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P7 PDP TV
SERVICE MANUAL
CONTENTS PAGES
Safety Instuctions 2-5
Technical Specification 6-7
User Instruction 8-29
Back Appearance of TV 30
Interconnection Diagram 31
Block Diagram 32
Block Diagram of Power Supply 33
Service Mode 34-35
Data Sheet of important IC's and parts 36-46
Frequency list of channel 50-52
ATTACHMENT 1: Panel Service Manual
LG-PDP42V6
ATTACHMENT 2: Panel Service Manual
Samsung 42" S3
ATTACHMENT 3: Circuit Diagrams
SAFETY PRECAUTIONS
GENERAL GUIDELINES There are electro-static sensitive components
in PDP Module. Please earth human
1. It is advised to insert an isolation transformer in the body when handle the PDP.In addition, please do
AC supply before servicing a hot chassis. not touch the interface connector pin with bare.
2. Always use the manufacturer's replacement safety
components. The critical safety components marked 8 - Do not operate for a long time under
the same pattern
with on the schematics diagrams should not be
Operating PDP for a long time under the same
by other substitutes. Other substitute may create the
electrical shock , fire or other hazards. Take pattern can cause image persistence and can
attention to replace the spacers with the originals. damage it. Please follow following guidance.
Furthermore where a short circuit has occurred , 1. Turn the power off when do not use.
replace those components that indicate evidence of 2. Change the pattern periodically.
overheating.
3. After servicing , see that all the protective devices LEAKAGE CURRENT COLD CHECK
such as insulation barriers, insulation papers, shields 1. Unplug the AC cord and connect a jumper
and isolation R-C combinations are correctly between the two prongs of the plug.
installed. 2. Turn the receiver's power switch.
4. When the receiver is not being used for a long time 3. Measure the resistance value with an ohmmeter,
of period of time , unplug the power cord of the between the jumpered AC plug and each exposed
Adaptor from the AC outlet. metallic cabinet part on the receiver. When the exposed
PDP Module is very sensitive metallic part a return path to the chassis the reading
should be between 4Mohm and the 20Mohm. When the
both electrically and physically.Users, exposed metal does not have a return path to the chassis,
therefore, are requested to follow the the reading must be infinite.
"Guidance of handling color PDP
Module"on the followings. LEAKAGE CURRENT HOT CHECK
1 -Be careful not to make scratch on the 1. Plug the AC cord directly in to the AC outlet. Do
polarizer. not use an isolation transformer for this check.
Surface of polarizer is soft and can be physically 2. Connect a 2Kohm 10W resistor in series with an
damaged easily.Please do not touch, push or rub exposed metallic part on the receiver and an earth,
such as a water pipe.
polarizer surface with materials over HB hardness.
3. Use an AC voltmeter with high impedance to
2 - Keep clean the surface.
measure the potential across the resistor.
Please wear rubber glove when touch the surface of
4. Check each exposed metallic part and check the
PDP screen. Please use soft and anti-static material voltage at the each point.
as cleaner. 5. Reverse the AC plug at the outlet and repeat each of
3 -Keep out of water.Water on/in the PDP may the above measurements.
cause electrical short or corrosion. Please wipe out 6. The potential at the any point should not exceed 1.4
dry or water carefully. Vrms. In case a measurement is outside the limits
4 -Prevent swift Temperature & Humidity specified , there is the possibility of a shock hazard ,
change.Instantaneous temperature and/or humidity and the receiver should be repaired and rechecked
change can make dew or ice which cause before it is returned to the customer.
nonconformance such as malfunction.
5 - High temperature & high humidity
reduce the life-time. HOT CHECK CIRCUIT
AC-Voltmeter
PDP is not proper to be used at high temperature
and high humidity. Please keep specified TO INSTRUMENTS
EXPOSED
temperature and humidity condition. METALLIC PARTS Water pipe
(earth)
6 - Keep out of Corrosive Gas.Corrosive gas
effect the polarizer and the circuit chemically and
cause defects accordingly. 2 K Ohm
7 - Electrostatic discharge can make
Damage
Important information
Read and heed the notes on safety so that no hazard to your health arises during contractual use. Errors during
installation and connection can damage the device or subsequently related devices.
Always keep the operating instructions within reach. Heed the warnings on the device and in the operating
instructions.