LG 42PC1RR Series Service Manual Download Page 26 | 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 IC404.

No

Replace SPK cable.

Yes

Yes

Is the RF/ AV/

Component/ RGB/

HDMI sound normal?

No

Does IC400

Operates ?

Does IC404

Operates ?

Replace

VSC B/D.

Yes

Yes

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Summary of Contents for 42PC1RR Series

Page 1: ... SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MF 056L MODEL 42PC1RR 42PC1RR ZL website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...S 3 DESCRIPTION OF CONTROLS 4 SPECIFICATIONS 10 ADJUSTMENT INSTRUCTIONS 12 TROUBLE SHOOTING GUIDE 19 BLOCK DIAGRAM 30 EXPLODED VIEW 32 EXPLODED VIEW PARTS LIST 33 REPLACEMENT PARTS LIST 34 SCHEMATIC DIAGRAM PRINTED CIRCUIT DIAGRAM ...

Page 3: ...k 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 measu...

Page 4: ...ice Controls a video cassette recorder These buttons are used for X Studio For further details see the X Studio section Selects the wanted functions In AV1 AV2 S Video2 AV3 AV4 Component RGB HDMI DVI input sources screen returns to the last TV programme Brings up the HOME menu Displays on screen menus one by one Exits the current menu Memorizes menu changes Clears all on screen displays and return...

Page 5: ...ts PIP POP or DW modes Selects a programme for the sub picture Alternates between main and sub picture Selects the input mode for the sub picture Adjusts the sub picture size Moves the sub picture to D D E E or F F G G direction Displays the programme table Returns to the previously viewed programme Sets the sleep timer Selects a favourite programme Open the battery compart ment cover on the back ...

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: ...rt with DVI to HDMI cable Variable Audio Output Connect an external amplifier or add a sub woofer to your surround sound system Antenna Input Power Cord Socket This set operates on an AC power The volt age is indicated on the Specifications page Never attempt to operate the set on DC power 1 2 3 6 4 5 7 8 9 10 11 VARIABLE AUDIO OUT AV IN 4 L MONO R AUDIO AUDIO VIDEO VIDEO DVI IN RS 232CIN REMOTE C...

Page 8: ...ITION INDEX FAV SLEEP I II PIP ARC Q VIEW LIST TEXT OK VOL PR MULTIMEDIA POWER CABLE HOLD REVEAL TIME MARK EXIT LIVE TV TIME SHIFT TIME SHIFT Remote Control Power Cord 2 Wall brackets 2 eye bolts For 42PC1RR Polishing Cloth Polish the screen with the cloth Option 2 bolts for stand assembly This feature is not available for all models ...

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 42 XGA MODULE Chassis MF 056L 42PC1RR ZL EU LG Model Name Market Brand Remark 42PC1RR ZL Safety IEC EN60065 EMI EN55013 EMS EN55020 TEST EU Model Appl...

Page 11: ...EA 1 2 3 4 5 6 7 8 9 10 11 12 13 No Item Specification Remark EU PAL BG I DK NTSC BAND PAL NTSC VHF UHF C1 C69 2 83 CATV S1 S47 1 71 Upper Heterodyne PAL SECAM NTSC PAL SECAM NTSC PAL SECAM NTSC Y Cb Cr Y Pb Pr RGB PC RGB DTV HDMI PC HDMI DTV PC Audio Component 1EA AV 2EA SM MMC SD MS Pro CF Microdrive 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 Compat...

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 the...

Page 13: ...lect proper Model for each model 4 Select flash file for each model 5 Click the Download button It means the completion of the ROM download if all items show OK and Status is changed by PASS at the lower right corner of the window 4 2 Sub Program Down Load for DVR 1 Download Setup You must change the DVR Download mode by using the Turbo Sound Key on the remote controller 2 MDS Program Setup Open t...

Page 14: ...te Level is not correct Do select 100 Color Bar Pattern 6 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 6 6 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 Pres...

Page 15: ...U for recoding Recoding can t be done under the Time is not active When main power is off the time will be resetted 2 Manual Recoding 1 Set recoding information and check it on the scheduled list 3 Instant Recoding 1 Press the recoding button on remote control and record a present program for 10 seconds then press the stop button to stop recoding 2 After finishing recoding play the recoded clip on...

Page 16: ... download 10 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 10 2 Setting of device 10 3 Preparation for Adjustment 1 As above Fig 6 Connect the Set EDID Download Jig PC Cable 2 Turn on the PC EDID Download Jig And Execute the S W EDID TESTER...

Page 17: ...justment mode by pressing the IN START key twice White Balance on R C 6 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 7 Adjust Only High Light with R Gain B Gain using F G VOL key on R C 8 Adjust it until color coordination becomes as below Initially R G B gain and R G B offset values are fixed as below Red Gain 82 Green Gain 80 B...

Page 18: ...rman Spain Italy 4 Non EU English France German Spain Italy Russia China Thai 3 EU East English France German Spain Italy Poland Russia 2 EU North English France German Spain Italy Sweden Norway Denmark 1 EU 8 English France German Spain Italy Netherland Portugal Greece 0 EU5 English France German Spain Italy EU All English France German Spain Italy 0 English German Swedish Italian French Spanish ...

Page 19: ...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 20: ... 20 1 2 Power Board Structure ...

Page 21: ...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 22: ...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 23: ... 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 24: ...ged continuously becomes 3 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 25: ...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 26: ... 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 IC404 No Replace SPK cable Yes Yes Is the RF AV Component RGB HDMI sound normal No Does IC400 Operates Does IC404 Operates Replace VSC B D Yes Yes ...

Page 27: ...nected well 12pin 4pin 40pin Insert cables well Change time shift mode from off to on Yes No Yes Yes Yes Yes No Power B D works well HDD jumper is located in Master 31pin flat cables are connected well Check U1 U7 U11 and These ICs are wrong Change ICs Change power B D Place jumper to master position Connect 31pin cable Change the HDD Is it ok Change the DVR B D Yes Yes No No No No ...

Page 28: ...s OK Connect speak cable Sound is ok Turn off the mute key Are power cables connected well Connect power cables power B D Yes Yes No No No No Yes Yes Yes No Is 31pin cable ok Check speakers Are they ok Check U13 U14 U1 U7 Check MSP IC406 IC404 Is it ok Connect 31p cable Change the speakers Change the ICs Is it ok Change B D Yes No No No ...

Page 29: ...eck 31pin flat cable Is it ok Check 40pin 4pin HDD cable Is it ok Connect cable well Connect 31pin well Check U11 U1 U7 Is it ok Check 2068 IC1206 Is it ok Change HDD Is it ok Change B D Yes No Yes2 No No Yes No No Remove the recorded lists and Record one more time and Play again Is it ok Yes1 ...

Page 30: ... 30 BLOCK DIAGRAM ...

Page 31: ... 31 ...

Page 32: ... 32 EXPLODED VIEW 600 602 601 121 120 570 203 204 206 200 580 205 201 202 240 250 501 301 304 303 302 560 300 502 520 550 552 551 400 430 530 ...

Page 33: ...ND LGEGF U A E ISRAEL LGEMC MOSCOW 3501900014C Base Assembly AP 42DC11 MF056A D T SPK STAND FOLDING STAND LGERS C SKD 501 3301900095M Plate Assembly AV 42PC1RR ZL LGEGF U A E ISRAEL LGEMC MOSCOW 3301900095S Plate Assembly AV ANALOG PVR CKD 502 3301900112B Plate Assembly ASSY ANALOG PVR COVER 42PC1RR ZL LGEGF U A E ISRAEL LGEMC MOSCOW 3301900112C Plate Assembly ASSY ANALOG PVR COVER 42PC1RR ZL C SK...

Page 34: ... 0TR387500AA 0TR150400BA 0TR150400BA 0TR387500AA 0TR387500AA 0TR150400BA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA CS98301 CMZ 3 3TO3 3 27MHZ HY57V641620ETP H 64MBIT HY57V641620ETP H 64MBIT FET BSS83 N CHANNEL MOSFET 10V 50MA FET BSS83 N CHANNEL MOSFET 10V 50MA FET BSS83 N CHANNEL MOSFET 10V 50MA FET BSS83 N CHANNEL MOSFET 10V 50MA FET BSS83 N CHANNEL MOSFET 10V 50MA FET BSS83 N ...

Page 35: ... NO PART NO DESCRIPTION D504 D505 D506 ZD300 ZD301 ZD400 ZD401 ZD600 BC1 BC10 BC100 BC101 BC102 BC103 BC104 BC105 BC106 BC107 BC108 BC109 BC11 BC110 BC111 BC112 BC113 BC114 BC115 BC116 BC117 BC118 BC119 BC12 BC120 BC121 BC122 BC123 BC124 BC125 BC126 BC127 BC128 BC129 BC13 BC130 BC131 BC132 BC133 BC134 BC135 BC136 0DR050008AA 0DR050008AA 0DR050008AA 0DR050008AA 0DR050008AA 0DZRM00248A 0DZRM00248A 0...

Page 36: ...0V X7R LOCA NO PART NO DESCRIPTION BC56 BC57 BC58 BC59 BC6 BC60 BC61 BC62 BC63 BC64 BC65 BC66 BC67 BC68 BC69 BC7 BC70 BC71 BC72 BC73 BC74 BC75 BC76 BC77 BC78 BC79 BC8 BC80 BC81 BC82 BC83 BC84 BC85 BC86 BC87 BC88 BC89 BC9 BC90 BC91 BC92 BC93 BC94 BC95 BC96 BC97 BC98 BC99 C1 C10 C1000 C1001 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0C...

Page 37: ...3K500CT 10n 10 50V Y5P LOCA NO PART NO DESCRIPTION C106 C1060 C1061 C1062 C1063 C1064 C1065 C1065 C1066 C1066 C1067 C1067 C1068 C1068 C1069 C1069 C107 C1070 C1071 C1072 C1073 C1074 C1075 C1076 C1077 C1078 C1079 C108 C1080 C1081 C1082 C1082 C1083 C1083 C1084 C1084 C1085 C1085 C1086 C1087 C1088 C1089 C109 C1090 C1091 C1092 C1093 C1094 C1095 C1096 C1097 C1098 0CC050CK11A 0CK103CK51A 0CK103CK51A 0CK10...

Page 38: ...V Y5P LOCA NO PART NO DESCRIPTION C1145 C1146 C1147 C1148 C1149 C115 C1150 C1151 C1153 C1154 C1155 C1157 C1159 C1159 C116 C1161 C1162 C1163 C1164 C1165 C1166 C1167 C1168 C1169 C117 C1170 C1171 C1172 C1173 C1174 C1175 C1176 C1177 C1178 C1179 C118 C1180 C1181 C1182 C1183 C1184 C1185 C1186 C1187 C1188 C1189 C119 C1190 C1191 C1192 C1193 C1194 0CK103CK51A 0CK103CK51A 0CK103CK51A 0CE476SF6DC 0CE107WF6DC...

Page 39: ...RT NO DESCRIPTION C1242 C1243 C1244 C1245 C1246 C1247 C125 C1253 C1254 C129 C130 C131 C132 C133 C134 C135 C136 C137 C138 C140 C1404 C1412 C1413 C1414 C1415 C1431 C1432 C144 C1442 C1443 C1444 C1445 C1446 C1447 C1448 C1449 C145 C1450 C1451 C1452 C1453 C1454 C1455 C1456 C1457 C1458 C1459 C1460 C1461 C1462 C1463 C1464 0CK102CK56A 0CK102CK56A 0CK102CK56A 0CE106SH6DC 0CK104CK56A 0CE476SF6DC 0CE476XFKDC ...

Page 40: ... NO PART NO DESCRIPTION C1824 C1831 C1833 C1835 C1860 C1900 C1901 C1901 C1902 C1903 C1904 C1905 C1906 C1907 C1908 C1908 C1909 C1909 C1910 C1916 C1917 C1919 C1920 C1923 C1924 C1925 C1927 C1928 C1929 C2 C200 C201 C202 C203 C204 C206 C207 C208 C210 C211 C212 C213 C214 C215 C216 C217 C218 C219 C220 C221 C222 C223 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK103CK51A 0CE476SF6DC 0CE47...

Page 41: ...T 470n 20TO 80 25V LOCA NO PART NO DESCRIPTION C327 C328 C329 C33 C330 C331 C332 C333 C334 C335 C337 C338 C339 C34 C340 C341 C342 C342 C344 C345 C346 C347 C348 C349 C35 C350 C350 C36 C37 C38 C39 C4 C40 C400 C401 C402 C403 C403 C406 C407 C408 C409 C41 C410 C411 C412 C413 C413 C417 C419 C42 C420 0CK474CH94A 0CK225DFK4A 0CK474CH94A 0CK104CK56A 0CK225DFK4A 0CK474CH94A 0CK474CH94A 0CK474CH94A 0CK474CH9...

Page 42: ...VC4 7M 4 7u 20 50V 19MA LOCA NO PART NO DESCRIPTION C482 C482 C49 C496 C497 C498 C5 C50 C502 C503 C51 C516 C517 C52 C524 C527 C53 C54 C540 C55 C56 C57 C58 C59 C6 C60 C601 C602 C603 C605 C607 C609 C61 C610 C62 C622 C622 C623 C624 C625 C626 C63 C64 C65 C66 C67 C68 C69 C7 C70 C700 C701 0CE475SK6DC 0CE475WK6DC 0CK104CK56A 0CK104CK56A 0CK474CH94A 0CK104CK56A 0CC470CK41A 0CK104CK56A 0CK103CK56A 0CK103CK...

Page 43: ...0V X7R LOCA NO PART NO DESCRIPTION C760 C761 C762 C763 C764 C764 C765 C766 C767 C768 C769 C770 C771 C772 C8 C800 C802 C803 C805 C807 C808 C810 C811 C812 C813 C814 C815 C816 C817 C818 C819 C820 C821 C822 C823 C824 C825 C826 C830 C831 C832 C833 C833 C834 C835 C836 C837 C837 C838 C839 C840 C841 0CE226SF6DC 0CK104CK56A 0CE226SF6DC 0CK104CK56A 0CE226SF6DC 0CE226WF6DC 0CK104CK56A 0CK104CK56A 0CE226SF6DC...

Page 44: ...n 10 50V X7R LOCA NO PART NO DESCRIPTION C893 C894 C895 C896 C896 C897 C898 C899 C9 C901 C902 C903 C904 C904 C905 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 C930 C931 C932 C933 C934 C935 C936 C937 C938 C939 C940 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CE226SF6DC 0CE226WF6DC 0CK104CK56A 0CK104CK56A 0CK104CK56A 0CK10...

Page 45: ...02 L404 L405 L406 L7 L8 L9 L101 L102 L103 L104 L105 L106 L107 L108 L109 L117 L118 L127 L128 L129 L205 L206 L207 L303 L411 L412 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 0CC101CK41A 6140VB0004B 6140VB0004B 6140VB0004B 6140VB0004B 6140VB0004B 6140VB0004B 6140VB0022A 6140VB0022A 6140VB0022A 6140VB0022A 6140VB0004B 6140VB0004B 6140VB0004B 0LC1032101A 0LCML00020G 0LCML00020G 0LCML00020G 0LCML00020...

Page 46: ...4 SW105 SW106 SW107 SW108 SW700 SW800 AL1200 AL1201 AL1202 AL1203 AL1204 AL1205 AR1200 AR1201 AR1202 AR1203 AR1204 AR1205 L100 L1004 L1005 L1006 L1007 L1008 L1009 L1010 L1011 L1012 L1013 L1014 L1015 L1016 L1017 L1018 L1019 L1020 L1021 L1022 L1023 L1024 L1026 L1030 L110 0DLAU0410AA 140 313B 140 313B 140 313B 140 313B 140 313B 140 313B 140 313B 140 313B 6600VR1004A 6600VR1004A 6210TCE002B 6210TCE002...

Page 47: ...0P N2 500OHM MLB 321611 0500P N2 500OHM MLB 321611 0500P N2 500OHM MLB 321611 0500P N2 500OHM LOCA NO PART NO DESCRIPTION L408 L409 L410 L413 L414 L415 L416 L500 L502 L503 L506 L604 L606 L607 L701 L802 L804 L805 PFB1 PFB10 PFB11 PFB12 PFB13 PFB14 PFB15 PFB16 PFB17 PFB18 PFB2 PFB3 PFB4 PFB5 PFB6 PFB7 PFB8 PFB9 X1200 X300 X400 X401 X700 X800 Y1 JK100 JK101 JK101 JK103 JK104 JK105 JK1200 6200J000013 ...

Page 48: ...r SMAW200 12P 12P 2 00MM Conector Wafer SMW250 10P 10P 2 50MM Conector Wafer GT121 31P TD 31P 1 25MM Conector Wafer SMW250 03P 3P 2 50MM Conector Wafer SMAW200 12P 12P 2 00MM Conector Wafer SMW250 03P 3P 2 50MM Conector Wafer SMW250 04P 4P 2 50MM Conector Wafer SMW250 04P 4P 2 50MM Conector Wafer SMW200 10P 10P 2 00MM Conector Wafer SMW200 10P 10P 2 00MM Conector Wafer GT121 31P TD 31P 1 25MM Cone...

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Page 50: ......

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Page 52: ...MAIN TOP MAIN BOTTOM CONTROL PRE AMP SIDE A V ...

Page 53: ...Apr 2006 Printed in Korea P NO 38289S0035A ...

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