50PS80 Plasma Displaydiagramas.diagramasde.com/televisores/50PS80-Fall-2009-v...4 August 2009 Plasma 50PS80 IMPORTANT SAFETY NOTICE The information in this training manual is intended

Advanced Single Scan Troubleshooting

Training Manual

50PS80 Plasma Display50PS80 Plasma Display

August 2009

2 August 2009 Plasma 50PS80

Overview of Topics to be Discussed

• Y SUS Board

• Z SUS Output Board (Connects directly with FPC to Panel)• Y Drive Boards

• Control Board• X Drive Boards (3)

Circuit Board Operation, Troubleshooting and Alignment of :• Switch Mode Power Supply

• Main Board

Section 1

Section 2

Contact Information, Preliminary Matters, Specifications,Plasma Overview, General Troubleshooting Steps, Disassembly Instructions, Voltage and Signal Distribution

OUTLINEOUTLINE

• Power Button (Front Key Board)NEW

Receives its 5V from Power Supply, not Y-SUS

Turns off the SMPS via Key On line.

NEW


50PS80 Plasma Display

This Section will cover Contact Information and remind the Technician of Important Safety Precautions for the Customers Safety as well as the Technician and the Equipment.

Basic Troubleshooting Techniques which can save time and money sometimes can be overlooked. These techniques will also be presented.

This Section will get the Technician familiar with the Disassembly, Identification and Layout of the Plasma Display Panel.

At the end of this Section the Technician should be able to Identify the Circuit Boards and have the ability and knowledge necessary to safely remove and replace any Circuit Board or Assembly.

Overview of Topics to be DiscussedOverview of Topics to be Discussed


IMPORTANT SAFETY NOTICEIMPORTANT SAFETY NOTICE

The information in this training manual is intended for use by persons possessing an adequate background in electrical equipment, electronic devices, and mechanical systems. In any attempt to repair a major Product, personal injury and property damage can result. The manufacturer or seller maintains no liability for the interpretation of this information, nor can it assume any liability in conjunction with its use. When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Electronics. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury. If wires, screws, clips, straps, nuts, or washers used to complete a ground path are removed for service, they must be returned to their original positions and properly fastened.

CAUTIONCAUTION

To avoid personal injury, disconnect the power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks. Also be aware that many household products present a weight hazard. At least two people should be involved in the installation or servicing of such devices. Failure to consider the weight of an product could result in physical injury.

Preliminary Matters (The Fine Print)Preliminary Matters (The Fine Print)


Today’s sophisticated electronics are electrostatic discharge (ESD) sensitive. ESD can weaken or damage the electronics in a manner that renders them inoperative or reduces the time until their next failure. Connect an ESD wrist strap to a ground connection point or unpainted metal in the product. Alternatively, you can touch your finger repeatedly to a ground connection point or unpainted metal in the product. Before removing a replacement part from its package, touch the anti-static bag to a ground connection point or unpainted metal in the product. Handle the electronic control assembly by its edges only. When repackaging a failed electronic control assembly in an anti-static bag, observe these same precautions.

Regulatory InformationRegulatory Information

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna; Increase the separation between the equipment and the receiver; Connect the equipment to an outlet on a different circuit than that to which the receiver is connected; or consult the dealer or an experienced radio/TV technician for help.

ESD NoticeESD Notice (Electrostatic Discharge)(Electrostatic Discharge)


Also available on the Also available on the Plasma pagePlasma page

New Training Materials on New Training Materials on the Learning Academy sitethe Learning Academy site

Contact InformationContact InformationCustomer Service (and Part Sales) (800) 243-0000

Technical Support (and Part Sales) (800) 847-7597

USA Website (GCSC) aic.lgservice.com

Customer Service Website us.lgservice.com

LG Web Training lge.webex.com

LG CS Academy lgcsacademy.com

LG Electronics Alabama, Inc. 201 James Record Road, Huntsville,

AL, 35813.

http://136.166.4.200

Published August 2009 by LG Technical Support and Training

32LG40, 32LH30, 42LG60, 42LG70, 42LH20, 42LH40, 42LH50, 47LG9042PG20, 42PQ20, 42PQ30, 50PG20, 50PS80, 50PS60

LCD-DV:PLASMA:

Plasma PanelAlignment Handbook


Safety & Handling Regulations

1. Check the appearance of the Replacement Panel and Circuit Boards for both physical damage and part number accuracy.

2. Check the model label. Verify model names and board model matches.

3. Check details of defective condition and history. Example: Y Board Failure, Mal-discharge on screen, etc.

1. Approximately 10 minute pre-run time is required before any adjustments are performed.

2. Refer to the Voltage Sticker inside the Panel when making adjustments on the Power Supply, Y SUS and Z SUS Boards.

Always adjust to the specified voltage level.

3. Be cautious of electric shock from the PDP module since the PDP module uses high voltage, check that the Power Supply

and Drive Circuits are completely discharged because of residual current stored before Circuit Board removal.

4. C-MOS circuits are used extensively for processing the Drive Signals and should be protected from static electricity.

5. The PDP Module must be carried by two people. Always carry vertical NOT horizontal.

6. The Plasma television should be transported vertical NOT horizontal.

7. Exercise care when making voltage and waveform checks to prevent costly short circuits from damaging the unit.

8. Be cautious of lost screws and other metal objects to prevent a possible short in the circuitry.

9. New Panels and Frames are much thinner than previous models. Be Careful with flexing these panels. Be careful with lifting Panels from a horizontal position. Damage to the Frame mounts or panel can occur.

10. New Plasma models have much thinner cabinet assemblies and mounts. Be extremely careful when moving the set around as damage can occur.

Checking Points to be Considered

Plasma OverviewPlasma Overview


Basic Troubleshooting StepsBasic Troubleshooting Steps

Define, Localize, Isolate and Correct

•Define Look at the symptom carefully and determine what circuits could be causing the failure. Use your senses Sight, Smell, Touch and Hearing. Look for burned parts and check for possible overheated components. Capacitors will sometimes leak dielectric material and give off a distinct odor. Frequency of power supplies will change with the load, or listen for relay closing etc. Observation of the front Power LED may give some clues.

•Localize After carefully checking the symptom and determining the circuits to be checked and after giving a thorough examination using your senses the first check should always be the DC Supply Voltages to those circuits under test. Always confirm the supplies are not only the proper level but be sure they are noise free. If the supplies are missing check the resistance for possible short circuits.

•Isolate To further isolate the failure, check for the proper waveforms with the Oscilloscope to make a final determination of the failure. Look for correct Amplitude Phasing and Timing of the signals also check for the proper Duty Cycle of the signals. Sometimes “glitches” or “road bumps” will be an indication of an imminent failure.

•Correct The final step is to correct the problem. Be careful of ESD and make sure to check the DC Supplies for proper levels. Make all necessary adjustments and lastly always perform a Safety AC Leakage Test before returning the product back to the Customer.


This section of the manual will discuss the specifications of the 50PS80 Single layer design. The 1080p Full HD resolution and THXDisplay certification makes this series the must have HDTV in 2009.

PRODUCT INFORMATION:PRODUCT INFORMATION:


Specifications Pg 1Specifications Pg 1 1080P PLASMA HDTVBroadband Full HD 1080p Plasma TV (50” diagonal)

•LG NetCast™ Entertainment Access* (Netflix®, YouTube™, Yahoo!® Widgets, My Media Access CIFS)•50" Screen •Full HD 1080p •THX Display Certification and THX Cinema Mode •THX Media Director •Super Bright Panel: 1,500 cd/m2 Brightness•600Hz (Sub Field Driving) •Four (4) HDMI (V.1.3 with Deep Color) •ISFccc ready •USB 2.0 for access to digital music and photos (MP3, JPEG) •LG SimpLink(TM) Connectivity •Smart Energy Saving •LG Core Technologies •Clear Voice •Easy UI menu interface •Pure Black Level •Auto Navigation: (VCR, DVD, Bluray, HD DVD, SetTop Box, Satellite, Cable Box, Game, PC) •Input Labeling


Specifications Pg 2Specifications Pg 2 (Continued from Previous Page)

•Quick View (Previous Channel) •Parental Control w/V-Chip •Key Lock •Closed Caption 3 (English, Spanish, French) •Trilingual Menus (English/Spanish/French) •EZ Menus (High Performance Interface) •Channel Add/Delete •Favorite Channel •Auto Clock •Manual Clock •On/Off Timer •Sleep Timer •SimpLink™•Auto Off (When no video is present) •Image Sticking Minimization•100,000 Hour Panel Life (typical)•NTSC/ATSC Tuners with Clear QAM


Specifications Logo Familiarization (Pixels, HDMI, Invisible SpeSpecifications Logo Familiarization (Pixels, HDMI, Invisible Speakers, XD Engine)akers, XD Engine)

Invisible SpeakerPersonally tuned by Mr. Mark Levinson for LG TAKE IT TO THE EDGE newly introduces ‘Invisible Speaker’ system, guaranteeing first class audio quality personally tuned by Mr. Mark Levinson, world renowned as an audio authority. It provides Full Sweet Spot and realistic sound equal to that of theaters with its Invisible Speaker.

FULL HD RESOLUTION 1080p HD Resolution Pixels: 1920 (H) × 1080 (V)High definition television is the highest performance segment of the DTV system used in the US. It’s a wide screen, high-resolution video image, coupled with multi-channel, compact-disc quality sound.

HDMI (1.3 Deep Color) Digital multi-connectivity HDMI (1.3 Deep color) provides a wider bandwidth (340MHz, 10.2Gbps) than that of HDMI 1.2, delivering a broader range of colors, and also drastically improves the data-transmission speed.

Dual XD EngineRealizing optimal quality for all imagesOne XD Engine optimizes the images from RF signals as another XDEngine optimizes them from External inputs. Dual XD Engine presents images with optimal quality two times higher than those of previous models.


Specifications Logo Familiarization Broad Band TVSpecifications Logo Familiarization Broad Band TV

• User friendly interface

• Content service from Yahoo, Netflix, YouTUBE

• Widget service from Yahoo! ‐ Weather, VoD, shopping and information

• Yahoo! News, Yahoo! Weather, Yahoo! Finance, Yahoo! Video,Yahoo! Sports, Flicker, OMG

FIXED:


Specifications Logo Familiarization (Picture Wizard)Specifications Logo Familiarization (Picture Wizard)

Customers can customize picture performance without the need for additional expense.

Picture Wizard easily guides consumers through the calibration process using on-screen reference points.


Specifications Logo Familiarization (AV Model, Specifications Logo Familiarization (AV Model, VolVol Control, Clear Voice, Energy)Control, Clear Voice, Energy)

AV Mode "One click" - Cinema, Sports, Game mode.TAKE IT TO THE EDGE is a true multimedia TV with an AV Mode which allows you to choose from 3 different modes of Cinema, Sports and Game by a single click of a remote control.

Clear Voice Clearer dialogue sound Enhanced “Clear Voice” feature with 12‐level voice control (‐6 to +6) enables adjustment to the voice frequency ensuring clear sound despite loud backgroundnoise.

Save Energy, Save MoneyHome electronic products use energy when they're off to power features like clock displays and remote controls. Those that have earned the ENERGY STAR use as much as 60% less energy to perform these functions, while providing the same performance at the same price as less-efficient models. Less energy means you pay less on your energy bill. Draws less than 1 Watt in stand by.

Save Energy, Save MoneyIt reduces the plasma display’s power consumption.The default factory setting complies with the Energy Star requirements and is adjusted to the comfortable level to be viewed at home.(Turns on Intelligent Sensor).

Cinema Mode ispre‐calibratedusing ISFccc,(new in 2009)


(600 Hz Sub Field Driving)

• 600 Hz Sub Field Driving is achieved by using 10 sub-fields per frame process (vs. Comp. 8 sub-field/frame)

• No smeared images during fast motion scenes

600Hz Sub Field Driving600Hz Sub Field Driving

Note: Sub field 2 Note: Sub field 2 through 10 are through 10 are

actually in reverse. actually in reverse. Brighter image Brighter image should be last.should be last.

Sub Field firing occurs using wall charge and polarity differences between Y-SUS and Z-SUS signals.


Dazzling ‘visual and sound’ performance (certified by THX)

• LG is one of the first consumer electronics companies to achieve THX Display Certification. An industry benchmark for video quality, THX Display Certification signifies that an HDTV delivers exceptional images, bringing more immersive movie, broadcast and video game experiences to your living room.

• Long history in the video category• DVD/D-cinema mastering programs, THX Optimizer• THX is unique, since it is involved in every step of the production chain• Mission : make the picture at home look like the picture in the studio

THX Familiarization THX Familiarization


Remote ControlRemote Control

TOP PORTIONBOTTOM PORTION


Accessing the Service MenuAccessing the Service Menu

REMOTETOP PORTION

SIDE KEYS

To access the Service Menu.1) Turn the Set On2) Simultaneously, Press and

“Hold” the Menu Key on the Side Key pad and Press and “Hold” the Menu Key on the Remote approximately 5 seconds.

3) If Customer’s Menu appears, continue to hold until it disappears.

4) The Service Menu appears

Note: It is possible, dependant upon the Software Version, a Password may be required to enter the Service Menu.

If a password is required, enter0000


Rear and Side Input JacksRear and Side Input Jacks

AC In USBMusic/Pictures andSoftware Upgrades

LAN also forSoftware Upgrades


USB Download1) Open the USB Flash Drive.

5) Cursor left and highlight ‘START’ Button and push ‘Enter’ button using the remote control.

6) You can see the download progress Bar.

7) Do not unplug until unit has automatically restarted.

8) When download is completed,

you will see “COMPLETE”.

9) Your TV will be restarted automatically.

※CAUTION:

Do not remove AC power or the USB Flash Drive.Do not turn off Power, during the upgrade process.

2) Copy new software (xxx.bin) to Root.Make sure to have correct software file.

3) With TV turned on, insert USB flash drive.

4) You can see the message “TV Software Upgrade”

Shows theCurrently Installed

Version

Shows theSoftware Versionfound on the USB

Flash Drive

Shows theSoftware file

found on the USBFlash Drive

3-1/8"78.7mm

14-5/16"363.2mm

1-3/4"45mm

50PS80 Dimensions50PS80 Dimensions

31-5/16"795mm

48-5/16"1226.8mm

Remove 4 screws to remove stand for

wall mount

Model No.Serial No.

Label

16-5/16"415mm

25-7/16"646mm

32-7/8"835.7mm

6-5/16"160mm

7-7/8"200mm

2-5/16"59.3mm

15-3/4"400mm

5-9/16"140.7mm

15-3/4"400mm

15-3/4"400mm

15-3/4"400mm

There must be at least 4 inches of Clearance on all sides

22

82.2 lbs with Stand75.6 lbs without StandWeight:

282W (Typical)0.13W (Stand-By)

Power:


This section of the manual will discuss Disassembly, Layout and Circuit Board Identification, of the 50PS80 Advanced Single Scan Plasma Display Panel.

Upon completion of this section the Technician will have a betterunderstanding of the disassembly procedures, the layout of the printedcircuit boards and be able to identify each board.

DISASSEMBLY SECTIONDISASSEMBLY SECTION

Removing the Back CoverRemoving the Back Cover

To remove the back cover,remove the 29 screws indicated by the arrows.

(The Stand does not need to be removed).

PAY CLOSE ATTENTION TO THE TYPE, SIZE AND LENGTHOf the screws when replacing the back cover.

Improper type can damage the front.

24


Circuit Board LayoutCircuit Board Layout

Y SUS PWB

Z-SUS PWB

Right “X”Left “X”

Main PWB

Power Supply(SMPS) PWB

FPC

FPC

PowerButton

FPCFPC

AC In

Side Input(part of main)

FPCFPC

FPCFPC

FPCFPC

FPC

Center “X”

Z-SUBPWB

Y Drive Upper

Panel Voltage Label

Control PWB

Panel ID Label

Conductive Tape Under Main PWB

TCPHeat SinkControl Keys

Y Drive Lower

Invisible Speakers


SMPS (Switch Mode Power Supply) PWB RemovalSMPS (Switch Mode Power Supply) PWB Removal

P812P811

P813

SC101

Disconnect P811, P812, P813 and SC101Then Remove the 8 Screws


Main PWB RemovalMain PWB Removal

P1101

Then Remove the4 Screws

P900

n/cn/c

P203

P1108

n/cn/c

Disconnect P1101, P1108 and P900

Disconnect P203 by lifting up the locking mechanism and removing the LVDS ribbon cable.


Control PWB RemovalControl PWB Removal

P1

Disconnect P2, and P200Disconnect P5 (LVDS cable) by pressing inward on the two locking tabs and rocking the cable out.Disconnect P1, P101, P102 and P104 by removing the tape and lifting upward on the locking tab pulling the cable out.Then Remove the 4 Screws

P101

P5

P104

P102

P2P200

n/cn/c

n/cn/c

n/cn/c

Look on backLook on backfor heat transfer for heat transfer

materialmaterial


YY--SUS PWB RemovalSUS PWB Removal

Disconnect P302 and P307.

Disconnect P101 and P309 by removing the tape and lifting upward on the locking tab pulling the cable out.

Then Remove the 10 Screws

Carefully separatethe Y-SUS fromthe Y-DriveUpper and LowerBoards.

P302

P101

P307

P309

n/cn/c


YY--Drive Upper PWB RemovalDrive Upper PWB Removal

Disconnect P111 and P112.

Disconnect P101, P102, P103 and P104 by lifting up on the locking tab and then lifting up slightly on the FPC to release the small wings on the cable.


Carefully separatethe Y-Drive fromthe Y-SUS Boards which is connected via P114 and P116.

P112

P102

P111

P116

P114

P101

P104

P103

••Note: All connectors Note: All connectors going to the Ygoing to the Y--SUS board SUS board are fragile.are fragile.

••P114, P116, P214 and P114, P116, P214 and P216. P216.

••Removing and reinserting Removing and reinserting the drive board or the the drive board or the YY--SUS can cause an SUS can cause an intermittent or open intermittent or open connection. connection.

••Investigate these Investigate these connectors carefully after connectors carefully after replacing either the Yreplacing either the Y--SUS SUS or Upper or Lower Yor Upper or Lower Y--Drive Drive boards and resolder if boards and resolder if necessary.necessary.


YY--Drive Lower PWB RemovalDrive Lower PWB Removal

Disconnect P211.

Disconnect P201, P202, P203 and P204 by lifting up on the locking tab and then lifting up slightly on the FPC to release the small wings on the cable.


Carefully separatethe Y-Drive fromthe Y-SUS Boards which is connected via P214 and P216.

P202P216

P214P201

P204

P203

••Note: All connectors Note: All connectors going to the Ygoing to the Y--SUS board SUS board are fragile.are fragile.

••P114, P116, P214 and P114, P116, P214 and P216. P216.

••Removing and reinserting Removing and reinserting the drive board or the the drive board or the YY--SUS can cause an SUS can cause an intermittent or open intermittent or open connection. connection.

••Investigate these Investigate these connectors carefully after connectors carefully after replacing either the Yreplacing either the Y--SUS SUS or Upper or Lower Yor Upper or Lower Y--Drive Drive boards and resolder if boards and resolder if necessary.necessary.

P211


ZZ--SUS PWB RemovalSUS PWB Removal

Disconnect P100 and P101

Disconnect P102 and P104 by pulling out (to the right) the locking tabs and removing the FPC from the connector.


Carefully separatethe Z-SUS fromthe Z-SUB P103 and remove.

P104

P102

P103

P101

P100

n/cn/c


Removing Front Power LED and IR BoardRemoving Front Power LED and IR Board

Power LED PWBFront IR PWB

Screw

To remove the Ft Power LED and Ft IR board,To remove the Ft Power LED and Ft IR board,

Remove the 2 screws in the Front IR PWB Remove the 2 screws in the Front IR PWB

Remove the 1 screw at the bottom of the Power LED PWB.Remove the 1 screw at the bottom of the Power LED PWB.

1

1

2

2

Note, this sNote, this screw has an Oversized washer which locks the board in place.

2

GroundStrap screw

Ground snap

CabinetBottom

Note, the left screw in step 1 has a ground strap Note, the left screw in step 1 has a ground strap lug. Make sure to return it when reinstalling the lug. Make sure to return it when reinstalling the board. This ground snaps into the Bottom Metal.board. This ground snaps into the Bottom Metal.

1

Bottom Metal


LVDS Cable Connector

Lay the Plasma down carefully on a padded surface.Make sure AC is removed and remove the Back Cover and the Stand.Carefully remove the LVDS Cable P203 from the Main Board by lifting the Locking Tab upward and pull the ribbon cable free. (See illustration to the right). This prevents possible damage to the cable.

(A) Remove the Stand (4 Screws removed during back removal)Pull the stand out of the stand support bracket.

(B) Remove the Stand Metal Support Bracket (5 Screws). (C) On the Main board, remove connectors P1108, P1101 and P900.

The LVDS connector should already be removed (see above).(D) Remove the 4 screws from the Main Board Mounting Bracket.

(Note: Decorative Plastic Piece on right does not need to be removed)Carefully reposition the Main Board and Mounting Bracket up and off to the right side.

(E) Remove the metal support Braces marked “E”. Note: There is a Left and a Right brace. (3 Screws per/bracket).

(F) Remove the 13 screws holding the Heat Sink.

Removing the X Drive Circuit Board Removing the X Drive Circuit Board

PROCEDURE: (See Figure on next page). Flip up the Locking Tab

X-DRIVE PWBs REMOVAL:Disconnect all TCP ribbon cables from the defective X-Drive PWB. Remove the 5 screws holding the PWB in place.Remove the PWB. Reassemble in reverse order. Recheck Va / Vs / VScan / -VY / Z-Bias.


Getting to the X Circuit BoardsGetting to the X Circuit Boards

A

D

C

E

RightE

Left

F

Heat Sink

Warning: Never run the TV with the TCP Heat Sink removed

Warning Shorting Hazard: Conductive Tape under the Main board. Do not allow to touch energized circuits.

B

B

C


50PS80 Plasma Display

This Section will cover Circuit Operation, Troubleshooting and Alignment of the Power Supply, Y-SUS Board, Y Drive Boards, Z-SUS Board, Control Board, Main Board and the X Drive Boards.

At the end of this Section the technician should understand the operation of each circuit board and how to adjust the controls. The technician should be able with confidence to troubleshoot a circuit board failure, replace the defective circuit and perform all necessary adjustments.

CIRCUIT OPERATION, TROUBLESHOOTING AND CIRCUIT ALIGNMENT SECTIONCIRCUIT OPERATION, TROUBLESHOOTING AND CIRCUIT ALIGNMENT SECTION

50PS80 SIGNAL and VOLTAGE DISTRIBUTION DIAGRAM50PS80 SIGNAL and VOLTAGE DISTRIBUTION DIAGRAM

37

P102

P101

P103

P104

P202

P201

P203

P204

Control KeysPower Button

Display PanelHorizontal Grids Luminance

P101

FloatingGround

Y-SUS PWB

P312 (FG) P201

P314 (FG)P101

P307P216

M5V, Vs, Va

P811

P814SK101

STB +5V (also AC Voltage Det)

SMPSTurn On

Commands

SMPSPWB

ACInputFilter

P100

SMPS OUTPUT VOLTAGES IN STBY

Set inStand By:STB +5AC Voltage Det

Logic Signals

P1108 P203

P1101P900

MAIN PWBSpeakers

X-PWB-RightX-PWB-Left

P201 P202 P203 P204 P205 P206 P301 P302 P303 P304 P305 P306

RGB Logic Signals

VaRGB Logic

Signals

Va

CONTROLPWBP102

LVDS

Y DriveUpper

Z SUS PWB

P101

P200

P104

P232 P211 P311 P331

Display Panel Vertical Address (Color Information)

Display PanelGrids Address

Reset

17V

Relay OnM5 OnVS On

STB5V, +5V, 17V, 12V to Main PWBVs, Va and M5V to Y-SUS, Z-SUSM5V to Control PWB

SMPS OUTPUT VOLTAGES IN RUN

P104

17V

Z Drive Signals

IR, Power LED, Intelligent Sensor

FPCs

FPCs

5V STBY

P103

P214

P111

P211

P112

P116

P114

Drive DataClock (i2c)

P309 Data, Clock (i2c)

P311(V Scan) (5VFG) (FG)

X-PWB-CenterP120 P220 P221 P320P310P210

P121

Va

P5

P2

P110

P812

P813 M5V, Vs, VaNote: Va not used

Note: Va not usedby Y-SUS

P101

P105

P102

P103

P106P1

Note: 17V not usedby Control

17VM5V

FloatingGround

LVDS

3.3V 3.3V 3.3V

FPCs

FPCs

Y DriveLower

Z Drive Signals

5VFG indicates measured from Floating Ground

P313(V Scan) (5VFG) (FG)

5VFG

5VFG

+5V, 12VM5V17V, Va, Vs

3.3VKey Board

Pull Up


(1) Model Name(2) Bar Code(3) Manufacture No.(4) Adjusting Voltage DC, Va, Vs(5) Adjusting Voltage (Set Up / -Vy / Vsc / Ve / Vzb)(6) Trade name of LG Electronics(7) Manufactured date (Year & Month)(8) Warning

Panel Label ExplanationPanel Label Explanation

(9) TUV Approval Mark(10) UL Approval Mark(11) UL Approval No.(12) Model Name(13) Max. Watt (Full White)(14) Max. Volts(15) Max. Amps

(1)(2)(3)(4)(5)(6) (7)

(8)

(9) (10)

(11)(12)

(13)(14)(15)


ADJUSTMENT ORDER “IMPORTANT”DC VOLTAGE ADJUSTMENTS1) SMPS PWB: Va Vs (Always do SMPS first)2) Y-SUS PWB: Adjust –Vy, Vscan, 3) Z-SUS PWB: Adjust ZBiasWAVEFORM ADJUSTMENTS1) Y-SUS PWB: Set-Up, Set-Down

Adjustment OrderAdjustment Order

It is critical that the DC Voltage adjustments be checked when;1) SMPS, Y-SUS or Z-SUS PWB is replaced.2) Panel is replaced, Check Va/Vs since the SMPS does not come with new panel3) A Picture issue is encountered4) As a general rule of thumb when ever the back is removed

Remember, the Voltage Label MUST be followed, it is specific to the

panel’s needs.

All label references are from a specific panel. They are not the same for every panel

encountered.

The Waveform adjustment is only necessary1) When the Y-SUS PWB is replaced2) When a “Mal-Discharge” problem is encountered3) When an abnormal picture issues is encountered

All Adjustments MUST be done in White Wash


SWITCH MODE POWER SUPPLY PWB SECTIONSWITCH MODE POWER SUPPLY PWB SECTION

The following section gives detailed information about the SwitcThe following section gives detailed information about the Switch h Mode Power Supply (SMPS) This board develops voltages for all Mode Power Supply (SMPS) This board develops voltages for all other boards.other boards.

The SMPS outputs the following voltages: The SMPS outputs the following voltages:

•• STBY 5V (StandSTBY 5V (Stand--By), 12V, 17V to the Main board.By), 12V, 17V to the Main board.

•• VS to the YVS to the Y--SUS and ZSUS and Z--SUS boards.SUS boards.

•• VA (through YVA (through Y--SUS) to the X boards for TCPs.SUS) to the X boards for TCPs.

•• M5V to the Control, YM5V to the Control, Y--SUS and ZSUS and Z--SUS boards.SUS boards.

This board has 2 DC adjustments:This board has 2 DC adjustments:

•• 1 (VS) Voltage for Sustain1 (VS) Voltage for Sustain

•• 2 (Va) Voltage for Address 2 (Va) Voltage for Address


The Switch Mode Power Supply Board Outputs to the :

VAY-SUS BoardZ-SUS BoardControl Board

Main Board

VS

M5V

(Va = Voltage for Address)Primarily responsible for Display Panel Vertical Grid (X Boards, TCPs).Va routed to the Y-SUS then to the left X board.

(Vs = Voltage for Sustain)Drives the Display Panel Horizontal Grid (SUS Boards)

(M5V = Monitor 5 volts) Used to develop Bias Voltages on the Y-SUS, Z-SUS and Control Boards.

17V Audio B+ Supply

5V Signal Processing Circuits

Adjustments

There are 2 adjustments located on the Power Supply Board VA and VS. The 5V VCC is pre-adjusted and fixed. All adjustments are made with relation to Chassis Ground. Use “Full White Raster” 100 IRE. Each panel has its own adjustment values for Va and Vs. Use the Panel’s Voltage Label for reference.

VA

VS

RV901

RV501

Switch Mode Power Supply OverviewSwitch Mode Power Supply Overview


P811

P812To

Y-SUS ToZ-SUS

F8014A/250V

P813

ToControl

P814

ToMain

SK101

Fuse F101-215A/250V

F3021A/250V

Vs AdjVR901

Va AdjVR501

Hot Ground Symbol

M5VM5VGndVAVAGndGndNCVSVS

IC701

1

SMPS (Switch Mode Power Supply) PWB LayoutSMPS (Switch Mode Power Supply) PWB Layout

1

1

1

VSVS NCGndGndVAVA GndM5VM5V

1~4 M5V5~8 Gnd


Power Supply Basic OperationPower Supply Basic OperationAC Voltage is supplied to the SMPS Board at Connector SC101 from the AC Input assembly. Standby 5V is developed from 165V source supply (which during run measures 380V measured from the primary fuse F302). This supply is also used to generate all other voltages on the SMPS.

The STBY5V (standby) is B+ for the Sub Micon (IC701) on the SMPS and output at P814 pins 11 and 23 then sent to the Main PWB for Microprocessor (IC1) operation. AC Detect is generated on the SMPS, by rectifying a small sample of the A/C Line at D102 and associated circuitry and routed to the Sub Micon (IC701) where it outputs at pin 15 and sent to P814 pin 18 to the Main Board where it is sensed and monitored by the Main Microprocessor (IC1106). If AC Det is missing the set will not work. The Main Board will be held in Reset until AC Det returns.A new feature included on the side keypad is called a Power Button which opens a ground allowing the “Key On” line of P814 Pin 24 to go high, turning off the 5V STB line defeating the Micro Processor (IC1106) on the Main Board and Remote Control Operation.

When the Microprocessor (IC1106) on the Main Board receives an “ ON “ Command from either the Power button or the Remote IR Signal, it outputs a high called RL ON at Pin 19 of P814. This command causes the Relay Drive Circuit to close both Relays RL102 and RL103 bringing the PFC source up to full power by increasing the 165V standby to 380V run which can be read measuring voltage at Fuse F302 and F801 from “Hot” Ground. At this time the run voltages 12V, and +5V sources become active and are sent to the Main Board via P814 (12V at pins 5 and 6 and 5V at pins 9,10, and 12). The 5V detect line from the Main Board to the SMPS Board can be measured at pin 17 of P814. It is not used.

The next step is for the Microprocessor (IC1106) on the Main Board to output a high on M5V ON Line to the SMPS at P814 Pin 21 which is sensed by the Sub Micon (IC701) turning on the M5V line and output at P811 and P812 pins 9 and 10 to the Y and Z SUS boards and P813 pins 1~4 to the Control board.

Full Power occurs when the Microprocessor (IC1106) on the Main Board brings the VS-ON line high at Pin 20 of P814 of the SMPS Board. VS-ON is routed to the Sub Micon (IC701) which turns on the 17V Audio, VA, and the VS supplies. VA and VS output at P811 to the Y-SUS board and P812 to the Z-SUS board. (VA pins 6 and 7 and VS pins 1 and 2 of either connector) the 17V Audio supply outputs to the Main board at P814 pins 1 and 2.

AUTO GND Pin 22 of P814: This pin is grounded on the Main board. When it is grounded, the Sub Micon IC701 works in the normal mode. Meaning it turns on the power supply via commands sent from the Main board. When this pin is floated (opened), it pulls up and turns the Sub Micon IC701 on in the Auto mode. In this state, the Sub Micon turns on the power supply in stages automatically. A load is necessary to regulate the 17V with the SMPS disconnected. This is a good test if the Main board is suspect.

50PS80 POWER SUPPLY START UP SEQUENCE50PS80 POWER SUPPLY START UP SEQUENCE

44

AC In

Stand By 5V

Power OnRemote Or Key

AC Det.

Reset

Relay On

12V Video

MicroprocessorIC1

M5V Reg

Vs Reg

Va Reg

5V/12V Regulators

5V Det.

5V Reg

StandBy 5V Reg

1

23

67 9 13

At point TV is in Stand-By state. It isEnergy Star Compliant.Less than 1 Watt

6

6

9

In Stand-By Primary side is 163VIn Run (Relay On) Primary side is 386V

4

4

14

14

3.3V Reg

2

5V Det.

Relay On

10

17V 17V17V17V5VFGVa

STBY 5V

M5V M5V M5VVsVaVsVa

15

11 111112

16 16

15

3.3V

12

13

9

15

15 15

5

25

Other

Circuits

Vs

Va

13

14

16 1015 16 10 10

15

15

Standby 5V will not be output if the

Power Button is off.

Power Button

OnOff

Front IRBoard

NotUsed

AC Det.If missing, set turns off within 10 sec.

12V5V

17V Audio

17V

17V Reg

8

+5V HDMI EDIDAnd other input circuits

M5VOn Vs

On

5VFloating

Gnd

14


SMPS AdjustmentsSMPS Adjustments

These two voltages are adjustable and should be adjusted to thecorrect values as indicated by your specific panel label. Example shown on the right.

Set should be in “Full White Raster” and Heat Run 10 Minutes.

1) VS ADJUST:Connect DVM to pin 1 or 2 of P812. Adjust VR901 until the voltage matches your panel’s voltage label.

2) VA ADJUST:Connect DVM to pin 6 or 7 of P812. Adjust VR501 until the voltagematches your panel’s voltage label.

VS and VA adjustment resistors are shown in the drawing below.VR901 is the VS adjustment pot.VR501 is the VA adjustment pot.

50PS80 SMPS STATIC TEST UNDER LOAD50PS80 SMPS STATIC TEST UNDER LOAD

1 2

5

or

8or4 or

Vs

GndCheck Pins 6 or 7

for Va voltage

Note: This SMPS will run without a load, however if the Vs is not loaded, the 17V will pulsate up and down. It is always best to test the SMPS under a load using the 2 light bulbs.

P811

P8141

2

P813

IC701

P812

T301

SC101

10) M5V 9) M5V 8) Gnd 7) VA 6) VA 5) Gnd 4) Gnd 3) NC 2) VS 1) VS

23

24

Check Pins 11 or 23 for 5V SBY

Check Pin 18 for AC Det (5V)

If AC Det is missing, the TV will not come on. It will completely shut down Main board.

Provided the Power Button is closed, any time AC is applied to the SMPS, STBY 5V and AC DET should be present.

10) M5V 9) M5V 8) Gnd 7) VA 6) VA 5) Gnd 4) Gnd 3) NC 2) VS 1) VS 1,2,3,4) M5V

5,6,7,8) Gnd

100W

100W

Pins

Check Pin 9,10,12 for (+5V)

Check Pins 1~4 forM5V

Check Pins 1 or 2 for17V

Check Pins 5 or 6 for12V

P814

P813

P812

Check Pins 1 or 2for Vs voltage

P811

46

Using two 100 Watt light bulbs, attach one end to Vs and the other end to ground. Apply AC to SC101. If the light bulbs turn on and VS is the correct voltage, allow the SMPS to run for several minutes to be sure it will operate under load. If this test is successful and all other voltages are generated, you can be fairly assured the power supply is OK. Note: To be 100% sure, you would need to read the current handling capabilities of each power supply listed on the silk screen on the SMPS and place each supply voltage under the appropriate load.

50PS80 Power Supply Troubleshooting50PS80 Power Supply TroubleshootingUsing two 100 Watt light bulbs, attach one end to Vs and the other end to ground. Apply AC to SC101. If the light bulbs turn on and VS is the correct voltage, allow the SMPS to run for several minutes to be sure it will operate under load. If this test is successful and all other voltages are generated, you can be fairly assured the power supply is OK. Note: To be 100% sure, you would need to read the current handling capabilities of each power supply listed on the silk screen on the SMPS and place each supply voltage under the appropriate load.

This Power Supply can be powered on sequentially for understanding of the operation and for troubleshooting purposes. When the supply is operational in its normal state the Auto Ground line at Pin 22 of P814 is held to ground by the Main Board.When the Power Button is in the off state the Standby 5V Supply will be at 0v, the Key On Line at Pin 24 will be 4.3V. When the Power Button is pressed on, the Key On Line is grounded which allows the 5V Standby to go to 5V.

(A) Grounding both the Auto Gnd and the Key On Lines will allow the supply to be powered up one section at a time. (B) Add a 100Ω ¼ watt resistor from 5V Standby to RL_ON and the 12V and 5V Run Lines will become active. (C) Add a 100Ω ¼ watt resistor from 5V Standby to M5V_ON to make the Main 5V Line operational. (D) Add a 100Ω ¼ watt resistor from 5V Standby to Vs_On to make the 17V, Va and Vs lines operational. (See note at top)

Note: Placing the two 100 Watt light bulbs from Vs to Ground will assure the power supply will regulate with a load and that the 17V will be stable. Without out this load, the 17V will pulsate up and down.

1 2

5

or

8or4 or

Vs

GndP811

P8141

2

P813

U701

P812

T301

SC101


23

24


1,2,3,4) M5V5,6,7,8) Gnd

100W

100W

Pins

P814 31 75 119 1513 1917 21

42 86 1210 1614 2018 22

17V Gnd 12V Gnd +5V

17V Gnd 12V Gnd +5V +5VACDet

KeyOn

STBY 5VGnd

Gnd

Gnd5VDet

AutoGnd

100Ω

23

24

V SO n

B

C

D100Ω

A

100Ω

M5 O

n

Relay O

n

STBY 5V

47


Diode Mode Readings taken with all connectors Disconnected. Black lead on Gnd. DVM in Diode Mode.

P814 Pins ID, Voltages and Diode Mode Measurements for the SMPSP814 Pins ID, Voltages and Diode Mode Measurements for the SMPS

Open3.3V0VM5 ON21

Open5V5VStby 5V23

Open3.3V0VRL On19

1.45V4.8V0V5V Det17*

GndGndGndGnd15

GndGndGndGnd13

Open5.15V5.15VStby 5V11

1.2V5.15V0V+5V9

GndGndGndGnd7

Open12V0V12V5

GndGndGndGnd3

2.2V17.3V0V17V1*

Diode ModeRun STBYLabelPin

OpenGndGndAuto Gnd22

Open*0V*0VKey On24*

Open3.2V0VVS On20

1.45V5V5VAC Det18*

n/cn/cn/cn/c16

GndGndGndGnd14

1.2V5.15V0V+5V12

1.2V5.15V0V+5V10

GndGndGndGnd8

Open12V0V12V6

GndGndGndGnd4

2.2V17.3V0V17V2*

Diode ModeRun STBYLabelPin

P814 CONNECTOR “SMPS" to “Main PWB" P1108

* Pin 24: When the Power Button is opened, • Pin 24 pulls up to 4.3V.• Stand-By 5V turns off. AC-Det remains.

* Pin 1 and 2: 17V If Vs is unloaded will pulsate.Turned on by Vs On Command.

* Pin 18: AC DET if missing will cause the set to be inoperative. Main board held in reset.

* Pin 17: 5V Det not used.

* Pins 9, 10, 12: (+5V) Turned on by Relay On Command.


SK101 and P811 Pin ID and VoltagesSK101 and P811 Pin ID and VoltagesVoltage and Diode Mode Measurements for the SMPS.

0.86V

0.86V

n/c

Open

Open

Gnd

Gnd

n/c

Open

Open

Diode ModeDisconnected

* Note: This voltage will vary in accordance with Panel Label

0.74V5V0VM5V10

0.74V5V0VM5V9

n/cn/cn/cn/c8

Open*65V0VVa7

Open*65V0VVa6

GndGndGndGnd5

GndGndGndGnd4

n/cn/cn/cn/c3

Open*195V0VVs2

Open*195V0VVs1

Diode ModeConnectedRun STBYLabelPin

SK101 AC INPUT

Standby Run Diode ModeConnector Pin Number

SK101 120VAC 120VAC Open1 and 3


P811 CONNECTOR "Power Supply PWB“ to Y-SUS P302


P812 Pin ID and VoltagesP812 Pin ID and VoltagesVoltage and Diode Mode Measurements for the SMPS.

0.86V

0.86V

Gnd

Open

Open

Gnd

Gnd

n/c

Open

Open



0.74V5V0VM5V10

0.74V5V0VM5V9

Gndn/cn/cn/c8

Open*65V0VVa7

Open*65V0VVa6

GndGndGndGnd5

GndGndGndGnd4

n/cn/cn/cn/c3

Open*195V0VVs2

Open*195V0VVs1


Diode Mode Readings taken with all connectors Disconnected, Unless specified. Black lead on Gnd. DVM in Diode Mode.

P812 CONNECTOR "Power Supply PWB“ to Z-SUS P101


P813 Connector Pin ID and VoltagesP813 Connector Pin ID and VoltagesVoltage and Diode Mode Measurements for the SMPS.

GndGndGndGnd8

GndGndGndGnd7

GndGndGndGnd6

GndGndGndGnd5

0.75V5V0VM5V4

0.75V5V0VM5V3

0.75V5V0VM5V2

0.75V5V0VM5V1



P813 CONNECTOR "Power Supply PWB“ to “Control PWB” P2001

NOTE: The Black wire on P813 Connector is not pin 1.

P813


YY--SUS PWB SECTIONSUS PWB SECTION

The following section gives detailed information about the YThe following section gives detailed information about the Y--SUS SUS board. This board develops the board. This board develops the ““Panel Sustain SignalsPanel Sustain Signals”” and delivers and delivers the Luminance signals to the panel. The Ythe Luminance signals to the panel. The Y--SUS board receives the SUS board receives the waveform development signals from the Control board. The Ywaveform development signals from the Control board. The Y--SUS SUS also develops additional voltages via internal switch mode poweralso develops additional voltages via internal switch mode powersupplies. 15V, floating ground 5V, VSC voltages and supplies. 15V, floating ground 5V, VSC voltages and ––Vy voltages.Vy voltages.

This board has 4 adjustments, 2 DC and 2 Waveform:This board has 4 adjustments, 2 DC and 2 Waveform:

Board Receives its main B+ from the:Board Receives its main B+ from the:

• 2 DC: VSC AND –Vy

• 2 Waveform: Set-Up and Set-Dn

• Switch Mode Power Supply sends VS

• Switch Mode Power Supply sends M5V


YY--SUS PWB LayoutSUS PWB Layout

P312

FS901 (5V)4A/125V

Vsc AdjVR901

VSVS NC

GNDGNDVAVANC

M5VM5V

P311

P313

P314

P302

To SMPS

P101To Control

P309

-Vy TPR305

+

-

+-

FS302 (Vs)3A/250V

FS303 (Va)10A/125V

n/c

Logic Signals (in)

Top 6 pins 17.8V (out)

Set-Dn1Adj VR601

-Vy AdjVR902

Set-Up1Adj VR602

P307To Left X

Pins 1~4 Va

ToY DriveUpper

ToY DriveLower

Vsc TPR306

C324 lower legY-SUS drive TP

400V p/pC323 upper leg

Not for Adjustment of the Y-Drive

signal, used to test Y-SUS.

FS301 (M5V)4A/125V

50PS80 (50H3 Panel) Y-SUS PWB LAYOUT50PS80 (50H3 Panel) Y-SUS PWB LAYOUT

54

R305-VY TP VR901

VSCAN

P309

VR601SET-dn1

VR602SET-up1

R306VSC TP

P312

P311

P313

P314 P101

P302

FS302Vs

FS303Va

FS901M5V

P307

VR902DD_Var (-Vy)

(-) (+)

(-)

(+)

FS301M5V


YY--SUS SUS ––Vy and VSC AdjustmentsVy and VSC Adjustments

PROCEDURE: (See figures for locations)

4) Adjust –Vy using VR902. Measured across –Vy TPs R305. Match your specific Panel’s Voltage label ±1V.

1) Pre-Heat unit for at least 10 Minutes before making adjustments. Vs and Va adjustments complete.

2) Place unit into White Wash from the Customer’s Menu for all adjustments.3) Be sure to use all adjustment values as indicated on your panel’s

voltage label in the upper right of the panel. (Example shown above)

5) Adjust VSC using VR901.Measured across VSC TPs R306. Match your specific Panel’s Voltage label ±1V.

Location Bottom Center

-Vy VR902

VSC VR901

VSC TP R306

-Vy TP R305

Location Lower left

Location Lower Center


YY--Drive Signal Test PointsDrive Signal Test Points

Overall signal observed 2mS/div

Highlighted signal from waveform above observed

100uSec/div

Highlighted signal from waveforms above observed

50uS/div

Either test point is OK to use.NOTE: The Waveform Test Points are fragile. If by accident the land is torn and the run lifted, make sure there are no lines left to right in the screen picture.

50uS 510V p/p

Y-Drive PWB Test Points (Middle of bottom

Y-Drive Board)


Observing (Capturing) the YObserving (Capturing) the Y--Drive Signal for SetDrive Signal for Set--up or Setup or Set--downdown

Fig 1:As an example of how to lock in to the Y-Drive Waveform. Fig 1 shows the signal locked in at 2ms per/div.Note the blanking sections.The signal for Set-Up / Down adjustment is outlined within the Waveform

Fig 2:At 100us per/div. the signal for Set-Up / Down adjustment is now easier to recognize. It is outlined within the Waveform

Fig 3:At 50uSec per/division, the adjustment for SET-UP or SET-DOWN can be made.

Note: When actually performing the adjustments,The portion of the waveform being adjusted can beZoomed in on by increasing the speed of the scope.

FIG12mS

FIG2100uS

Outlined AreaBlanking

FIG350uS

Set must be in “WHITE WASH” All other DC Voltage adjustments should have already been made.

Set Up

Set Down

Area tobe adjusted

Area tobe adjusted


YY--SUS (Y Drive Waveform SetSUS (Y Drive Waveform Set--Up and SetUp and Set--Down Adjustments)Down Adjustments)

PROCEDURE: (See figure to the right for locations)

Oscilloscope TP on the “Waveform” TPs on the Y-Drive PWB.

3) SET-UP ADJUSTMENT VR602:Adjust VR602 while observing area (A) and set the flat portion to10uSec ± 5uSec. While observing only the peak of the waveform,turning the pot CW which cause the peak to dome to the left of the flat portion. CCW will cause the peak to decrease in amplitude. Turn CW until the dome appears, then back off CCW.

4) SET-DOWN ADJUSTMENT VR601:Adjust VR601 while observing area (B) and set to 160uSec ± 5uSec.

1) Pre-Heat unit for at least 10 Minutes before making adjustments.Vs, Va, -Vy and VSC adjustments should be completed.

2) Place unit into White Wash from the Customer’s Menu for all adjustments.

Lower Center Of PWB

V Set-Up AdjVR602

V Set-Dn AdjVR601


V Set Up Too High or LowV Set Up Too High or LowAll Waveforms taken at 50V per/div, 50uSec per/div

Ramp (Vset UP) too high

Ramp (Vset UP) too low

Vset DN too high

Vset DN too low

NOTE: If Vset DN too high, this set will go to excessive bright, then shutdown. To correct, remove the LVDS from control PWB and make necessary adjustments.


Block Diagram of Y-Sustain Board Y SUS Block DiagramY SUS Block Diagram

Control Board

Circuits generate Y Sustain Waveform

Distributes 15VGenerated by on board SMPS

Logic signals needed to

generate drive waveform

Distributes VA

Receive M5V, Va, Vsfrom SMPS

Y Drive BoardReceives Scan WaveformDisplay Panel

Power Supply Board - SMPS

FETs amplify Sustain Waveform

Left X Board

Z-SUS Board

Distributes 15V

Generates Floating Ground5V by on board SMPS

Logic signals needed to control buffer outputs. Routed through Y-SUS board.

Operates referenced to Floating Gnd

Center X Board

Right X Board

Vs and M5V

M5V

Generates Vsc and -Vyfrom Vs or M5V by internal SMPS Also controls Set Up/Down via adj.

R, G, B Logic and 3.3V

VA

VA

R, G, BLogic

3.3V

Logic signals needed to generate drive waveformTo Vertical Electrodes

To Horizontal Electrodes


Diode Mode Readings taken with all connectors Disconnected unless specified. Black lead on Gnd. DVM in Diode Mode.

YY––SUS P302 to SMPS P811 Plug InformationSUS P302 to SMPS P811 Plug Information

1.14V

1.14V

Gnd

Open

Open

Gnd

Gnd

n/c

Open

Open


0.74V5VM5V10

0.74V5VM5V9

Gndn/cn/c8

Open*65VVa7

Open*65VVa6

GndGndGnd5

GndGndGnd4

n/cn/cn/c3

Open*195VVs2

Open*195VVs1

Diode ModeConnectedRun LabelPin

P302 CONNECTOR "Y-SUS" to "Power Supply PWB" P811


Voltage and Diode Mode Measurements.Note: There are no Stand-By Voltages to this board.

P302

1



YY--SUS P307 to Left X Drive P121 Plug InformationSUS P307 to Left X Drive P121 Plug Information

GndGndGnd7GndGndGnd6NCNCNC5

Open*65VVA4Open*65VVA3Open*65VVA2Open*65VVA1

Diode ModeRun LabelPin


P307 CONNECTOR "Y-SUS PWB" to "X-Drive” Left P121

Voltage and Diode Mode Measurements.Note: There are no Stand-By Voltages to this board.

1

P307

Top 6 pins are 17V to Control then to Z-SUS Control does not use 17V

DELTA_VY_ON_OFFGND

26

DELTA_VY127

GND28

SET_UP229

GND30

SET_UP131

GND32

SET_DN2333435 GND

41 DELTA_VY242 GND43 ER_UP44 GND45 ER_DN46 GND47 SUS_UP484950 GND

SUS_DNGND

36 SET_DN137 CTRL_OE38 GND39 PASS_TOP40 GND

12345678910111213141516171819202122232425DELTA_VY_ON_OFF

GNDDELTA_VY1

GNDSET_UP2

GNDSET_UP1

GNDSET_DN2

GND

DELTA_VY2GND

ER_UPGND

ER_DNGND

SUS_UP

GNDSUS_DN

GND

SET_DN1CTRL_OE

GNDPASS_TOP

GND

P101Y-SUS PWB

P1Control PWB

0.7VGnd

0.68VGnd0V

Gnd0.1VGnd4.9VGnd

3.48V0V

Gnd1.4VGnd0.7VGnd0.2VGnd0.1VGnd

0.1~0.4VGnd4V

Gnd

1 15V2 15V3 15V4 15V5 15V6 15V7 NC8 OC2_ODD9 GND

10

CLK11

GND12

DATA_ODD13

GND14

DATA_EVEN151617

STB18

GND1920

GNDGND

OC2_EVEN2122 GND

GND23OC1_EVEN24GND25

OC1_ODDGND

26272829303132333435

41424344454647484950

3637383940

15V15V15V15V15V15VNC

OC2_ODDGND

CLKGND

DATA_ODDGND

DATA_EVEN

STBGND

GNDGND

OC2_EVENGNDGND

OC1_EVENGND

OC1_ODDGND

P101Y-SUS PWB

P1Control PWB

17.8V17.8V17.8V17.8V17.8V17.8V

NC2.84VGnd

1.87VGnd0.3VGnd0V

Gnd0V

GndGnd4.3VGnd2.8VGndGnd

1.85VGnd

Top 25 Pins Bottom 25 Pins

Pin 50 on Y-SUS is Pin 1 on Control Y-SUS P101 to Control P1 Connector Layout

Y-SUS P101 to Control P1 Connector Layout

63


1.44V1.85VOC1_EVEN24

GndGndGND23

GndGndGND22

1.44V2.8VOC2_EVEN21

GndGndGND20

GndGndGND25

1.44V4.3VSTB19

GndGndGND18

GndGndGND17

1.44V0VDATA_EVEN16

GndGndGND15

1.44V0VDATA_ODD14

GndGndGND13

1.44V0.3VCLK12

GndGndGND11

1.44V1.87VOC1_ODD10

GndGndGND9

1.44V2.84VOC2_ODD8

NCNCNC7

Open17.8V15V6

Open17.8V15V5

Open17.8V15V4

Open17.8V15V3

Open17.8V15V2

Open17.8V15V1


1.44V0.1VER_DN45

GndGndGND46

1.44V0.1~0.4VSUS_UP47

GndGndGND48

1.44V4VSUS_DN49

GndGndGND50

GndGndGND44

1.44V0.2VER_UP43

GndGndGND42

1.44V0.7VDELTA_VY241

GndGndGND40

1.44V1.4VPASS_TOP39

GndGndGND38

1.44V0VCTRL_OE37

1.44V3.48VSET_DN136

GndGndGND35

1.44V4.9VSET_DN234

GndGndGND33

1.44V0.1VSET_UP132

GndGndGND31

1.44V0VSET_UP230

GndGndGND29


GndGndGND27

1.44V0.7VDELTA_VY_ON_OFF26


YY--SUS P101 to Control P1 Connector InformationSUS P101 to Control P1 Connector Information Pin 1 on Control is Pin 50 on Y-SUS

Voltage and Diode Mode Measurement (No Stand-By Voltages)


Y Y SUSSUS Floating Ground 5V (5VFG) and Scan Input CheckFloating Ground 5V (5VFG) and Scan Input Check

Black Lead: 0.76VBlack Lead: 0.76V Red Lead: OpenRed Lead: Open

Checked from Floating Gnd.Checked from Floating Gnd.YY--Drive boards connected.Drive boards connected.

YY--SUS SUS P311P311

YY--SUS SUS P313P313

Floating Floating GroundGround

5V FG5V FG

VSCANVSCANn/cn/c


5V FG5V FG

VSCANVSCANn/cn/c

5V FG:5V FG:

VSCAN:VSCAN:

Diode Check means the Digital Volt Meter is in Diode Mode.

1

1

Red Lead: 0.6VRed Lead: 0.6VBlack Lead: 0.5VBlack Lead: 0.5V

••Note: All connectors going to the YNote: All connectors going to the Y--SUS board are fragile.SUS board are fragile.

••P114, P116, P214 and P216. P114, P116, P214 and P216.

••Removing and reinserting the drive board or the YRemoving and reinserting the drive board or the Y--SUS can SUS can cause an intermittent connection or cold connection. cause an intermittent connection or cold connection.

••Investigate these connectors carefully after replacing either Investigate these connectors carefully after replacing either the Ythe Y--SUS or Upper or Lower YSUS or Upper or Lower Y--Drive boards and resolder if Drive boards and resolder if necessary.necessary.


Diode Mode Readings taken with all connectors Disconnected. Black lead on Floating Gnd. DVM in Diode Mode.

YY--SUS Connectors P311 SUS Connectors P311 –– P314 to YP314 to Y--Drive InformationDrive Information

FGndFGnd*FGnd6~12

1.3V5V5VFG4~5

n/cn/cn/c3

2.7V140VVScan1~2


Note: All Voltage Measurement taken from Floating Ground

2.7V140VVScan11~12

n/cn/cn/c10

1.3V5V5VFG8-9

FGndFGnd*FGnd1~7


Voltage and Diode Check Measurements.This board has no Stand-By voltage.

All Pins are Floating Ground

P312 CONNECTOR “Y-SUS to “Upper Y-Drive " P114


P314 CONNECTOR “Y-SUS”to “Lower Y-Drive " P216

P313 CONNECTOR “Y-SUS " to “Lower Y-Drive " P214

* Note: (FGnd) Floating Ground

P311 CONNECTOR “Y-SUS " to “Upper Y-Drive " P116



Y DRIVE UPPER AND LOWER PWB SECTIONY DRIVE UPPER AND LOWER PWB SECTION

The following section gives detailed information about the Y Drive boards (Upper and Lower). These boards deliver the “Y Drive Sustain Signals” to the Panel’s horizontal electrodes, (This determines the Vertical resolution of the panel). Each Y Drive board contains 6 buffers (12 total) driving 8 flexible ribbon cables connecting 1080 horizontal electrodes.These boards have no DC adjustments.

These boards receives their main B+ from the YThese boards receives their main B+ from the Y--SUS PWB:SUS PWB:

•• Floating ground 5V from the Switched Mode Power Floating ground 5V from the Switched Mode Power Supply on the YSupply on the Y--SUS board.SUS board.(Must be measured from the Floating Ground). (Must be measured from the Floating Ground).

•• Y Scan signal (over 500V peak/peak from the YY Scan signal (over 500V peak/peak from the Y--SUS board.SUS board.

•• Logic signals from the Control board, routed through YLogic signals from the Control board, routed through Y--SUS.SUS.


Y Drive Upper and Lower PWB LayoutY Drive Upper and Lower PWB Layout

Y Drive UpperY Drive Upper

P112P112

P111P111

P114P114

P116P116

P101P101

P102P102

P103P103

P104P104

FPCFPC

FPCFPC

FPCFPC

FPCFPC

Y Drive LowerY Drive Lower

P214P214

P216P216

P211P211

P201P201

P202P202

P203P203

P204P204

FPCFPC

FPCFPC

FPCFPC

FPCFPC

Note: All connectors Note: All connectors going to the Ygoing to the Y--SUS SUS board are fragile.board are fragile.

P114, P116, P114, P116, P214 and P216. P214 and P216.

Removing and Removing and reinserting the drive reinserting the drive

board or the Yboard or the Y--SUS can SUS can cause an intermittent cause an intermittent

connection or cold connection or cold connection. connection.

Investigate these Investigate these connectors carefully connectors carefully after replacing either after replacing either the Ythe Y--SUS or Upper SUS or Upper

or Lower Yor Lower Y--Drive Drive boards and resolder boards and resolder

if necessary.if necessary.


Y Drive Upper and Lower PWB Connector InformationY Drive Upper and Lower PWB Connector Information

Y Drive UpperY Drive Upper Y Drive LowerY Drive Lower

P112P112

P111P111

P114P114

P116P116

P214P214

P216P216

P211P211

All control signals All control signals input from Yinput from Y--SUSSUS

All control signals for All control signals for lower drive boardlower drive board

Y Drive (V Scan) signal in Y Drive (V Scan) signal in on bottom two pins 1 and 2.on bottom two pins 1 and 2.

Y Drive (V Scan) signalY Drive (V Scan) signalin on top two pins 11 and 12.in on top two pins 11 and 12.

All Pins Floating GroundAll Pins Floating Ground

All Pins Floating GroundAll Pins Floating Ground

Floating Ground 5V pins 8 and 9Floating Ground 5V pins 8 and 9

Floating Ground 5V Floating Ground 5V pins 4 and 5.pins 4 and 5.

All control signals for All control signals for lower Y Drive boardlower Y Drive board


Y Drive Upper and Lower PWB Chocolate Piece LocationsY Drive Upper and Lower PWB Chocolate Piece Locations

Y Drives RemovedY Drives Removed

ChocolateChocolate

Chocolate pieces are behind Chocolate pieces are behind both Yboth Y--Drive boards.Drive boards.

Pay attention and make sure Pay attention and make sure to replace these pieces if the to replace these pieces if the board is removed.board is removed.

Note: When removing either Note: When removing either YY--Drive board, these Drive board, these Chocolate pieces will Chocolate pieces will ““StickStick””making the board feel as making the board feel as thought its still attached.thought its still attached.

Note the PWB standNote the PWB stand--off. The off. The top of the standtop of the stand--off has a off has a collar which enters the PWB collar which enters the PWB screw hole. The board must screw hole. The board must be lifted up slightly to clear be lifted up slightly to clear these collars before it can be these collars before it can be removed.removed.

ChocolateChocolate

StandStand--OffOff


Y Drive Removing the Flexible Printed CircuitsY Drive Removing the Flexible Printed Circuits

Flip the locking tab up Flip the locking tab up to unlock the FPC from to unlock the FPC from the connectorthe connector

Slide a thin plastic Slide a thin plastic object under either end object under either end of the FPC and lift up of the FPC and lift up gently releasing the tab.gently releasing the tab.

TabTab

TabTab

Gently pull the FPC Gently pull the FPC from the connector.from the connector.

When reinserting the When reinserting the FPC, make certain that FPC, make certain that both tabs are seated both tabs are seated correctly before correctly before attempting to lockattempting to lock

Gap (Tab exposed)Gap (Tab exposed)

No Gap (Tab seated)No Gap (Tab seated)


Y Drive Floating Ground 5V and Scan Input CheckY Drive Floating Ground 5V and Scan Input Check

BL: 0.76VBL: 0.76V RLRL: Open: OpenDiode Mode Check: All checks from Floating Gnd.

BL = Black Lead on test point red lead on FG.RL= Red Lead on test point black lead on FG.

Checked from Floating GndChecked from Floating Gnd

Y Drive Upper P116Y Drive Upper P116 Y Drive Upper P214Y Drive Upper P214


5V FG5V FG

VSCANVSCANn/cn/c


5V FG5V FG

VSCANVSCANn/cn/c

BL: 0.60VBL: 0.60V RLRL: Open: Open5V FG5V FG

VSCANVSCAN

Diode Check means the Digital Volt Meter is in Diode Mode, all connectors to PWB are removed.

11

These are These are fragile fragile

connectionsconnections

These are These are fragile fragile

connectionsconnections


Diode Mode Readings taken with all connectors Disconnected. Black lead on Floating Gnd. DVM in Diode Mode.

Y Drive Connectors P116 Y Drive Connectors P116 –– P214 to YP214 to Y--SUS InformationSUS Information

FGndFGnd*FGnd6~12

Open5V5VFG4~5

n/cn/cn/c3

Open140VVScan1~2


Note: All Voltage Measurement taken from Floating Ground

Open140VVScan11~12

n/cn/cn/c10

Open5V5VFG8-9

FGndFGnd*FGnd1~7


Voltage and Diode Check Measurements.This board has no Stand-By voltage.


P114 CONNECTOR Upper"Y-Drive" to “Y-SUS" P312


P216 CONNECTOR Lower"Y-Drive" to “Y-SUS" P314

P214 CONNECTOR “Lower Y-Drive" to “Y-SUS" P313


P116 CONNECTOR “Upper Y-Drive" to “Y-SUS" P311



Y Drive Upper P111 CheckedY Drive Upper P111 Checked

8

7

Floating GroundFloating Ground

12

Bottom of PWBBottom of PWB

Same as 6

below

4 6

3 5

OC1-T-B-Even

OC2-T-Odd

CLK-T

STB-T

OC2-T-Even

OC1-T-B-OddOC1-T-B-Even

OC2-T-Odd

CLK-T

STB-T

OC2-T-Even

Data-Even

Data-Odd

OSC1-T-B-Odd

Scan (Y Drive Signal)Scan (Y Drive Signal)

5V Floating Ground5V Floating GroundBL: 0.6VBL: 0.6V RLRL: Open: Open

Diode Mode Check: All checks from Floating Gnd.


BL: 0.76VBL: 0.76V RLRL: Open: Open

BL: 0.87VBL: 0.87V

BL: 0.87VBL: 0.87V

BL: 0.85VBL: 0.85V

BL: 0.85VBL: 0.85V

BL: 0.87VBL: 0.87V

BL: 0.84VBL: 0.84V

BL: 0.84VBL: 0.84V

BL: 0.87VBL: 0.87V

BL: 0.87VBL: 0.87V

BL: 0.87VBL: 0.87V

BL: 0.85VBL: 0.85V

BL: 0.85VBL: 0.85V

BL: 0.84VBL: 0.84V

BL: 0.87VBL: 0.87V

All readings Open with All readings Open with RLRL

All All readings readings

Open Open with with RLRL

P111P111

1 1

22

33

44

55

66

7 7

8 8

BL: OpenBL: Open

BL: OpenBL: Open

BL: OpenBL: Open

BL: OpenBL: Open

BL: 0.87VBL: 0.87V

BL: 0.87VBL: 0.87V

Reading will varyReading will vary

Reading will varyReading will vary


Same as 5

below


Y Drive Upper P211 CheckedY Drive Upper P211 Checked


2

1

Top of PWBTop of PWB

1) Data-Even

2) Data-Odd

3) OC1-T-B-Odd

4) OC1-T-B-Even

5) STB-B

6) CLK-B

7) OC2-B-Odd

8) OC2-B-Even

ScanScan

5V Floating Ground5V Floating GroundBL: 0.6VBL: 0.6V RLRL: Open: Open




BL: 0.84VBL: 0.84V

BL: 0.84VBL: 0.84V

BL: 0.87VBL: 0.87V

BL: 0.87VBL: 0.87V

BL: 0.84VBL: 0.84V

BL: 0.84VBL: 0.84V

BL: 0.87VBL: 0.87V

BL: 0.87VBL: 0.87V


P211P211

8



Y Drive Buffer Output CheckY Drive Buffer Output Check




Checking any pin Checking any pin from Floating Gndfrom Floating Gnd


Buffer OutputBuffer Output

Pins BottomPins Bottom

SideSide

Buffer FGBuffer FG

Note: The buffer output pins Note: The buffer output pins identified on the left are actually the identified on the left are actually the bottom connections on the Flexible bottom connections on the Flexible Ribbon Cable to the Panel (FPC). The Ribbon Cable to the Panel (FPC). The top connections to the FPC are on top top connections to the FPC are on top of the board as shown on the right.of the board as shown on the right.

Back Side of Y Drive boardBack Side of Y Drive board Front Side of Y Drive boardFront Side of Y Drive board

BufferBuffer

OutputOutput

PinsPins

TopTop

SideSide

68 pins68 pins67 pins67 pins

135 Total Output Pins 135 Total Output Pins per FPCper FPC

12 FPC connections12 FPC connections

1080 Total Horizontal 1080 Total Horizontal electrodes establishing electrodes establishing vertical pixel countvertical pixel count


ZZ--SUS PWB SECTIONSUS PWB SECTION

The following section gives detailed information about the The following section gives detailed information about the ZZ--SUS board. The ZSUS board. The Z--SUS board develops the SUS board develops the ““Panel Erase Panel Erase Sustain SignalsSustain Signals””..

This board has one DC adjustment (ZThis board has one DC adjustment (Z--Bias)Bias)

Board Receives its main B+ from the:Board Receives its main B+ from the:

•• VS from the Switched Mode Power SupplyVS from the Switched Mode Power Supply

•• 15V from the Control board but developed on the 15V from the Control board but developed on the YY--SUS boardSUS board


ZZ--SUS PWB LayoutSUS PWB Layout

+

-

Z-BiasAdj VR201

P312To SMPS

P103To Z-Sub

Z Bias TPR457

Top Side toChassis Gnd

P301nc

P100To Control

VSVS NC

GNDGNDVAVANC

M5VM5V

Pins1~4

17.8V

FS102 (Vs)3A/250V

FS100 (5V)4A/125V

P104To Panel

P102To Panel

Z Drive TPFL103

NoIPMs

NoIPMs

Z-SUS


ZZ--SUS PWB AdjustmentSUS PWB Adjustment

PREPARATION:

1) Pre-Heat unit for at least 10 Minutes before making adjustments.2) Place unit into White Wash from the Customer’s Menu for all adjustments.3) Be sure to use all adjustment values as indicated on the panel

voltage label in the upper right hand corner of the panel. (Example above)

PROCEDURE: (See preceding page for locations)

4) Place DC Volt meter on VZB TP(Top of R457 to Chassis Gnd).

5) Adjust VZB (Z Bias) VR201 to match your specific Panel’s voltage label.

Z-BiasADJ

VR201

Z-Bias TPTop of R457 to Chassis Gnd

Lower Right Side Of PWB


ZZ--SUS PWB Comparing to YSUS PWB Comparing to Y--SUS During ResetSUS During Reset

PURPOSE: To show the timing between Y-SUS and Z-SUS

From the Waveform it can be seen that the timing of the Z-SUS must align to the Y-SUS for the panel to work correctly.

If the timing is out of sync, the Control board is at fault.

Note: While making adjustments to the Ramp Up and/or Rame Down portion of the Y-Drive signal, the Control board makes the same adjustments to the Z-SUS waveform.


ZZ--SUS PWB Testing without YSUS PWB Testing without Y--SUSSUS

PREPARATION:

1) The Power Supply must be working normally under Light Bulb test.

2) Leave the Light Bulbs in place for the following test.

3) Jump the 17V from pin 1 or pin 2 P814 to the Z-SUS connector P100 1~5.

4) Place the Scope on the Z-SUSwaveform Test Point FL103.

5) Confirm there is an Output from the Z-SUS PWB (approximate 230V p/p)

This test confirms that the Power Supply,Control Board and Z-SUS boards are all working OK.

Light bulbs must remain connected to the Vs from the Power Supply to Gnd.

Failure to do so, will cause the 17V to fluxuate and cause the Z-SUS to shutdown.


ZZ--SUS P101 Connector Pin ID and VoltagesSUS P101 Connector Pin ID and Voltages

Voltage and Diode Mode Measurements for the Z-SUS PWB.This board has no Stand-By voltages.

Diode Mode Readings taken with all connectors Disconnected unless specified. Black lead on Gnd. DVM in Diode Mode.

P101 CONNECTOR "Z-SUS PWB” to Power Supply P812

Open

Open

Gnd

Open

Open

Gnd

Gnd

n/c

Open

Open


0.74V5VM5V10

0.74V5VM5V9

Gndn/cn/c8

Open*65VVa7

Open*65VVa6

GndGndGnd5

GndGndGnd4

n/cn/cn/c3

Open*195VVs2

Open*195VVs1



1

P101


P100 Pin ID and VoltagesP100 Pin ID and Voltages

OpenGndGnd10

Open0.4VSUS-UP11

Open0.7VSUS-DN12

Open3VZ Bias9

GndGndGnd8

Open0VER-DN7

Open0VER-UP6

Open0VCTRL-OE5

1.9V17.8V15V4

1.9V17.8V15V3

1.9V17.8V15V2

1.9V17.8V15V1



P100 CONNECTOR "Z-SUS PWB” to “Control Board” P2

1

Note: Black wire is NOT pin 1.Voltage and Diode Mode Measurements for the Z-SUS PWB.This board has no Stand-By voltages.


CONTROL BOARD (LOGIC) SECTIONCONTROL BOARD (LOGIC) SECTION

The following section gives detailed information about the ContrThe following section gives detailed information about the Control board. ol board. The control board develops all The control board develops all ““Panel Drive SignalsPanel Drive Signals””. This signal is . This signal is developed from software stored in the boarddeveloped from software stored in the board’’s ROM.s ROM.

This board has no adjustment. This board has no adjustment.

The Auto Generator is located on this board which The Auto Generator is located on this board which (when pins 1 and 2 of P6 are jumped together) will product a pat(when pins 1 and 2 of P6 are jumped together) will product a pattern on the tern on the screen for testing purposes. This can be done without the Main bscreen for testing purposes. This can be done without the Main board oard delivering LVDS video to confirm if the problem lies with the Madelivering LVDS video to confirm if the problem lies with the Main board or in board or the panel and its boards.the panel and its boards.

The Control Board Receives its main B+ from the:The Control Board Receives its main B+ from the:

•• 5V from the Switched Mode Power Supply, 5V from the Switched Mode Power Supply, (Pins 1 through 4 of P200).(Pins 1 through 4 of P200).

•• The Control board does receive 15V from the YThe Control board does receive 15V from the Y--SUS, but simply SUS, but simply passes this voltage on to the Zpasses this voltage on to the Z--SUS board.SUS board.

•• Generates 3.3V and routes this voltage down to the two X BoardGenerates 3.3V and routes this voltage down to the two X Boards.s.


Control Board LayoutControl Board Layout

P1To Y-SUS

Pins 9~12 17.8V

P2To Z-SUS

IC7

IC1P101To Left X

Top 6 pins17.8V (in)

P102To Center X

P104To Right X

P5LVDS

P200To SMPSP202

n/c

IC16IC304

P6Auto GenShort 1~2

IC12

Pins 1~45V

P3n/c

X2 50Mhz

FL4 (5V) FL5 (5V)

D7Data

D6Temp

1

1 1

3.3VFOR TCPs

Pins 1~4To each X Board

Pins 1~43.3V Pins 1~4

3.3V

Pins 1~43.3V


Control Board (EMI Filter) ExplainedControl Board (EMI Filter) Explained

FL4 (5V) FL5 (5V)

The two EMI Filters just below P200 are surface mount mini devices which shunt high frequencies to ground. They have 4 pins. The top and bottom are the B+ route, the two side solder points are Chassis Gnd.

Gnd

5V

Gnd

5V

FL4 or FL5(5V EMI filters)

P200

1NOTE: The Black wire on P200 Connector is not pin 1.


Control Board Regulator ChecksControl Board Regulator Checks

IC16IC304

IC12

P200To SMPS

Pins 1~4 (5V)

FL4 (5V) FL5 (5V)

3.3V

5V

0V

5V

2.5V 0V

3.3V

5V0V

IC7

3.3V

5V

0V

If the M5V input from P200 is missing, the Control board can stiIf the M5V input from P200 is missing, the Control board can still be tested. If the ll be tested. If the SMPS is developing STBY 5V, the STBY 5V can be jumped to any 5V SMPS is developing STBY 5V, the STBY 5V can be jumped to any 5V point on the point on the Control board. Confirm that LED D6 and LED D7 are illuminated orControl board. Confirm that LED D6 and LED D7 are illuminated or blinking, if they blinking, if they are, the board is most likely OK.are, the board is most likely OK.

D7Data

D6Temp

P2To Z-SUS

Pins 9~12 (15V)


Control Board Crystal X2 CheckControl Board Crystal X2 Check

50Mhz 4V P/P

Use bottom left leg of Crystal


Basic Diagram of Control Board

To X-DriveLeft Board

To X-DriveRight Board

To X-DriveCenter Board

This Picture shows Signal Flow Distribution to help determine the failure depending on where the problem shows on the screen.

The Control Board supplies Video Signals to the TCP (Tape Carrier Package) ICs.

If there is a bar defect on the screen, it could be a Control Board problem.

MCM

16 bit

256 Lines output Total

Control Board to X Board Address Signal Flow

IC1

Control PWB Signal BlockControl PWB Signal Block

MCM

IC1

DRAM

2 Buffers per TCP

CONTROL PWB

X-DRIVE PWB

PANEL

128 Lines per Buffer

EEPROM23 Total TCPs

5888 Line Outputs

RGB per/Pixel

5888 / 3 = 1962

1920 actual(42 pin outputs not used)

Resistor Array

TCP


Control Board LVDS P5 ConnectorControl Board LVDS P5 ConnectorLVDS Cable Connector Removal

Press Inward

Press Inward

P6 Auto Gen: Jump pin 1 to 2, a series of patterns will be produced on screen.

1

The pin connections on the LVDS plug are too closetogether for safe readings, use Test Points. To remove theLVDS cable, press the two locking tabs inward, then rockthe connector side to side while pulling out on theconnector.

If a video problem is encountered, to eliminate all Panelboards, remove the LVDS cable and then jump the Auto Genconnector pin 1 and 2. If the picture is OK, the Power Supply,Y-SUS, Z-SUS, Y-Drives, X-Boards, TCPs and the Panel areOK. And most likely the Control board is OK too.


Control Board LVDS P5 Connector Voltages and Diode CheckControl Board LVDS P5 Connector Voltages and Diode Check

1.3V0V23

1.3V0V20

1.3V0V22

1.3V1.2V17

1.3V1.2V19

1.3V1.3V15

1.3V1.1V16

1.3V1.1V23

1.3V1.0V14

1.3V1.1V13

1.3V1.2V12

1.3V1.2V6

1.3V1.1V5

1.3V1.2V6

1.3V1.1V5

1.3V0V3

1.3V0V2

Diode ModeRun Pin

1515

55

22Open3.3V42

Open3.3V40

Open3.3V41

Open1.1V38

Open1.2V39

1.3V1.1V35

1.3V1.2V36

Open0.58V43

1.3V1.2V33

1.3V1.1V32

1.3V1.1V31

1.3V1.2V30

1.3V1.1V29

1.3V1.2V28

1.3V1.2V27

1.3V1.1V26

1.3V1.2V25

Diode ModeRun Pin

P5 Connector "Control Board” to “Main PWB” P203

Note: There are no voltages in Stand-By mode.

GndGnd

P5

20202525

30303535

4040

5151

GndGnd

Pins 7~10, 47~51 are n/cPins 1, 11, 18, 21, 34, 37, 44~46 are Gnd

Blue Pins indicate 24 bit(12 bit differential) video signal


Control Board P2 Connector Pin ID and VoltagesControl Board P2 Connector Pin ID and VoltagesVoltage and Diode Mode Measurements for the Control PWB.Note: There are no voltages in Stand-By mode.

1.32V17.8V15V10

1.32V17.8V15V11

1.32V17.8V15V12

1.32V17.8V15V9

1.4V0VCTRL-OE8

1.48V0VER-UP7

1.48V0VER-DN6

GndGndGnd5

1.48V3VZ Bias4

1.49VGndGnd3

1.49V0.4VSUS-UP2

1.49V0.7VSUS-DN1



P2 CONNECTOR " Control Board” to “Z-SUS PWB” P100

11

P2 LabelP2 Label

17.8V17.8V

P2


Control Board P200 Connector Pin ID and VoltagesControl Board P200 Connector Pin ID and Voltages

Gnd

Gnd

Gnd

Gnd

0.92V

0.92V

0.92V

0.92V


GndGndGnd8

GndGndGnd7

GndGndGnd6

GndGndGnd5

0.75V5VM5V4

0.75V5VM5V3

0.75V5VM5V2

0.75V5VM5V1


Diode Mode Readings taken with all connectors Disconnected, (Unless Specified). Black lead on Gnd. DVM in Diode Mode.

P200 CONNECTOR "Control PWB “ to “Power Supply PWB” P813

1

Voltage and Diode Mode Measurements for the Control PWB.Note: There are no voltages in Stand-By mode.

NOTE: The Black wire on P200 Connector is not pin 1.

P200

1 15V2 15V3 15V4 15V5 15V6 15V7 NC8 OC2_ODD9 GND10

CLK11

GND12

DATA_ODD13

GND14

DATA_EVEN151617

STB18

GND1920

GNDGND

OC2_EVEN2122 GND

GND23OC1_EVEN24

DELTA_VY_ON_OFFGND25

GND26

DELTA_VY127

GND28

SET_UP229

GND30

SET_UP131

GND32

SET_DN2333435 GND

41 DELTA_VY242 GND43 ER_UP44 GND45 ER_DN46 GND47 SUS_UP484950 GND

SUS_DNGND

36 SET_DN137 CTRL_OE38 GND39 PASS_TOP40 GND

OC1_ODDGND

1234567891011121314151617181920212223242526272829303132333435

41424344454647484950

3637383940

15V15V15V15V15V15VNC

OC2_ODDGND

CLKGND

DATA_ODDGND

DATA_EVEN

STBGND

GNDGND

OC2_EVENGNDGND

OC1_EVEN

DELTA_VY_ON_OFFGND

GNDDELTA_VY1

GNDSET_UP2

GNDSET_UP1

GNDSET_DN2

GND

DELTA_VY2GND

ER_UPGND

ER_DNGND

SUS_UP

GNDSUS_DN

GND

SET_DN1CTRL_OE

GNDPASS_TOP

GND

OC1_ODDGND

P101Y-SUS PWB

P1Control PWB

17.8V17.8V17.8V17.8V17.8V17.8V

NC2.84VGnd

1.87VGnd0.3VGnd0V

Gnd0V

GndGnd4.3VGnd2.8VGndGnd

1.85VGnd0.7VGnd

0.68VGnd0V

Gnd0.1VGnd4.9VGnd

3.48V0V

Gnd1.4VGnd0.7VGnd0.2VGnd0.1VGnd

0.1~0.4VGnd4V

Gnd

Pin 1 on Control isPin 50 on Y-SUS

Control P1 to Y-SUS

P101 Plug Information

Control P1 to Y-SUS

P101 Plug Information

94

Voltage Measurements for the Control PWB. Note: There are no voltages in

Stand-By mode.


1.44V1.85VOC1_EVEN24

GndGndGND23

GndGndGND22

1.44V2.8VOC2_EVEN21

GndGndGND20

GndGndGND25

1.44V4.3VSTB19

GndGndGND18

GndGndGND17

1.44V0VDATA_EVEN16

GndGndGND15

1.44V0VDATA_ODD14

GndGndGND13

1.44V0.3VCLK12

GndGndGND11

1.44V1.87VOC1_ODD10

GndGndGND9

1.44V2.84VOC2_ODD8

NCNCNC7

Open17.8V15V6

Open17.8V15V5

Open17.8V15V4

Open17.8V15V3

Open17.8V15V2

Open17.8V15V1


1.44V0.1VER_DN45

GndGndGND46

1.44V0.1~0.4VSUS_UP47

GndGndGND48

1.44V4VSUS_DN49

GndGndGND50

GndGndGND44

1.44V0.2VER_UP43

GndGndGND42


GndGndGND40

1.44V1.4VPASS_TOP39

GndGndGND38

1.44V0VCTRL_OE37

1.44V3.48VSET_DN136

GndGndGND35

1.44V4.9VSET_DN234

GndGndGND33

1.44V0.1VSET_UP132

GndGndGND31

1.44V0VSET_UP230

GndGndGND29


GndGndGND27

1.44V0.7VDELTA_VY_ON_OFF26


Control P1 to YControl P1 to Y--SUS P101 Plug InformationSUS P101 Plug Information Pin 1 on Control is Pin 50 on Y-SUS.Note: There are no voltages in Stand-By mode


P101 Connector "Control BoardP101 Connector "Control Board”” to to ““Left X PWBLeft X PWB”” P110P110

0.97V1.27V24

0.97V1.0V26

0.97V1.27V27

0.97V1.0V28

0.97V1.27V29

0.97V1.0V31

0.97V1.0V23

0.97V1.0V20

0.97V1.27V21

0.97V1.0V18

0.97V1.27V19

0.97V1.0V15

0.97V1.27V16

0.97V1.27V32

0.97V1.27V14

0.97V1.0V13

0.97V1.27V12

Documents

50PS80 Plasma Displaydiagramas.diagramasde.com/televisores/50PS80-Fall-2009-v...4 August 2009 Plasma 50PS80 IMPORTANT SAFETY NOTICE The information in this training manual is intended