LG 42PX5R Service Manual
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LG 42PX5R Service Manual

LG 42PX5R Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : MF-056B
MODEL : 42PX5R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
42PX5R-ZB
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  • Page 1 All manuals and user guides at all-guides.com website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html PLASMA TV SERVICE MANUAL CHASSIS : MF-056B MODEL : 42PX5R 42PX5R-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com CONTENTS SAFETY PRECAUTIONS ....................3 DESCRIPTION OF CONTROLS ..................4 SPECIFICATIONS......................9 ADJUSTMENT INSTRUCTIONS ................11 TROUBLE SHOOTING GUIDE..................16 BLOCK DIAGRAM......................24 EXPLODED VIEW ......................26 EXPLODED VIEW PARTS LIST ................27 REPLACEMENT PARTS LIST ..................28 SCHEMATIC DIAGRAM ....................PRINTED CIRCUIT BOARD ..................... - 2 -...

  • Page 3: Safety Precautions

    All manuals and user guides at all-guides.com SAFETY PRECAUTIONS IMPORT ANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

  • Page 4: Description Of Controls

    All manuals and user guides at all-guides.com DESCRIPTION OF CONTROLS INPUT POWER Selects the TV, AV1, AV2, S-Video, AV3, AV4, switches the set on from standby or off to AV5, Component, RGB or HDMI modes. standby. switches the set on from standby. MULTIMEDIA INPUT MULTIMEDIA...
  • Page 5 All manuals and user guides at all-guides.com <Front Panel Controls> INPUT MENU 1. Remote Control Sensor 7. INDEX Switches FRONT Display on or off. 2. Power Button Switches the set on from standby or off to standby. 8. Power Indicator Illuminates red in standby mode, illuminates green when 3.
  • Page 6 All manuals and user guides at all-guides.com <Back Panel> A A V5 S-VIDEO VIDEO VIDEO AUDIO AUDIO AC INPUT A A V1 HDMI/ COMPONENT COMPONENT AUDIO AUDIO Antenna RGB INPUT AUDIO INPUT DVI(VIDEO) A A V2 V VARIABLE ARIABLE AUDIO OUT AUDIO OUT RS-232C INPUT REMOTE...
  • Page 7 All manuals and user guides at all-guides.com Accessories TV/AV MULTIMEDIA POWER MODE CABLE FAVOURITE Q.VIEW SIZE POSITION INDEX HOLD TIME REVEAL MODE Remote Control handset Owner’s Manual 2-Eye Bolts 1.5V Alkaline batteries Power Cord 2-Wall brackets Joining the set assembly to the wall to prevent the set tumbling - Secure the set assembly by joining it to a wall by using the Eye Bolts/Wall brackets.

  • Page 8: Specifications

    1) Performance : LGE TV test method followed. 2) Demanded other specification Safety: CE, IEC specification EMC : CE, IEC Model Name Market Remark 42PX5R-ZB Safety : IEC/EN60065, EMI : EN55013, EMS : EN55020 General Specification 1. Module Specification Item Specification Remark...
  • Page 9 All manuals and user guides at all-guides.com 2. Model Specification Item Specification Remark Market PAL B/G/I/D/K, NTSC Broadcasting system Available Channel BAND NTSC VHF/UHF C1~C69 2~83 CATV S1~S47 1~71 Receiving system Upper Heterodyne Video Input (2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60 Video Output(1EA) PAL, SECAM, NTSC 5 System : PAL, SECAM, NTSC,PAL60...

  • Page 10: Adjustment Instructions

    All manuals and user guides at all-guides.com ADJUSTMENT INSTRUCTIONS 1. Application Object 3-2. Channel memory Method 1) Select “PDP” and “Hurricane” on Model dialog. And check These instructions apply to the MF-056B Chassis. your connection in Communication dialog. (If your connection is ‘NG’, then set your PORT(COM1,2,3,...) 2.
  • Page 11 All manuals and user guides at all-guides.com 2) Connect RS-232C cable and turn on the power. (Use the special Cable For Sub-program) (If your connection has completed, you can see “Ready”) 3) Select 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 item show ‘OK’...
  • Page 12 All manuals and user guides at all-guides.com 5.4. Sequence of Adjustment 7. Adjustment of White Balance (1) DDC data of Analog-RGB 7-1. Required Equipment 1) Init the data 1) Remote controller for adjustment 2) Color Analyzer (CA-100 or same product) 3) Auto W/B adjustment instrument(only for auto adjustment) 4) AV Pattern Generator 7-2.
  • Page 13 All manuals and user guides at all-guides.com 8-3. Method of Auto Component Color Balance 7) Adjust Only High Light with R Gain/ B Gain using (VOL+/-) key on R/C. 1) Input the Component 720p 100% Color Bar signal into 8) Adjust it until color coordination becomes as below. Component1 or Component2.
  • Page 14 All manuals and user guides at all-guides.com 9. Default Value in Adjustment mode 9-1. Auto Color Balance (Component/RGB) Auto Color Balance(HEX) Auto-RGB To Set Source Cortez Offset1 Green Offset1 Blue Offset1 Offset2 Green Offset2 Blue Offset2 Gain Green Gain Blue Gain Reset To Set...

  • Page 15: Trouble Shooting Guide

    All manuals and user guides at all-guides.com TROUBLE SHOOTING GUIDE 1. Power Board 1-1. The whole flowchart which it follows in voltage output state Start check Doesn't the Is it identical Is the Interface screen whole come with Power Off signal operated? out? condition?
  • Page 16 All manuals and user guides at all-guides.com 1-2. Sony Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 16 -...
  • Page 17 All manuals and user guides at all-guides.com 1-3. Sanken, LGIT Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 17 -...
  • Page 18 All manuals and user guides at all-guides.com 2. No Power (1) Symptom Does’t minute discharge at module. Ø Non does not come in into the front LED. Ø (2) Check following Is plug in power cord? Plug in power cord. Is the Line Filter and Power Connect the Cable.
  • Page 19 All manuals and user guides at all-guides.com 3. Protect Mode (1) Symptom After once shining, it does not discharge minutely Ø from module The Rely falls(The sound is audible “click”) Ø It is converted with the color where the front LED Ø...
  • Page 20 All manuals and user guides at all-guides.com 4. No Raster (1) Symptom Does’t minute discharge at module. Ø It maintains the condition where the front LED is green. Ø (2) Check following Is the Power Board Is output the normality Low/High Replace the normal? voltage except Stand-by 5V?
  • Page 21 All manuals and user guides at all-guides.com 5. In case of occurring strange screen into specific mode 5-1. In case the OSD does not displayed (1) Symptom LED is green Ø The minute discharged continuously becomes Ø accomplished from module (2) Check following Is the LVDS cable Is the LVDS cable...
  • Page 22 All manuals and user guides at all-guides.com 5-2. In case of does’t display the screen into specific mode (1) Symptom The screen does not become the display from specific input mode Ø (RF, AV, Component, RGB, DVI). (2) Check following Check the all input mode should become normality display.
  • Page 23 All manuals and user guides at all-guides.com 6. In case of no sound (1) Symptom LED is green Ø Screen display but sound is not output Ø (2) Check following Is the SPK cable Is the SPK cable Replace SPK cable normal? connected well? Cable inserts well.
  • Page 24 All manuals and user guides at all-guides.com 6. In case of no normal XSTUDIO (1) Symptom LED is green Ø Don’t enter EPF mode Ø Screen display but sound is not output Ø (2) Check following Is the EPF cable Is the EPF cable Replace EPF cable normal?

  • Page 25: Block Diagram

    All manuals and user guides at all-guides.com BLOCK DIAGRAM - 25 -...

  • Page 26: Exploded View

    All manuals and user guides at all-guides.com EXPLODED VIEW - 26 -...

  • Page 27: Exploded View Parts List

    PLATE ASSEMBLY, AV 3301V00053 3301V00054 42PX4RV-TA ASSY 68719MMW35 68719MMW15A PWB(PCB) ASSEMBLY,MAIN M.I MF056B 42PX5R-ZB X3 6871VSMS63A 6871VSMS63A PWB(PCB) ASSEMBLY,SUB CONT T.T MF056B 42PX5R-TB HURRICANE 2 5020V01022B 5020V01022B BUTTON, CONTROL DU-42PX51X ABS, AF-303S 8KEY TITAN GRAY 3141VSNF52A 31419SF046A CHASSIS ASSEMBLY, SUB MF056B 42PX5R-TB EPF...

  • Page 28: Replacement Parts List

    All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC105 0TR830009BA BSS83 TP PHILIPS N-CHANNEL S/W TR IC1202 0TR830009BA BSS83 TP PHILIPS N-CHANNEL S/W TR IC1000 0IPRPML001A MIC39100 3P SOT223 R/TP LDO TYPE 2.5V IC1203 0TR830009BA BSS83 TP PHILIPS N-CHANNEL S/W TR...
  • Page 29 All manuals and user guides at all-guides.com For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 30 All manuals and user guides at all-guides.com For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 31 All manuals and user guides at all-guides.com For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 32 All manuals and user guides at all-guides.com For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 33 All manuals and user guides at all-guides.com LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION SW105 140-315A SKHV17910B 12V 0.05A HORIZONTAL 160G L1122 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM SW106 140-315A SKHV17910B 12V 0.05A HORIZONTAL 160G L1123 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM 140-315A SKHV17910B 12V 0.05A HORIZONTAL 160G 6200J000013...
  • Page 34 All manuals and user guides at all-guides.com LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION X300 166-E02F RESONATOR,CERAMIC CSBLA500KECZF09-B0 X400 156-A02M RESONATOR,CRYSTAL HC49U 18.432MHZ 6212AB2844A RESONATOR,CRYSTAL ABLS-19.6608MHZ X700 RESONATOR,CRYSTAL ABLS-19.6608MHZ X800 6212AB2844A JACK JK100 6612J00043C UPJ-R1-031 UGCOM S/T,SCART,SHIELD,SPRING JK101 6613V00026A UJB-03-28A 6613V00004S+SHIEL+SCREW...
  • Page 35 All manuals and user guides at all-guides.com...
  • Page 36 All manuals and user guides at all-guides.com...
  • Page 37 All manuals and user guides at all-guides.com...
  • Page 38 All manuals and user guides at all-guides.com PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM) EPF (TOP) EPF (BOTTOM) CONTROL (TOP) CONTROL (BOTTOM) LED (TOP) LED (BOTTOM) SIDE A/V...
  • Page 39 All manuals and user guides at all-guides.com Jan., 2006 P/NO : 38289S0052C Printed in Korea...

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