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Colour Television
Module
LGE PDP 2K5
PDP42V7A062* PDP42V7A462* PDP42V7K062* PDP42V7K462*
Contents
Page
1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 5 3. Directions for Use 6 4. Mechanical Instructions 7 5. Service Modes, Error Codes, and Fault Finding 9 6. Block Diagrams, Test Point Overviews, and Waveforms 25 7. Circuit Diagrams and PWB Layouts 25 8. Alignments 26 9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 31 10. Spare Parts List 36 11. Revision List 37
©
Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. Printed in the Netherlands Subject to modification EN 3122 785 15593
Published by MW 0767 BU CD Customer Service
EN 2
1.
LGE PDP 2K5
Technical Specifications, Connections, and Chassis Overview
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter: 1.1 Technical Specifications PDP42V7* 1. 2. 3. 4. 5. 6. 7. Model name. Bar code (Code 128, contains the manufacture no.). Manufacture no. (Module serial no.). The trade name of LG Electronics. Manufacture date (Year & Month). The place of origin. Model suffix.
1.1
Technical Specifications PDP42V7*
The PDP Module is divided into a Panel part and a Drive part. The Panel part consists of Electrodes, Phosphor, various dielectrics, and gas, while the Drive part includes electronic circuitry and PWBs.
1.1.1
General Specification Model Name Number Of Pixels (HxV) Pixel Pitch (HxV m) Cell Pitch (HxV m) Display Area (HxV) Outline Dimension (HxVxD) Colour Arrangement Number Of Colours (RxGxB) Weight Aspect Ratio Peak Brightness : : : : : : : : : : : : : : : : : PDP42V7* 852 (*3) x 480 1080 x 1080 320 x 1080 (Base: Green Cell) 920.1x518.4 ± 0.5 mm 1005x597x60.6±1mm RGB closed type 1024 x 1024 x 1024 14.7 ± 0.5 kg 16:9 Typical 1500 cd/m2 (1/10 white window) Average 100:1 (Light room 100 Lx at centre) Typical 10000:1 (Dark room 1/10 white window, white window pattern at centre) Typical 200 W (Full White) 1) Over 60,000 Hrs. (Initial brightness 1/2)
Vsetup
-Vy
Vsc
F_15590_043.eps 040705
Figure 1-3 Voltage label (on rear side of module)
Contrast Ratio
Power Consumption Lifetime
: : :
PCB PART NO.
F_15590_044.eps 040705
Note 1) It can increase to 300 W depending on input image. 1.1.2 Definitions
Figure 1-4 Part number printing (on board)
BOARD ASS`Y PART NO.
* Rear side of module
Exhaust hole
Long side 1
BOARD NAME
short side 1
long side 2
short side 2
BOARD SERIAL NO.
F_15590_045.eps 040705
Figure 1-5 Part number label (on board)
TCP long2-1 TCP long 2-14
F_15590_041.eps 120707
TCP SERIAL NO.
Figure 1-1 Definition of module position
7####
F_15590_046.eps 040705
402K242V7000266.ASLGA 2004.02
F_15590_042.eps 040705
Figure 1-6 TCP serial no. (on TCP)
Figure 1-2 Identification label
Technical Specifications, Connections, and Chassis Overview
1.1.3 Connection Overview
LGE PDP 2K5
1.
EN 3
(A)
PSU(Power Supply Unit)
CN807 CN805 CN1308 1M02 1M03 1M46 CN806
(B)
(C)
F_15590_002.eps 070605
Figure 1-7 Connector overview Table 1-1 Connector signals No Connector P1 Z SUS board P5 Y SUS board P6 Y SUS board P9 CTRL board Input voltage & signal 5V, Va, Vs Vs 5V Control signal Table 1-4 Board overview No Description of board assy 1 2 3 4 5 Table 1-2 PSU Cable Assies No LGE Part No. A B C 6631Q39032A 6631Q39033A 6631Q39034A Description Cable assy 10p PSU->Y-SUS Cable assy 8p PSU->Z-SUS Cable assy 4p PSU->Y-SUS 6 7 LVDS CTRL Y-DRV TOP Y-DRV BTM X-R X-L Y-SUS Z-SUS
For the correct ordercodes, see "Ch. 10 Spare Parts".
Table 1-3 PSU Connectors No CN806 CN807 CN805 1M02 1M46 1M03 Input voltage & signal Vs: 187 V Vs: 187 V, Va: 65 V, 5 V 5V +Vsnd: +18 V, -Vsnd: -18 V 8V6: 8.6 V, +12V: 12 V, +5V2: 5.2 V, Vtun: 50 V 5V_sw: 5.2 V
CN1308 AC 230 V
EN 4
1.1.4
1.
LGE PDP 2K5
Technical Specifications, Connections, and Chassis Overview
Chassis Overview
VOLTAGE
PSU
Y-DRIVE TOP
Z-SUS B/D
Y-SUS B/D IPM
Y-DRIVE BOTTOM
X-LEFT B/D
TCP
CONTROL B/ D
X-RIGHT B/ D
F_15590_040.eps 170605
Figure 1-8 PWB location
Safety Instructions, Warnings, and Notes
LGE PDP 2K5
2.
EN 5
2. Safety Instructions, Warnings, and Notes
Index of this chapter: 2.1 Warnings 15. During repairs, high voltage or high temperature components must be put away from a lead line. 16. This is a cold chassis but you better use an isolation transformer for safety during repairs. If repairing the electricity source part, you MUST use the isolation transformer. 17. Do not place an object on the glass surface of the display. The glass may break or be scratched. 18. This product may be damaged if it is subjected to excessive stresses (such as excessive voltage, current, or temperature). The absolute maximum ratings specify the limits of these stresses. 19. 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. 20. 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. 21. Do not cover or wrap the product with a cloth or other covering while power is supplied to the product. 22. 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. 23. 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). 24. 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. 25. If faults occur due to arbitrary modification or disassembly, LG Electronics is not responsible for function, quality or other items. 26. 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. 27. 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 provision (12), is not included in the warranty. Repairs due to the other faults may be charged for depending on responsibility for the faults. 28. While assembling the PDP module into a set, use the EMI ground part of the Film Filter for grounding, BEFORE removing the protective film, to prevent that static electricity can damage the TCPs or boards
Notes: · Only authorised persons should perform servicing of this module. · When using/handling this unit, pay special attention to the PDP Module: it should not be enforced into any other way then next rules, warnings, and/or 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.
2.1
Warnings
1. Do not touch the Signal and Power Connectors while this product operates. Do not touch EMI ground part and Heat Sink of Film Filter. 2. Do not supply a voltage higher than specified to this product. This may damage the product or can create hazardous situations. 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 specified environmental conditions. This may damage the product or can create hazardous situations. 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 may cause electric shock or can create hazardous situations. 5. If the product emits smoke and abnormal smell, or makes an abnormal sound, immediately turn "off" the power. Continuing to use the product may cause electric shock or can create hazardous situations. 6. Do not (dis)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 (dis)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 electric shock or can create hazardous situations. 9. If the power cable is damaged, or if the connector is loose, do not use the product, otherwise, this can lead to hazardous situations or may cause electric shock. 10. If the power connector, or the connector of the power cable, is dirty or dusty, wipe it with a dry cloth. Otherwise, this can lead to hazardous situations. 11. The PDP module uses a high voltage (max. 450 VDC). Keep the cautions concerning electric shock and do not touch the device circuitry handling the PDP unit. And because the capacitors of the device circuitry may remain charged at the moment of Power "off", standing for 1 minute is required in order to touch the device circuitry. 12. Because the PDP module emits heat from the glass panel part and the drive circuitry, the environmental temperature must not be over 40 deg. 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. 13. If inserting components or circuit boards in order to repair, be sure to fix a lead line to the connector before soldering. 14. If inserting high-power resistors (metal-oxide film resistor or metal film resistor) in order to repair, insert it 10 mm away from a board.
EN 6
3.
LGE PDP 2K5
Directions for Use
3. Directions for Use
Not applicable.
Mechanical Instructions
LGE PDP 2K5
4.
EN 7
4. Mechanical Instructions
4.1 Mechanical Overview PDP42V7*
F_15590_060.eps 200605
F_15590_000.eps 010705
Figure 4-1 Cable dressing
Y-DRV TOP
Information of module Z-SUS Y-SUS Y-DRV BTM Serial No. Position an Information -Board P/No. -Board Name -Serial No. of Assembly
CTRL B/D
X-L B/D
X-R B/D
F_15590_110.eps 200306
Figure 4-2 Label location
EN 8
4.
LGE PDP 2K5
Mechanical Instructions
1. Warning & Caution Label
2. Safety approval 5. Manufacture Serial No. of Module 3. Voltage Label 4. Serial No. of Frame
F_15590_111.eps 070705
Figure 4-3 Label indication
1. Warning & Caution Label : Warning and caution for High Voltage, Hot Surface, Wound
4. Serial No. for Frame Ass'y
Warning (High Voltage, Hazard Voltage) Warning (Hot Surface, Hot part) Caution (Wound, Mechanical Hazard)
Serial No of Frame Ass'y Serial No. of Frame Ass'y for Philips are 3315Q-E037B, 3315Q-E037C and 3315Q-E037F . 5. Manufacture Serial No. Label of Module
2. Safety Approval Label
7.5 cm 7### 2.5 cm 5.25V/65Va/195Vs 2.0A/1.4A/1.2A
Model Name Max. Watt (Full White) Max. Volts Max. Amps The Trade Name of LG Electronics TUV Approval Mark Safety Approval Mark Safety Approval No.
7.0 7### 2.5
410K342V7001266.AKLGG21
2004.1
3. Voltage Label : Model Name & Operational Voltage
7.0 7### 5V 190V 195 / -120 / 115 / N.A / N.A 230W F_15590_112.eps 020806 2.5
Model Name Model Names for Philips are PDP42V7A062, PDP42V7A012, PDP42V74112, PDP42V74102, PDP42V74012, PDP42V74002, PDP42V70102 and PDP42V70002. PDP42V7 : PSU Character : Panel character : Circuit character : Mechanical character Bar Code (Code 128, Contains the manufacture No.) Manufacture No. The trade name of LG Electronics Manufactured date (Year & Month) The place Origin Model Suffix : ASLGB21 is Model Suffix for Philips
F_15590_113.eps 080705
Figure 4-5 Label information (2)
Figure 4-4 Label information (1)
Service Modes, Error Codes, and Fault Finding
LGE PDP 2K5
5.
EN 9
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: 5.1 Quick Module Check PDP42V7* 5.1.1 No Display 5.1.2 Bar Defect (Vertical) 5.1.3 Line Defect (Vertical) 5.1.4 Bar Defect (Horizontal) 5.1.5 Line Defect (Horizontal) 5.1.6 Mis-discharge Defect 5.2 Detailed Module Check PDP42V7* 5.2.1 No Display 5.2.2 Display Defects 5.2.3 Checking for Component Damage 5.3 Detailed PSU Check PDP42V7* 5.3.1 No Display Notes: · If it is not possible to repair the PDP by using the troubleshooting and repair process described below, exchange the boards, mentioned in the service process "Exchanging boards" at the end of this chapter. · If boards are exchanged, always re-align them, to make sure the PDP will perform correctly. This is also described in the service process "Exchanging boards" at the end of this chapter.
5.1
Quick Module Check PDP42V7*
What kind of defect?
No display?
Please follow the "No display" trouble shooting way (see figure below).
Dark display?
Please follow the "Dark display" trouble shooting way (see figure below).
Vertical defect?
Bar defect appeared?
Please follow "Bar defect" trouble shooting way (see figure below).
Line defect Horizontal defect? Please follow the "Line defect" trouble shooting way (see figure below). Misdischarge on screen? Please follow the "Mis-discharge" trouble shooting way (see figure below).
F_15590_064.eps 050705
Figure 5-1 Logical judgement
Trouble Shooting
Check model No. of module, all connectors and cables. No display? Check panel appearance Replace Ctrl B/D Check PSU output (Va,Vs,5v) Check Y, Z B/D Input voltage
Replace Y, Z B/D
Dark display ?
Check all cables and connectors
Check IPM of Y SUS ,Z B/D
Replace YDR B/D
Vertical defect?
Check panel appearance
Check TCP
Replace X B/D
Replace Ctrl B/D
Horizontal defect?
Check FPC
Replace YDR B/D
Replace YSUS B/D
Replace Ctrl B/D
Mis discharge on screen?
Replace YDR B/D
Replace YSUS B/D
Replace Ctrl B/D
F_15590_063.eps 050705
Figure 5-2 Quick check
EN 10
5.1.1
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
No Display Check each section with following method. If there is a problem, replace or repair that part. If it is not found, go to the next section. Connectors Confirm all connectors (PSU, Y-SUS, CTRL, Z-SUS). The module may not function normally by misconnection (can not send signal and power). Also misconnection for a long time can have a specific board failed.
F_15590_068.eps 290605
Figure 5-6 Signal input (LVDS) Exhaust Tip Check the Exhausting Tip for cracks with the naked eye to check the vacuum state. If there is a problem, replace the PDP module by a new one. In case of vacuum breakdown, the module makes a shaking noise because of inside gas ventilation. There may be a small crack, which cannot be seen with the naked eye. This noise is different from capacitor noise.
F_15590_065.eps 290605
Figure 5-3 Control + Y-SUS board
NORMAL
F_15590_069.eps 050705
Figure 5-7 Exhaust tip "normal"
F_15590_066.eps 290605
Figure 5-4 Control + Z-SUS board
F_15590_067.eps 290605
Figure 5-5 Control + X board
Service Modes, Error Codes, and Fault Finding
PSU (see figure "PSU trouble shooting") 1. Check each unit part of PSU inside with naked eye (capacitor, FET, IC, resistor). 2. Check fuse and switch position (on "Normal"). 3. Check output voltage, which is converted from AC to DC. 4. Voltage Check (5V, Va, Vs). When PSU protection occurred: check for short between YSUS and Z-SUS board.
LGE PDP 2K5
5.
EN 11
Confirm input voltage if not same
Adjust voltages
Multimeter Touch point (5V, Va ,Vs according to Module Label)
Check fuse
Fixed to Normal
- v alue +value
Vs Voltage ADJ (VR501) (Vs : About 180 ~195 V)
Adjust wa y
Va Voltage ADJ (VR601) Va : About 55 ~65 V
F_15590_071.eps 120707
Figure 5-8 PSU trouble shooting PSU Power Protection There is a power protection when the power is switched "off" automatically within 2-3 min. from power "on". The power protection function protects the boards when a short occurs on circuits of the PDP module, or when a power problem occurs. If there is no power, even after replacing the PSU, find out where the short occurred. In case of a PSU protection, the red LED will be "on" and an error code will be displayed via the green blinking LED (see also paragraph "Detailed PSU Trouble Shooting" further on). In case of a PSU protection, switch the service switch to "auto", disconnect the power supply connectors to the boards, to find if the boards are defective or the PSU itself.
EN 12
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
Y-SUS Board (see figure "Y-SUS b/d trouble shooting") 1. Check fuse: FS1 (5V), FS2 (Vs). 2. Check voltages (Vsetup, -Vy, and Vsc). 3. Check diode between GND and Y-SUS output. 4. Check whether output voltages agree with voltages on the label.
Control Board (see figure "Control b/d trouble shooting") 1. Check LED status (normal status lightening or not) 2. If not, check OSC X1 output. 3. Check CTRL input voltage (connector P10). 4. Check each FET (3.3V, 5V, and 1.8V).
Input voltage LED's
D2 D3 D4 D5
D1
Probe touching
OSC(X1)
point
Normal diode value= 0.6 (forward)
Check oscillating state. Be careful with physical shock.
Normal diode value = OL (reverse)
F_15590_074.eps 290605
5V 1..8 V DMM (GND) Check FET
F_15590_072.eps 060705
Figure 5-10 Y-SUS board output diode check
3.3 V
Figure 5-9 Control b/d trouble shooting
Vsc check point (measure over R53)
Vy adjust
Vy check point (measure over R78) Vset_dn adjust
Vs fuse
Vset_up adjust
5V fuse
F_15590_073.eps 060705
Figure 5-11 Y-SUS b/d trouble shooting
Service Modes, Error Codes, and Fault Finding
Z-SUS Board 1. Check the fuses. 2. Check input voltages (Va, 5V, and 15V) 3. Check FPC output diode value. 5.1.2
LGE PDP 2K5
5.
EN 13
Bar Defect (Vertical) Check each section with following method. If there is a problem, replace or repair that part. If not go to the next section. Connector Check the TCP connector and cables. If not connected well, it will result in a bar defect and abnormal display behaviour.
5V FUSE Va FUSE
Check here
Vs FUSE
F_15590_075.eps 070705
Figure 5-12 Z-SUS board fuse check
Bar
F_15590_078.eps 060705
Figure 5-14 Connector check (1)
Normal diode value = OL (reverse)
Normal diode value = 0.4 (forward)
F_15590_077.eps 060705
Check here
Figure 5-13 Z-SUS board FPC output diode check
Off
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Figure 5-15 Connector check (2) Checking TCP Confirm whether the TCP was torn or chopping.
TCP torn
F_15590_080.eps 060705
Figure 5-16 TCP torn
EN 14
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
Line Open or Short with the Same Distance This is MCM of Control board defect. The MCM cannot be replaced separately. So replace the Control board.
TCP IC broken
MCM (Multi Chip Module)
F_15590_081.eps 060705
Figure 5-17 TCP IC broken Control Board The Control board supplies the video signal to the TCP. So, if there is a bar defect on screen, it may be a Control board problem.
MCM of CTRL board defect. MCM can not be replaced separately. So replace the CTRL board.
MCM
Buffer IC
R - array
Array Resistor 6 line
TCP 192 Line output
F_15590_084.eps 060705
F_15590_082.eps 060705
Figure 5-20 Evenly repeated lines Figure 5-18 Control board address flow 5.1.3 Line Defect (Vertical) In case of one line open or shorted, check dirt (foreign substances) in TCP connector. First, try to remove the dirt with compressed air. If, after this, the same line appears again, replace the panel. Line Open or Short This phenomenon is due to TCP IC inside short or electrode problem. In this case, replace the panel.
1 electrode open (on flex foil)
1 line open
F_15590_083.eps 060705
Figure 5-19 Single line defect
Service Modes, Error Codes, and Fault Finding
5.1.4 Bar Defect (Horizontal) Most horizontal defects can be repaired. In case of adherence part of the film and rear panel electrode, or panel electrode open/short, replace the PDP panel. Connector If the connector on Y board and Z board are not plugged in well, it can result in a horizontal bar, because the sustain voltage Cannot be supplied to panel. So check connectors FPC and Ydrv-Ydrv first. 5.1.5
LGE PDP 2K5
5.
EN 15
Line Defect (Horizontal) FPC Check In case of one or more horizontal lines, this is probably due to FPC or panel inside the Control board. Y board is just normal.
FPC electrode open
Panel electrode Insulation break down
Disconnected
Horizontal 1 line.
Horizontal bar
F_15590_089.eps 070705
Figure 5-24 Open FPC electrode / Panel electrode breakdown
F_15590_085.eps 060705
Scan IC Check Check diode value of the right side part of the output pin.
Figure 5-21 Check FPC connectors
Disconnected
Screen off
F_15590_091.eps 290605
F_15590_086.eps 060705
Figure 5-25 Scan IC output diode check Figure 5-22 Check drive connectors Scan IC Check Check diode value of the right side part of the output pin.
Normal diode value= 0.6 (forward)
Normal diode value= OL (reverse)
F_15590_087.eps 060705
Figure 5-23 Scan IC output diode check
EN 16
5.1.6
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding 5.2
5.2.1
Mis-discharge Defect Most of mis-discharge appearance is a problem of Y-DR, YSUS, or Z board. Check these boards when mis-discharge occurs.
Detailed Module Check PDP42V7*
No Display The Screen Does Not Display a Picture 1. Check whether on the CTRL board LED (D1, D2, D3, D4, and D5) is turned "on" or not. 2. Check the power and signal cable of the CTRL board. 3. Check if the X, Y, and Z boards are plugged in correctly. 4. Check the connection of the X, Y, and Z boards to the CTRL board. 5. Measure the output wave of X, Y, and Z boards with an oscilloscope (> 200 MHz) and find the trouble board by comparing the output wave with below figure. Measure point for Y board: Bead B39. Measure point for Z board: Bead B28. Measure point for X board: P3. 6. Check the SCAN (Y side) IC. 7. Check the DATA (X side) TCP IC. 8. Replace the CTRL board. 9. Check if the fuse of Y and/or Z board is open and replace when open. 10. Check the input voltage (Vcc= 5 V, Va= 65 V, Vs= 187 V).
F_15590_093.eps 070705
Figure 5-26 Mis-discharge Checking Order 1. Check Y- and Z-SUS signal cable. 2. Check if Y-DRV IC is defective. 3. Check Y-SUS board voltages (-Vy, Vscw) 4. Check if Y- and/or Z-SUS IPM are defective (see paragraph "How to Check IPM" below). 5. Replace Control board How to Check IPM Forward direction Measure between: · GND (+) and Sus-out (-). · Sus-out (+) and Vs (-). When each two test diode values is over 0.4V => OK.
? <
<
F_15590_005.eps 060605
Reverse direction Measure between: · GND (-) and Sus-out (+). · Sus-out (-) and Vs (+). When each 4 nodes test diode values is infinite => OK
Figure 5-28 Y and Z board output waveform (1 Frame)
Set_up : 10 5us Approximately 60 V ( non adjustable ) Vs(187V)
Vs
Y
1 SF
Vs(187V)
0V Vy (-80V)
Set_dn : 100us
Scan (115V)
Vs 1 SF
Z
0V
165V
Z square wave form ( non adjustable )
Width ( 1.2~1.8 ) ( non adjustable )
H_15593_001.eps 120707
Figure 5-29 Y and Z board output waveform (1 Sub Frame)
<
F_15590_007.eps 060605
Figure 5-30 X board output waveform (1 Frame)
F_15590_095.eps 060705
Figure 5-27 IPM check
Service Modes, Error Codes, and Fault Finding
5.2.2 Display Defects All, or Half of the Screen is Not Shown · In case the entire screen is not shown: 1. Confirm if the 8-pin connection of the X to Z board is plugged in correctly. · In case half of the screen is not shown: 1. On the XR board: Confirm if the 60-pin connection of the CTRL board to the XR board is plugged in correctly. 2. On the XL board: Confirm if the 5- pin connection of the XR board to the XL board is plugged in correctly. Confirm if the 60-pin connection of the CTRL board to the XL board is plugged in correctly. 3. Replace relevant X board.
LGE PDP 2K5
5.
EN 17
Examine with the naked eye traces of blown ICs [3] or others.
F_15590_010.eps 040705
Notes: Relationship between Screen and X board: Screen Left half of the screen Right half of the screen X-board Right X-board Left X-board
Figure 5-33 Data TCP IC examination Unusual Pattern on Display 1. In case of generating unusual pattern of Data TCP IC unit as shown in below picture, there is problem in the signal (CLK, data STB) or connector that is input of Data TCP IC. 2. In case of "Case 1": Confirm the connection between Data TCP connector and IC. Replace the relevant X board. 3. In case of "Case 2" or "Case 3": Confirm the Data TCP connectors and the connection from CTRL to X board. Check the CTRL board and X board. Replace the relevant X board or CTRL board. 4. In case of "Case 4" or "Case 5": Check the connector from CTRL board to X board. Replace the relevant X board or CTRL board. Check the connection between Z and XR board (8-pin), and between XR and XL board (5-pin power connector).
Display No Display
F_15590_008.eps 060605
Figure 5-31 Screen display "1/2 display" Vertical Parts of the Screen are Missing 1. This can be related to a problem between Data TCP and X board. 2. Confirm that the connector of the Data TCP is well connected to the X board (it corresponds to the part that screen that is not shown). 3. Confirm whether the Data TCP is failed (inclusion examination with the naked eye of blown ICs or others). If the IC failed: replace the module. In case of X board shorting or open PWB pattern: when TCP IC is not defective, replace the X board. Notes: · Example of screen display (anyone of the 14 Data TCPs can be shown).
Unusual screen comes out about one TCP IC quantity or more
F_15590_011.eps 040705
Figure 5-34 Case 1
Unusual screen comes out about 1/2 of screen or equal distances of all screen
All Partial Not at all
F_15590_009.eps 040705
F_15590_012.eps 040705
Figure 5-35 Case 2
Figure 5-32 Screen display "Vertical parts missing" · How to examine Data TCP IC Change [1] "Va Power" into CATHOD, [2] "GND" into ANODE, and then examine the diode in forward or reverse direction.
EN 18
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
Unusual screen comes out about 4/14 quantity of screen or 3/14
F_15590_013.eps 040705
Figure 5-36 Case 3
Unusual screen comes out about 1/2 quantity of screen
F_15590_018.eps 060605
F_15590_014.eps 040605
Figure 5-41 Scan IC Figure 5-37 Case 4 Vertical Line with Regular Gap (Vertical Stripe Flash at Special Colour) · Replace the CTRL board.
Unusual screen comes out about all screen
F_15590_015.eps 040705
Figure 5-38 Case 5 Regular Stripe on Display 1. In case of the generation of regular vertical stripes around the location of one Data TCP IC (or more), check the connections. 2. Confirm if the connection of X board or CTRL board to X board correspond to unusual screen. 3. Replace the relevant X board or CTRL board.
It comes out partial field about the quantity of one IC or more or it may come out together at other field of screen
F_15590_019.eps 230407
Figure 5-42 Screen display "Vertical lines with regular gap"
F_15590_016.eps 040705
Data Copy into Vertical Direction · Replace the Y-DRV board or Y board.
Figure 5-39 Screen display "Regular stripes" Scan FPC Problem 1. Check the connection between Y DRV board and Scan FPC. 2. If the Scan IC is defective, replace the Y DRV board.
One eighth of screen
Case 2: Top Copy Case 3: Bottom Copy Case 4: Entire Copy F_15590_020.eps 040705
F_15590_017.eps 060605
Display Pattern
Case 1: Entire Copy
The screen display is very good The screen display is poor
Figure 5-43 Screen display "Data copy in vertical direction" Figure 5-40 Screen display "Scan FPC problem" · Check method of the SCAN IC Change the Vpp pin into ANODE and GND pin into CATHOD, and then test the diode in forward or reverse direction. One or Several Vertical Line(s) on the Screen 1. It may be caused by: Open or short on DATA TCP FPC attached panel. Defect on DATA TCP attached panel. 2. Replace Module.
Service Modes, Error Codes, and Fault Finding
5.2.3
It may show several vert. lines in a quarter or other division part of screen including left case
LGE PDP 2K5
5.
EN 19
Checking for Component Damage Y IPM (IC 15) or Z IPM (IC 2) When the internal Sustain_IGBT or ER_FET of Y IPM (IC15) or Z IPM (IC2) is damaged, VS fuse is open and there will be no picture. · Test Point: B32-GND (Y board), B28-GND (Z board). · Wave format: B32 (Y board) or B28 (Z board) has no output wave. · Measure position: Sustain section, B32 wave of Y board and B28 wave of Z board (full white pattern).
F_15590_021.eps 040705
Figure 5-44 Screen display "Vertical lines" One or Several Horizontal Lines on the Screen 1. It may be caused by: Open or short on SCAN FPC attached panel. Defect on SCAN IC attached panel. 2. Replace Y DRV board.
Y IPM Z IPM
It may show several horizontal lines including left case
F_15590_024.eps 060605
F_15590_022.eps 040705
Figure 5-47 IPM normal output Pass_Top FET (Y board: HS2) When the Pass_Top FET is damaged, electric discharge of the entire screen is generated. · Test Point: GND-B32 (Y board) · Wave format: When the Set_dn does not descend until -Vy.
Figure 5-45 Screen display "Horizontal lines" Low Brightness of Displayed Picture 1. In this case, Z board operation is not correct. 2. Check the power cord of Z board. 3. Check the connector of Z board and CTRL board. 4. Replace the CTRL board or Z board.
Vs
Partially Other Colour on Full White Screen or Partially Discharge on Full Black Screen. 1. Check the declination of Y board set-up and set-down wave. 2. Measure each output wave with oscilloscope (> 200 MHz) and compare the data with below figure data. Adjust the Y board Set_up (A) and Set_down (B) declination by changing VR1 and VR2 as written on the adjustment label. Measuring Point of Y board: B39
Y
1 SF
0V
H_15593_003.eps 120707
Figure 5-48 Pass-Top FET defective FET Assy (Y board: HS1) When Set_Up FET is damaged, there will be no picture. 1. Test Point: GND-B32 (Y board) Wave format: Set_up waveform is not generated. 2. When Set_Down FET is damaged, electric discharge of entire screen is generated. Test Point: GND-B32 (Y board) Wave format: Set_down waveform is not generated. Measure position: Reset wave of B32 (Y board) (full white pattern)
A(VR1) Set_up : 10 5us Approximately 60 V ( non adjustable ) Vs(187V 1)
Vs
Y
1 SF
Vs(187V)
0V
B(VR 2) Set_dn : 100us VR4 Vy (-80 1V)
H_15593_002.eps 120707
Figure 5-46 Y output voltage waveform No Specified Brightness at Specified Colour 1. Check the connector of CTRL board input signal. 2. Replace the CTRL board.
EN 20
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
Test Point: ICT measurement of GND-Y DRV board output. Wave format: As shown in figures "SCAN IC shorted output" and "SCAN IC normal output". Measurement point: SCAN section, output ICT of Y DRV board (full white pattern).
Set_up waveform does not come out
F_15590_026.eps 060605
Figure 5-49 Set_Up FET defective
'
F_15590_029.eps 060605
Figure 5-52 SCAN IC defective
Set_down waveform does not come out
F_15590_027.eps 060605
Figure 5-50 Set_Down FET defective
F_15590_030.eps 060605
Figure 5-53 Y DRV board Top and Bottom cable damaged
H_15593_004.eps 120707
7us 7us
Figure 5-51 Reset section normal output SCAN IC (Y-DRV board: IC1-8) 1. In case of the SCAN IC is damaged, one horizontal line may be open on the screen. Test Point: ICT measurement of GND-Y DRV board output. Wave format: As shown below figure. 2. When the SCAN IC is damaged (poor, external electricity, or spark), there might be no picture. Test Point: ICT measurement of GND-Y DRV board output Wave format: Output wave format is not generated (you can see if Y DRV board Top or Bottom's SCAN IC is damaged). 3. Screen shaked horizontally when Y DRV board Top and Bottom cable is damaged. Test Point: ICT measurement of GND-Y DRV board output. Wave format: As shown in figure "Y DRV board Top and Bottom cable damaged". 4. Overlap of two horizontal lines on the screen in case of shorted SCAN IC output.
115V
60V
F_15590_031.eps 040705
Figure 5-54 SCAN IC shorted output
Service Modes, Error Codes, and Fault Finding
LGE PDP 2K5
5.
EN 21
Crystal (CTRL board: X1) 1. When a crystal is damaged, the screen is not shown. Test Point: Measuring 3-pin of GND-Crystal (CTRL board: X1). Wave format: Output wave is not generated. 2. In case of unusual start-up of the crystal, the screen may blink. Wave format: As shown in figure below. Measurement position: Measuring output 3-pin of crystal (X1: 100 MHz) on CTRL board (full white pattern).
F_15590_032.eps 070705
Figure 5-55 SCAN IC normal output TCPs 1. In case of shorting or opening of TCP IC output, it may show one or several vertical lines. Test Point: Output TP of GND-TCP Wave format: As shown in figure below. In case of normal wave output, when STB signal is generated, the output must maintain "high". When STB signal is generated again, the output must fall to "low". But when the TCP IC is damaged, the STB signal is not generated, and the output falls to "low". 2. In case of a damaged TCP IC or power resistance, the screen is not shown or discharges partially. Test Point: Output TP of GND-TCP Wave format: Output wave is not generated.
F_15590_036.eps 040705
Figure 5-58 Crystal normal output
'
F_15590_035.eps 060605
Figure 5-59 Crystal defective output
F_15590_033.eps 060605
Figure 5-56 COF IC output defective
F_15590_034.eps 060605
Figure 5-57 TCP normal output
EN 22 5.3
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
Detailed PSU Check PDP42V7*
DIODE BRIDGE
MAIN CAP
FET
VS TRANS
DIODE DIODE CN CN 8 0 7 CN CN 8 0 6
PFC COIL
AC-IN AC-IN PFC FET
VA TRANS
DIODE DIODE CN CN 8 0 5
MULTI1 TRANS 1 1 M 0 2
Bridge
FET
MULTI2 TRANS
DIODE DIODE
STBY TRANS
1 1M03 1M46
1
F_15590_096.eps 040705
Figure 5-60 PSU top view
F_15590_098.eps 040705
Figure 5-62 PSU "on/off" sequence in "Normal" mode
F_15590_097.eps 040705
Figure 5-61 PSU Connector I/O pin assignment
To Philips SSB
To Audio
F_15590_099.eps 040705
Figure 5-63 PSU "on/off" sequence in "Auto" mode
Check LED's on Power Supply
Only Green LED is on?
No
Y
Red LED is on Y
No
Set is in Standby? Y Set Switch in Auto Mode
No
Green LED is blinking Y
No
No
Check PSU output voltages
Read out protection Code See wave form
PSU is defective
F_15590_100.eps 040705
Figure 5-64 PSU Fault finding tree
Service Modes, Error Codes, and Fault Finding
5.3.1 No Display 1. Check whether the LED1 of the PSU is turned "on" or not. 2. Check the power and signal cables of the PSU. 3. Check the connection of the X board, Y board, and Z board to the Control board. 4. Replace the PSU 5. Check the output voltages of the PSU (Vcc= 5V, Va= 65V, Vs= 187V). 6. When 5V2 is not present, check whether the fuse is shorted or opened in AUTO/NORMAL mode. 7. When the PSU is in protection mode, check waveform and count of LED1 as shown in the figures below.
LGE PDP 2K5
5.
EN 23
F_15590_107.eps 040705
Figure 5-71 +8V6 circuit protection
F_15590_108.eps 040705
F_15590_101.eps 040705
Figure 5-72 -18V circuit protection
Figure 5-65 DC-port signal (1M02) protection
F_15590_109.eps 040705
F_15590_102.eps 040705
Figure 5-66 Vs output protection
Figure 5-73 PFC circuit protection
5.4
5.4.1
Exchanging of Boards
Service Process If the PDP gives no picture, or if there is panel mal-discharge, first try the Quick Module Check and all the other repair procedures at the beginning of this chapter. However, if it is not possible to repair and/or re-align the PDP via the procedures described earlier, various boards will have to be exchanged (see the three steps below). Which of the boards will have to be exchanged, depends on the PDP model. Important: If boards are exchanged, it is always necessary to re-align the PDP ! See Chapter 8, Alignment. 1. On PDP models PDP42V7A062.ASLGB, PDP42V7A062.ASPHB, and PDP42V7A462.ASPHB, exchange the following boards: Y-SUS, Z-SUS, CTRL, XRLT, and XRRT. Use the following replacement kits: 9965 000 38493 (Y-SUS, Z-SUS, CTRL). 9965 000 32365 (XRLT). 9965 000 32366 (XRRT). 2. On PDP model PDP42V7K462.ASPHB exchange the following boards: Y-SUS, Z-SUS, CTRL. Use the following replacement kit: 9965 000 38493 (Y-SUS, Z-SUS, CTRL). 3. Attach the new voltage label from the kit to the PDP, close to the old voltage label, and cross out the -Vy value on the old label. 4. Check the -Vy and Vzb voltages of the PDP, to see if they correspond to the values on the new label (see Chapter 8, Alignment). Any other adjustments (like Vsc, Vsetup and Vsetdown) must also be caried out (see Chapter 8, Alignment).
F_15590_103.eps 040705
Figure 5-67 Va output protection
F_15590_104.eps 040705
Figure 5-68 5V output circuit protection
F_15590_105.eps 040705
Figure 5-69 12V and V_tun circuit protection
F_15590_106.eps 040705
Figure 5-70 +18V circuit protection
EN 24 5.5
5.
LGE PDP 2K5
Service Modes, Error Codes, and Fault Finding
Defect Description Form
This form must be used by the workshops for warranty claims:
Defect Description Form LCD PLASMA v4.0 final To be filled in by WORKSHOP / WORK CENTER
Date last modified: 28/03/2006
Country:
Type nr./Model nr. set
PHILIPS
Customer Account nr.:
Serial nr. set Type nr. display Serial nr. display Part nr display (12nc) Return number
LCD & Plasma DEFECT DESCRIPTION FORM
Job sheet nr.:
GENERAL REPAIR DATA
Constantly
Other: In hot environment In cold environment
Condition
Intermittently After a while No backlight No picture
Flickering / flashing picture Lines across/down image Inactive row(s) Inactive column(s) Missing colour(s) Light leakage
Other:
Symptom(s)
Picture too bright Scratches (LCD only acc. Pixel criteria sheet V4.0) Only partial picture Unstable picture
Qty of dots:
PANEL REPAIR
Pixel Defect(s):
Dark dots Bright dots
Mark Defect(s):
Following defect symptoms are out of warranty:
Symptoms Out of warranty
- Broken glass / Broken polarizer - Scratch(es) on display / polarizer
- Number of dark/bright pixels within spec. - Burn in (Plasma TV) / Sticking image (LCD TV) - MURA
These symptoms are not claimable.
Defect Board
New Board Serial Nr. Spare Part Nr. Serial Nr.
BOARD REPAIR
Spare Part Nr. 1. 2. 3. 4.
Note 1: The defective LCD-panel / PDP needs to be returned in the same packaging as the new part was send. If not the warranty claim will be rejected. DE10WEG Owner: PHILIPS CE EUROSERVICE
Figure 5-74 Defect Description Form (DDF)
F_15590_115.eps 050407
Block Diagrams, Test Point Overviews, and Waveforms
LGE PDP 2K5
6.
EN 25
6. Block Diagrams, Test Point Overviews, and Waveforms
Not applicable
7. Circuit Diagrams and PWB Layouts
Not applicable
EN 26
8.
LGE PDP 2K5
Alignments
8. Alignments
Index of this chapter: 8.1 General 8.2 Alignment PDP42V7*
8.2
8.2.1
Alignment PDP42V7*
Connection Diagram and Set-Up 1. For the connection diagram of the measuring instrument, refer to Fig. "Measuring equipment connection diagram". 2. Set-up the initial voltage (voltage label) Vcc= 5 V, Va= 65 V, Vs= 187 V. Note that the initial set-up voltage can be changed according to the module's characteristic.
8.1
General
Notes: 1. Important: if the PSU board, the Y-SUS board or the ZSUS board is replaced, the technician should check if the voltages delivered by these boards are correct. If not, the boards should be re-aligned in order to avoid bad performance of the PDP. 2. Allow the set to warm up according conditions below for at least 10 minutes before adjusting. Service signal: 100% Full White. Service DC voltage: Vcc= 5 V, Va= 65 V, Vs= 187 V. DC/DC Pack voltage: Vsc= 115 V, -Vy= -85V Preliminaries environment: Temp (25 ± 5 deg. C), Relative Humidity (65 ± 10%). 3. Module adjustment should follow below sequence. First, set up the Vsc / -Vy voltage (Vsc= 115 V, -Vy= 85 V). Then, adjust the voltage waveform (refer to adjustment). Caution: Do not leave a still image for more than 10 minutes (especially The Digital pattern or Cross Hatch Pattern which has clear gradation) on the display, because this will cause burn-in effects.
E/X Tube
Y-SUS Z SUS
CONTROLLER Signal Input (R,G,B,H/Vsync.)
X left
X right
5
1.0
DC Power Supply for 5V
65
0.02
DC Power Supply for Va
Signal Generator(VG-825)
Power
187
1.0
DC Power Supply for Vs
(1) The power of the signal generator should be turned on before turning "on" the power of the 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: 187V (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 => 5V (4) Signal generator should be selected with 852x480(WVGA) mode.
Caution
Also the PSU(Power Supply Unit) use is possible
F_15590_004.eps 060705
Figure 8-1 Measuring equipment connection diagram 8.2.2 Tools 1. 2. 3. 4. Digital oscilloscope: > 200 MHz. DVM (Digital Multimeter): Fluke 87 or similar. Signal generator: VG-825 or similar. DC power supply or PSU: DC power supply for Vs (1): 0 - 200 V, > 10 A. DC power supply for Va (1): 0 - 100 V, > 5 A. DC power supply for 5V (1): 0 - 10 V, > 10 A. DC/DC converter jig (1): The jig with an equivalent voltage output of PDP42V7#### module after taking the Vs, Va, and 5V voltage. Voltage stability of power supply: Within ± 1% for Vs and Va, within ± 3% for 5V.
Alignments
8.2.3 Alignments
LGE PDP 2K5
8.
EN 27
HS5
Vs Alignment on PSU This describes the Vs alignment on the PSU: 1. Set the switch on the PSU to "AUTO", see Figure "Switch setting". 2. Connect Mains/AC Power (from Mains Filter) to the PSU board (CN1308), see Figure "Connect Mains". 3. Connect a multimeter between CN06-Vs and ground (e.g. frame), see Figure "Vs & Va measure and alignment points". 4. Align Vs with the upper potmeter on the PSU (VR501) to: 184 V for the PDP42V7A062 and PDP42V7K062 models (different from label !). 187 V for the other V7 models (as printed on label). 5. Set the switch on the PSU back to "NORMAL".
CN07 + VR501 (Vs) + VR601 (Va) F101 CN1308 42" V7 PSU (Power Supply Unit) HS8 CN06
HS6 CN05 1M01 SW01 LED1
1M03
1M46
LED2
H_15593_011.eps 120707
Figure 8-4 Vs & Va measure and alignment points (step 3 &4) Va Alignment on PSU This describes the Va alignment on the PSU: 1. Set the switch on the PSU to "AUTO", see Figure "Switch setting". 2. Connect Mains/AC Power (from Mains Filter) to the PSU board (CN1308), see Figure "Connect Mains". 3. Connect a multimeter between CN06-Va and ground (e.g. frame), see Figure "Vs & Va measure and alignment points". 4. Align Va with the lower potmeter (VR601) to the value indicated on the PSU label. 5. Set the switch on the PSU back to "NORMAL".
Switch on PSU
F_15590_116.eps 120705
Figure 8-2 Switch setting (Vs & Va alignment step 1)
F_15590_117.eps 120705
Figure 8-3 Connect Mains (Vs & Va alignment step 2)
EN 28
8.
LGE PDP 2K5
Alignments
Vy Voltage Alignment on Y-SUS board This describes the Vy alignment on the Y-SUS board: 1. Convert the signal of the signal generator to a 100% Full White signal, or use the internal test pattern. 2. Measure the Vy voltage (-85 ± 1 V or, if the Y-SUS board has been replaced: -80 ± 1V) across R78 on the Y-SUS board, see Figure "Vsc & Vy measuring and adjustment on the Y-SUS board". 3. Align Vy to the value indicated on the existing label (if the Y-SUS board has not been replaced) or to the value indicated on the new voltage label from the replacement kit (if the Y-SUS board has been replaced) with potentiometer "Vy" on the Y-SUS board (see Figure "New voltage label from replacement kit").
Vscan Voltage Alignment on Y-SUS board
H_15593_007.eps 120707
Figure 8-5 Vsc & Vy measuring and adjustment on Y-SUS board
Vsetup
-Vy
Vsc
F_15590_043.eps 040705
Figure 8-6 Existing Voltage label (on rear side of PDP module)
H_15593_008.eps 120707
Figure 8-7 New Voltage label from replacement kit This describes the Vsc (Vscan) alignment on the Y-SUS board: 1. Convert the signal of the signal generator to a 100% Full White signal, or use the internal test pattern. 2. Measure the Vscan voltage (115 ± 1 V) across R53 on the Y-SUS board, see Figure "Vsc & Vy measuring and adjustment on the Y-SUS board". 3. Align Vscan to the value indicated on the existing voltage label (see Figure "Existing voltage label") with potentiometer "Vsc" on the Y-SUS board.
Alignments
Vset-up Alignment on Y-SUS board
LGE PDP 2K5
8.
EN 29
Note: When aligning the PDP, use a grey pattern generator, set to 10 grey steps.
P5
Vsc Vsc SETDN Vy FS2
+
Vy
+
+
P6 SETUP
+
FS1
Y SUSTAIN TEST POINT B39
Adjusting Vset-up voltage wave form: 1. Connect the measuring instruments according to Figure "Measuring equipment connection diagram" at the beginning of this chapter. 2. Turn on the measuring instruments with "Caution" of Figure "Measuring equipment connection diagram". 3. Connect the oscilloscope measuring probe to test point B39 (Bead) of Y-SUS board bottom and GND (for the location of B39, see Figure "Vsetup & Vsetdown alignment on Y-SUS board". 4. Connect the oscilloscope triggering probe to trigger point VS-DA on the Control board (see Figure "VS-DA trigger point on Control board"). 5. Turn potentiometer SETUP/VR1 on the Y-SUS board, and make the "A" waveform according to Fig. " Y, Z set-up waveform " to be 10 ± 2 s. Vset-down Alignment on Y-SUS board Adjusting Vset-down voltage wave form: 1. Turn potentiometer SETDOWN/VR2 on the Y-SUS board and make the "B" waveform according to Fig. " Y, Z set-up waveform " to be 100 ± 2 s.
H_15593_012.eps 120707
Figure 8-8 Vsetup & Vsetdown alignment on Y-SUS board
H_15593_009.eps 120707
Figure 8-9 VS-DA trigger point on Control board
A(VR1) Set_up : 10 5us Approximately 60 V ( non adjustable ) Vs(187V 1)
Vs
Y
1 SF
Vs(187V)
0V
B(VR 2) Set_dn : 100us VR4 Vy (-80 1V)
1 SF
Z
0V
165V
Z square wave form ( non adjustable )
H_15593_005.eps 120707
Figure 8-10 Y, Z set-up waveform
EN 30
8.
LGE PDP 2K5
Alignments
8.2.4 Internal Test Patterns The CTRL board is capable of generating its own video test patterns. There are two possibilities, both based on jumper positions R406 and R407: · Black screen: R406 is open and R407 is fitted (= standard setting). Now, if the PDP module does not receive any video signal, a full-black screen with very low light output is generated; this can be used for testing the PDP. · Automatic Test Patterns: R406 is fitted and R407 is open (desolder R407 and mount it on pos. R406). Now, the test patterns are shown in an automatic loop. Alternatively (and somewhat safer for the fragile tracks and components) the following method can be used to switch the PDP to its automatic test pattern mode: remove R407, switch on the set, and shorten position R406 for a moment. Caution: The components and tracks mentioned above are very fragile, so take care not to damage anything!
Vzb voltage Alignment on Z-SUS board
P4
IPM B28
Black pattern R406 R407 Pattern loop R406 R407
P5
Vzb VR1
R23
+
P2 P3
H_15593_010.eps 120707
F_15590_114.eps 080705
Figure 8-11 Vzb Voltage Alignment on the Z-SUS board Adjusting Vzb voltage: 1. Measure the Vzb voltage (165 V ± 1 V) across R23 on the Z-SUS board (see Figure "Vzb Alignment on the Z-SUS board"). 2. Turn potentiometer VR1/Vzb on the Z-SUS board until the voltage is obtained, indicated on the existing voltage label on the PDP (if the Z-SUS board has not been replaced) or to the voltage indicated on the new label from the replacement kit (if the Z-SUS board has been replaced).
Figure 8-12 Internal test pattern mode
Circuit Descriptions, Abbreviation List, and IC Data Sheets
LGE PDP 2K5
9.
EN 31
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter: 9.1 X Board 9.2 Z Sustain Board 9.3 Y Drive Board 9.4 Y Sustain Board 9.5 Control Board 9.6 DC/DC Converter Part 9.7 FPC (Flexible Printed Circuit) 9.8 FFC (Flat Flexible Cable) 9.9 TCP (Tape Carrier Package) 9.10 IPM (Intelligent Power Module) 9.11 Abbreviation List 9.12 IC Data Sheets
9.1
9.1.1
X Board
Purpose Receiving LOGIC signal from the CONTROL board and make ADDRESS PULSE (generates Address discharge) by ON/OFF operation, and then supplies this waveform to TCP (data).
X Left board
X Right board
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Figure 9-1 X boards 9.1.2 Dismantling 1. Remove connections between the boards: Figure 9-3 TCP Separating
F_15590_050.eps 040705
Signal cable
9.2
9.2.1
Z Sustain Board
Purpose To make the SUSTAIN and ERASE pulses that generates SUSTAIN discharge in the panel by receiving LOGIC signal from CONTROL board. This waveform is then supplied to the panel through FPC (Z).
Power cable
F_15590_049.eps 070705
* IPM (Intelligent Power Module) E/R(Energy recovery)
Figure 9-2 Between CONTROL board and X board
1. Lift up lock as indicated by the arrows (handle with care, as this part is easy to break). 2. Pull TCP as indicated (handle with care, as the TCP film part is easy to damage).
F_15590_051.eps 040705
Figure 9-4 Z Sustain Board
EN 32
9.2.2
9.
LGE PDP 2K5
Circuit Descriptions, Abbreviation List, and IC Data Sheets 9.4
9.4.1
Main Components IPM, FET, DIODE, electrolytic capacitor, and E/R coil.
Y Sustain Board
Purpose Generates SUSTAIN, RESET, and Vsc (SCAN) voltages, and supplies them to the Y DRIVE board.
9.2.3
Dismantling 1. Pull out Locks as indicated by the arrows. 2. Condition in Lock part is pulled. 3. Pull FPC as shown by arrow.
* IPM (Intelligent Power Module) E/R(Energy recovery)
F_15590_052.eps 040705
Figure 9-5 FPC Separating
9.3
9.3.1
Y Drive Board
Purpose · To supply SUSTAIN, RESET waveform which are made by the Y SUSTAIN board and are supplied to the PDP through the SCAN DRIVER IC. To supply a waveform that selects the horizontal electrode (Y SUSTAIN electrode) sequentially. Potential difference is 0 V between GND and Vpp of DRIVER IC in SUSTAIN period. Being generated potential difference between GND and Vpp only in SCAN period. 9.4.2 Figure 9-7 Y Sustain board Main Components IPM, diode, electrolytic capacitor, and FET.
F_15590_054.eps 040705
·
9.5
9.5.1
Control Board
Purpose Creates signal processing, and controls many FET on each DRIVER board with R, G, and B signals. Firstly receive 5 V, and then use two voltages (3.3 V / 1.8 V).
Note: In case of 42" V7, used DRIVER SCAN ICs are in total of 8 EA (TOP, BOTTOM: each 4 EA).
·Y DRIVER SCAN IC
MCM ( Multi Chip Module)
LVDS Signal Input pin
8 bit or 10 bit signal
MCM ( Multi Chip Module )
6 bi t signal
TCP
F_15590_055.eps 040705
Figure 9-8 Control board
Status Assembled
Status Separated with Y-SUS B/D
F_15590_053.eps 040705
Figure 9-6 Y Drive board
Circuit Descriptions, Abbreviation List, and IC Data Sheets 9.6
9.6.1
LGE PDP 2K5
9.
EN 33
DC/DC Converter Part
Purpose From 5V, Vs, and Va (from PSU), the DC/DC converter makes 5V, 15V, Vy, Vsc, 5Vf, and Va, which are essential for each board.
PSU 5V YSUS B/D 5V 15V 5Vf ( Floating Voltage) Vy Vsc X B/D Va
F_15590_056.eps 040705
9.7
9.7.1
FPC (Flexible Printed Circuit)
Purpose To supply a driving waveform to the PDP by connecting a PAD electrode of the PDP with a PWB (Y and Z boards). · There are two types of this for the Y board: One is singlesided; the other is double-sided (these have a pattern on it). · For Z board there is no pattern, single-sided, and Beta type (all of copper surface).
DC/DC Convert
Vs
DC/DC Convert
PSU Va
Z B/D
Ctrl. B/D
F_15590_058.eps 200605
Figure 9-11 Flexible Printed Circuit
Figure 9-9 DC/DC Converter block diagram
9.8
9.8.1
FFC (Flat Flexible Cable)
Purpose For connecting LOGIC signals between boards. There are two types · 0.5 mm pitch, 50-pin type. · 0.5 mm pitch, 60-pin type.
DC/DC converter part
F_15590_059.eps 200605
Figure 9-12 Flat Flexible Cable
F_15590_057.eps 040705
Figure 9-10 DC/DC Converter part
EN 34 9.9
9.9.1
9.
LGE PDP 2K5
Circuit Descriptions, Abbreviation List, and IC Data Sheets 9.10 IPM (Intelligent Power Module)
9.10.1 Purpose Attached to Z board and Y board, to make Sustain waveform. Sustainer: supply a square wave to the PDP to make video.
TCP (Tape Carrier Package)
Purpose To supply a waveform which is made by the X board to the PDP, and to select an output pin that is controlled by TCP when "on" or "off" (192 output pins per IC). · TCP is package type, which is made by Direct Bonding between IC and electrode film. · It is more effective than Wire Bonding type by increasing number of Data Driver IC output pins (96-pin -> 192-pins, pitch < 80 m).
F_15590_060.eps 200605
Figure 9-13 Tape Carrier Package
IPM
F_15590_062.eps 050705
Figure 9-14 Intelligent Power Module
Sustain
H_15593_006.eps 120707
Figure 9-15 Sustain pulse (example, form is dependent on ROM) 9.10.2 Main Components Heatsink, capacitor, diode, IC, resistor, transistor, and FET.
Circuit Descriptions, Abbreviation List, and IC Data Sheets 9.11 Abbreviation List
AC B/D CLK CTRL DC FET FPC I/O IC IPM LED LGE MCM PCB PDP PFC PSU PWB RGB STB TCP Alternating Current Board Clock signal Control (board) Direct Current Field Effect Transistor Flexible Printed Circuit Input/Output Integrated Circuit Intelligent Power Module Light Emitting Diode Lucky Goldstar Electronics (supplier) Multi Chip Module Printed Circuit Board (same as PWB) Plasma Display Panel Power Factor Corrector circuit Power Supply Unit Printed Wiring Board (same as PCB) Red, Green, Blue colour space Stand-by signal Tape Carrier Package
LGE PDP 2K5
9.
EN 35
9.12 IC Data Sheets
Not applicable
EN 36
10.
LGE PDP 2K5
Spare Parts List
10. Spare Parts List
Please refer to the Philips Service website, for an actual overview (monthly updated).
Revision List
LGE PDP 2K5
11.
EN 37
11. Revision List
Manual xxxx xxx xxxx.0 · First release. Manual xxxx xxx xxxx.1 · Spare parts overview - PWBs added. Manual xxxx xxx xxxx.2 · Spare parts overview - PWBs added. Manual xxxx xxx xxxx.3 · Spare parts overview removed from manual, because this information can be found on the Philips Service website (monthly updated). · Information on re-alignment of various PDP voltages updated (necessary if e.g. boards are replaced).
EN 38
11.
LGE PDP 2K5
Revision List