Akai P42L6A-T1 Service Manual

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Service Manual

Model: P42L6A-T1

Specifications & Design are subject to change without notice.

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Contents

1. Contents……………………………………………………………...1

2. Features……………………………………………………………...2

3. Safety Precautions………………………………………................3

4. Photo of PDP taking apart…………………………….……………6

5. PANEL Part…………………………………………………………..8 a. Adjustment……………………………………………………….8 b. Trouble Shooting………………………………………………10 c. Power specification……………………………………………20

6. Introduction to PDP circuit boards………………………………..23

a: Signal flow-chart………………………………………………23

b: CHIP SUMMARY……………………………………………..24 c: Debug flow-chart………………………………………………25

7. Circuit Drawing……………………………………………………..26

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1. Features

The 42” PDP provides quality image displays and is suitable for a variety of multimedia applications. a. Available Input signals:

 The Digital module provides RGB (D-SUB15 PIN) and digital DVI input

connectors, and component video (RCA) input connectors. It supports the quality input image of DVD and HDTV (480P/720P/1080i/1080P).

 The analogue module provides composite video (RCA), S-video

(DIN4P), The analogue module also provides one set of stereo audio input connectors (RCA).

 The product supports PC image resolutions up to XGA (1024х768)

with a vertical frequency of 75HZ.

 RF terminal,you can watch TV expediently,The format contain

PAL-M/N,NTSC-M

b. General specification

 Model name: P42L6A-T1(H)

 Number of pixel:1024(H)×768(V) (1Pixel=3RGB Cells)

 Display area : 920.1(H) x 518.4(V)±0.5mm  Color arrangement : RGB Closed type  Number of COLRO : (R)1024 x (G)1024 x (B)1024  Aspect Ratio : 16:9  Peak Brightness : Typical 1200dc/　(1/100 White Window)  Contrast Ratio : Typical 10000:1(Dark room 1/100 White Window)

(White Window Pattern at Center)

 POWER CONSUMPTION : Typical 320 W(Full White)  Available voltage range:AC110V~240V  Frequency range:50~60HZ(±3HZ)

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2. Safety Precautions

When servicing of PDP Module, it should be not enforced into another way aside next rule, or a unaccustomed person should not repairing. When using/handling this PDP Module, pay attention to the below warning and cautions.

Warning

Indicates a hazard that may lead to death or injury if the warning is ignored and the product is handled incorrectly.

Caution

Indicates a hazard that can lead to injury or damage to property if the caution is ignored and the product is handled incorrectly.

1) WARNING

(1) Do not touch Signal and Power Connector while this product operates. Do not touch EMI ground part and Heat Sink of Film Filter. (2) Do not supply a voltage higher than that specified to this product. This may damage the product and may cause a fire. (3) Do not use this product in locations where the humidity is extremely high, where it may be splashed with water, or where flammable materials surround it. Do not install or use the product in a location that does no satisfy the specified environmental conditions. This may damage the product and may cause a fire. (4) If a foreign substance (such as water, metal, or liquid) gets inside the product, immediately turn off the power. Continuing to use the product, it is may cause fire or electric shock. (5) If the product emits smoke, and abnormal smell, or makes an abnormal sound, immediately turn off the power. Continuing to use the product, it may cause fire or electric shock. (6) Do not disconnect or connect the connector while power to the product is on. It takes some time for the voltage to drop to a sufficiently low level after the power has been turned off. Confirm that the voltage has dropped to a safe level before disconnecting or connecting the connector. (7) Do not pull out or insert the power cable from/to an outlet with wet hands. It may cause electric shock. (8) Do not damage or modify the power cable. It may cause fire or electric shock. (9) If the power cable is damaged, or if the connector is loose, do not use the product: otherwise, this can lead to fire or electric shock. (10) If the power connector or the connector of the power cable becomes dirty or dusty, wipe it with a dry cloth.0therwise, this can lead to fire. (11) PDP Module uses a high voltage (Max.450V dc). Keep the cautions concerning electric shock and do not touch the Device circuitry when handling the PDP Unit. And because the capacitor of the Device circuitry may remain

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charged at the moment of Power OFF, standing by for 1 minute is required in order to touch the Device circuitry.

2) CAUTIONS

(1) Do not place this product in a location that is subject to heavy vibration, or on an unstable surface such as an inclined surface. The product may fall off or fall over causing injuries. (2) Before disconnecting cable from the product, be sure to turn off the power. Be sure to hold the connector when disconnecting cables. Pulling a cable with excessive force may cause the core of the cable to be exposed or break the cable, and this can lead to fire or electric shock. (3) This product should be moved by two or more persons. If one person attempts to carry this product alone, he/she may be injured. (4) This product contains glass. The glass may break, causing injuries, if shock, vibration, heat, or distortion is applied to the product. (5) The temperature of the glass of the display may rise to 80°C or more depending on the conditions of use If you touch the glass inadvertently, you may be burned. (6) If glass surface of the display breaks or is scratched, do not touch the broken pieces or the scratches with bare hands. You may be injured. (7) PDP Module requires to be handled with care not to be touched with metal or hard materials, and must not be stressed by heat or mechanical impact. (8) There are some exposed components on the rear panel of this product. Touching these components may cause an electric shock. (9) When moving the product, be sure to turn off the power and disconnect all the cables. While moving the product, watch your step. The product may be dropped or all leading to injuries of electric shock. (10) In order to protect static electricity due to C-MOS circuitry of the Drive part, wear a wrist band to protect static electricity when handling. (11) If cleaning the Panel, wipe it with a soft cloth moistened with water or a neutral detergent and squeezed, being careful not to touch the connector part of the Panel. And don’t use chemical materials like thinner or benzene. (12) If this product is used as a display board to display a static image, “image sticking” occurs. This means that the luminance of areas of the display that remain lit for a long time drops compared with luminance of areas that are lit for a shorter time, causing uneven luminance across the display The degree to which this occurs is in proportion to the luminance at which the display is used. To prevent this phenomenon, therefore, avoid static images as much as possible and design your system so that it is used at a low luminance, by reducing signal level difference between bright area and less bright area through signal processing. (13) Because PDP Module emits heat from the Glass Panel part and the Drive circuitry, the environmental temperature must not be over 40°C. The temperature of the Glass Panel part is especially high owing to heat from

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internal Drive circuitry. And because the PDP Module is driven by high voltage, it must avoid conductive materials. (14) If inserting components or circuit board in order to repair, be sure to fix a lead line to the connector before soldering. (15) If inserting high-power resistor (metal-oxide film resistor or metal film resistor) in order to repair, insert it as 10mm away as from a board. (16) During repairs, high voltage or high temperature components must be put away from a lead line. (17) This is a Cold Chassis but you had better use a cold transformer for safety during repairs. If repairing electricity source part, you must use the cold transformer. (18) Do not place an object on the glass surface of the display. The glass may break or be scratched. (19) This product may be damaged if it is subject to excessive stresses (such as excessive voltage, current, or temperature). The absolute maximum ratings specify the limits of these stresses. (20) The recommended operating conditions are conditions in which the normal operation of this product is guaranteed. All the rated values of the electrical specifications are guaranteed within these conditions. Always use the product within the range of the recommended operating conditions. Otherwise, the reliability of the product may be degraded. (21) This product has a glass display surface. Design your system so that excessive shock and load are not applied to the glass. Exercise care that the vent at the corner of the glass panel is not damaged If the glass panel or vent is damaged, the product is inoperable. (22) Do not cover or wrap the product with a cloth or other covering while power is supplied to the product. (23) Before turning on power to the product, check the wiring of the product and confirm that the supply voltage is within the rated voltage range. If the wiring is wrong or if a voltage outside the rated range is applied, the product may malfunction or be damaged. (24) Do not store this product in a location where temperature and humidity are high. This may cause the product to malfunction. Because this product uses a discharge phenomenon, it may take time to light (operation may be delayed) when the product is used after it has been stored for a long time. In this case, it is recommended to light all cells for about 2 hours (aging). (25) This product is made from various materials such as glass metal, and plastic. When discarding it, be sure to contact a professional waste disposal operator. (26) If faults occur due to arbitrary modification or disassembly, HAIER is not responsible for function, quality or other items. (27) Use of the product with a combination of parameters conditions or logic not specified in the specifications of this product is not guaranteed. If intending to use the product in such a way, be sure to consult HAIER in advance.

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3.Photo of PDP taking apart

The introduction of circuit board at Back board:

NAME MATERIAL CODE MODEL (PDP 42X3) 0094014444 X-SUS(left) 0094014670 X-SUS(right) 0094014671 Y-SUS 0094014672 Y-DRIVER 0094014673 Z-SUS 0094014674 CTROL BOARD 0094014675 PSU 0094014676

Y-SUS

PSU

Z-SUS

Y-DRIVER(TOP)

Y-DRIVER(BTM)

X-SUS(left)

CTROL BOARD

X-SUS(right)