Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_RU-13LA60_[SM]
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website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
LCD TV
SERVICE MANUAL
CHASSIS : ML-024C
MODEL : RU-13LA60
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
June, 2003
P/NO : 3828VD0131Z Printed in Korea
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 Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
An lsolation Transformer should always be used during the electrical jumper across the two AC plug prongs. Place the AC
servicing of a receiver whose chassis is not isolated from the AC switch in the on positioin, connect one lead of ohm-meter to the AC
power line. Use a transformer of adequate power rating as this plug prongs tied together and touch other ohm-meter lead in turn to
protects the technician from accidents resulting in personal injury each exposed metallic parts such as antenna terminals, phone
from electrical shocks. jacks, etc.
If the exposed metallic part has a return path to the chassis, the
It will also protect the receiver and it's components from being measured resistance should be between 1M and 5.2M.
damaged by accidental shorts of the circuitary that may be When the exposed metal has no return path to the chassis the
inadvertently introduced during the service operation. reading must be infinite.
An other abnormality exists that must be corrected before the
If any fuse (or Fusible Resistor) in this TV receiver is blown, receiver is returned to the customer.
replace it with the specified.
Leakage Current Hot Check (See below Figure)
When replacing a high wattage resistor (Oxide Metal Film Resistor, Plug the AC cord directly into the AC outlet.
over 1W), keep the resistor 10mm away from PCB. Do not use a line Isolation Transformer during this check.
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
Keep wires away from high voltage or high temperature parts. between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Due to high vacuum and large surface area of picture tube, Measure the AC voltage across the resistor using AC voltmeter
extreme care should be used in handling the Picture Tube. Do not with 1000 ohms/volt or more sensitivity.
lift the Picture tube by it's Neck. Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each esposed metallic part. Any voltage
Before returning the receiver to the customer, measured must not exceed 0.75 volt RMS which is corresponds to
0.5mA.
always perform an AC leakage current check on the exposed In case any measurement is out of the limits sepcified, there is
metallic parts of the cabinet, such as antennas, terminals, etc., to possibility of shock hazard and the set must be checked and
be sure the set is safe to operate without damage of electrical repaired before it is returned to the customer.
shock.
Leakage Current Hot Check circuit
AC Volt-meter
Good Earth Ground
such as WATER PIPE,
To Instrument's CONDUIT etc.
0.15uF
exposed
METALLIC PARTS
1.5 Kohm/10W
TABLE OF CONTENTS
SPECIFICATIONS.................................................................4
DESCRIPTION OF CONTROLS ...........................................5
ADJUSTMENT INSTRUCTION.............................................8
BLOCK DIAGRAM.................................................................9
EXPLODED VIEW...............................................................10
EXPLODED VIEW PARTS LIST .........................................11
REPLACEMENT PARTS LIST ............................................12
SCHEMATIC DIAGRAM..........................................................
PRINTED CIRCUIT BOARD ...................................................
SPECIFICATIONS
Model RU-13LA60
Horizontal size (inches) 13.6
Height (inches) 14.4
Depth (inches) 6.6
Weight (pounds) 10
Power requirements AC 110-240V ~ 50/60Hz
Television system NTSC
Television channels VHF : 2 ~ 13, UHF : 14 ~ 69
Cable : 1 ~ 125
Television Screen LCD Panel
Power consumption 45 W
Audio output 1W+1W
External input ports Power cord socket (1)
Component (480i) input (1 set)
S-VIDEO input (1)
Headphone jack (1)
Video/Audio input (1 set)
Antenna input (1)
Power supply cord set Standard North America three wire earth-grounding
with flexible cord SJT type or higher type.
CAUTION: If replacing a part becomes necessary, replace the part with an exact duplicate.
Contact any LG authorized service center.
DESCRIPTION OF CONTROLS
Front of the TV
Side Control Panel
ch Channel Buttons
vol Volume Buttons
enter Enter Button
menu Menu Button
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