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LG 50PM1M Service Manual

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PLASMA MONITOR

SERVICE MANUAL

CHASSIS : RF-052A
MODEL : 50PM1M/MA/MB
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
50PM1M/MA/MB-TA
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  Summary of Contents for LG 50PM1M

  • Page 1: Plasma Monitor

    PLASMA MONITOR SERVICE MANUAL CHASSIS : RF-052A MODEL : 50PM1M/MA/MB 50PM1M/MA/MB-TA 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 ....................9 ADJUSTMENT INSTRUCTIONS ...............11 TROUBLE SHOOTING GUIDE ................16 PRINTED CIRCUIT BOARD ................25 BLOCK DIAGRAM .....................27 EXPLODED VIEW ....................30 EXPLODED VIEW PARTS LIST ................31 REPLACEMENT PARTS LIST................32 SCHEMATIC DIAGRAM..................- 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 MUTE POWER MUTE POWER switches the sound on or off. switches the set on from standby or off to standby. INPUT MULTIMEDIA I/II MULTIMEDIA selects the Component, RGB or I/II (option) HDMI modes. selects the language during dual lan- LIST/ MENU guage broadcast.
  • Page 5 <Front Panel Controls> 42PM1MA/J series / 50PM1MA/J series ON/OFF 1. Main Power Button Selects a menu option. 2. Remote Control Sensor (Volume Up/Down) Increases/decreases sound level. 3. Power Standby Indicator Adjusts menu settings. Illuminates red in standby mode, Illuminates green when the set is turned on 4.
  • Page 6: Back Panel

    <Back Panel> AUDIO COMPONENT INPUT 2 MONITOR OUPUT REMOTE RGB OUTPUT CONTROL COMPONENT INPUT 1 A/V INPUT AC INPUT (MONO) (MONO) RS-232C INPUT HDMI/DVI EXTERNAL SPEAKER AUDIO INPUT RGB INPUT VARIABLE AUDIO OUT (CONTROL/SERVICE) (VIDEO) INPUT VIDEO AUDIO Antenna AUDIO VIDEO S-VIDEO AUDIO...
  • Page 7: Specifications

    <Back Panel> RCA Type AUDIO COMPONENT INPUT 2 MONITOR OUPUT REMOTE RGB OUTPUT CONTROL COMPONENT INPUT 1 A/V INPUT AC INPUT (MONO) (MONO) RS-232C INPUT HDMI/DVI EXTERNAL SPEAKER VARIABLE AUDIO OUT AUDIO INPUT RGB INPUT (VIDEO) INPUT (CONTROL/SERVICE) VIDEO AUDIO Antenna AUDIO VIDEO...
  • Page 8 Accessories MUTE POWER INPUT MULTIMEDIA I/II LIST/ MENU SPLIT ZOOM TEXT/ SLEEP REVEAL MODE SIZE UPDATE Q.VIEW TIME HOLD INDEX Owner’s Manual Remote Control handset 1.5V Alkaline batteries Power Cord Optional Extras Optional extras can be changed or modified for quality improvement without any notification new optional extras can be added.
  • Page 9: Specifications

    SPECIFICATIONS NOTE : Specifications and others are subject to change without notice for improvement. Application Range This spec is applied to the PDP TV used RF-052A Chassis. Specification Each part is tested as below without special appointment. 1) Temperature : 25±5°C (77±9°F), CST : 40±5 2) Relative Humidity: 65 ±...
  • Page 10 RGB Input RGB-PC, RGB-DTV RGB Output RGB-PC, RGB-DTV HDMI Input(1EA) HDMI-PC, HDMI-DTV Audio Input(5EA) PC Audio, Component(2EA), 42PM1M, 42PM1MA, 50PM1M, 50PM1MA AV(1EA), S-audio(1EA) 42PM3MV, 42PM3MVA Audio Input(1EA) PC Audio 42PM1MB, 50PM1MB, 42PM3MVB Audio Output(3EA) AV(1EA), External audio out(1EA), 42PM1M, 42PM1MA, 50PM1M, 50PM1MA,...
  • Page 11: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 3-2. Channel memory Method 1) Select “PDP” and “Hurricane” on Model dialog. And check These instructions is applied all of the PDP TV, RF-052A your connection in Communication dialog. (If your Chassis. connection is ‘NG’, then set your PORT(COM1,2,3,...) correctly.) 2.
  • Page 12: Adjustment Method

    5-2. Setting of device Each PCB assembly must be checked by check JIG set. (Because power PCB Assembly damages to PDP Module, especially be careful) 4. POWER PCB Assy Voltage Adjustments (Va, Vs Voltage Adjustments) 4-1. Test Equipment : D.M.M. 1EA (Fig.
  • Page 13: Required Equipment

    7. Adjustment of White Balance 7-1. Required Equipment 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. Connecting diagram of equipment for measuring (For Auto Adjustment) COLOR ANALYZER 216 Level (85 IRE)
  • Page 14 6) Stick sensor to center of the screen and select each items (Red/Green/Blue Gain and offset) using (CH +/-) key on R/C. 7) Adjust Only High Light with R Gain/ B Gain using (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 Red Gain : 82, Green Gain : 80, Blue Gain : 86 Red Offset : 7D, Green Offset : 7E, Blue Offset : 80)
  • Page 15 10. Default value in adjustment mode 10-1. 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. 11) Default Value on OSD 10-2.
  • Page 16: 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 17 1-2. Sony Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 17 -...
  • Page 18 1-3. Sanken, LGIT Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 18 -...
  • Page 19: No Power

    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. Board Cable connected? Is the Fuse(F101) on Replace the Fuse.
  • Page 20: Protect Mode

    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 is red from green. (2) Check following Is the Power Board Is output the normality Low/High Replace Power...
  • Page 21 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? Power Board.
  • Page 22 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 Replace the cable.
  • Page 23 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. Ø...
  • Page 24 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. Is the RF/ AV/ Does IC400 Does IC401...
  • Page 25: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN(TOP) MAIN(BOTTOM) - 25 -...
  • Page 26 RCA(TOP) RCA(BOTTOM) CONTROL POWER SWITCH(TOP) POWER SWITCH(BOTTOM) - 26 -...
  • Page 27: Block Diagram

    BLOCK DIAGRAM - 27 -...
  • Page 28 - 28 -...
  • Page 29 MEMO - 29 -...
  • Page 30: Exploded View

    EXPLODED VIEW - 30 -...
  • Page 31: Exploded View Parts List

    PWB(PCB) ASSEMBLY,DISPLAY ZSUS ASSY HAND INSERT FOR 50X3 4980900191A SUPPORTER, ASSY ADC MODULE ASSY RIGHT 50PM1M 4980900191B SUPPORTER, ASSY ADC SKD MODULE ASSY RIGHT 50PM1M 4980900192A SUPPORTER, ASSY ADC MODULE ASSY LEFT 50PM1M 4980900192B SUPPORTER, ASSY ADC SKD MODULE ASSY LEFT 50PM1M...
  • Page 32: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1200 0TR387500AA CHIP 2SC3875S(ALY) BK KEC Q1401 0TR387500AA CHIP 2SC3875S(ALY) BK KEC IC1000 0IPRPML001A MIC39100 MICREL 3P SOT223 R/TP Q1402 0TR387500AA CHIP 2SC3875S(ALY) BK KEC IC1001 0IMCRRH001A BA033FP-E2 ROHM 3P-SOP,TO252-3 R/TP 3.3V Q201 0TR387500AA...
  • 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 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 35 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 36 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L501 6210VC0005A BK2125 HS 750 2X1.25X0.85MM R/TP L502 6200JB8010L MLB-201209-1000L-N2 R/TP 1000OHM 6200JB8010L L503 MLB-201209-1000L-N2 R/TP 1000OHM L506 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM L514 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM L515 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM L516...
  • Page 41 Apr., 2006 P/NO : 3828VD0223T Printed in Korea...

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50pm1mb-ta50pm1mb50pm1ma50pm1ma-za