LG CE-20J3BGX free download

File name 075A(RPL).pdf

The components identified by mark are critical for safety. Replace only with part number specified. REPLACEMENT PARTS LIST DESCRIPTION LOCA. NO D804 D805 PART NO 0DD150009CA 0DD200009AH 0DD100009AM 0DD300009AC 0DD060009AC 0DD414809ED 0DD060009AC 0DD060009AC 0DD060009AC 0DD060009AC 0DD060009AC 0DR010009AA 0DD400309AD 0DR210009AA 0DR210009AA 0DR210009AA 0DD260000BD 0DD000000BA 0DZ330009CC 0DZ560009CF 0DZ330009DF 0DZ120009AF 0DZ180009AG 0DZ820009AH 0DZ820009AH 0DZ510009AB 0DZ750009AG DESCRIPTION DIODE,RECTIFIER RGP15J DIODE,RECTIFIER RU2AMV(1) DIODE,RECTIFIER EU1ZV(1) DIODE,RECTIFIER RU3AMV(1) DIODE,TVR06J 0.6A/600V 250NS DIODE,1N4148 TA DIODE,TVR06J 0.6A/600V 250NS DIODE,TVR06J 0.6A/600V 250NS DIODE,TVR06J 0.6A/600V 250NS DIODE,TVR06J 0.6A/600V 250NS DIODE,TVR06J 0.6A/600V 250NS DIODE,RECTIFIER EG01C NON 1000V 0.5A DIODE,RECTIFIER IN4003A DIODE,RECTIFIER BAV21 DO-35 200V DIODE,RECTIFIER BAV21 DO-35 200V DIODE,RECTIFIER BAV21 DO-35 200V DIODE,BRIDGE D2SBA60 DIODE,RECTIFIER LAMP DIODE,ZENER MTZJ3.3B DO34 500MW DIODE,ZENER MTZJ5.6B DO34 0.5W DIODE,ZENER MTZJ33B DO34 0.5W 33 DIODE,ZENER MTZJ12B DO34 500MW DIODE,ZENER MTZJ18B DO34 500MW DIODE,ZENER MTZJ8.2B DO34 500MW DIODE,ZENER MTZJ8.2B DO34 500MW DIODE,ZENER MTZ5.1B,OHM DIODE,ZENER MTZJ7.5B DO34 0.5W LOCA. NO PART NO IC IC01 " IC02 IC03 IC04 IC201 IC301 IC501 " IC502 IC601 IC604 IC801 IC803 IC804 " IC805 IC843 IC844 IC845 IC901 HIC701 0ISM800316A 0ISM800317A 0IAL241610B 0IFA752700A 0ISG111733B 0IPH405300D 0IPH835150A 0IPH884212A 0IPH884112A 0ISG405200B 0ISG725300A 0ITF448800A 0ILI817000G 0ISK670713A 0ISK115000A 0ISK110000A 0IKE780500K 0IKE780500Q 0ISS780800H 0IKE780500K 0IPH610700A 0IZZVF0017A IC,LG8003-16A *W/O TEXT IC,LG8003-17A *W/ TEXT IC,AT24C16-10PC-2.7 8PIN DIP ST E IC,KA75270Z 3 TP RE-SET IC MC-007 IC,LD1117V33C 3SIP ST REGULATOR IC,HEF4053BP 16P DIP BK ANALOG MU IC,TDA8351/N6 9P,SIP BK V/OUT(W/O IC,TDA8842(S1)/N2 56P,SDIP BK MUL IC,TDA8841(S1)/N2 56P,SDIP BK IC,HCF4052BE 16P,DIP BK DIFF-4CH IC,TDA7253 11P,SIP BK 8W AUDIO AM IC,U4488B 16DIP BK SIF+AM DEMODUL IC,LTV817M-VB 4P,DIP BK PHOTO COU IC,STR-F6707(LF1352) 5P,SIP BK ST IC,SE115N(LF12) 3P 115V ERROR AMP IC,SE110N(LF12) 3P 110V ERROR AMP IC,KIA7805PI 3P(TO-220IS) 5V,1A IC,KIA7805API 3P(TO-220 IC,KA78R08 4P,TO-220F BK LOW DROP IC,KIA7805PI 3P(TO-220IS) 5V,1A IC,TDA6107Q SIP9 BK VIDEO OUT AMP IC,GAME MODULE 7 BK D806 D807 D808 D810 D827 D828 D829 D830 D831 D840 D901 D902 D903 D904 DB801 LD01 ZD01 ZD101 ZD102 ZD231 ZD501 ZD741 DIODE D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D101 D111 D112 D301 D402 D403 D505 D506 D507 D509 D510 D741 D742 D743 D744 D801 D802 D803 0DD414809ED 0DD414809ED 0DD414809ED 0DD414809ED 0DD414809ED 0DD414809ED 0DD414809ED 0DD414809ED 0DD859009AA 0DD414809ED 0DD414809ED 0DD859009AA 0DD859009AA 0DD414809ED 0DD150009CA 0DD414809ED 0DD414809ED 0DD414809ED 0DD414809ED 0DD859009AA 0DD859009AA 0DD060009AC 0DD200009AH 0DD060009AC 0DD414809ED 0DR200000DA 0DD100009AM 0DD414809ED DIODE,1N4148 TA DIODE,1N4148 TA DIODE,1N4148 T

File name 075Aadj.pdf

ADJUSTMENT Ў 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. But this is changeable in view of productivity. 5. Unless otherwise noted, set the line voltage to 230VacЎ 10%, 50/60Hz. Model System Tuner P/N Marker AGC Voltage CEPAL/SECAM-B/G,D/K.I 6700VPF005B LGEC 2.5Ў 0.1V CLPAL/SECAM-B/G,LL' 6700VPF005A LGEC 2.5Ў 0.1V Ў Screen Voltage Adjustment Test Point Adjust : RK (Red Cathode of CPT Board) : Screen Control of FBT Ў Test Equipment required 1. Multimeter (volt meter) 2. Oscilloscope Ў RF AGC (Automatic Gain Control) Adjustment Test Point Adjust : AGC TP (J05) : Remote Control 1) Tune the TV set to receive a digital pattern. 2) Press PSM (RED) button on remote controller. (standard picture) 3) Connect the probe of oscilloscope to the RK (Red Cathode) of CPT Board. 4) Adjust Screen Volume of FBT so that the waveform is the same as below figure. Horizontal FlyBack Time The RF AGC was aligned at the time of manufacture for optimum performance over a wide range conditions. Readjustment of RF AGC should not be necessary unless unusual local conditions exist, such as ; 1) Channel interference in a CATV system. 2) Picture bending and/or color beats, which are unusually due to excessive RF signal input when the receiver is too close to a transmitting tower or when the receiver is connected to an antenna distribution system where the RF signal has been amplified. In this case, the input signal should be attenuated (with pad or filter) to a satisfactory level. 3) Picture noise caused by "broadcast noise" or weak signal. If the broadcast is "clean" and the RF signal is at least 1mV (60dBu), the picture will be noise free in any area. Adjusting RF AGC to one end of rotation will usually cause a relatively poor signal to noise ratio; Adjusting to the other end of rotation will usually cause a degradation of over load capabilities resulting in color beats or adjacent channel interference. Black level 160Vp-p 1H-LINE White level GND for dc The waveform of RK(Red Cathode) of CPT Board Ў Focus Adjustment NOTE: This adjustment should be performed after warming up for 10 minutes. Test Point Adjust : Observing Display : Focus control of FBT Adjustment 1. Connect RF signal (65dBЎ 1dB) and turn on the TV. Ў Standard adjustment Channel - EU 05 Ch. (frf = 175.25MHz) : CK, CL, CB - EU 41 Ch. (frf = 631.25MHz) : CI 2. Press OK buttons on TV set and Remote Controller at the same time to get into SVC-0 mode. 3. Press Channel UP/DOWN button on the Remote Controller several times to find AGC??. 4. Press Volume UP/DOWN button until the AGC Voltage is the same as the Table below. 5. Press OK(ЎЖ button to memorize the data. ) 1) Tune the TV set to receive

File name 075ablk.pdf

LOCAL Key ASSY Pre Amp AC-IN 230V ST-5V ST_BY(2W) POWER (OPTION) IC601 TDA7253 Audio AMP IC02 EEPROM 24C16 SCL SDA IC01 TV /TXT SDA5555 /5521 SCL SDA CVBS(TXT) IR B+ Sound B+ 8V TXT RGB 8VREG STRF6707 BLOCK DIAGRAM 5V IC901 CPT DRIVE AMP. TDA6107Q RGB IC501 TDA8842 VIDEO PROCESSOR VB VA H-OUT 5V REG 35V H.Vcc /TUNER CVBS IK BPF TPS VA VB IC301 TDA8351Q VERTICAL AMP V-DY IC502 CD4052 K3953M(BG/DK/I) K6263K(W/M) IF1 5V 33V IF2 SAW I 16V H-DY FM AM 45V TUNER SCL SDA K9260M(BG/DK/I) K9253M(W/M) SAW II L9654M(L/L ) L/L S/W SAW III IC201 CD4053 SW SOUND BOARD VIF/SIF U4488B SCART/PHONE A2-OUT Q401 D2499 FBT H-OUT B+ HV SCREEN H/T AGC *OPTION 180V

File name 075Atro.pdf

TROUBLESHOOTING NO RASTER CHECK +B at D807 cathode Normal Abnormal Is the voltage at pin37 & 12 of IC501 8V? Yes No Check &replace IC501 No Check T401 & each pin voltage Check pin40 of IC501(H-out) Yes Check Q402 collector waveform Check FUSE of AC line No Check the in/out of IC844 No 254~380V Check u-COM pin28 low? No Check /replace Q807 Check the voltage at pin4 of IC804 OK Check the voltage of C806 Open Check /replace Fuse,DB801,IC803 0V Check /replace DB801,R811 Check /replace D806,IC804,R809,R810 NO TELETEXT Check CVBS signal at IC01 pin12 OK Check IC01 & IICBus Line Not OK Check / Replace Q10 & IC501 - 16 - NO SOUND / PICTURE OK Check the voltage of SMPS 25V at pin9 of IC601 Abnormal Normal(20~25V) Check/Replace of FR803 & D804 Check the voltage swing of pin2 of IC501 Check demodulated signal of pin15 of IC501 Check/Replace IC501 Check demodulated of input pin of IC601 Check/Replace IC01 Check/Replace IC601 NO RASTER / SOUND OK Check the Heater voltage of CPT (6 6.5Vrms) OK Not OK Check HV, Screen voltage of CPT Not OK OK Check Ik Current of IC501, pin18 Not OK OK Check the Heater pulse of FBT T701 Not OK Check/Replace CPT Board Components Check FR704, FR901 P902A & P902B Check FBT T701 Check FBT T701 Check IC501, ZD904 P901A & P901B - 17 - NO PICTURE / NO SONUD Is any OSD displayed? No Yes OK Check IC01 pin38,39,40 (R,G,B) Not OK Check IC01 pin19,20 (V-Sync, H-Sync) Check IC01 pin36,37 (XLC, EXLC) & IC01 Check 5V, 33V & IIC Bus Line Not OK Does the Auto-program operate properly. Not OK Store in manual-program MENU Check 5V, 33V & IIC Bus Line of TUNER OK Check / Replace TUNER, IC501 Not OK Is the CVBS signal OK. ( IC501 pin6 ) OK Check CVBS singal Line & IC501 Not OK Check R,G,B signal at IC501 pin19,20,21 OK Check / Replace CPT Board component Go to NO SOUND / PICTURE OK Yes Check receiving system in MENU & excute Auto-program. - 18 -

File name 075a_20pcb.pdf

PRINTED CIRCUIT BOARD MAIN & CPT S/W CTL

File name 075A_EV.pdf

EXPLODED VIEW PARTS LIST LOCA. NO PART NO DESCRIPTIONS The components identified by mark critical for safety. Replace only with part number specified. is 112 112-C20S 2055-V1221J CPT SET,A48ECR141X(S/S, DARK W/ITC LGE CPT ,A48QAD220X 03S7ND *LGEAP SPEAKER,GENERAL C091P06K145B COIL,DEGAUSSING,CU 20" 60T 15OH DY,DCAM1-20PLAA LEAD SET,CPT EARTH CABINET ASSY(RED) CABINET ASSY(BLUE) CABINET ASSY(GREEN) BUTTON,CONTROL(RED) BUTTON,CONTROL(BLUE) BUTTON,CONTROL(GREEN) SPRING,KNOB BUTTON,POWER(RED) BUTTON,POWER(BLUE) BUTTON,POWER(GREEN) BACK COVER ASSY(RED,SCART) BACK COVER ASSY(BLUE,SCART) BACK COVER ASSY(BLUE,AV JACK) BACK COVER ASSY(GREEN,SCART) BACK COVER,MIDDLE(RED) BACK COVER,MIDDLE(BLUE) BACK COVER,MIDDLE(GREEN) PWB ASSY,MAIN MC009A BG/DK/I PWB ASSY,MAIN MC009A BG/DK/I+GAME PWB ASSY,MAIN MC009A BG/L+GAME PWB ASSY,MAIN MC009A BG(W/O GAME) PWB ASSY,S/W MC009A BD/DK/I PWB ASSY,S/W MC009A BD/L+GAME PWB ASSY,S/W MC009A BG(W/O GAME) PWB ASSY,CTL MC009A PWB ASSY,CTL MC009A SCREW ASSY,HEXAGON HEAD SCREW,TAP TITE D4.0 L16.0 CORD,POWER(W/HOLD,HOUSING,L=200,4.0 CORD,POWER ASSY L=2200MM 120 150 153 170 300 120-C93J 150-D02M 153-276A 170-A01D 3091V00215F 3091V00215N 3091V00215P 310 5020V00342D 5020V00342C 5020V00342E 320 330 320-062D 5020V00341D 5020V00341C 5020V00341E 400 3809V00159E 3809V00159K 3809V00159H 3809V00159J 503 3808V00148C 3808V00148B 3808V00148D 520 6871VMM442A 6871VMM442B 6871VMM442C 6871VMM407D 530 6871VSM618A 6871VSM618C 6871VSM523D 540 6871VSM619A 6871VSM451A 913 943 P801 332-057B 1PTF0403116 174-009E 174-222P - 21 -

File name mc009a_plt.pdf

Service Sheet of MC-009A P/N : 3854VA0069A-S(1/2) DATE : 2000.3.21 Video C Audio Waveform