LG RT-29FE60RX User manual

COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC-049A
MODEL:RT-29FE60/61RX
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
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- 3 -
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 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.
Due to high vacuum and large surface area of picture tube,
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.
X-RAY Radiation
Warning:
To determine the presence of high voltage, use an accurate
high impedance HV meter.
Adjust brightness, color, contrast controls to minimum.
Measure the high voltage.
The meter reading should indicate
23.5 ±1.5KV: 14-19 inch, 26 ±1.5KV: 19-21 inch,
29.0 ±1.5KV: 25-29 inch, 30.0 ±1.5KV: 32 inch
If the meter indication is out of tolerance, immediate service
and correction is required to prevent the possibility of
premature component failure.
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
The source of X-RAY RADIATION in this TV receiver is the
High Voltage Section and the Picture Tube.
For continued X-RAY RADIATION protection, the
replacement tube must be the same type tube as specified in
the Replacement Parts List.
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
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- 4 -
DESCRIPTION OF CONTROLS
All the functions can be controlled with the remote control handset.
Some functions can also be adjusted with the buttons on the front
panel of the set.
Remote control handset
Before you use the remote control handset, please install the bat-
teries. See the next page.
1. POWER
switches the set on from standby or off to standby.
2. NUMBER BUTTONS
switches the set on from standby or directly select a number.
3. ARC (Aspect Ratio Control)
changes the picture format.
4. TURBO PICTURE / SOUND BUTTON
selects Turbo picture / sound.
5. DD/ EE(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
FF/ GG(Volume Up/Down)
adjusts the volume.
adjusts menu settings.
6. VCR BUTTONS (option)
control a LG video cassette recorder.
7. SSM (Sound Status Memory)
recalls your preferred sound setting.
8. I/II (option)
selects the language during dual language broadcast (option).
selects the sound output.
9. PSM (Picture Status Memory)
recalls your preferred picture setting.
10. TELETEXT BUTTONS (option)
These buttons are used for teletext.
For further details, see the ‘Teletext’ section.
11. MUTE
switches the sound on or off.
12. TV/AV
selects TV or AV mode.
switches the set on from standby.
13. MENU
selects a menu.
14. OK
accepts your selection or displays the current mode.
OK
PR
VOL
PR
VOL
PLAY
P/STILL STOP REC
REW FF
I/II SSM LIST
PSM
SLEEP
PIP Q.VIEW
?
MIX TIME
SWAP INPUT
REVEAL MODE
SIZE STILL POSITION
9/4 PIP
i
M
0
ARC TV/AV
MENU
PICTURE
SOUND
123
456
789
POWER MUTE
TEXT
PR
PR
T U R B O
EYE/
FAVOURITE
TEXT
Q.VIEW
?
MIX TIME
REVEAL MODE
SIZE HOLD UPDATE
INDEX
i
M
FAVOURITE
(With TELETEXT / Without PIP)
(With TELETEXT / PIP)
2
1
3
5
6
8
4
9
7
11
12
15
16
13
18
14
17
20
10
19
10
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- 5 -
OK
PR
VOL
PR
VOL
PLAY
P/STILL STOP REC
REW FF
I/II SSM LIST
PSM
SLEEP
Q.VIEW
0
ARC TV/AV
MENU
PICTURE
SOUND
123
456
789
POWER MUTE
T U R B O
EYE/
FAVOURITE
15. LIST
displays the programme table.
16. EYE/*(option)
switches the eye function on or off.
17. SLEEP
sets the sleep timer.
18. Q.VIEW
returns to the previously viewed programme.
19. FAVOURITE
selects a favorite programme.
20. PIP BUTTONS (option)
PIP
switches the sub picture on or off.
PR +/-
selects a programme for the sub picture.
SWAP
alternates between main and sub picture.
INPUT
selects the input mode for the sub picture.
SIZE
adjusts the sub picture size.
STILL
freezes motion of the sub picture.
POSITION
relocates the sub picture in clockwise direction.
9/4 PIP
switches on or off the programme scan mode through 4 or 9
sub pictures.
COLOURED BUTTONS
These buttons are used for teletext (only TELETEXT models) or
programme edit.
FAVOURITE
Q.VIEW
SWAP INPUT
SIZE STILL POSITION
9/4 PIP
PR
PR
/
PIP
(Without TELETEXT / With PIP)
(Without TELETEXT / PIP)
2
1
3
5
6
8
4
9
7
11
12
15
16
13
18
14
17
19
20
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- 6 -
S-VIDEO VIDEO L/MONO RAUDIO
AV3
12
13
MENU OK
VOL PR
RF/RT-25/29FA51/55 series
16
311
52
4
ON/OFF
MENU O K
VOL VOL
PR
CF/CT-25/29Q45 series
132 6 411
5
ON/OFF
TV/AV
VOL PR
CF/CT-25/29M35 series
1 2 6 7 8 9
VIDEO
AUDIO
L
R
MONO
AV3
12
13
L/MONO R
AUDIO
VIDEO
AV3
S-VIDEO
12
13
ON/OFF
MENU VOL SOUND
OK PR PICTURE
TURBO
CF/CT-25/29Q95 series
126 54 10 11
3
S-VIDEO VIDEO L/MONO RAUDIO
AV3
12
13
RF/RT-25/29FD15/40 series
MENU OK VOL PR
1 2 6 43 5
RF/RT-29FE60/61 series
1265
34
1. MAIN POWER
switches the set on or off.
2. POWER/STANDBY INDICATOR
illuminates brightly when the set is in
standby mode.
dims when the set is switched on.
3. MENU
selects a menu.
4. OK
accepts your selection or displays the
current mode.
5. DD/ EE(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
FF/ GG(Volume Down/Up)
adjusts the volume.
adjusts menu settings.
6. REMOTE CONTROL SENSOR
Note : Only use the supplied remote
control handset. (When you use oth-
ers, they’ll be not able to function.)
7. TV/AV
selects TV or AV mode.
clears the menu from the screen.
switches the set on from standby.
8. (Function)
selects volume, EYE (option), picture
items or brief auto programme while the
menus not display.
9. +/- (DD/EE)
adjusts the function or selects a pro-
gramme.
switches the set on from standby.
10. TURBO SOUND / PICTURE (option)
switches Turbo sound or Turbo picture
function on or off.
11. EYE (option)
adjusts picture according to the sur-
rounding conditions.
12. HEADPHONE SOCKET (option)
Connect the headphone plug to this
socket.
13. AUDIO/VIDEO IN SOCKETS (AV3)
Connect the audio/video out sockets of
external equipment to these sockets.
S-VIDEO/AUDIO IN SOCKETS (S-AV)
(option)
Connect the video out socket of an
S-VIDEO VCR to the S-VIDEO socket.
Connect the audio out sockets of the
S-VIDEO VCR to the audio sockets
as in AV3.
Note : Do not place any heavy objects
(over 4Kg) on the RF/RT-25/29FA35
series models.
Front panel
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