LG CF-21D31KE free download

File name 019ABLK.pdf

Option Part °< IIC Bus Line 2 MNT Audio Out(Mono) TV Audio Out (CL Mono) SPK. 7 15 18 / Game Audio (From HIC01) 9 AUDIO B+ SPK. Front-AV(2) °< R.G.B AMP. & CPT DRIVE (TDA6107Q) (14/17V) IC842 5V REG °< IC651 4 LA7016(Mono Opt) TV Audio(From UOC #28) ST-BY TRANS (3W Opt) AC INPUT (110~240V) H/P TO IC631 #1,#5 °< AV-IN SMPS TRANS PJ202 25 30 MNT/TV-A(R/L)-OUT 44 °< IC631 A1/A2(R/L)-IN 1 AV STEREO °< 32 30 TDA9859 28 41 42 40 IC661 °< RF STEREO 39 DVD(R/L)-IN / Game Audio 24 MSP3410D 47 31 MONO ( ~B01L ) STEREO ( ~B01K ~ A13P) 10 SPK(L)-OUT °< IC844 8V REG H-Vcc IC131 5V REG 9.5V SPK(R/L)-OUT AM-IN (L/L Only) FM-SIF-IN °< °< °< MONO SOUND AMP TDA2006 STEREO, STEREO, Sound Max SOUND AMP. SOUND AMP. TDA7266/97 TDA7266/97 Sound Trap Part 38 IFout Int. CVBS SIF 32 °< 12 14V B+ (110/115V) AUDIO SIF 44 Audio Out SCL SDA 14 39 39 28 14 39 33 51~53 50 42 35 EXT RGB IK EXT Audio-in OUT Video-in SFE 5.74M Thai Opt. VIDEO V_DY Va Vb BLOCK DIAGRAM SW1 Va 22 Vb 21 H-out 8V From IC844 UOC TDA9361(TXT) TDA9381(Non-TXT) VERTICAL AMP LA7840 6 5 -14V SIF(CE Mono) From Tuner 2 185V 10 AFC 8 ABL SW2 IC03 EEPROM 24C08/16 5V From IC131 Audio(Mono) (TV OUT) IC02 3.3V Reg. °< 5V 3.3V EXT.RGB °< 14V 5V V-OUT Audio(Game) EXT Video 8V From IC844 5V From IC842 Video-OUT(TV/MNT OUT) A(R/L)-OUT (MNT/TV-OUT) FBT 9 HEATER 3 B+ DVD Y / Game Video Collector A1(R/L)-IN Y/Pb/Pr 1 2 EXT Video(To UOC #42) 5.1V From UOC Video(Game) 1 SDA SCL 3, 4, 5 HIC01 Game Pack(Game Opt) Rear_AV(1) ( SCART / PHONE) DVD (FLAT OPT.) IC591 ) LA7016(DVD / GameOpt) 2 4 7 HDT TUNER PJ201

File name 019ATS.pdf

TROUBLE SHOOTING NO RASTER CHECK +B at D807 cathode Normal Abnormal Is the voltage at pin61,56 & 54 of IC01 3.3V? No Is the voltage at pin3 of IC02 5V? Yes Check / Replace IC01,IC02 No Check the In/Out of IC842 No Check the voltage at D805 or D815 cathode No Check / Replace F812 Yes Is the voltage at pin14 & 39 of IC01 8V? Yes No Check &replace IC01 No Check &replace Q402 Check pin33 of IC01(H-out) Yes Check Q402 collector waveform Yes Check T402 & each pin voltage No Check &replace T402 Yes Check &replace T402 Check FUSE of AC line OK Check the voltage of C806 254~380V Check the voltage pin3 of IC803 Open Check /replace Fuse,DB801 No Check the in/out of IC844 No Check IC01 pin1 high? 0V Check /replace DB801 Check /replace IC801,IC803,IC804 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 IC01,pin50 Not OK OK Check the Heater pulse of FBT T401 Not OK Check/Replace CPT Board Components Check FBT T401 Check IC01,ZD901 IC901,P902,P541 Check FR404,FR902,P302 Check FBT T401 NO SOUND / PICTURE OK MONO Select correct system in menu OK Check the waveform at pin 44 of IC01 OK Check the waveform at pin 1 of IC601 OK Check the waveform at pin 4 of IC601 OK Check the voltage at pin 5 of IC601 NO Check/Replace FR803,D804 NO Check/Replace IC601 NO Check/Replace Q621 NO Check the waveform at pin 35 of IC501 NO Check the waveform at pin 4 of IC651 NO Check the waveform at pin 2,7 of IC651 NO Check the waveform at pin28 IC01 OK Check / Replace IC651 Check/Replace IC01 NO RF STEREO Select correct system in menu OK Check the waveform at pin 16 of TU101 OK Check the waveform at pin 24,25 of IC661 OK Check the waveform at pin 4,12 of IC602 OK Check the voltage at pin 6,7 of IC602 OK Check the waveform at pin 1,2,14,15 of IC602 OK Check the voltage at pin 3,13 of IC602 NO Check/Replace F811,D824 NO Check/Replace Q621,IC603 NO Check/Replace Q671,Q672 NO Check the voltage at pin 16,33,46 of IC661 NO Check the voltage at pin1 of IC131 NO Check/Replace IC131,IC661 NO Check / Replace TU101 NO PICTURE / NO SONUD Is any OSD displayed? No OK OK Check IC01 pin50,51,52,53 (IK,R,G,B) NO Check/ Replace IC01 Does the Auto-program operate properly. NO Store in manual-program MENU Check 5V, 33V & IIC Bus Line NO Check 5V, 33V & IIC Bus Line of TUNER OK Check / Replace IC01,TUNER OK Check CVBS singal Line & IC01 NO Is the CVBS signal OK. ( IC01 pin40 ) OK Check IK signal at IC01 pin50 (similar to CVBS) NO Check R,G,B signal at IC501 pin51,52,53 OK Check / Replace CPT Board component Go to NO SOUND / PICTURE OK OK Check receiving system in MENU & excute Auto-program. AV STEREO Select correct system in menu OK Check the waveform at pin 44 of IC01 OK Check the waveform at pin 15,18 of IC631 OK Check the waveform at pin 4,12 of IC602 OK Check the voltage at pin 6,7 of IC602 OK Check the waveform at pin 1,2,14,15 of IC602 OK Check the voltage at pin 3,13 of IC602 NO Check/Replace F

File name mc019a.pdf

P/NO:3854VA0083A-S 2001.04.20