Documents

SM_LG 42PX2RVA Chassis MF056C Plasma TV SM.pdf

Description
PLASMA TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : MF-056C MODEL : 42PX2RVA 42PX2RVA-ZC website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html - 2 - CONTENTS SAFETY PRECAUTIONS ...................................................................................3 DESCRIPTION OF CONTROLS .........................................................................4 SPECIFICATIONS ..............................
Categories
Published
of 35
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Related Documents
Share
Transcript
  PLASMA TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS,READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : MF-056C MODEL : 42PX2RVA 42PX2RVA-ZC website:http://biz.LGservice.come-mail:http://www.LGEservice.com/techsup.html  - 2- CONTENTS SAFETY PRECAUTIONS ...................................................................................3DESCRIPTION OF CONTROLS .........................................................................4SPECIFICATIONS ...............................................................................................8ADJUSTMENT INSTRUCTIONS ......................................................................10TROUBLE SHOOTING GUIDE..........................................................................14BLOCK DIAGRAM.............................................................................................23EXPLODED VIEW..............................................................................................24EXPLODED VIEW PARTS LIST........................................................................25REPLACEMENT PARTS LIST...........................................................................26SCHEMATIC DIAGRAM ........................................................................................PRINTED CIRCUIT BOARD..................................................................................  - 3- SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by inthe 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 toprevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the srcinal design without permission of manufacturer. General Guidance An isolation Transformer should always be used duringthe servicing of a receiver whose chassis is not isolated fromthe AC power line. Use a transformer of adequate power ratingas this protects the technician from accidents resulting inpersonal injury from electrical shocks.It will also protect the receiver and it's components from beingdamaged by accidental shorts of the circuitry that may beinadvertently introduced during the service operation.If any fuse (or Fusible Resistor) in this monitor is blown, replaceit with the specified.When replacing a high wattage resistor (Oxide Metal FilmResistor, over 1W), keep the resistor 10mm away from PCB.Keep wires away from high voltage or high temperature parts.Due to high vacuum and large surface area of picture tube,extreme care should be used in handling the Picture Tube .Do not lift the Picture tube by it's Neck. Leakage Current Cold Check(Antenna Cold Check) 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 ofohm-meter to the AC plug prongs tied together and touch otherohm-meter lead in turn to each exposed metallic parts such asantenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, themeasured resistance should be between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis thereading must be infinite.An other abnormality exists that must be corrected before thereceiver is returned to the customer. Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet. Do not use a line Isolation Transformer during this check. Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitorbetween a known good earth ground (Water Pipe, Conduit, etc.)and the exposed metallic parts.Measure the AC voltage across the resistor using ACvoltmeter with 1000 ohms/volt or more sensitivity.Reverse plug the AC cord into the AC outlet and repeat ACvoltage measurements for each exposed metallic part. Anyvoltage measured must not exceed 0.75 volt RMS which iscorresponds to 0.5mA.In case any measurement is out of the limits specified, there ispossibility of shock hazard and the set must be checked andrepaired before it is returned to the customer. Leakage Current Hot Check circuit 1.5 Kohm/10W To Instrument'sexposed METALLIC PARTSGood Earth Groundsuch as WATER PIPE,CONDUIT etc. AC Volt-meter IMPORTANT SAFETY NOTICE 0.15uF  -When using the remote control aim it at the remote control sensor of the set.-There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature. POWERMUTE TV/AVI/IILISTPRPRVOL OK123456789 PSM SSM 0 VOLARCMENUQ.VIEWTEXTSLEEPTIMEMIXHOLD REVEAL INDEXMODE ?i M MULTIMEDIA SIZE UPDATE MULTIMEDIA Selects the Component, RGB or HDMI modes.switches the set on from standby. POWER switches the set on from standby oroff to standby. ARC Changes the picture format. MENU Displays on screen menus one byone. Exits the current menu.Memorizes menu changes. Q.VIEW Returns to the previously viewed pro-gramme. Note :  This function works 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 toyour viewing programme character. NUMBER buttonsSLEEP 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’section. COLOURED BUTTONS These buttons are used for teletext (onlyTELETEXTmodels) or programme edit. LIST Displays the programme table. TV/AV Selects the TV, AV, Component, RGBor HDMI modes.switches the set on from standby. MUTE Switches the sound on or off. D / E (Programme Up/Down) selects a programme or a menu item.switches the set on from standby. F / G (Volume Up/Down) adjusts the volume.adjusts menu settings. OK accepts your selection or displays thecurrent mode. PSM Adjusts the factory preset pictureaccording to the room. - 4- DESCRIPTION OF CONTROLS
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks