LG 50PY2R Service Manual
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LG 50PY2R Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : MF-056B
MODEL : 50PY2R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
50PY2R-ZB
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 50PY2R

  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : MF-056B MODEL : 50PY2R 50PY2R-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ..................3 DESCRIPTION OF CONTROLS ................4 SPECIFICATIONS ....................8 ADJUSTMENT INSTRUCTIONS ...............10 TROUBLE SHOOTING GUIDE ................15 BLOCK DIAGRAM .....................25 EXPLODED VIEW ....................26 EXPLODED VIEW PARTS LIST ................27 REPLACEMENT PARTS LIST................28 SCHEMATIC DIAGRAM..................PRINTED CIRCUIT BOARD .................. - 2 -...

  • Page 3: Safety Precautions

    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

    DESCRIPTION OF CONTROLS INPUT POWER Selects the TV, AV1, AV2, S-Video2, AV3, switches the set on from standby or off to AV4, AV5, Component, RGB or HDMI modes. standby. switches the set on from standby. MULTIMEDIA INPUT MULTIMEDIA Selects the Component, RGB or HDMI MODE POWER modes.
  • Page 5 <Front Panel Controls> INPUT 1. Remote Control Sensor (Programme Up/Down) Selects a programme or a menu item. 2. Power Button Switches the set on from standby. Switches the set on from standby or off to standby. (Volume Up/Down) Adjusts the volume. 3.
  • Page 6 <Back Panel> A/V INPUT2 A/V INPUT2 S-VIDEO VIDEO VIDEO AUDIO AUDIO A A V1 AC INPUT HDMI/ AUDIO AUDIO Antenna COMPONENT COMPONENT AUDIO INPUT RGB INPUT DVI(VIDEO) A A V2 V VARIABLE ARIABLE AUDIO OUT AUDIO OUT RS-232C INPUT REMOTE CONTROL (CONTROL/SERVICE) A A V4...
  • Page 7 4-TV bracket bolts (Only 50PY2R series: After removing the existing bolts, insert the and tighten securely, in the holes on the bracket.) Install the wall brackets on the wall with bolts, (not supplied with the product), as shown.

  • Page 8: Specifications

    50 inch wide Color Display Module Aspect Ratio 16:9 PDP Module PDP50X2A, RGB Closed Type 45% Total light transmittance (E-Mesh) Maker : NBK/ Mitsui/ LG Chemical Operating Environment 1) Temp : 0~40 deg LGE SPEC 2) Humidity : 0~85% Storage Environment...
  • Page 9 2. Model Specification Item Specification Remark Market Broadcasting system PAL B/G/I/D/K, NTSC Available Channel BAND NTSC VHF/UHF C1~C69 2~83 CATV S1~S47 1~71 Receiving system Upper Heterodyne SCART Jack (3EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60 Video Input (2EA) PAL, SECAM, NTSC 5 System : PAL, SECAM, NTSC,PAL60 S-Video Input (3EA)

  • Page 10: Adjustment Instructions

    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 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 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 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 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 (Fig. 12) Default Value on OSD 9-2.

  • Page 15: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE 1. Power Board 1-1. The whole flowchart which it follows in voltage output state Start check Is it identical Doesn't the Is the Interface screen whole come with Power Off signal operated? out? condition? 1. Check the Power Off 2.
  • Page 16 1-2. Sony Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 16 -...
  • Page 17 1-3. Sanken, LGIT Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 17 -...
  • Page 18 2. No Power (1) Symptom Does’t minute discharge at module. ¯ Non does not come in into the front LED. ¯ (2) Check following Is plug in power cord? Plug in power cord. Is the Line Filter and Power Connect the Cable. Board Cable connected? Is the Fuse(F101) on Replace the Fuse.
  • Page 19 3. Protect Mode (1) Symptom After once shining, it does not discharge minutely ¯ from module The Rely falls(The sound is audible “click”) ¯ It is converted with the color where the front LED ¯ is red from green. (2) Check following Is the Power Board Is output the normality Low/High Replace Power...
  • Page 20 4. No Raster (1) Symptom Does’t minute discharge at module. ¯ It maintains the condition where the front LED is green. ¯ (2) Check following Is the Power Board Is output the normality Low/High Replace the normal? voltage except Stand-by 5V? Power Board.
  • Page 21 5. In case of occurring strange screen into specific mode 5-1. In case the OSD does not displayed (1) Symptom LED is green ¯ The minute discharged continuously becomes ¯ accomplished from module (2) Check following Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 22 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 ¯ (RF, AV, Component, RGB, DVI). (2) Check following Check the all input mode should become normality display. ¯...
  • Page 23 6. In case of no sound (1) Symptom LED is green ¯ Screen display but sound is not output ¯ (2) Check following Is the SPK cable Is the SPK cable Replace SPK cable normal? connected well? Cable inserts well. Is the RF/ AV/ Does IC400 Does IC401...
  • Page 24 7. In case of no normal XSTUDIO (1) Symptom LED is green ¯ Don’t enter EPF mode ¯ Screen display but sound is not output ¯ (2) Check following Is the EPF cable Is the EPF cable Replace EPF cable normal? connected well? Cable inserts well.

  • Page 25: Block Diagram

    BLOCK DIAGRAM - 25 -...

  • Page 26: Exploded View

    EXPLODED VIEW - 26 -...

  • Page 27: Exploded View Parts List

    BACK COVER ASSEMBLY, ASSY,50PY2DR INNER&OUTER C/SKD 3300V00442D PLATE, B/COVER AL NON DI-50PY21 PRESS 3301V00058B PLATE ASSEMBLY, ASSY REAR DECO,3300V00462 50PY2D C/SKD 3501V00218B BOARD ASSEMBLY, ASSY SWIVEL,50PY2R-ZB MF056B FOR WITHOUT PACKING C/SKD 3301V00052E PLATE ASSEMBLY, ASSY 3300V00441C(PRESS) RT-50PY21 3301V00050F PLATE ASSEMBLY, REAR 3300V00451D(PRESS) 50PY2R-ZB 68719MM991A PWB(PCB) ASSEMBLY,MAIN M.I MF056B 50PY2R-ZB .

  • Page 28: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION TRANSISTOR IC100 0ILNR00015A NSP-2100A,LF NEOFIDELITY TQFP 64P R/TP IC1202 0TR830009BA BSS83 PHILIPS N-CHANNEL S/W TR IC1000 0IPRPML001A MIC39100 3P SOT223 R/LDO TYPE 2.5V IC1203 0TR830009BA BSS83 PHILIPS N-CHANNEL S/W TR 0IMCRRH001A IC1001 BA033FP-E2 3P-SOP,TO252-3 R/3.3V...
  • Page 29 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 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 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 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 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 34 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L1128 6200J000013 MLB-321611-0500P-N2 R/500 OHM BEAD JK101 6612J00043C UPJ-R1-031 S/T,SCART,SHIELD,SPRING L1129 6200J000013 MLB-321611-0500P-N2 R/500 OHM BEAD JK102 6613V00026A UJB-03-28A 6613V00004S+SHIEL+SCREW 6210VC0006A 6612J00043C L113 FBMH3216 HM501NT 3.2X1.6X1.6MM R/TP JK102 UPJ-R1-031 S/T,SCART,SHIELD,SPRING L114 6200JB8010L MLB-201209-1000L-N2 R/1000OHM 350MA...
  • Page 38 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM) EPF (TOP) EPF (BOTTOM) SIDE A/V SPEAKER(TOP) SPEAKER(BOTTOM) CONTROL...
  • Page 39 Aug., 2005 P/NO : 3828VD0209W Printed in Korea...

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