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(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 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,

LG Electronics 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 LGE in advance. 

(28) Within the warranty period, general faults that occur due to

defects in components such as ICs will be rectified by LGE
without charge. However, IMAGE STICKING due to
misapplying the above (12) provision is not included in the
warranty. Repairs due to the other faults may be charged for
depending on responsibility for the faults.

- 3 -

Содержание PDP42V5 Series

Страница 1: ...MANUAL CAUTION 1 BEFORE SERVICING THE PDP MODULE READ THE SAFETY PRECAUTIONS IN THIS MANUAL 2 WHEN REPLACEMENT PARTS ARE REQUIRED BE SURE TO USE REPLACEMENT PARTS SPECIFIED BY THE MANUFACTURER MODEL PDP42V5 Korean English ...

Страница 2: ... is loose do not use the product otherwise this can lead to fire or electric shock 9 If the power connector or the connector of the power cable becomes dirty or dusty wipe it with a dry cloth Otherwise this can lead to fire 10 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 capac...

Страница 3: ...emperature 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 pr...

Страница 4: ... is generated at regular internal on the whole screen 2 7 Data copy is generated to stripe direction 2 8 One or more stripe is generated on the screen 2 9 One or more horizontal line is generated on screen 2 10 Lightness of screen is wholly darken though there is input signal pattern 2 11 Different color is shown partially during full white screen or electric discharge is generated during full bla...

Страница 5: ...A 6871QZH030A PWB PCB ASSY PWB PCB ASSY PWB PCB ASSY PWB PCB ASSY PWB PCB ASSY PWB PCB ASSY PWB PCB ASSY Description TMDS CTRL B D ASSY LVDS CTRL B D ASSY Y DRV UPPER B D ASSY Y DRV LOWER B D ASSY X RIGHT B D ASSY Y SUS B D ASSY Z SUS B D ASSY NO 1 2 3 4 Connector P1 Z SUS B D P5 Y SUS B D P6 Y SUS B D P21 P31 CTRL B D Input Signal 5V Va Vs 5V Vs 5V Video Signal ...

Страница 6: ...the voltage wave form of Vset down 3 Adjusting the voltage wave form of Vramp 3 2 Adjustment after assembling PDP Module adjustment 1 Setting up the initial voltage and adjusting the voltage wave form of Vsetup 2 Measuring the voltage Margin of Vs and deciding the voltage 3 Adjusting and checking the voltage of DC DC pack Vsetup Vscw Ve Vy 4 Adjusting the voltage wave form of Vset down 5 Measuring...

Страница 7: ...right leg of the Y B D and set the Plus terminal to the left leg of R60 to check the Vscw voltage 115 1V and when there is abnormality in voltage turn the variable resistor VR5 of DC DC Pack Vscw on Y B D to adjust Œ Connect the GND terminal of DVM to the R8 s right leg of the Y B D and set the Plus terminal to the left leg of R8 to check the Vy voltage 80 1V and when there is abnormality in volta...

Страница 8: ...nge 180V Vs 195V in consideration of other features Turn the voltage adjusting knob of Vs DC power supply make deciding the Vs voltage ı Adjust Vset down wave form using setting up Vs voltage like mentioned on the 4 3 4 Adjusting the final voltage wave form Check the voltage wave form like the mentioned way on the 4 3 How to adjust and readjust the wave form when it is twisted 5 DC DC Pack Voltage...

Страница 9: ...ower Supply for Va DC Power Supply for Vs Caution 1 The power of the signal generator should be turned on before turning on the power of DC power supply 2 The voltage of DC power supply in standard of Module input voltage should be preset as below Vcc 5V Va 65V Vs 190V 3 The power of power supply must turned on by this sequence Reverse direction When turning off Module on 5V Va Vs Module off Vs Va...

Страница 10: ...X B D Y B D and Z B D to CTRL B D 5 Measure the output wave of X Y Z B D with oscilloscope more than 200MHz and find the trouble of B D by comparing the output wave with below figure Measure Point fo Y B D TP Connector P4 80 pin Measure Point fo Z B D Connection part of panel SUS_OUT Measure Point fo X B D L1 RIGHT L2 LEFT BOTTOM 6 Check the SCAN Y side IC 7 Check the DATA X side COF IC 8 Replace ...

Страница 11: ... 11 A Y B D Output wave 1Frame B Y B D Output wave 7 12 SF A Z B D Output wave 1Frame B Z B D Output wave 1SF X B D Output wave 1 FRAME X B D Output wave 1 SF X B D Output wave Enlargement ...

Страница 12: ... COF Include not be shown part of Data COF quantity or a part 1 The problem between Data COF and X B D is more possible that the screen is not be shown as data COF 2 Confirm the connector of Data COF is well connected to X B D Correspond to the part that screen is not showing 3 Confirm whether the Data COF is failed and replace X B D Example of the screen display form Anything of the 7 Data COF ca...

Страница 13: ... the quantity of two Data COF IC that means the data which is conveyed from CTRL B D doesn t conveyed well 2 Confirm the XB D connection connector plugged in well Correspond to unusual screen 3 Replace relevant XB D or CTRL B D Relationship between screen and X B D Screen X B D Left Bottom of the Screen 4 7 Right X B D Right Bottom of the Screen 3 7 Left X B D Screen Display Form 13 Case 1 Case 2 ...

Страница 14: ... The screen has a vertical line with regular gap A vertical stripe flash at especial color 1 This is a problem about control B D 2 Replace Control B D Screen Display Form 2 7 A data copy is happened into vertical direction 1 In this case it s due to incorrect marking of scan wave 2 Replace a Y DRV B D or Y SUS B D Screen Display Form 14 one eighth of screen The screen display is very good The scre...

Страница 15: ...ially on full white screen or happens discharge partially on full black screen 1 Check the declination of Y B D set up set down wave 2 Check the declination of Z B D ramp wave 3 Measure each output wave with oscilloscope more than 200MHz and compare the data with below figure data Adjust the Y B D set up Test up B C s s setdown Test down D s and Z B D ramp Tramp F G s s declination by changing VR1...

Страница 16: ... 16 Block Diagram ...

Страница 17: ... 04 21 Part Number 6871QCH025A 6871QCH029A 6871QDH051A 6871QDH052A 6871QYH027A 6871QZH030A 6871QRH034A Note Initial Product Initial Product Initial Product Initial Product Initial Product Initial Product Initial Product Board CTRL B D ASSY TMDS CTRL B D ASSY LVDS YDRV Upper B D ASSY YDRV Lower B D ASSY Y SUS B D ASSY Z SUS B D ASSY X RIGHT B D ASSY ...

Страница 18: ... 18 2 ROM DATA No 1 2 Date 2003 04 21 2003 04 21 Contents Initial ROM Data of TMDS Initial ROM Data of LVDS ROM Data Version 42V5_06 42V5_08 ...

Страница 19: ...June 2003 Printed in Korea 3828VD0143E ...

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