LG 42PC1R Series Service Manual Download Page 24 | Manualshive

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6. In case of no sound

(1) Symptom

1) LED is white.
2) Screen display but sound is not output.

(2) Check following

Is the SPK cable

normal?

Is the SPK cable

connected well?

Cable inserts well.

No

No

Replace IC400

No

Replace IC401

No

Replace SPK cable

Yes

Yes

Is the RF/ AV/

Component/ RGB/

HDMI sound normal?

No

Does IC400

Operates ?

Does IC401

Operates ?

Replace IC402

No

Does IC402

Operates ?

Replace

VSC B/D

Yes

Yes

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Summary of Contents for 42PC1R Series

Page 1: ...TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS PP62A MODEL 42PC1R 42PC1R ZH 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 25 BLOCK DIAGRAM 27 EXPLODED VIEW 28 EXPLODED VIEW PARTS LIST 29 REPLACEMENT PARTS LIST 30 SCHEMATIC DIAGRAM ...

Page 3: ... 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 measur...

Page 4: ...ttons are used for teletext only TELETEXT models or Programme edit Switches the sub picture PIP DW POP or off mode Adjusts the sub picture size Moves the sub picture Selects a programme for the sub picture Exchanges the main sub images in PIP Twin picture mode Selects the input source for the sub picture in PIP Twin picture mode Controls some video cassette recorders or DVD players when you have a...

Page 5: ... e e e e e e e e e e e e e e e e e e e e e g g g g g g e e h h h h h h e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e g g g g g g e e h h h...

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

Page 7: ...surround sound system Euro Scart Socket AV1 AV2 Connect scart socket input or output from an external device to these jacks Power Cord Socket This TV operates on an AC power The voltage is indicated on the Specifications page Never attempt to operate the TV on DC power Remote Control Port HDMI Input Connect a HDMI signal to HDMI IN Connect DVI VIDEO signal to HDMI DVI port with DVI to HDMI cable R...

Page 8: ... Manual Owner s Manual Batteries OK INPUT TV TV INPUT PIP PR PIP PR SWAP PIP INPUT DVD ARC EXIT VOL TIME REVEAL INDEX Q VIEW MUTE PR SLEEP LIST I II MENU TEXT PIP SIZE POSTION VCR POWER 1 2 3 4 5 6 7 8 9 10 FAV Remote Control Power Cord 2 Wall brackets 2 eye bolts 2 bolts for stand assembly For 42PC1R 42PC3R 50PC1R Polishing Cloth Polish the screen with the cloth Option ...

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: ... 5 The receiver must be 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 1 1 42 XGA MODULE 10 Display Screen Device Aspect Ratio PDP Module Operating Environment Storage Environment Input Voltage 1 2 3 4 5 6 No Item Specif...

Page 11: ...per Heterodyne PAL SECAM NTSC NTSC4 43 PAL SECAM NTSC NTSC4 43 PAL SECAM NTSC NTSC4 43 Y Cb Cr Y Pb Pr RGB PC RGB DTV HDMI PC HDMI DTV SOUND PC Audio Component 1EA AV 2EA 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 L R Input Display Screen Device Aspect Ratio PDP Module Operating Environment Storage Environment Input Voltage 1 2 3 4 5 6 No Item Specifi...

Page 12: ...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 then...

Page 13: ...t 100 Color Bar Pattern 5 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 5 5 3 Method of Auto RGB Color Balance 1 Input the Component 720p 100 Color Bar signal into Component1 or Component2 2 Set the PSM to Dynamic mode in Picture menu 3 Press INSTART key on R C for adjustm...

Page 14: ...which on label of panel right top Deviation 0 5V 8 EDID The Extended Display Identification Data DDC Display Data Channel download 8 1 Required Test Equipment 1 Adjusting PC with S W for writing EDID Data S W EDID TESTER Ver 2 5 2 A Jig for EDID Download 3 Cable Serial 9Pin or USB to D sub 15Pin cable D sub 15Pin cable DVI to HDMI cable 8 2 Setting of device 8 3 Preparation for Adjustment 1 As abo...

Page 15: ... the White Balance adjustment mode by pressing the INSTART key twice White Balance on R C 4 Stick sensor to center of the screen and select each items Red Green Blue Gain and Offset using D E CH key on R C 5 Adjust Only High Light with R Gain B Gain using F G VOL key on R C 6 Adjust it until color coordination becomes as below Initially R G B gain and R G B offset values are fixed as below Red Gai...

Page 16: ... 16 12 Power off History This function indicated Power off history You can go into this mode by ADJ key in ADJ remocon Fig 13 Power off History ...

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 LG Innokek Power Board Structure ...

Page 19: ...lter and Power Board Cable connected Connect the Cable Yes No Is the Fuse F101 on Power Board normal Replace the Fuse Yes No Is the Power Board and 13P of VSC Board Cable connected Connect the Cable Yes No After the cable connect is removed to Power Board except the CN101 connection cable the AC voltage marking is authorized on manual When ST BY 5V is not operated replace Power Board ...

Page 20: ...age normal after remove P5 P6 connector of Y B D Is the Fuse FS2 on Y B D normal In case of open is replace Yes No Yes Yes Replace Z Board Is the Z Board normal Is the output voltage normal after remove P1 connector of Z B D Is the Fuse FS1 FS2 on Z B D normal In case of open is replace Yes No Yes Is the X Board normal Is the output voltage normal after remove P1 2 3 4 5 connector of X B D After r...

Page 21: ... D Is the Fuse FS2 normal on Y B D In case of open is replace Yes No Yes Yes Replace Z Board Is the Z Board normal Is normal the output voltage after remove P1 connector of Z B D Is the Fuse FS1 FS2 normal on Z B D In case of open is replace Yes No Yes Is the X Board normal Is the output voltage normal after remove P1 2 3 4 5 connector of X B D After remove P1 P2 P3 output voltage normality Replac...

Page 22: ...rged continuously becomes accomplished from module 2 Check following 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 FIL8662 IC IC800 Operates Replace FIL8662 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 23: ...s the Tuner Cable connected well Cable inserts well Yes No No Yes Is the FIL8662 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 FIL8662 normal Is the Input volta...

Page 24: ... following Is the SPK cable normal Is the SPK cable connected well Cable inserts well No No Replace IC400 No Replace IC401 No Replace SPK cable Yes Yes Is the RF AV Component RGB HDMI sound normal No Does IC400 Operates Does IC401 Operates Replace IC402 No Does IC402 Operates Replace VSC B D Yes Yes ...

Page 25: ... 25 PRINTED CIRCUIT BOARD MAIN TOP ...

Page 26: ... 26 MAIN BOTTOM SIDE A V PRE AMP CONTROL ...

Page 27: ... 27 BLOCK DIAGRAM ...

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

Page 29: ...SKD 304 4980900116A Supporter COMPLEX ASSY AL FILTER LEFT 42PC1 TA ALRLLH RUSSIA 4980900116B SUPPORTER ASSY AL FILTER LEFT 42PC1 TA C SKD 400 3809900103A Cover Assembly 42PC1R NON ANALOG ALRLLH RUSSIA 3809900103P BACK COVER ASSEMBLY 42PC1 NON LGEMA ASSY ONLY ANALOG 430 3501900014A Base Assembly D T SPK STAND AP 42DC11 MF056A FOLDING STAND ALRLLH RUSSIA 3501900014C BOARD ASSEMBLY D T SPK STAND AP 4...

Page 30: ...0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DD200009AF 0DD200009AF 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA 0DS226009AA CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SA1504S ASY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SA1504S ASY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SA1504S ASY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SA1504S ASY BK...

Page 31: ... 50V 10 R TP X7R LOCA NO PART NO DESCRIPTION C1018 C1019 C102 C1020 C1021 C1022 C1023 C1024 C1025 C1026 C1027 C1029 C103 C1030 C1031 C1032 C1034 C1035 C1039 C104 C1040 C1041 C1042 C1044 C1045 C1046 C1047 C1048 C1049 C105 C1050 C1051 C1053 C1054 C1058 C1059 C1060 C1061 C1062 C1063 C1064 C1065 C1066 C1067 C1068 C1069 C1070 C1071 C1072 C1073 C1074 C1075 0CK104CK56A 0CE477SF6DC 0CC330CK41A 0CE107SF6DC...

Page 32: ...0 SMD R TP LOCA NO PART NO DESCRIPTION C113 C1130 C1131 C1132 C1133 C1134 C1135 C1136 C1137 C1138 C1139 C114 C1140 C1141 C1142 C1143 C1144 C1145 C1146 C1147 C1148 C1149 C115 C1150 C1151 C1152 C1153 C1154 C1155 C1156 C1157 C1158 C116 C117 C118 C119 C120 C1200 C1201 C1202 C1205 C1207 C121 C1212 C1213 C1214 C1215 C1216 C1217 C1218 C1219 C122 0CK103CK56A 0CE107SF6DC 0CE107SF6DC 0CE107SF6DC 0CE107SF6DC...

Page 33: ...V 10 R TP X7R LOCA NO PART NO DESCRIPTION C1403 C1405 C1406 C141 C1410 C1411 C1412 C1413 C1418 C1419 C142 C1420 C1421 C1422 C1423 C1426 C1427 C1428 C1435 C1436 C1437 C1438 C1439 C1441 C1446 C1447 C1448 C1449 C1450 C1455 C1456 C1457 C1458 C1459 C1460 C1461 C1466 C1467 C1468 C1469 C147 C1470 C1473 C1474 C1475 C1476 C148 C149 C150 C151 C152 C174 0CE106SK6DC 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104C...

Page 34: ...316 C317 C318 C319 C320 C321 C322 C326 C327 C328 C329 C330 C331 C332 C333 C334 C335 C336 C337 C338 C339 C340 C341 C342 C343 C344 C345 C346 C347 C348 C349 C350 C351 C352 C353 C354 C355 C356 C357 C401 C402 C403 C405 C406 C407 C408 C409 C411 C412 C414 0CE107SF6DC 0CK103CK56A 0CE226SF6DC 0CE107SF6DC 0CE476SF6DC 0CK104CK56A 0CK103CK56A 0CK104CK56A 0CK104CK56A 0CK225DFK4A 0CK474CH94A 0CK474CH94A 0CK225D...

Page 35: ...UF 1608 50V 10 R TP X7R 0 1UF 1608 50V 10 R TP X7R LOCA NO PART NO DESCRIPTION C614 C615 C618 C619 C620 C621 C622 C623 C800 C803 C806 C809 C810 C812 C813 C814 C815 C816 C817 C818 C819 C820 C821 C822 C823 C824 C825 C826 C827 C828 C829 C830 C831 C832 C833 C834 C835 C836 C837 C838 C839 C840 C841 C842 C843 C844 C845 C846 C847 C848 C849 C850 0CE476SF6DC 0CE476SF6DC 0CK104CK56A 0CK104CK56A 0CE476SF6DC 0...

Page 36: ... TP X7R 0 01UF 1608 50V 10 R TP X7R LOCA NO PART NO DESCRIPTION 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 C939 C940 C941 C942 C943 C944 C945 C946 C947 C948 C949 C950 C951 L1000 L1101 0CE226SF6DC 0CE226SF6DC 0CK104CK56A 0CK103CK56A 0CK104CK56A 0CK103CK56A 0CK104CK56A ...

Page 37: ...L205 L308 L309 L310 L400 L401 L403 L500 L501 L502 L503 L600 L601 L801 L901 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200J000013 6200JB8010L 6200JB8010L 6200JB8010L 6...

Page 38: ... 3P YWR SCART UPJ R1 031 UGCOM S T RCA PPJ209 02 PARK 5P RCA GBRWR RCA PPJ148 13 PARK ELEC S T 3P YWR DIN PSJ014 01 PARK ELEC S VHS 4P RCA KCN BT 0 0055 KSD 10MM PAL DIN DC1R019WDH JAE 0 5MM DIN DC1R019WDH JAE 0 5MM RCA PPJ200 02 PARK ELEC S T 10MM PHONE PEJ024 01 PARK 7P 10MM WITH S W PHONE PEJ024 01 PARK 7P 10MM WITH S W PHONE PEJ024 01 PARK 7P 10MM WITH S W CONNECTOR CIRC WAFERSTAPLE CONNECTOR ...

Page 39: ...HDMI CORTEZ ...

Page 40: ...POWER DDR MEMORY RS232C ...

Page 41: ...Feb 2006 Printed in Korea P NO 38289S0024A ...

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