LG 42PC1DA Series, Service Manual

Page 1: ...V SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS PD61A MODEL 42PC1DA 42PC1DA EC website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ... 3 DESCRIPTION OF CONTROLS 4 SPECIFICATIONS 10 ADJUSTMENT INSTRUCTIONS 12 TROUBLE SHOOTING GUIDE 17 PRINTED CIRCUIT DIAGRAM 22 BLOCK DIAGRAM 26 EXPLODED VIEW 28 EXPLODED VIEW PARTS LIST 29 REPLACEMENT PARTS LIST 30 SCHEMATIC DIAGRAM ...

Page 3: ...ck With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the meas...

Page 4: ...other operating modes for the remote to oper ate external devices GUIDE Shows programme schedule ARC Aspect Ratio Control Selects your desired picture format SUBTITLE Recalls your preferred subtitle in digital mode PIP Switches the sub picture on or off select PIP DW1 2 or POP modes SIZE Adjusts the sub picture size POSITION Moves the sub picture position PIP PR Selects a programme for the sub pic...

Page 5: ...IST Displays the programme table Q VIEW Returns to the previously viewed programme NUMBER BUTTONS MUTE Switches the sound on or off FAV FAVOURITE Displays the selected favourite programmes D A TV INPUT VOL LIST Q VIEW PR POWER 1 2 3 4 5 6 7 8 0 9 INDEX POSITION SIZE REVEAL I II TIME GUIDE PIP PR PIP MENU MUTE FAV EXIT VCR TV DVD ARC TEXT SWAP BACK PIP PR INFO i i OK SUBTITLE PIPINPUT SLEEP EXIT Cl...

Page 6: ...MENU INPUT PROGRAMME Buttons VOLUME Buttons MENU Button OK Button INPUT Button POWER Button Power Standby Indicator illuminates red in standby mode illuminates white when the set is switched on Front Panel Controls ...

Page 7: ...1 AV 2 DTV OUT ANTENNA IN ANTENNA OUT Eject Pcmcia card slot AUDIO Input VIDEO Input DIGITAL AUDIO OUT OPTICAL AV IN 3 VARIABLE AUDIO OUT AV 1 2 DTV OUT COMPONENT IN HDMI DVI IN 42PC1DV 42PC1DVA models have a unit of HDMI DVI input jack ANTENNA IN ANTENNA OUT AUDIO IN RGB DVI RGB IN PC DTV AC IN RS 232C INPUT CONTROL SERVICE REMOTE CONTROL Port PCMCIA Personal Computer Memory Card International As...

Page 8: ...UB TITL E PIP INPU T SLE EP D A V O L LI ST Q V IE W P R 1 2 3 4 5 6 7 8 0 9 IN DE X PO SIT IO N SI ZE RE VE AL I I I TI M E GU IDE PIP PR PIP ME NU MU TE FA V EX IT TV AR C TE XT SW AP BA CK PIP PR INF O i i OK SLE EP V O L LI ST Q V IE W 1 2 3 4 5 6 7 8 0 9 I PO SIT IO N SI ZE TI M E MU TE FA V Remote Control Batteries 2 Wall brackets 2 eye bolts For 42PC1D DV DVA 42PC3D DV 50PC1D Polishing Clot...

Page 9: ...outward O Place the set with the screen facing down on a cushion or soft cloth as shown in Figures 1 Before unfolding the stand please make sure two locks A on the bottom of the stand push outward O Pull the stand out as shown above in Figures 2 3 After unfolding the stand please insert and tighten the screws in the holes B on the bottom of the stand O When connecting cables to the set Do not dise...

Page 10: ... operated for about 20 minutes prior to the adjustment V Test Method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC V General Specification 1 Module Specification 10 Display Screen Device Aspect Ratio PDP Module Operating Environment Storage Environment Input Voltage 1 2 3 4 5 6 No Item Specification Remark 42 Wide Color Display Modu...

Page 11: ...EA Wired Control 1 2 3 4 5 6 7 8 9 10 11 No Item Specification Remark The United Kingdom 1 PAL BG 2 PAL DK 3 PAL I I 4 DVB T ID TV 5 SECAM L Analog Upper Heterodyne Digital COFDM PAL SECAM PAL SECAM NTSC PAL SECAM NTSC Y Cb Cr Y Pb Pr RGB PC RGB DTV HDMI PC HDMI DTV SOUND PC Audio Component AV 2EA Discrete I UK 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 L R Input ...

Page 12: ...n cross hatch pattern after image may be occur in the black level part of the screen 3 Channel memory 3 1 Setting up the LGIDS 1 Install the LGIDS idsinst exe 2 After installation restart your PC 3 Extract files zip to folder c LGIDS files 4 Start LGIDS 3 2 Channel memory Method 1 Select PDP and Hurricane on Model dialog And check your connection in Communication dialog If your connection is NG th...

Page 13: ... terminal of D M M to Va pin of P812 connect terminal to GND pin of P812 3 After turning VR901 voltage of D M M adjustment as same as Va voltage which on label of panel right top Deviation 0 5V 2 Vs Adjustment 1 Connect terminal of D M M to Vs pin of P812 connect terminal to GND pin of P812 2 After turning VR951 voltage of D M M adjustment as same as Va voltage which on label of panel right top De...

Page 14: ...ke MSPG 925 2 If minimum Black level and or maximum White level is not correct select 100 color bar pattern 8 2 Required Equipment 1 Remote controller for adjustment 2 AV Pattern Generator 802F Pattern Generator Master MSPG 925FA etc Which has PAL Composite Video format output with standard 1 0 Vpp Vertical 100 Color Bar Pattern as Fig7 8 3 Method of Auto AV CVBS Color Balance 1 Input the PAL Comp...

Page 15: ...uence is reversed Black White reverse the pattern with REV key when using Master pattern generator like MSPG 925 V If Minimum Black Level and or Maximum White Level is not correct select 100 Color Bar Pattern 10 2 Required Test Equipment 1 Remote controller for adjustment 2 802F Pattern Generator Which has 720p Ypbpr output with Standard 0 7Vpp Vertical 100 Color Bar Pattern as Fig 10 10 3 Method ...

Page 16: ...mmand Set Description FOS Default write 7mode data write Vtotal V_Frequency Sync_Polarity Htotal Hstart Vstart 0 Phase Data write Model Name and Serial Number write in EEPROM 13 3 Mathod Notice 1 Serial nember D L is using of scan equipment 2 Setting of scan equipment operated by Manufacturing Technology Group 3 Serial number D L must be conformed when it is produced in production line because ser...

Page 17: ...Doesn t the high tension output come out Doesn t the VSC signal Vs ON come out Yes Yes Does high tension output voltage Drop occur When the Y B D Module input connector is removed does output voltage drop occur When the Y Z B D Module input connector is remove does Power Board hightension output voltage Drop occur Yes No No 9 Check the Power Board Output high tension circuit Yes 10 Check the Z B D...

Page 18: ... 18 1 2 42 Power Board Structure T801 Vs Trans T901 Va Trans T112 Low Voltage Trans T501 ST BY Trans T601 PFC Inductor ...

Page 19: ...rge continuously becomes accomplished from the module 2 Check follow Is the LVDS cable normal Is the VSC Board normal Is the LVDS cable connected well Cable inserts well Yes No No Yes Does the FIL8532 IC IC800 Operates Replace FIL8532 IC IC800 No Is the Ctrl Board of Module normal Replace Ctrl B D No No Yes Replace VSC B D Replace the cable Yes ...

Page 20: ... Is the Tuner Cable connected well Cable inserts well Yes No No Yes Is the FIL8532 IC800 normal Replace the Tuner No Is the Input voltage IIC Communication and CVBS output normal Yes Is the Input voltage IIC Communication and HV sync normal No Replace the IC No Is normal the Input voltage IIC Communication and HV sync No Replace the IC No Is the CXA2069Q normal Yes Is the FIL8532 normal Is the Inp...

Page 21: ...e inserts well No No Is connected the Flat cable correctly Cable inserts well No Replace IC404 Replace SPK cable Yes Yes Yes Is the RF AV Component RGB HDMI sound normal No Is the MSP4410K IC404 normal Replace IC403 Yes Is the NSP6241 IC403 normal Replace IC405 Yes Is the TAS5122 IC405 normal Replace IC800 Yes Yes No No No No Is the FLI8532 IC404 normal Replace VSC B D ...

Page 22: ... 22 PRINTED CIRCUIT BOARD MAIN TOP ...

Page 23: ... 23 MAIN BOTTOM ...

Page 24: ... 24 AV TOP AV BOTTOM ...

Page 25: ... 25 CONTROL PRE AMP SIDE A V ...

Page 26: ... Disp_En SCL SDA V_out1 Y_in1 V or Y C Sub L_SPK_out I2S I2S I2C For DDC_RGB For DDC_HDMI I2C RGB PC DTV HDMI PC DTV RS232 R C OUT Scart1 Scart2 DTV OUT AV S AV PC_ Audio TV_out CVBS L R AVin1 CVBS L R Scart_ID DTV_out CVBS L R CI SLOT STi5100 Tuner 4M BYTE FRESH MEMORY HY5DU561622D DDRRAM 256MB T S 7 SYNC CK VALID 74LVC541 74LVC 541 74LVC 245 CVBS 27MHZ CRYSTAL YCbCr 656 Format _8bit DIGITAL ANAL...

Page 27: ...MEMO 27 ...

Page 28: ... 28 EXPLODED VIEW 600 602 601 121 120 570 203 204 206 200 580 205 201 202 400 240 250 430 530 501 301 304 303 302 560 502 520 300 ...

Page 29: ...ter ASSY AL FILTER BOTT 42PC1 LGEMA 303 4980900369A Supporter ASSY AL ASSY AL FILTER RIGHT 42PC1 LGEMA 304 4980900370A Supporter ASSY AL ASSY AL FILTER LEFT 42PC1 LGEMA 400 MCK30275902 Cover PRESS PCM 0 4 42PC1RR ZL AL NON 430 3501900014E Base Assembly D T SPK STAND AP 42DC11 MF056A FOLDING STAND SKD PHATOM 501 3301900095H Plate Assembly AV 42PC I DTV 502 3301900092M Plate Assembly ASSY DIGITAL CO...

Page 30: ...00AA 0TR387500AA 0TR150400BA 0TR387500AA 0TR150400BA 0TR387500AA 0TR387500AA 74LVC541APW 1 2TO3 6V 0 01mA BUFFER LINE MC33078DR2G 5TO 18V 2mV 0 002 ICL3232CBNZ 3VTO5500MV SSOP TC74LCX157FT 2TO3 6V 0 01mA TC74LCX157FT 2TO3 6V 0 01mA TC74LCX157FT 2TO3 6V 0 01mA KA7809R 11 5TO24V 9V 150W DPAK R TP 3P KIA78R05F 6TO12V 5V 8W DPAK R TP 5P 24LC32AT I SNG 32KBIT 4KX8BIT SST25VF040 20 4C S2AE 4MBIT 512KX8B...

Page 31: ... 4NSEC LOCA NO PART NO DESCRIPTION D1106 D1107 D111 D1110 D1200 D201 D2500 D300 D401 D500 D501 D502 D503 D504 D505 D506 D507 D508 D600 D601 D607 ZD100 ZD301 ZD302 C100 C100 C1000 C1001 C1002 C1003 C1004 C1005 C1006 C1007 C1008 C1009 C101 C101 C1011 C1013 C1014 C1015 C1017 C1018 C1019 C102 C102 C1029 C103 C103 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DD184009AA 0DS113379BA 0DD184009AA 0DS22...

Page 32: ...16MA LOCA NO PART NO DESCRIPTION C1080 C1081 C1082 C1083 C1084 C1085 C1086 C1087 C1088 C1089 C109 C109 C1090 C1091 C1092 C1093 C1094 C1095 C1096 C1097 C1098 C1099 C110 C110 C1100 C1101 C1102 C1103 C1104 C1105 C1106 C1107 C1108 C1109 C111 C111 C1110 C1111 C1111 C1112 C1113 C1114 C1115 C1116 C112 C112 C1125 C1126 C1129 C113 C113 C1130 0CK103CK56A 0CK103CK56A 0CE476WF6DC 0CE476WF6DC 0CE476WF6DC 0CE47...

Page 33: ...K500CT 10000p 10 50V X7R LOCA NO PART NO DESCRIPTION C1184 C1185 C1186 C1187 C1188 C1189 C119 C119 C1190 C1191 C1192 C1193 C1194 C1197 C1198 C1199 C120 C120 C1200 C1201 C1205 C1206 C1207 C1208 C121 C121 C1210 C1217 C1218 C1219 C122 C1220 C1221 C1222 C1223 C1224 C1225 C123 C1230 C1231 C1236 C1237 C1238 C1239 C124 C1240 C1241 C1242 C1243 C1244 C1245 C1246 0CK103CK56A 0CE476WF6DC 0CE476WF6DC 0CE476WF...

Page 34: ...CA NO PART NO DESCRIPTION C143 C1430 C1430 C1431 C1431 C1432 C1432 C1433 C1433 C1434 C1435 C1439 C1439 C144 C144 C1440 C1440 C1441 C1441 C1442 C1442 C145 C145 C146 C147 C148 C149 C150 C150 C1503 C1506 C1507 C1508 C1509 C1509 C151 C1510 C1510 C1511 C1512 C1513 C1514 C152 C152 C1521 C1523 C1525 C153 C153 C154 C154 C155 0CK104CK56A 0CE227WJ6DC 0CK104CK56A 0CE227WJ6DC 0CK104CK56A 0CE227WJ6DC 0CK104CK5...

Page 35: ...0603B103K500CT 10000p 10 50V X7R LOCA NO PART NO DESCRIPTION C188 C189 C190 C191 C192 C193 C193 C194 C194 C195 C196 C197 C198 C199 C200 C201 C201 C202 C203 C203 C204 C204 C205 C205 C206 C206 C207 C207 C208 C208 C209 C210 C210 C211 C211 C212 C212 C213 C213 C213 C214 C214 C215 C215 C216 C216 C217 C217 C218 C218 C219 C219 0CK103CK56A 0CK103CK56A 0CK103CK56A 0CK822CK46A 0CK822CK46A 0CC220CK41A 0CC300C...

Page 36: ...ART NO DESCRIPTION C2534 C2535 C2536 C2537 C2538 C2539 C2540 C2541 C2542 C2543 C2544 C2545 C2546 C2547 C2548 C2549 C2550 C2551 C2552 C2553 C2554 C2555 C2556 C2557 C2558 C2559 C2560 C2561 C2562 C2563 C2564 C2565 C2566 C2567 C2568 C2569 C2570 C2571 C2572 C2573 C2574 C2575 C2579 C290 C300 C300 C301 C301 C302 C302 C303 C303 0CK102CK56A 0CK103CK56A 0CK103CK56A 0CK102CK56A 0CK104CK56A 0CK102CK56A 0CK104...

Page 37: ...50CT 470000p 20TO 80 25V LOCA NO PART NO DESCRIPTION C334 C335 C336 C337 C337 C338 C338 C339 C341 C341 C342 C343 C344 C344 C345 C346 C347 C348 C349 C350 C351 C352 C353 C354 C355 C361 C363 C364 C373 C374 C375 C401 C401 C402 C402 C403 C403 C404 C404 C404 C405 C405 C406 C406 C407 C408 C409 C409 C409 C410 C410 C411 0CK474CH94A 0CK225DFK4A 0CK474CH94A 0CE106WFKDC 0CK474CH94A 0CK104CF56A 0CK225DFK4A 0CK...

Page 38: ...OCA NO PART NO DESCRIPTION C466 C467 C468 C469 C470 C471 C473 C474 C475 C476 C477 C478 C479 C482 C483 C485 C486 C487 C488 C489 C490 C491 C492 C494 C495 C496 C497 C498 C499 C500 C501 C502 C502 C503 C503 C504 C505 C505 C506 C507 C507 C508 C509 C510 C511 C511 C512 C512 C513 C513 C514 C514 0CK105DF64A 0CE475WK6DC 0CE475WK6DC 0CE475WK6DC 0CK682CK51A 0CK104CK56A 0CK104CK56A 0CK682CK51A 0CK104CK56A 0CK10...

Page 39: ... 100u 20 25V LOCA NO PART NO DESCRIPTION C607 C608 C609 C609 C610 C610 C611 C612 C612 C613 C614 C614 C615 C615 C616 C617 C618 C618 C619 C619 C620 C620 C621 C621 C622 C622 C623 C623 C624 C624 C625 C625 C626 C627 C627 C628 C628 C629 C630 C631 C631 C633 C634 C636 C637 C639 C641 C644 C645 C647 C650 C651 0CK104CK56A 0CE227SF6DC 0CE227SF6DC 0CK104CK56A 0CE107WF6DC 0CE227SF6DC 0CK104CK56A 0CE107VH6DC 0CK...

Page 40: ...LOCA NO PART NO DESCRIPTION C752 C753 C754 C755 C756 C757 C758 C759 C760 C761 C762 C763 C764 C765 C766 C767 C768 C769 C770 C771 C772 C773 C774 C775 C776 C800 C803 C805 C810 C811 C812 C813 C814 C815 C816 C817 C818 C819 C820 C821 C822 C823 C824 C825 C826 C828 C829 C830 C831 C832 C833 C834 0CE226WF6DC 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CE226WF6DC 0CK1...

Page 41: ...50V X7R LOCA NO PART NO DESCRIPTION C887 C888 C889 C890 C891 C892 C893 C894 C895 C896 C897 C898 C899 C900 C901 C902 C903 C904 C905 C906 C907 C908 C909 C910 C911 C912 C913 C914 C915 C916 C917 C918 C919 C920 C921 C922 C923 C924 C925 C926 C927 C928 C929 C930 C931 C932 C933 C934 C935 C936 C937 C938 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK...

Page 42: ...C12 C13 C14 CN401 JK500 JK601 P1301 P1302 P1303 P501 P502 P503 AR100 AR101 AR102 AR103 AR104 AR105 AR106 AR107 AR108 AR109 AR110 AR111 AR1206 AR1207 AR1401 AR1402 AR1403 AR1404 AR1405 AR1406 AR248 AR249 AR250 AR2500 AR2501 AR2502 AR2503 AR2504 6631900027C 6631900050C 6631900065B 6631900093A 6631900097A 6631900098A 6631900099A 6631900100A 6631900104C 6631900105A 6631T20033J 6631T39004D 6631V39013N ...

Page 43: ...L100 L100 L1001 L1002 L1003 L1004 L1005 L1006 L1008 L101 L101 L1010 L1011 L1012 L1013 L1014 L1015 L1016 L1017 L1018 L1019 L102 L1020 L1021 L1022 L1023 L1024 L1025 L1026 L1028 L104 6600VR1004A 140 313B 140 313B 140 313B 140 313B 140 313B 140 313B 140 313B 140 313B 6600VR1004A 6600VR1004A 6210TCE002B 6210TCE002B 6210TCE002B 6210TCE002B 6210TCE002B 6210TCE002B 6210TCE001G 6210VC0006A 6210VC0006A 6210...

Page 44: ...BMH3216 HM501NT 500OHM 3 2X1 6X1 6mM FBMH3216 HM501NT 500OHM 3 2X1 6X1 6mM MLB 201209 1000L N2 1000OHM 2X1 2X0 9MM LOCA NO PART NO DESCRIPTION L200 L201 L202 L204 L210 L211 L213 L215 L231 L232 L2500 L2501 L2502 L2503 L2504 L2505 L300 L300 L301 L302 L304 L401 L402 L403 L403 L404 L405 L406 L407 L420 L421 L422 L423 L424 L425 L426 L500 L500 L501 L502 L502 L503 L503 L504 L506 L507 L508 L509 L510 L511 L...

Page 45: ...0KHZ 2KHz RCA PMJ6054 39 14 0MM 1RX3C Complex PMJ030 03 19P DIN RCA 14MM Fiber Optic TOTX177 3P TX 2 54MM ANGLE RCA PMJ029 06 14 0MM 1RX4C Scart PSC003 01 21P 21P 1C 3 81MM Scart PSC003 01 21P 21P 1C 3 81MM Scart PSC003 01 21P 21P 1C 3 81MM DIN DC1R019WDH SOCKET 21P DIN DC1R019WDH SOCKET 21P Phone PEJ024 01 1P 4P STRAIGHT Phone PEJ024 01 1P 4P STRAIGHT Phone PEJ024 01 1P 4P STRAIGHT Conector Wafer...

Page 46: ...MAIN Control Pre AMP ...

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Page 48: ...May 2006 Printed in Korea P NO 38289S0028D ...