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USA : http//www.lgservice.com
: http//lgservice.com/techsup.html
PLASMA MONITOR
SERVICE MANUAL
CHASSIS : RF-04FA
MODEL : MW-71PY10
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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 lsolation 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 circuitary that may be voltage measurements for each esposed 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 sepcified, 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 positioin, 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 CANADA: LG Electronics Canada, Inc. 550 Matheson
reading must be infinite. Boulevard East Mississauga, Ontario L4Z 4G3
An other abnormality exists that must be corrected before the
receiver is returned to the customer. USA : LG Customer Interactive Center
P.O.Box 240007, 201 James Record Road Huntsville,
AL 35824
Digital TV Hotline 1-800-243-0000
- 2 -
TABLE OF CONTENTS
DESCRIPTION OF CONTROLS ...........................................4
SPECIFICATIONS.................................................................7
ADJUSTMENT INSTRUCTIONS ..........................................8
BLOCK DIAGRAM...............................................................13
EXPLODED VIEW...............................................................14
EXPLODED VIEW PARTS LIST .........................................15
REPLACEMENT PARTS LIST ............................................16
SCHEMATIC DIAGRAM..........................................................
PRINTED CIRCUIT BOARD ...................................................
- 3 -
DESCRIPTION OF CONTROLS
Controls
Front Panel Controls
R
TruSurround XT
ruSurround
INDEX
Switches
LED Display
on or off.
INPUT SELECT MENU VOL
Sub power Button Remote
Control
E, D Buttons
Sensor
VOLUME (F,G) Buttons
MENU Button Power Indicator
Illuminates orange in standby
INPUT SELECT Button mode, Illuminates green when
the monitor is turned on.
(If the power indicator is red,
contact your service center.)
- 4 -
DESCRIPTION OF CONTROLS
Connection Options
Back Connection Panel
Remote Control Port S-Video Input EXTERNAL SPEAKER
Connect your wired Connect S-Video out from (8 ohm output)
remote control here. an S-VIDEO device to the Connect to optional
S-VIDEO input. external speaker(s).
DVI Input/Audio Input/RGB Input
EURO SCART SOCKET * For further information,
Connect the monitor output connector refer to `Speaker &
Connect the euro scart of
from a PC to the appropriate input port. Speaker Stand' manual.
the VCR to these sockets.
COMPONENT VIDEO
INPUT 2 INPUT 2 ( )R( ) ( )L ( )
REMOTE COMPONENT VIDEO
RS-232C INPUT HDMI DVI INPUT AUDIO INPUT RGB INPUT INPUT 1
VIDEO3 VIDEO4
CONTROL (CONTROL/SERVICE) INPUT 1
R L R MONO L EXTERNAL SPEAKER AC INPUT
S-VIDEO
VIDEO AUDIO AUDIO VIDEO
Audio/Video Input
Connect audio/video output from
HDMI an external device to these jacks.
Connect a HDMI Component Input (1,2)
signal to this jack. Connect a component video/audio
device to these jacks.
Power Cord Socket
This TV operates on an AC power. The voltage is indi-
RS-232C INPUT
cated on the Specifications page. Never attempt to oper-
(CONTROL/SERVICE) PORT
ate the TV on DC power.
Connect to the RS-232C port
on a PC.
- 5 -
DESCRIPTION OF CONTROLS
Remote Control Key Functions
- When using the remote control, aim it at the remote control sensor on the monitor.
- Under certain conditions such as if the remote IR signal is interrupted, the remote control may not function. Press
the key again as necessary.
MODE
Selects the remote operating mode: MNT,
VCR, DVD, CABLE, HDSTB or AUDIO.
LIGHT
Select other operating modes, for the
Illuminates the remote control buttons.
remote to operate external devices.
INPUT
POWER
Selects: Video1-2-3-4, Component 1-2,
Turns your monitor or any other pro-
RGB-DTV (or RGB-PC),
grammed equipment on or off, depending
DVI-DTV (or DVI-PC), HDMI input sources.
LIGHT
MODE POWER on mode.
PIP PIP DW DW
INPUT
Selects the PIP mode. Selects the DW mode.
NUMBER buttons DASP
Dosen't work for monitor mode. To select the sound appropriate to your
viewing program character:
APC DASP Flat, Music, Cinema, Sports, or User
APC
Adjusts the factory preset picture according
to the room.
MUTE SLEEP
SLEEP
MUTE VOL CH
Sets the Sleep Timer.
Switches the sound on or off. CHANNEL UP/DOWN
VOLUME UP/DOWN WIN. POSITION SPLIT ZOOM Selects available channels found with Auto
Increases/decreases the sound level. WIN. SIZE
program. Dosen't work for monitor mode.
WIN. SIZE SPLIT ZOOM
Adjusts the sub picture size. Enlarges the picture.
ENTER
XD
Switches the XD on or off.
WIN.POSITION
MENU EXIT
Moves the sub picture. PIP INPUT ARC EXIT
Clears all on-screen displays and returns to
THUMBSTICK PLAY PAUSE STOP RECORD
monitor viewing from any menu.
(Up/Down/Left/Right/ENTER)
Allows you to navigate the on-screen REW FF SKIP ARC
menus and adjust the system settings to Changes the picture format.
your preference. VIDEO COM1 COM2 RGB
MENU DVI HDMI KEY LOCK INDEX
VCR/DVD BUTTONS
Brings up the main menu to the screen. Control some video cassette recorders or
PIP INPUT DVD player ("RECORD" button is not avail-
Selects the input source for able for DVD player).
the sub picture. VIDEO/COM1/COM2/RGB/DVI/HDMI
KEY LOCK Selects: Video1-2-3-4, Component 1-2,
Switches the key lock on or off. RGB-DTV (or RGB-PC), DVI-DTV (or DVI-
PC), HDMI input sources.
INDEX
Switches LED Display on or off.
- 6 -
SPECIFICATIONS
MODELS MW-71PY10
Width (inches / mm) 68.9 / 1750
Height (inches / mm) 38.7 / 982
Depth (inches / mm) 3.9 / 98
Weight (pounds / kg) 183.6 / 83.3
Power requirement AC110-240V ~ 50/60Hz
Resolution 1920 x 1080 (Dot)
Color 16,770,000 (256 steps of each R, G and B)
Viewing Size (mm) 1512.26
Operating Temperature Range 32 ~ 104