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CANADA : http//biz.lgservice.com
USA : http//www.lgservice.com
: http//lgservice.com/techsup.html
PLASMA TV
SERVICE MANUAL
CHASSIS : AF-05FA
MODEL : 50PY2DR 50PY2DR-UA
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 same specified type. 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
AC Volt-meter
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source,
connect an electrical jumper across the two AC plug prongs. Good Earth Ground
Place the AC switch in the on positioin, connect one lead of such as WATER PIPE,
ohm-meter to the AC plug prongs tied together and touch other To Instrument's CONDUIT etc.
ohm-meter lead in turn to each exposed metallic parts such as 0.15uF
exposed
antenna terminals, phone jacks, etc. METALLIC PARTS
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 1.5 Kohm/10W
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
CANADA: LG Electronics Canada, Inc. 550 Matheson
Boulevard East Mississauga, Ontario L4Z 4G3
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.................................................................8
ADJUSTMENT INSTRUCTIONS ..........................................9
PRINTED CIRCUIT BOARDS .............................................18
BLOCK DIAGRAM...............................................................23
EXPLODED VIEW...............................................................26
EXPLODED VIEW PARTS LIST .........................................27
REPLACEMENT PARTS LIST ............................................28
SCHEMATIC DIAGRAM..........................................................
- 3 -
DESCRIPTION OF CONTROLS
Controls
W This is a front panel of 50PY2DR, 60PY2DR series TVs.
- This is a simplified representation of a front panel.
Here shown may be somewhat different from your TV.
- This manual explains the features available on the 50PY2DR, 60PY2DR series TVs.
CHANNEL
Front Panel Controls Buttons
VOLUME Buttons
MENU Button
TV/VIDEO Button
TV GUIDE Button
POWER Button
Memory Card
Slots 1,2
Power Standby Indicator
INDEX
Remote Control Program Blinks orange in standby mode, blinks
Switches
Sensor LED Display Display green when the TV is turned on.
on or off.
RGB-PC(or RGB-DTV) mode On recording
IEEE1394 mode On playing
HDMI1/DVI or HDMI2 mode On operating the TimeShift
Component1 or 2 mode State of setting the reserve record
Antenna or Cable mode On operating the mode
Video or Front Video mode
- 4 -
DESCRIPTION OF CONTROLS
Connection Options
W This is a back panel of 50PY2DR, 60PY2DR series TVs.
Back Connection Panel
S-VIDEO Input
FRONT
A connection is available to provide
A/V INPUT
better picture quality than the video
input.
S-VIDEO
VIDEO Input
VIDEO
Connects the video signal from a
video device.
R AUDIO L / MONO
AUDIO Input
RS-232C INPUT VIDEO INPUT AUDIO INPUT
(CONTROL/SERVICE)
L R
VIDEO L AUDIO R
COMPONENT MONITOR S R C
DVD 2 OUTPUT V E O
OUTPUT /DTV
INPUT I M N
COMPONENT A/V
O T
1 INPUT1 (MONO) D
I 1 HDMI 2 E T R
O E O
COMPONENT2 DIGITAL AUDIO (OPTICAL)
E3 L
INPUT CABLE ANTENNA AC INPUT
E9 HDMI /DVI RGB INPUT AUDIO INPUT
E4 DVI
INPUT
Connections are available for listen-
R
ing stereo sound from an external
device.
RS-232C INPUT
(CONTROL/SER-
VICE) PORT Remote Control Port
Cable
Connect to the RS- Connect your wired
232C port on a PC. remote control here.
DVD/DTV Input
IEEE1394 RGB/AUDIO (Component 1-2)
Connect INPUT S-Video
Connect a com-
DVHS or Connect the moni- Input
ponent Antenna Input
G-LINK MicroMV to tor output from a Connect S-
video/audio Connect over-the-
Connect an IEEE1394 PC to the appropri- Video out from
device to these air signals to this
IR controller Connector. ate input port. an S-VIDEO
jacks. jack.
to this jack. device.
CableCARDTM
Used for RS-232C INPUT
(CONTROL/SERVICE)
CableCARDTM
received from Cable OUTPUT
VIDEO AUDIO VIDEO AUDIO
AC INPUT
Service HDMI 2
L
COMPONENT INPUT 2
R L
MONITOR OUTPUT
R
Provider. IEEE-1394
COMPONENT2
INPUT
DIGITAL AUDIO (OPTICAL)
DVD
/DTV REMOTE CABLE ANTENNA
AUDIO INPUT CONTROL
RGB INPUT
HDMI /DVI INPUT (MONO)
DVI COMPONENT INPUT 1 A/V INPUT 1 S-VIDEO
INPUT
Digital Audio (DVI: Audio/Video Input Monitor Output
HDMI1/DVI(VIDE Connect audio/video
Digital Visual Connect a second
O), HDMI 2 output from an exter-
Interface/Compon TV or Monitor.
Connect a HDMI nal device to these
ent2) Input/
signal to jacks. CABLE Input
Digital Audio
HDMI1/DVI or Connect cable signals to this
Output
HDMI2. Or jack, either directly or through a
Connect digital
DVI(VIDEO) sig- cable box.
audio from various
nal to HDMI1/DVI
types of equipment.
port with DVI to Power Cord Socket
Note: In standby
HDMI cable. This TV operates on an AC power. The voltage is
mode,
these ports will not indicated on the Specifications page. Never attempt
work. to operate the TV on DC power.
Note:
- After removing the cover, you can insert the CableCARDTM or connect to the G-LINK jack.
- 5 -
DESCRIPTION OF CONTROLS
Remote Control Key Functions
- When using the remote control, aim it at the remote control sensor on the TV.
POWER VCR/DVD BUTTONS
Turns your TV or any other programmed TV INPUT TV/VIDEO