LG 50PS60 Series Installation guide

Advanced Single Scan Troubleshooting
Training Manual
50PS60 Plasma Display
50PS60 Plasma Display
July 2009

TOPICS
PRELIMINARY ........................................ 2
Outline .......................................................... 2
Overview ...................................................... 3
Safety Notice and Cautions .......................... 4
ESD Notice .................................................. 5
Regulatory Info. ............................................ 5
Contact Information ..................................... 6
Handling and Safety ..................................... 7
Basic Troubleshooting Steps ........................ 8
PRODUCT INFORMATION ................... 9
Feature List .................................................. 10
Product Logos .............................................. 12
600Hz Sub Field Driving ............................. 15
Remote Control ............................................ 17
Accessing Service Menu .............................. 18
Rear and Side Inputs .................................... 19
Software Download Screen .......................... 20
Dimensions .................................................. 21
DISASSEMBLY ......................................... 22
Back Cover Removal ................................... 23
Circuit Board Layout ................................... 24
Power supply board Removal ...................... 25
Main board Removal .................................... 26
Control board Removal ................................ 27
50PS60 TABLE OF CONTENTS
TOPICS
DISASSEMBLY continued
Y-SUS board Removal ................................. 28
Top Y-Drive board Removal ........................ 29
Bottom Y-Drive board .................................. 30
Z-SUS board Removal ................................. 31
Ft Control board Removal ............................ 32
X-Board Removal Text ................................33
X-Board Removal ......................................... 34
TROUBLESHOOTING ............................. 35
Signal and Voltage Block Diagram ..............36
Panel Label Explained ..................................37
Adjustment Order **Important** ................. 38
Power Supply ............................................... 39
Y-Sustain ...................................................... 51
Y-drive Upper and Lower .............................67
Z-SUS board .................................................77
Control board ................................................ 84
X-Drive boards ............................................. 99
Main (Digital) board ..................................... 112
Ft Control (IR) ..............................................129
Side Key .......................................................137
11 X 17 Foldout Section ............................. 139
Page 1

2Fall 2009 1080P Plasma 50PS60
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
OUTLINE
OUTLINE
• Power Button (Front Key Board)
NEW
Receives its 5V from Power Supply, not Y-SUS
Turns off the SMPS via Key On line.
NEW

3Fall 2009 1080P Plasma 50PS60
50PS60 Plasma Display
Section 1
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 Discussed
Overview of Topics to be Discussed

4Fall 2009 1080P Plasma 50PS60
IMPORTANT SAFETY NOTICE
IMPORTANT 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.
CAUTION
CAUTION
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)

5Fall 2009 1080P Plasma 50PS60
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 INFORMATION
REGULATORY 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 NOTICE
ESD NOTICE (Electrostatic Static Discharge)
(Electrostatic Static Discharge)

6Fall 2009 1080P Plasma 50PS60
Also available on the
Also available on the
Plasma page
Plasma page New Training Materials on
New Training Materials on
the Learning Academy site
the Learning Academy site
6
CONTACT INFORMATION
CONTACT INFORMATION
Customer Service (and Part Sales) [phone]
Technical Support (and Part Sales) [phone]
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, 47LG90
42PG20, 42PQ20, 42PQ30, 50PG20, 50PS80, 50PS60
LCD-DV:
PLASMA:
Plasma Panel
Alignment Handbook

7Fall 2009 1080P Plasma 50PS60
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
SECTION 1:
SECTION 1: PLASMA OVERVIEW PLASMA OVERVIEW

8Fall 2009 1080P Plasma 50PS60
Basic Troubleshooting Steps
Basic 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.

9Fall 2009 1080P Plasma 50PS60
This section of the manual will discuss the specifications of the
50PS60 Single layer design. The 1080p Full HD resolution and THX
Display certification makes this series the must have HDTV in 2009.
Product Information
Product Information

10 Fall 2009 1080P Plasma 50PS60
Specifications Pg 1
Specifications Pg 1
1080P PLASMA HDTV
Full HD 1080p Plasma TV (50” diagonal)
•50" Screen
•Full HD 1080p
•THX Display Certification and THX Cinema Mode
•THX Media Director
•Super Bright Panel: 1,500 cd/m2 Brightness
•30,000:1 Contrast Ration
•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 II, Invisible Speaker, Picture Wizard, Intelligent Sensor)
•Easy UI menu interface
•Pure Black Level
•Auto Navigation:
(VCR, DVD, Bluray, HD DVD, SetTop Box, Satellite, Cable Box, Game, PC)
•Input Labeling

11 Fall 2009 1080P Plasma 50PS60
Specifications Pg 2
Specifications 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

12 Fall 2009 1080P Plasma 50PS60
Specifications Logo Familiarization (Pixels, HDMI, Invisible Spe
Specifications Logo Familiarization (Pixels, HDMI, Invisible Speakers, XD Engine) akers, XD Engine)
Invisible Speaker
Personally 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 Engine
Realizing optimal quality for all images
One XD Engine optimizes the images from RF signals as another XD
Engine optimizes them from External inputs. Dual XD Engine presents
images with optimal quality two times higher than those of previous
models.

13 Fall 2009 1080P Plasma 50PS60
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.

14 Fall 2009 1080P Plasma 50PS60
Specifications Logo Familiarization (AV Model,
Specifications Logo Familiarization (AV Model, Vol Vol 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 background
noise.
Save Energy, Save Money
Home 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 Money
It 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 is
Pre-calibrated
using ISFccc,
(new in 2009)

15 Fall 2009 1080P Plasma 50PS60
(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 Driving
600Hz 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.

16 Fall 2009 1080P Plasma 50PS60
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

17 Fall 2009 1080P Plasma 50PS60
Remote Control
Remote Control
TOP PORTION BOTTOM PORTION

18 Fall 2009 1080P Plasma 50PS60
Accessing the Service Menu
Accessing the Service Menu
REMOTE
TOP PORTION
SIDE KEYS
To access the Service Menu.
1) Turn the Set On
2) 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, enter
0000

19 Fall 2009 1080P Plasma 50PS60
Rear and Side Input Jacks
Rear and Side Input Jacks
USB
Music/Pictures and
Software Upgrades