Service Manuals, User Guides, Schematic Diagrams or docs for : LG Plasma LG RZ-50PY10 Plasma TV Service Manual
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website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
PLASMA TV
SERVICE MANUAL
CHASSIS : RF-043B
MODEL : RZ-50PY10
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
POWER TV GUIDE TV/VIDEO MENU VOL CH
CONTENTS
SAFETY PRECAUTIONS ...................................................................................3
DESCRIPTION OF CONTROLS .........................................................................4
SPECIFICATIONS .............................................................................................14
ADJUSTMENT INSTRUCTIONS ......................................................................16
TROUBLE SHOOTING GUIDE ..........................................................................21
BLOCK DIAGRAM .............................................................................................32
EXPLODED VIEW ..............................................................................................34
EXPLODED VIEW PARTS LIST ........................................................................35
REPLACEMENT PARTS LIST...........................................................................36
SCHEMATIC DIAGRAM ........................................................................................
PRINTED CIRCUIT BOARD ..................................................................................
- 2 -
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in
the Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to
prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during Do not use a line Isolation Transformer during this check.
the servicing of a receiver whose chassis is not isolated from Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
the AC power line. Use a transformer of adequate power rating between a known good earth ground (Water Pipe, Conduit, etc.)
as this protects the technician from accidents resulting in and the exposed metallic parts.
personal injury from electrical shocks. Measure the AC voltage across the resistor using AC
voltmeter with 1000 ohms/volt or more sensitivity.
It will also protect the receiver and it's components from being Reverse plug the AC cord into the AC outlet and repeat AC
damaged by accidental shorts of the circuitry that may be voltage measurements for each exposed metallic part. Any
inadvertently introduced during the service operation. voltage measured must not exceed 0.75 volt RMS which is
corresponds to 0.5mA.
If any fuse (or Fusible Resistor) in this monitor is blown, replace In case any measurement is out of the limits specified, there is
it with the specified. possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
When replacing a high wattage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts. Leakage Current Hot Check circuit
Due to high vacuum and large surface area of picture tube,
AC Volt-meter
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.
Good Earth Ground
such as WATER PIPE,
Leakage Current Cold Check(Antenna Cold Check) To Instrument's CONDUIT etc.
With the instrument AC plug removed from AC source, 0.15uF
exposed
connect an electrical jumper across the two AC plug prongs. METALLIC PARTS
Place the AC switch in the on position, connect one lead of
ohm-meter to the AC plug prongs tied together and touch other
ohm-meter lead in turn to each exposed metallic parts such as 1.5 Kohm/10W
antenna terminals, phone jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1M and 5.2M.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
- 3 -
DESCRIPTION OF CONTROLS
Remote Control Key Functions
- When using the remote control aim it at the remote control sensor of the set.
- There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature.
Displays the selected device. POWER
TV
Switches the set on from standby or
VCR off to standby.
MODE DVD
Selects another device. CABLE ARC
STB Changes the picture format.
TV/AV AUDIO
Selects the TV, AV, Component, RGB
or DVI modes. MUTE
MODE Switches the sound on or off.
TV/AV POWER
MULTIMEDIA
Selects the Component, RGB or DVI ARC Q.VIEW
EDIA MUTE
modes. MULTIM
Returns to the previously viewed
NUMBER buttons programme.
1 2 3
FAVOURITE SSM
Selects a favorite programme. 4 5 6 To select the sound appropriate to
your viewing programme character.
7 8 9
PSM FAVOURITE Q.VIEW
Adjusts the factory preset picture VOL +/- (Volume Up/Down)
according to the room. 0
Increases/decreases sound level.
PR +/- (Programme Up/Down)
MENU PSM SSM Selects a programme.
Displays on screen menus one by one. VOL PR
Exits the current menu.
Memorizes menu changes. EXIT
Clears all on-screen displays and
PIP/DW TEXT/ returns to TV viewing from any
PIP/DW MENU EXIT menu.
Switches the sub picture on or off.
Selects PIP or DW modes.
TEXT/ (option)
PIP PR + /-
Selects a program for the sub picture. *
These buttons are used for teletext.
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