50PX1D-UC (CHASSIS:AF-05FC) — LG TV Service Manual (repair manual)

Model
50PX1D-UC (CHASSIS:AF-05FC)
Pages
32
Size
18.13 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50px1d-uc-chassis-af-05fc.pdf
Date

View LG 50PX1D-UC (CHASSIS:AF-05FC) Service Manual online

PLASMA TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : AF-05FC
MODEL : 50PX1D   
50PX1D-UC
- 2 -
SAFETY PRECAUTIONS
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
An  lsolation Transformer should always be used during
the servicing of a receiver whose chassis is not isolated from
the AC power line. Use a transformer of adequate power rating
as this protects the technician from accidents resulting in
personal injury from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitary that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this monitor is blown, replace
it with the same specified type.
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 Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source,
connect an electrical jumper across the two AC plug prongs.
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
antenna terminals, phone jacks, etc. 
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩ and 5.2MΩ. 
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.
Leakage Current Hot Check 
(See below Figure) 
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check. 
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC
voltmeter with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC
voltage measurements for each esposed metallic part. Any
voltage measured must not exceed 0.75 volt RMS which is
corresponds to 0.5mA.
In case any measurement is out of the limits sepcified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
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
1.5 Kohm/10W
To Instrument's
exposed 
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF
- 3 -
DESCRIPTION OF CONTROLS ...........................................4
SPECIFICATIONS.................................................................8
ADJUSTMENT INSTRUCTIONS ..........................................9
BLOCK DIAGRAM...............................................................14
EXPLODED VIEW...............................................................16
EXPLODED VIEW PARTS LIST .........................................17
REPLACEMENT PARTS LIST ............................................18
SCHEMATIC DIAGRAM..........................................................
PRINTED CIRCUIT BOARDS .................................................
TABLE OF CONTENTS
- 4 -
- This is a simplified representation of front panel. 
Here shown may be somewhat different from your TV.
Controls
Controls
Front Panel Controls
Front Panel Controls
TV/VIDEO
MENU
VOL
CH
POWER Button
Remote Control Sensor
VOLUME (
F
F
,
G
G
) Buttons
Power Standby Indicator
-Without CableCARD
TM 
: Illuminates red in
standby mode, Illuminates green when the
TV is turned on.
-Inserting the CableCARD
TM 
: Illuminates
orange in standby mode, Illuminates green
when the TV is turned on.
CHANNEL (
E
E
D
D
) Buttons
MENU Button
TV/VIDEO Button
DESCRIPTION OF CONTROLS
Page of 32
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Here you can view online or download LG 50PX1D-UC (CHASSIS:AF-05FC) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair LG 50PX1D-UC (CHASSIS:AF-05FC) Plasma. Information contained in LG 50PX1D-UC (CHASSIS:AF-05FC) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).