LG RU-15LA61 Service Manual
LCD
Color Television
OWNER’S MANUAL
MODEL : RU-15LA61
RU-20LA61
Internet Home Page : http://www.lge.com
Please read this manual carefully before operating
your set.
Retain it for future reference.
Record model number and serial number of the set.
See the label attached on the back cover and quote
this information to your dealer when you require service.
2
RECORD YOUR MODEL NUMBER
(For future reference)
The model and serial number of your TV are located on the
back of the TV cabinet. For convenience, we suggest that
you record those numbers here:
MODEL NO._______________________________
SERIAL NO._______________________________
WARNING :
TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK).
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING :
TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
NOTE TO CABLE/TV INSTALLER:
This reminder is provided to call the cable TV system installer’s attention to Article 820-40 of the National
Electric Code (U.S.A.). The code provides guidelines for proper grounding and, in particular, specifies that
the cable ground shall be connected to the grounding system of the building, as close to the point of the cable
entry as practical.
REGULAT OR YINFORMA TION:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment
CAUTION:
Do not attempt to modify this product in any way without written authorization from LG Electronics
Corporation. Unauthorized modification could void the user’s authority to operate this product.
WARNING
RISK OF ELECTRIC SHOCK
DO NOT OPEN
INTRODUCTION
3
IMPORTANT SAFETY INSTRUCTIONS
Important safeguards for you and your new product
Y our product has been manufactured and tested with your safety in mind. However, improper use can result
in potential electrical shock or fire hazards. To avoid defeating the safeguards that have been built into your
new product, please read and observe the following safety points when installing and using your new product, and save them for future reference.
Observing the simple precautions discussed in this booklet can help you get many years of enjoyment and
safe operation that are built into your new product.
This product complies with all applicable U.S. Federal safety requirements, and those of the Canadian
Standards Association.
(Continued on next page)
1. Read Instructions
All the safety and operating instructions should be
read before the product is operated.
2. Follow Instructions
All operating and use instructions should be followed.
3. Retain Instructions
The safety and operating instructions should be
retained for future reference.
4. Heed Warnings
All warnings on the product and in the operating
instructions should be adhered to.
5. Cleaning
Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners.
Use a damp cloth for cleaning.
6. Water and Moisture
Do not use this product near water - for example, near
a bath tub, wash bowl, kitchen sink, or laundry tub, in
a wet basement, or near a swimming pool.
7. Accessories, Carts, and Stands
Do not place this product on an unstable cart, stand,
tripod, bracket, or table. The product may fall, causing
serious injury to a child or adult, and serious damage
to the product. Use only with a cart, stand, tripod,
bracket, or table recommended by the manufacturer,
or sold with the product. Any mounting of the product
should follow the manufacturer’s instructions, and
should use a mounting accessory recommended by
the manufacturer.
8. Transporting Product
A product and cart combination should be moved
with care. Quick stops, excessive force, and uneven
surfaces may cause the product and cart combination to overturn.
9. Attachments
Do not use attachments not recommended by the
product manufacturer as they may cause hazards.
10. Ventilation
Slots and openings in the cabinet are provided for
ventilation and to ensure reliable operation of the
product and to protect it from overheating, and these
openings must not be blocked or covered. The openings should never be blocked by placing the product
on a bed, sofa, rug, or other similar surface. This
product should not be placed in a built-in installation
such as a bookcase or rack unless proper ventilation
is provided or the manufacturer’s instructions have
been adhered to.
11. Power Sources
This product should be operated only from the type
of power source indicated on the marking label. If
you are not sure of the type of power supply to your
home, consult your product dealer or local power
company. For products intended to operate from battery power, or other sources, refer to the operating
instructions.
12. Power-Cord Polarization
This product is equipped with a three-wire grounding
type alternating-current line plug (a plug having one
blade wider than the other). This plug will fit into the
power outlet only one way. This is a safety feature. If
you are unable to insert the plug fully into the outlet,
contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized
plug.
13. Power-Cord Protection
Power-supply cords should be routed so that they
are not likely to be walked on or pinched by items
placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and
the point where they exit from the product.
PORTABLE CART WARNING
4
IMPORTANT SAFETY INSTRUCTIONS
14. Outdoor Antenna Grounding
If an outside antenna or cable system is connected
to the product, be sure the antenna or cable system
is grounded so as to provide some protection against
voltage surges and built-up static charges. Article
810 of the National Electrical Code (U.S.A.), ANSI/
NFPA 70 provides information with regard to proper
grounding of the mast and supporting structure,
grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of
antenna-discharge unit, connection to grounding
electrodes, and requirements for the grounding electrode.
15. Lightning
For added protection for this product (receiver) during a lightning storm, or when it is left unattended
and unused for long periods of time, unplug it from
the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the product due
to lightning and power-line surges.
16. Power Lines
An outside antenna system should not be located in
the vicinity of overhead power lines or other electric
light or power circuits, or where it can fall into such
power lines or circuits. When installing an outside
antenna system, extreme care should be taken to
keep from touching such power lines or circuits as
contact with them might be fatal.
17. Overloading
Do not overload wall outlets and extension cords as
this can result in a risk of fire or electric shock.
18. Object and Liquid Entry
Never push objects of any kind into this product
through openings as they may touch dangerous voltage points or short-out parts that could result in a fire
or electric shock. Never spill liquid of any kind on the
product.
19. Servicing
Do not attempt to service this product yourself as
opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to
qualified service personnel.
20. Damage Requiring Service
Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:
a. If the power-supply cord or plug is damaged.
b. If liquid has been spilled, or objects have fallen
into the product.
c. If the product has been exposed to rain or water.
d. If the product does not operate normally by following
the operating instructions. Adjust only those controls
that are covered by the operating instructions as an
improper adjustment of other controls may result in
damage and will often require extensive work by a
qualified technician to restore the product to its normal
operation.
e. If the product has been dropped or the cabinet has
been damaged.
f. If the product exhibits a distinct change in performance.
21. Replacement Parts
When replacement parts are required, be sure the
service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.
22. Safety Check
Upon completion of any service or repairs to this
product, ask the service technician to perform safety
checks to determine if the product is in proper operating condition.
23. Wall or Ceiling Mounting
The product should be mounted to a wall or ceiling
only as recommended by the manufacturer. The
product may slide or fall, causing serious injury to a
child or adult, and serious damage to the product.
24. Heat
The product should be situated away from heat
sources such as radiators, heat registers, stoves, or
other products (including amplifiers) that produce
heat.
Antenna Lead in Wire
Antenna Discharge Unit
(NEC Section 810-20)
Grounding Conductor
(NEC Section 810-21)
Ground Clamps
Power Service Grounding
Electrode System (NEC
Art 250, Part H)
Ground Clamp
Electric Service
Equipment
Example of Grounding According to National
Electrical Code Instructions
NEC - National Electrical Code
(Continued from previous page)
5
INTRODUCTION
CONNECTIONS
BASIC
FUNCTIONS
CLOCK
SETTING
AUDIO /
VIDEO
SPECIAL
FUNCTION
INFORMATION
5
1
Safety Warnings 2
Important Safety Instructions 3
Controls 6
Remote Control:
Installing Batteries/ Operation 10
TV Overview 11
Kensington Security System 15
2
3
4
5
7
Antenna/Cable Connections 16
VCR Connections 18
External Equipment Connections 19
DVD Player Connections 20
DTV (Set-top Box) Connections 21
PC/Computer Connections 22
(use TV as a Monitor)
PC Mode Functions Check 24
PC Mode Adjustments 25
Turning the TV on 30
TV Mode Menus 31
Onscreen Menu Language 32
Finding/Erasing channels 33
Favorite Channel Memory 35
Video/Picture Setup 42
Audio/Sound Setup 45
6
Closed Captions 50
Key Lock 53
Parental Control 54
Auto Clock Setup 36
Manual Clock Setup 37
Off Timer Setup 38
On Timer Setup 39
Auto off 40
Sleep Timer Setup 41
Maintenance 57
Product Specifications 58
Troubleshooting Checklist 59
Your LG Limited Warranty 63-64
Before operating the
TV, please read this
manual carefully.
CONTENTS
INDEX
Controls
6
Front of the
Front of the TVTV
Remote Control Sensor
DPM Indicator
(RU-15LA61 Only)
SAP Indicator
Mono Indicator
Stereo Indicator
Power/Standby indicator
Illuminates red in standby mode, Illuminates
green when the TV is turned on.
R
ST
MONO DPM
SAP
STEREO
R
MONO DPM
ST
STEREO
SAP
INTRODUCTION
7
DC IN (15V)
ANT IN
+75 Ω
COMPONENT(480i/480p/720p/1080i)
VIDEO IN
DVD/DTV IN
AUDIO
RLVIDEO
P
R
P
B
Y L R
AUDIO(MONO)
DC 12V
ANT IN
+75 Ω
PC INPUT
COMPONENT(480i/480p/720p/1080i)
PC
SOUND
VIDEO IN
DVD/DTV IN
AUDIO
RLVIDEO
P
R
P
B
Y L R
AUDIO(MONO)
Back of the
Back of the TVTV
Audio/Video Input
- This manual mainly explains the features for the RU-15LA61
PC Input
PC sound Input
Antenna Input
DC 12V Input
DVD/DTV IN
(Component (480i/480p/720p/1080i),
AUDIO) Input
RU-15LA61
RU-15LA61
RU-20LA61
RU-20LA61
* Kensington
Security System
Connector
(Refer to P.15.)
DC 15V Input
Controls
8
Side of the
Side of the TVTV
S-VIDEO VIDEO
AUDIO
R
IN
2
L / MONO
Side Control Panel
Side Control Panel
Side Connection Panel
Side Connection Panel
Channel Buttons
Volume Buttons
ch
vol
menu
enter
on/off
tv
video
/ I
Enter Button
Menu Button
TV·Video Button
On/Off Button
Headphone Jack
S-Video Input
Video Input
Audio Input
ST
MONO DPM
STEREO
SAP
INTRODUCTION
9
POWER
MTS
EXIT
VOLUME (
FG
)
PAGE 49
PAGE 42
MUTE
NUMBERS
CHANNEL (
DE
)
TV/VIDEO
Select: TV, Video 1, Video 2,
S-Video, Component,
RGB-PC (RGB-PC only
available for RU-15LA61)
FCR
MULTIMEDIA
Select: TV, Component,
RGB-PC (RGB-PC only
available for RU-15LA61)
AUDIO
CC
RU-15LA61 Only:
RU-15LA61 Only:
PIP
POSITION
PIP INPUT
PIP CHANNEL (
DE
)
MENU
VIDEO
FLASHBK
: Press the FLASHBK button
to return to the last channel
you were watching.
Remote Control Buttons
Remote Control Buttons
PAGE 35
PAGE 16-23
PAGE 27-28
PAGE 45
PAGE 52
PAGE 41
SLEEP
powermute
tv/video
multimedia
mts
exit
fcr
menu
ch
enter
vol
vol
ch
123
456
789
audio
pip position
video
0
flashbkcc sleep
pip input
ch
Remote Control: Installing Batteries/Operation
10
Make sure there are no
objects between the
remote control and its
sensor.
Don’t place the remote control
near a heater or in a damp
place. Dropping or hitting the
remote control may damage it.
Signals from the remote
control may be disturbed by
sunlight or other strong
light. In this case, darken
the room.
Notes For Using Remote Control
Notes For Using Remote Control
Pull the battery cover
upward in the direction
shown by the arrow
and remove it.
1
2
3
Insert the batteries
with correct polarity,
match "+" and "-".
Replace the battery
compartment cover.
- Install two AAA, 1.5V batteries. Don’t mix used batteries with new batteries.
- Remove batteries when you won’t use the remote control for a long time. Liquid leakage
from batteries may damage the remote.
Installing Batteries
Installing Batteries
MONO DPM
STEREO
ST
DUAL
Remote Control
Sensor
tv/video
fcr
vol
123
456
789
audio
pip position
powermute
multimedia
mts
exit
menu
ch
enter
vol
ch
video
0
flashbkcc sleep
ch
pip input
TV Overview
11
INTRODUCTION
Accessories
Accessories
AC Adapter
PC Signal Cable PC Sound Cable
1.5V
1.5V
Power Cord
Operating Guide
AAA
Batteries
Remote Control
powermute
tv/video
multimedia
mts
fcr
ch
ch
vol
enter
123
456
789
0
vol
exit
menu
audio
flashbkcc sleep
video
pip position
pip input
ch
Tie Bands
- Arrange the wires
with the tie bands.
RU-15LA61 Only
- An optional wall mount is available for this TV, see your LG dealer.
For installation, follow the instructions provide with the optional wall mount.
Installation on the W
Installation on the W
all
all
K
K
TV Overview
12
* Caution: Please make sure to connect the TV to the AC power adapter before connecting the TV's power plug
to a wall power outlet.
a. Remove the connection panel cover as shown below.
b. Connect the antenna cable to the antenna input port on the TV.
c. Connect the AC adapter to the power input port on the TV.
d. Plug the power cord into the wall power outlet only after connecting the power cord to the AC
adapter first.
e. Reinstall the connection panel cover.
b
c
d
Connections
Connections
Notes
● If the TV feels cold to the touch, there may be a small “flicker” when turned on.
This is normal, there is nothing wrong with TV.
● Some dot defects may appear on the screen, appearing as tiny red, green or blue spots.
However,they will have no adverse effect on the monitor's performance.
● Avoid touching the LCD screen or holding your finger(s) against it for long periods of time.
Doing so may produce some temporary distortion effects on the screen.
a
INTRODUCTION
13
* The connection panel is hidden behind the A/V cover.
a. Remove the cover.
b. Install wires as necessary.
c. Reinstall the cover. Align the holes on the TV back panel with the two tabs on the rear A/V cover
as shown.
e. Close cover.
- Thread, then pull the wires through the hole on the TV stand.
Rear
Rear
A/V Cover
A/V Cover
WWire Holders
ire Holders
K
TV overview
14
- You can adjust the vertical angle of the TV between 3° and 12°.
Adjusting the
Adjusting the
TV V
TV V
iewing
iewing
Angle
Angle
3
12
S
-
V
I
D
E
O
V
ID
E
O
A
U
D
I
O
R
S
-
V
I
D
E
O
V
I
D
E
O
A
U
D
I
O
R
IN3
L
/
M
O
N
O
I
N
3
L
/
M
O
N
O
- The TV can be conveniently swiveled on its stand 30 degrees to the left or right to provide the
optimum viewing angle.
Swivel Stand
Swivel Stand
M
O
N
O
STERE
O
S
T
D
U
A
L
M
O
N
O
S
T
E
R
E
O
S
T
D
U
A
L
INTRODUCTION
Kensington Security System
15
- The TV is equipped with a Kensington Security System connector on the back panel. Connect the
Kensington Security System cable as shown below.
- For the detailed installation and use of the Kensington Security System, refer to the user’s guide
provided with the Kensington Security System.
For further information, contact http://www.kensington.com, the internet homepage of the
Kensington company . Kensington sells security systems for expensive electronic equipment such as
notebook PCs and LCD projectors.
- Note: The Kensington Security System is an optional accessory.
K
Antenna/Cable Connections
16
- For optimum picture quality, adjust antenna direction.
● Typical wall antenna jack used in apartment buildings, connect the antenna cable as shown below.
(Use the correct type of antenna cable for the type of wall antenna jack.)
Wall Connection Jack
Apartment Buildings
Antenna Jack
Bronze Wire
Turn clockwise to
tighten.
Antenna
Converter
300Ω Flat Wire
75Ω Round Cable
● This type of antenna is commonly used in single family dwellings.
UHF
Antenna
VHF Antenna
Antenna Jack
Bronze Wire
Turn clockwise to
tighten.
Antenna
Converter
300Ω Flat Wire
75Ω Round Cable
- If you have a 75Ω round cable, insert the bronze wire and then tighten the connection
nut. If you have a 300Ω flat wire, connect the twisted wire to the antenna converter and
then connect the converter to the antenna jack on the TV.
- When using 75Ω round cable, do not bend the bronze wire. It may cause poor picture
quality.
- In poor signal areas, to get better
picture quality, install a signal amplifier to the antenna as shown to the
right.
- If signal needs to be split for two
TVs, use an antenna signal splitter
for connection.
Signal
Amplifier
UHF
VHF
Single Family Home
Connecting to an Inside
Connecting to an Inside
Antenna Setup
Antenna Setup
Connecting to an Outdoor
Connecting to an Outdoor
Antenna Setup
Antenna Setup
ANT IN
+75 Ω
COMPONENT(480i/480p
PBY
p
p
ANT IN
+75 Ω
ANT IN
+75 Ω
PBY
COMPONENT(480i/480
PBY
COMPONENT(480i/480
CONNECTIONS
17
- After subscribing to a local cable TV service and installing a converter, you can watch cable TV programming.
- For further cable TV information, contact a local cable service provider.
Cable
Cable
TV Connections
TV Connections
1
Connections
2
Viewing Setup
a. Use the tv/video button on the remote control to select TV (Ant In.) or Video source,
depending on connection setup: 1 or 2.
- Connection 1: Set cable box switch to 3 or 4 and then tune TV to the same channel number.
- Connection 2: Select VIDEO source input to use Audio/Video In connections.
b. Select channels with the cable box.
1
Cable Box Connection Panel
2
ANT IN
+75 Ω
P
B
Y L R
COMPONENT(480i/480p/720p/1080i)
P
R
DVD/DTV IN
RF Cable
AUDIO
PC INPUT
(R) AUDIO (L) VIDEO
TV
VCR
PC
SOUND
VIDEO IN
RLVIDEO
AUDIO(MONO)
VCR Connection and Viewing Setup
18
- In Video mode, TV automatically reverts to TV mode if the fcr button or flashbk buttons are pressed.
- See following pages to connect to other A/V external equipment to input jacks on the TV.
1
Connections
● Connect the audio/video output jacks on VCR to the corresponding input jacks on the TV.
2
Viewing Setup
Watching TV programs
- Turn the TV on and tune to a channel.
Watching VCR
a. Use tv/video button on the remote control to select TV (Ant In.) or Video source,
depending on connection setup: 1 or 2.
- Connection 1: Set VCR switch to 3 or 4 and then tune TV to the same channel number.
- Connection 2: Select Video 1 or 2 source input to use Audio/Video In connections.
b. Insert a video tape into the VCR and press the PLAY button.
Connecting a VCR
Connecting a VCR
1
Typical
Antennas
VCR Connection Panel
Direct
connection
2
ANT IN
+75 Ω
Y L R
COMPONENT(480i/480p/720p/1080i)
DVD/DTV IN
ANT IN
ANT OUT
AUDIO
S-VIDEO
OUT
IN
CH3 CH4
P
R
P
B
PC INPUT
AUDIO VIDEO
(R) (L)
PC
SOUND
VIDEO IN
RLVIDEO
AUDIO(MONO)
CONNECTIONS
External Equipment Connections
19
1
Connections
● Connect the audio/video output jacks on the external A/V equipment to the corresponding input jacks
on the TV.
2
Viewing Setup
Camcorder
Video Game set
tv/video
Video 1
● Turn on the external A/V equipment.
● Turn the TV on and use the tv/video button to select Video 1 or 2 source.
On Remote Control
WWatching External
atching External
A/V Source
A/V Source
TV Connection Panel
External Equipment
Connection Panel
PC INPUT PC
SOUND
VIDEO IN
RLVIDEO AUDIO(MONO)
AUDIO VIDEO
R
L
DVD Player Connections
20
1
Connections
2
Viewing Setup
Component
● Turn on the DVD player.
● Turn the TV on and use tv/video button to select Component source.
● See DVD user's manual for operating instructions.
- Connect DVD/DTV output jacks to TV's COMPONENT (480i/480p/720p/1080i), Y, P
B, PR jacks.
Connect DVD/DTV audio output jacks to right and left input jacks on TV.
TV Connection Panel
DVD Connection Panel
TV INPUT Y PB PR
DVD OUTPUT Y
Y
Y
Y
Cb
B-Y
Pb
PB
Cr
R-Y
Pr
PR
Note:
On Remote Control
tv/video
ANT IN
+75 Ω
Y L R
COMPONENT(480i/480p/720p/1080i)
DVD/DTV IN
(R)
AUDIO
AUDIOYPB PR (L)
P
R
P
B
PC INPUT
PC
SOUND
VIDEO IN
RLVIDEO
AUDIO(MONO)
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