LG 42PX3RVA Service Manual Download Page 23 | Manualshive

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6. In case of no sound

(1) Symptom

Ø

LED is green

Ø

Screen display but sound is not output

(2) Check follow

Is normal the SPK

cable?

Is the SPK cable

connected well?

Cable inserts well.

No

No

Replace IC400

No

Replace IC401

No

Replace SPK cable

Yes

Yes

Is normal the RF/ AV/

Component/ RGB/

HDMI sound?

No

Operates the IC400?

Operates the IC401?

Replace IC402

No

Operates the IC402?

Replace

VSC B/D

Yes

Yes

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Summary of Contents for 42PX3RVA

Page 1: ...UAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MF 056C MODEL 42PX3RVA 42PX3RVA ZC 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: ... only when Favourite programme is set to Off Otherwise each press of this button will select a stored favorite pro gramme SSM To select the sound appropriate to your viewing programme character NUMBER buttons SLEEP Sets the sleep timer I II Selects the language during dual lan guage broadcast Selects the sound output TEXT These buttons are used for teletext For further details see the Teletext sec...

Page 5: ... 3 Power Button Switches the set on from standby or off to standby 4 TV AV Button Selects the TV AV Component RGB or HDMI modes Switches the set on from standby 5 MENU Displays on screen menus one by one Exits the current menu Memorizes menu changes 6 OK Accepts your selection or displays the current mode 7 D D E E Programme Up Down Selects a programme or a menu item Switches the set on from stand...

Page 6: ...2C port on a PC 4 COMPONENT INPUT Connect 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 A...

Page 7: ...54 348 63 995 67 500 68 681 60 023 63 981 RGB HDMI mode 50PX3R series 42PX3RV series Resolution 640x350 720x400 640x480 848x480 800x600 Horizontal Frequency KHz Vertical Frequency Hz 852x480 832x624 1024x768 1360x768 1366x768 1152x864 1152x870 1280x960 1280x768 1280x1024 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 RGB 60 31 72 18 75 00 85 06 74 5...

Page 8: ...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 wall brackets on the wall ...

Page 9: ...tion by part number in accordance 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 IEC EN60065 EMI EN55013 EMS EN55020 Model Name 42PX3RVA ZC Market EU Remark PDP LGE SPEC Mak...

Page 10: ...nput 4EA Audio Output 1EA Wired Control No 1 2 3 4 5 6 7 8 9 10 11 12 13 Specification EU PAL B G I D K SECAM L L BRAND PAL SECAM VHF UHF C1 C69 CATV S1 S47 Upper Heterodyne PAL SECAM PAL SECAM NTSC PAL SECAM NTSC Y Cb Cr Y Pb Pr RGB PC RGB DTV HDMI PC HDMI DTV PC Audio 1EA Component AV 2EA Variable Audio Out Discrete IR Remark 4 System PAL SECAM NTSC PAL60 4 System PAL SECAM NTSC PAL60 L R Input ...

Page 11: ...ly digital pattern 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 co...

Page 12: ...quipment 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 Execute the S W EDID TESTER Ver 2 5 3 Set up S W option Rep...

Page 13: ...remote control for adjustment then operate heat run more than 15 minutes 2 As below Fig 7 Supply Window or Gray step pattern to Video input RZ 42PX30 AV4 AV5 INPUT 50Hz 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 on R C 6 Stick sensor to center of the ...

Page 14: ...ndard 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 10 Default Value in Adjustment mode 10 ...

Page 15: ... signal Doesn t the high tension output come out Doesn t the VSC signal Vs ON come out Yes Yes High tension output voltage Drop it occurs When remove the Y B D Module Input Connector output voltage Drop it occurs When remove the Y Z B D Module Input Connector Power Board high tension output voltage Drop it occurs 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 Power Board Structure 1 2 3 T221 Vs Trans T271 Va Trans T121 St by Trans T201 Low Voltage Trans ...

Page 18: ...nnect the Line Filter and Power Board Cable Connect Cable Yes No Is normal the Fuse F101 on Power Board Replace Fuse Yes No Is connect the Power Board and 7P of VSC Board Cable Connect Cable Yes No After remove the cable connect to Power Board except the CN101 connection cable authorizes the AC voltage marking on manual When ST BY 5V does not operate replace Power Board ...

Page 19: ...voltage after remove P5 P6 connector of Y B D Is normal the Fuse FS2 on Y B D In case of open is replace Yes No Yes Yes Replace Z Board Is normal the Z Board Is normal the output voltage after remove P1 connector of Z B D Is normal the Fuse FS1 FS2 on Z B D In case of open is replace Yes No Yes Is normal the X Board Is normal the output voltage after remove P1 2 3 4 5 connector of X B D After remo...

Page 20: ... Is normal the Fuse FS2 on Y B D In case of open is replace Yes No Yes Yes Replace Z Board Is normal the Z Board Is normal the output voltage after remove P1 connector of Z B D Is normal the Fuse FS1 FS2 on Z B D In case of open is replace Yes No Yes Is normal the X Board Is normal the output voltage after remove P1 2 3 4 5 connector of X B D After remove P1 P2 P3 output voltage normality Replace ...

Page 21: ...scharge continuously becomes accomplished from module 2 Check follow Is normal the LVDS cable Is normal the VSC Board Is the LVDS cable connected well Cable inserts well Yes No No Yes Operates the FIL8532 IC IC800 Replace FIL8532 IC IC800 No Is normal the Ctrl Board of Module Replace Ctrl B D No No Yes Replace VSC B D Replace cable Yes ...

Page 22: ...the CXA2069Q Is the Tuner Cable connected well Cable inserts well Yes No No Yes Is normal the FIL8532 Replace Tuner No Is normal the Input voltage IIC Communication and CVBS output Yes Is normal the Input voltage IIC Communication and HV sync No Replace IC No Is normal the Input voltage IIC Communication and HV sync No Replace IC No Is normal the CXA2069Q Yes Is normal the FIL8532 Is normal the In...

Page 23: ...eck follow Is normal the SPK cable Is the SPK cable connected well Cable inserts well No No Replace IC400 No Replace IC401 No Replace SPK cable Yes Yes Is normal the RF AV Component RGB HDMI sound No Operates the IC400 Operates the IC401 Replace IC402 No Operates the IC402 Replace VSC B D Yes Yes ...

Page 24: ... 24 BLOCK DIAGRAM ...

Page 25: ...MEMO 25 ...

Page 26: ... 26 EXPLODED VIEW 300 301 304 302 202 206 203 204 201 205 580 410 530 121 601 600 120 501 401 400 303 207 200 520 430 590 ...

Page 27: ...301 4980V01203B SUPPORTER ASSY AL FILTER TOP RZ 42PX30 C SKD 302 4980V01204B SUPPORTER ASSY AL FILTER BOTTOM RZ 42PX30 C SKD 303 4980V01205B SUPPORTER ASSY AL FILTER RIGHT RZ 42PX30 C SKD 304 4980V01206B SUPPORTER ASSY AL FILTER LEFT RZ 42PX30 C SKD 400 3809V00605B BACK COVER ASSEMBLY 42PX17 30 CHASSIS CHANGE C SKD 401 3301V00085A PLATE ASSEMBLY ASSY 3300V00552A RZ 42PX30 PLATE TUNER COVER 410 498...

Page 28: ...A 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD200009AF 0DD200009AF 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DD184009AA 0DS113379BA 0DD226239AA 0DD226239AA 0DD226239AA 0DD226239AA 0DR050008AA 0DR050008AA 0DR050008AA CHIP 2SC3875S ALY KEC CHIP 2SA1504S ASY KEC CHIP 2...

Page 29: ...O PART NO DESCRIPTION C1135 C1136 C1137 C1138 C1148 C1154 C117 C118 C1185 C119 C1199 C120 C1200 C1201 C121 C1225 C1230 C1231 C1245 C1247 C129 C130 C130 C131 C1311 C1312 C1314 C1315 C1316 C1317 C1318 C135 C1406 C1414 C1415 C1419 C1420 C1424 C1425 C1428 C1438 C1441 C1506 C204 C210 C211 C214 C215 C221 C238 C241 C300 0CE107SF6DC 0CE107SF6DC 0CE107SF6DC 0CE107SF6DC 0CE476SF6DC 0CE476SF6DC 0CE227SF6DC 0...

Page 30: ...6V 20 SMD R TP 22UF MVG 16V 20 SMD R TP 22UF MVG 16V 20 SMD R TP 22UF MVG 16V 20 SMD R TP LOCA NO PART NO DESCRIPTION C904 C905 C930 C950 L1000 L1101 L1102 L1103 L1104 L404 L405 L406 L407 AR1200 AR1201 AR1202 AR1203 AR1204 AR1205 AR806 AR807 AR808 AR809 AR810 AR811 AR812 AR813 AR814 AR815 AR816 AR817 R230 D1003 D1103 LD101 SW101 SW102 SW103 SW104 SW105 SW106 SW107 SW108 SW800 0CE226SF6DC 0CE226SF6...

Page 31: ... MLB 321611 0500P N2 MAG LAYERS MLB 321611 0500P N2 MAG LAYERS BK2125 HS 750 2X1 25X0 85MM R TP BK2125 HS 750 2X1 25X0 85MM R TP BK2125 HS 750 2X1 25X0 85MM R TP BK2125 HS 750 2X1 25X0 85MM R TP LOCA NO PART NO DESCRIPTION L126 L202 L203 L204 L300 L301 L302 L400 L401 L402 L403 L408 L408 L409 L409 L410 L500 L502 L503 L506 L604 X1200 X300 X400 X800 JK100 JK101 JK101 JK102 JK103 JK104 JK1200 JK400 JK...

Page 32: ......

Page 33: ......

Page 34: ......

Page 35: ...PRINTED CIRCUIT BOARD MAIN TOP MAIN BOTTOM SIDE A V CONTROL ...

Page 36: ...Mar 2005 Printed in Korea P NO 3828VD0209N ...

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