LG 42PX4R Service Manual Download Page 1

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PLASMA TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : MF-056A

MODEL : 42PX4R

42PX4R-ZA

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

VOL

TV/AV

Summary of Contents for 42PX4R

Page 1: ...ANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MF 056A MODEL 42PX4R 42PX4R ZA website http biz LGservice com e mail http www LGEservice com techsup html PR VOL MENU TV AV OK ...

Page 2: ...ONS 3 DESCRIPTION OF CONTROLS 4 SPECIFICATIONS 9 ADJUSTMENT INSTRUCTIONS 11 TROUBLE SHOOTING GUIDE 15 BLOCK DIAGRAM 24 EXPLODED VIEW 26 EXPLODED VIEW PARTS LIST 27 REPLACEMENT PARTS LIST 28 SCHEMATIC DIAGRAM PRINTED CIRCUIT BOARD ...

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: ...he cur rent mode D D E E or F F G G Adjusts menu settings Selects menu item MENU Displays on screen menus one by one Exits the current menu Memorizes menu changes ZOOM ZOOM Enlarges or reduces the main picture size TEXT These buttons are used for teletext For further details see the Teletext section Note In teletext mode the PIP PR SWAP and PIP INPUT buttons are used for teletext function SSM To s...

Page 5: ... from standby 4 MENU Displays on screen menus one by one Exits the current menu Memorizes menu changes 5 OK Accepts your selection or displays the current mode 6 D D E E Programme Up Down Selects a programme or a menu item Switches the set on from standby F F G G Volume Up Down Adjusts the volume Adjusts menu settings 7 Power Indicator Illuminates red in standby mode Illuminates green when the set...

Page 6: ...ect DVD video outputs to Y PB PR of COMPONENT INPUT and audio outputs to Audio sockets of AUDIO INPUT AUDIO VIDEO IN SOCKETS AV4 Connect the audio video out sockets of external equipment to these sockets S VIDEO AUDIO IN SOCKETS Connect the S VIDEO out socket of an VCR to the S VIDEO socket Connect the audio out sockets of the VCR to the audio sock ets as in AV4 5 VARIABLE AUDIO OUTPUT 6 EURO SCAR...

Page 7: ...1024 70 09 85 08 70 08 85 03 59 94 66 66 72 80 75 00 85 00 60 00 70 00 75 00 60 00 70 00 75 00 56 25 60 31 72 18 75 00 85 06 74 55 60 00 70 06 75 02 85 00 60 05 70 01 75 00 75 06 60 02 60 02 31 468 37 861 31 469 37 927 31 469 35 000 37 861 37 500 43 269 31 500 37 799 39 375 31 500 37 799 39 375 35 156 37 879 48 077 46 875 53 674 49 725 48 363 56 476 60 023 68 677 54 348 63 995 67 500 68 681 60 023...

Page 8: ...ing bracket Video cables Audio cables Ceiling mounting bracket 40 42 50 42 40 Secure the set assembly by joinning it to a wall by using the Eye Bolts Wall brackets Joinning the set assembly to the wall to protect the set tumbling After the set must be mounted on a desktop install the Eye Bolts on the set as shown Insert the 2 Eye Bolts and tighten securely in the holes on the bracket Install the w...

Page 9: ...ordance with BOM 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 General Specification Remark Safety IEC60065 EMI CISPRI3 Safety IEC EN60065 EMI EN55013 EMS EN55020 Model Name 42PX4RV TA 42PX4RV ZA Market Non EU EU Rema...

Page 10: ...io Input 4EA Wired Control Audio variable out No 1 2 3 4 5 6 7 8 9 10 11 12 13 Specification EU PAL B G I D K 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 Discrete IR Remark 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 L R Input ...

Page 11: ...he 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 set your PORT COM1 2 3 correctly 2 Connect RS 232C cable and turn on the...

Page 12: ... DDC Display Data Channel download 5 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 5 2 Setting of device 5 3 Preparation for Adjustment 1 As above Fig 5 Connect the Set EDID Download Jig PC Cable 2 Turn on the PC EDID Download Jig And Execu...

Page 13: ...on remote control for adjustment then operate heat run more than 15 minutes 2 As below Fig 7 1 Supply 216Level 85 IRE full screen pattern to Video input 42PX4RV TA AV1 AV2 INPUT 50Hz 42PX4RV ZA AV4 AV5 INPUT 3 Press the TV AV KEY on R C for converting input mode 4 Set the PSM to Standard mode in Picture menu 5 Enter the White Balance adjustment mode by pressing the INSTART key twice White Balance ...

Page 14: ...andard 0 7Vpp horizontal black and white pattern as Fig 10 9 2 Method of Auto RGB Color Balance 1 Input the PC 1024x768 60Hz horizontal black and white pattern into RGB 2 Set the PSM to Standard mode in Picture menu 3 Press ADJ key on R C for adjustment 4 Press the G Vol key operate To set then it becomes automatically 5 Auto RGB OK means completed adjustment 9 Default Value in Adjustment mode 9 1...

Page 15: ...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 16: ... 16 1 2 Sony Power Board Structure 1 2 3 T502 Vs Trans T702 Va Trans T101 St by Trans T103 Low Voltage Trans ...

Page 17: ... 17 1 3 Sanken LGIT Power Board Structure 1 2 3 T221 Vs Trans T271 Va Trans T121 St by Trans T201 Low Voltage Trans ...

Page 18: ...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 7P of VSC Board Cable connected Connect the Cable Yes No After the cable connect is remved 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 19: ...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 20: ... 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 21: ...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 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 22: ...s the Tuner Cable connected well Cable inserts well Yes No No Yes Is the FIL8532 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 Input volta...

Page 23: ... 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 24: ... 24 BLOCK DIAGRAM cable ...

Page 25: ...MEMO 25 ...

Page 26: ... 26 EXPLODED VIEW 301 304 303 302 206 201 580 410 400 430 501 401 520 200 202 203 204 205 121 601 600 120 531 530 700 305 570 300 591 590 ...

Page 27: ...304 4980V01134B C Supporter COMPLEX ASSY AL 0 8T LEFT 305 3790V00709C FILTER MECH RT 42PX10 LGM42 09 MITSUI 42 ETCHING MESH GLASS FILTER 400 3809V00513J W Cover Assembly back cover 401 3301V00049B PLATE ASSEMBLY ASSY 3300V00440A RZ 42PX40 MF056A 410 4980V00C84A D Supporter COMPLEX ASSY AL 430 3501V00216A H Base Assembly ASSY STAND 501 3301V00055A PLATE ASSEMBLY AV 3301V00053 3301V00054 42PX4RV TA ...

Page 28: ...R150400BA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR102008AA 0TR387500AA 0TR102008AA 0TR387500AA 0TR387500AA 0TR387500AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD200009AF 0DD200009AF 0DD226239AA 0DD226239AA 0DD226239AA CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC KRA102S R TP KEC SOT23 CHIP TR CHIP 2SC3875S ALY BK...

Page 29: ...1102 C1105 C1107 C1108 C1110 C1115 C1116 C1117 C1118 C1119 C1120 C1126 C113 C1135 C1136 C1137 C1138 C114 C1148 C1149 C1150 C1151 C1154 C1159 C116 C1162 C1165 C1166 C117 C118 C1185 C1186 C1187 C1188 C1189 C119 C1190 C1191 C1192 C1193 C1194 C1195 0CE477SF6DC 0CE227SF6DC 0CE476SF6DC 0CE476SF6DC 0CE476SF6DC 0CE476SF6DC 0CE477SF6DC 0CE106SF6DC 0CE476SF6DC 0CE476SF6DC 0CE476SF6DC 0CE476SF6DC 0CE107SF6DC...

Page 30: ...F MVG 16V 20 R TP SMD SMD LOCA NO PART NO DESCRIPTION C300 C304 C305 C307 C310 C315 C318 C319 C320 C321 C325 C328 C330 C338 C340 C342 C347 C402 C403 C413 C418 C425 C444 C451 C456 C457 C462 C463 C464 C465 C480 C481 C482 C483 C484 C495 C527 C610 C614 C615 C620 C621 C622 C728 C729 C730 C731 C735 C737 C739 C745 C750 0CE107SF6DC 0CE226SF6DC 0CE107SF6DC 0CE476SF6DC 0CK225DFK4A 0CK225DFK4A 0CK225DFK4A 0C...

Page 31: ... AR1204 AR1205 AR1301 AR1302 AR1303 AR1304 AR1305 AR1306 AR700 AR701 AR702 AR703 AR704 AR705 R230 R618 D1003 D1103 IC103 SW101 SW102 SW103 SW104 SW105 SW106 SW107 SW108 SW700 SW800 L100 366 921J 366 921F 6602T12007D 6630VF00710 366 922L 366 932C 366 932B 6602T12006M 366 932E 6602T12007D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZ...

Page 32: ...0 OHM MLB 321611 0500P N2 R TP 500 OHM MLB 321611 0500P N2 R TP 500 OHM MLB 321611 0500P N2 R TP 500 OHM MLB 201209 1000L N2 R TP 1000OHM 350MA LOCA NO PART NO DESCRIPTION L115 L119 L120 L1204 L1205 L1206 L1207 L1208 L1209 L121 L122 L123 L124 L125 L126 L1301 L200 L201 L202 L203 L204 L300 L301 L302 L400 L401 L402 L403 L408 L409 L410 L500 L502 L503 L506 L604 L606 L802 X1200 X300 X400 X700 X800 JK100...

Page 33: ...UEJ CV 032 10MM VERTICAL TYPE SHIELD UEJ CV 032 10MM VERTICAL TYPE SHIELD MANUAL USER MF056A 151E TX REMOTE CONTROLLER 42PX4R ZA INPUT POWER CORD SP 023 IS 14 I SHENG POWER CORD SP60 IS14 I SHENG BSI 1870MM FIXER WALL ASSY PDP SET CABLE COAXIAL 150MM KCA NS 0 0053 CABLE DVI LVDS UL20276 AWG30 600MM CABLE COAXIAL UL1365 26 VW 1 SOFT WARE 3 11V F34B 1024X768 WAFER IL G 6P LGC 2 5mm R A REMOTE CONTRO...

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Page 37: ...PRINTED CIRCUIT BOARD MAIN TOP MAIN BOTTOM SIDE A V INDEX TOP INDEX BOTTOM CONTROL TOP CONTROL BOTTOM ...

Page 38: ...Dec 2005 Printed in Korea P NO 38289S0052A ...

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