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LCD TV. 42LG61YD Datasheet

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LCD TV. 42LG61YD Datasheet






42LG61YD TV. Datasheet pdf. Equivalent




42LG61YD TV. Datasheet pdf. Equivalent





Part

42LG61YD

Description

LCD TV



Feature


Internal Use Only website:http://biz.LGs ervice.com LCD TV SERVICE MANUAL CHASS IS : LB81C MODEL : 42LG61YD CAUTION 4 2LG61YD-AC BEFORE SERVICING THE CHASSI S, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. www.DataSheet4U.net CONTENTS CONTENTS ............................. ....................................... .......................... 2 PRODUCT SA FETY ..............
Manufacture

LG

Datasheet
Download 42LG61YD Datasheet


LG 42LG61YD

42LG61YD; ........................................ .............................3 SPECIFIC ATION ................................. ....................................... ................6 ADJUSTMENT INSTRUCTIO N ..................................... ..........................12 TROUBLE SH OOTING ................................ ....................................... .....18 BLOCK DIAG.


LG 42LG61YD

RAM..................................... ....................................... .......22 EXPLODED VIEW ............... ....................................... ............................ 34 SVC. SH EET ................................... ....................................... ..................... Copyright © 200 8 LG Electronics. Inc. All right reserv ed. Only for traini.


LG 42LG61YD

ng and service purposes -2- LGE Intern al Use Only SAFETY PRECAUTIONS IMPORTA NT SAFETY NOTICE Many electrical and me chanical parts in this chassis have spe cial safety-related characteristics. Th ese parts are identified by in the Sche matic Diagram and Replacement Parts Lis t. It is essential that these special s afety parts should be replaced with the same components a.

Part

42LG61YD

Description

LCD TV



Feature


Internal Use Only website:http://biz.LGs ervice.com LCD TV SERVICE MANUAL CHASS IS : LB81C MODEL : 42LG61YD CAUTION 4 2LG61YD-AC BEFORE SERVICING THE CHASSI S, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. www.DataSheet4U.net CONTENTS CONTENTS ............................. ....................................... .......................... 2 PRODUCT SA FETY ..............
Manufacture

LG

Datasheet
Download 42LG61YD Datasheet




 42LG61YD
Internal Use Only
website:http://biz.LGservice.com
LCD TV
SERVICE MANUAL
CHASSIS : LB81C
MODEL : 42LG61YD 42LG61YD-AC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
www.DataSheet4U.net




 42LG61YD
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
SPECIFICATION ........................................................................................6
ADJUSTMENT INSTRUCTION ...............................................................12
TROUBLE SHOOTING ............................................................................18
BLOCK DIAGRAM...................................................................................22
EXPLODED VIEW .................................................................................. 34
SVC. SHEET ...............................................................................................
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-2-
LGE Internal Use Only




 42LG61YD
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
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation 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 circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.
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.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
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 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 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 exposed 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 specified, 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
AC Volt-meter
To Instrument's
exposed
METALLIC PARTS
0.15uF
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
1.5 Kohm/10W
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-3-
LGE Internal Use Only



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