Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Plasma PDP4294 tv_lcd_aoc_pdp4294lv1

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tv_lcd_aoc_pdp4294lv1


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SERVICE MANUAL

        Model:

                                PDP4294LV1




Safety Precaution
Technical Specifications
Block Diagram
Circuit Diagram
Basic Operations & Circuit Description
Main IC Specifications
Product Specification of PDP Module
Trouble Shooting Manual of PDP Module
Spare Part List
Exploded View
If you forget your V-Chip Password
Software Upgrade




            This manual is the latest at the time of printing, and does not
            include the modification which may be made after the printing,
            by the constant improvement of product.
Safety Precaution
                                                            The lightning flash with arrowhead symbol,
                                                            within an equilateral triangle, is intended to
                        CAUTION                             alert the user to the presence of uninsulated
                                                            "dangerous voltage" within the product's enclo
                RISK OF ELECTRIC SHOCK                      sure that may be of sufficient magnitude to
                     DO NOT OPEN                            constitute a risk of electric shock to persons.

   CAUTION: TO REDUCE THE RISK OF                           The exclamation point within an equilateral
   ELECTRIC SHOCK, DO NOT REMOVE COVER                      triangle is intended to alert the user to the
   (OR BACK). NO USER-SERVICEABLE PARTS                     presence of important operating and
   INSIDE. REFER SERVICING TO QUALIFIED                     maintenance (servicing) instructions in the
   SERVICE PERSONNEL ONLY.                                  literature accompanying the appliance.


      PRECAUTIONS DURING                                MAKE YOUR CONTRIBUTION
          SERVICING                                        TO PROTECT THE
1. In addition to safety, other parts and                    ENVIRONMENT
   assemblies are specified for conformance with         Used batteries with the ISO symbol
   such regulations as those applying to spurious
   radiation. These must also be replaced only        for recycling as well as small accumulators
   with specified replacements.                       (rechargeable batteries), mini-batteries (cells) and
   Examples: RF converters, tuner units, antenna      starter batteries should not be thrown into the
   selection switches, RF cables, noise-blocking      garbage can.
   capacitors, noise-blocking filters, etc.              Please leave them at an appropriate depot.
2. Use specified internal Wiring. Note especially:
                                                      WARNING:
   1) Wires covered with PVC tubing
   2) Double insulated wires
                                                         Before servicing this TV receiver, read the
   3) High voltage leads
                                                         SAFETY INSTRUCTION and PRODUCT
3. Use specified insulating materials for hazardous
                                                         SAFETY NOTICE.
   live parts. Note especially:
   1) Insulating Tape
   2) PVC tubing
                                                              SAFETY INSTRUCTION
                                                         The service should not be attempted by anyone
   3) Spacers (insulating barriers)
                                                      unfamiliar with the necessary instructions on this
   4) Insulating sheets for transistors
                                                      apparatus. The following are the necessary
   5) Plastic screws for fixing micro switches
                                                      instructions to be observed before servicing.
4. When replacing AC primary side components
                                                      1. An isolation transformer should be connected in
   (transformers, power cords, noise blocking
                                                         the power line between the receiver and the
   capacitors, etc.), wrap ends of wires securely
                                                         AC line when a service is performed on the
   about the terminals before soldering.
                                                         primary of the converter transformer of the set.
                                                      2. Comply with all caution and safety related
                                                         provided on the back of the cabinet, inside the
                                                         cabinet, on the chassis or picture tube.
                                                      3. To avoid a shock hazard, always discharge the
5. Make sure that wires do not contact heat
                                                         picture tube's anode to the chassis ground
   generating parts (heat sinks, oxide metal film
                                                         before removing the anode cap.
   resistors, fusible resistors, etc.)
                                                      4. Completely discharge the high potential voltage
6. Check if replaced wires do not contact sharply
                                                         of the picture tube before handling. The picture
   edged or pointed parts.
                                                         tube is a vacuum and if broken, the glass will
7. Make sure that foreign objects (screws, solder
                                                         explode.
   droplets, etc.) do not remain inside the set.
5. When replacing a MAIN PCB in the cabinet,               PRODUCT SAFETY NOTICE
   always be certain that all protective are
   installed properly such as control knobs,                   Many electrical and mechanical parts in this
   adjustment covers or shields, barriers, isolation   apparatus have special safety-related
   resistor networks etc.                              characteristics.
6. When servicing is required, observe the original       These characteristics are offer passed
   lead dressing. Extra precaution should be given     unnoticed by visual spection and the protection
   to assure correct lead dressing in the high         afforded by them cannot necessarily be obtained
   voltage area.                                       by using replacement components rates for a
7. Keep wires away from high voltage or high           higher voltage, wattage, etc.
   tempera ture components.                                The replacement parts which have these
8. Before returning the set to the customer,           special safety characteristics are identified by
   always perform an AC leakage current check          marks on the schematic diagram and on the parts
   on the exposed metallic parts of the cabinet,       list.
   such as antennas, terminals, screwheads,metal               Before replacing any of these components,
   overlay, control shafts, etc., to be sure the set   read the parts list in this manual carefully. The
   is safe to operate without danger of electrical     use of substitute replacement parts which do not
   shock. Plug the AC line cord directly to the        have the same safety characteristics as specified
   AC outlet (do not use a line isolation              in the parts list may create shock, fire, or other
   transformer during this check). Use an AC           hazards.
   voltmeter having 5K ohms volt sensitivity or        9. Must be sure that the ground wire of the AC
   more in the following manner.                       inlet is connected with the ground of the
   Connect a 1.5K ohm 10 watt resistor paralleled      apparatus properly.
   by a 0.15



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