motion of the sub picture. POSITION relocates the sub picture in clockwise direction.
1 3 4 2 6 5 1. MAIN POWER 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. 8 3. MENU selects a menu. 4. OK accepts your selection or displays the current mode. AV2 VIDEO F / G (Volume Up/Down) adjusts the volume. adjusts menu settings. 7 / E (Programme Up/Down) selects a programme or a menu item. switches the set on from standby. L MONO AUDIO D R 5.
DISASSEMBLY INSTRUCTIONS Important note Chassis Assy Removal This set is disconnected from the power supply through the converter transformer. An isolating transformer is necessary for service operations on the primary side of the converter transformer. Grasp both side of Frame and pull it backward smoothly. Back Cabinet Removal Remove the screws residing on the back cabinet and carefully separate the back cabinet from the front cabinet. (Fig. 2-1). Speaker Assy Removal 1.
ADJUSTMENT INSTRUCTIONS ¡ Safety Precautions 1. It is safe to adjust after using insulating transformer between the power supply line and chassis input to prevent the risk of electric shock and protect the instrument. 2. Never disconnect leads while the TV receiver is on. 3. Don't short any portion of circuits while power is on. 4. The adjustment must be done by the correct appliances. 5. Unless otherwise noted, set the line voltage to 230Vac¡ 10%, 50Hz. 5.
EP (East west Parabolar) Adjust so that middle portion of the outermost left and right vertical line looks like parallel with vertical lines of the CPT. A B EC (East-west Coner) Adjust so that the vertical line at every 4 corners of the screen looks like parallel with the vertical lines of the CPT. ET (East-west Trapezium) Adjust to make the length of top horizontal line same with it of the bottom horizontal line. Fig.
Menu Range DATA CR 0 ~ 511 50 CG 0 ~ 511 50 CB 0 ~ 511 50 RG 0 ~ 511 370 GG 0 ~ 511 370 BG 0 ~ 511 370 (Table 3) ¡ SVC Data & PSM,SSM Data. Table 1. ABL Data (LINE SVC-3) Menu Range 29Ó Flat IBRM 0~1FFH 00C8 WDRM 0~3FFH 0190 BCLTH 0~7FFH 0065 BCLTM 0~1FFH 000B BCLGA 0~1FFH 0007 29Ó S-Flat DVCO SVGA 0008 SVDEL 0005 SVD1 0003 LDLY 0001 HBST 0~01FF 00F0 HBSO 0~01FF 0158 Table 2.
¡ OPTION Adjustment (LINE-SERVICE OPTION) Table 4. OPTION Function Menu Option 1 OPTION 1 0 GAME GAME X TEXT TEXT X TOP TOP X Australia Only ACMS CH+AU China,Australia EYE EYE X TURBO Turbo Search X SCART SCART X A2 ST STEREO X I II SV I/II X MONO MONO X VOL Middle East Africa,India VOL. Normal VOL.
MEMO - 13 -
EXPLODED VIEW 943 400 913 150 153 510 170 112 P801 540 550 530 520 501 300 560 120 570 310 600 121 330 320 700 - 14 -
EXPLODED VIEW PARTS LIST Replace only with part number specified. Part No. No.
The components identified by mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO REPLACEMENT PARTS LIST DESCRIPTION IC D850 0ISK100300A IC,SLA1003 SIP12 BK DIODE MODULE( HIC181 0IZZVF0016A IC TILT 7P,SIP BK . IC01 0ICTMIH001B IC,SDA5555-A030 INFINEON 52SDIP S ICV01 0IIT312000A IC,VDP3120B 64P SDIP BK VCD IC (5 ICN01 0IIT341000J IC,MSP3410D-C5 52P SDIP BK MULTI ICP01 0IIT312000A IC,VDP3120B 64P SDIP BK IC02 0IAL241610B IC,AT24C16-10PC-2.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO ZD901 CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic PART NO 0DZ180009BE RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION DIODE,ZENER GDZJ18B TRANSISTOR The components identified by mark are critical for safety. Replace only with part number specified. LOCA.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; The components identified by mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION 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 C109 0CE335DK618 3.3UF STD 50V 20% FL TP 5 C311 0CQ1031N509 0.01U 100V K POLY C110 0CN1040K949 0.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; The components identified by mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA.
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 The components identified by mark are critical for safety. Replace only with part number specified. DESCRIPTION LOCA. NO PART NO DESCRIPTION LP04 0LA0102K119 INDUCTOR,10UH K 2.3*3.4 TP R01 0RD3301F609 3.3K OHM 1/6 W 5.00% TA52 LP05 0LA0471K119 INDUCTOR,4.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; The components identified by mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION R66 0RD1000F609 100 OHM 1/6 W 5.00% TA52 R224 0RD0682F609 68 OHM 1/6 W 5.00% TA52 R67 0RD4701F609 4.7K OHM 1/6 W 5.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; LOCA. NO PART NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION The components identified by mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION R601 0RD0472F609 47 OHM 1/6 W 5.00% TA52 R923 0RD1001F609 1K OHM 1/6 W 5.00% TA52 R602 0RD2701F609 2.7K OHM 1/6 W 5.
For Capacitor & Resistors, the charactors at 2nd and 3rd digit in the P/No. means as follows; The components identified by mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO CC, CX, CK, CN : Ceramic CQ : Polyestor CE : Electrolytic RD : Carbon Film RS : Metal Oxide Film RN : Metal Film RF : Fusible DESCRIPTION R1204 0RD2403F609 240K OHM 1/6 W 5.00% TA52 R1205 0RD2403F609 240K OHM 1/6 W 5.00% TA52 R1401 0RS0221H609 2.
Video Audio C P/No : 3854VA0071A-S1 2000.06.
WIRING DIAGRAM BLOCK DIAGRAM CABINET H/P SPEAKER CONNECTOR R D-COIL PREAMP. S-Video IN AV3-IN TILT HIC181 L EYE SENSOR LOCAL KEY 3.3 V REG IC04 IR V3 28 S-VIDEO SEL. Y/V3 C SDA SCL 9V P502A. 41/42/43/44 TXT RGB 3 SCL PP803 P05B PIP IC SDA9489 SDA0 SCL0 P602 P03A P05A ICP(V)01. PIP or VCD BOARD A/V S/W CXA2040Q V_DY P801 EXT. RGB P01 V2(MNT) OUT ICP(V)01. P901. SOUND BOARD ICN02 TDA2822M P181 14V KIA4558 HP Amp.
SVC. SHEET:3854VA0071A-S1 SVC.
P/NO : 3828VD0077Z Apr.