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PLASMA TV
SERVICE MANUAL
CHASSIS : AF-046A
MODEL : DT-60PY10
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS
SAFETY PRECAUTIONS ...................................................................................3
DESCRIPTION OF CONTROLS ........................................................................ 4
SPECIFICATIONS ............................................................................................ 13
ADJUSTMENT INSTRUCTIONS ......................................................................14
TROUBLE SHOOTING GUIDE ..........................................................................17
BLOCK DIAGRAM .............................................................................................31
EXPLODED VIEW ..............................................................................................32
EXPLODED VIEW PARTS LIST ........................................................................33
REPLACEMENT PARTS LIST...........................................................................34
SCHEMATIC DIAGRAM ........................................................................................
PRINTED CIRCUIT BOARD ..................................................................................
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 Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during Do not use a line Isolation Transformer during this check.
the servicing of a receiver whose chassis is not isolated from Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
the AC power line. Use a transformer of adequate power rating between a known good earth ground (Water Pipe, Conduit, etc.)
as this protects the technician from accidents resulting in and the exposed metallic parts.
personal injury from electrical shocks. Measure the AC voltage across the resistor using AC
voltmeter with 1000 ohms/volt or more sensitivity.
It will also protect the receiver and it's components from being Reverse plug the AC cord into the AC outlet and repeat AC
damaged by accidental shorts of the circuitry that may be voltage measurements for each exposed metallic part. Any
inadvertently introduced during the service operation. voltage measured must not exceed 0.75 volt RMS which is
corresponds to 0.5mA.
If any fuse (or Fusible Resistor) in this monitor is blown, replace In case any measurement is out of the limits specified, there is
it with the specified. possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
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 Hot Check circuit
Due to high vacuum and large surface area of picture tube,
AC Volt-meter
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.
Good Earth Ground
such as WATER PIPE,
Leakage Current Cold Check(Antenna Cold Check) To Instrument's CONDUIT etc.
With the instrument AC plug removed from AC source, 0.15uF
exposed
connect an electrical jumper across the two AC plug prongs. METALLIC PARTS
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 1.5 Kohm/10W
antenna terminals, phone jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1M and 5.2M.
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.
DESCRIPTION OF CONTROLS
- When using the remote control aim it at the remote control sensor of the set.
- There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature.
displays the selected device. POWER
TV
switches the set on from standby or
VCR off to standby.
MODE DVD
selects another device. CABLE MULTIMEDIA
HDSTB selects Component 1/2, RGB-DTV,
D/A TV AUDIO RGB-PC, DVI-DTV or DVI-PC modes.
selects analogue or digital mode. switches the set on from standby.
MODE ARC (Aspect Ratio Control)
D/A TV POWER
changes the picture format.
TV/AV
selects the remote operating mode. MULTIMEDIA ARC
switches the set on from standby. TV/AV
TEXT
These buttons are used for teletext.
NUMBER buttons For further details, see the `Teletext'
1 2 3 section.
SLEEP switches the subtitle on or off in Digital
sets the sleep timer. 4 5 6 mode.
Note : In teletext mode, the PIP PR +/-,
7 8 9 SWAP and PIP INPUT buttons are used
MUTE SLEEP TEXT
switches the sound on or off. for teletext function.
0
VOL +/- (Volume Up/Down)
increases/decreases sound level.
GUIDE MUTE FAVOURITE
PR +/- (Programme Up/Down)
shows a programme schedule. VOL PR selects a programme.
(In Digital mode only) switches the set on from standby.
FAVOURITE
INFO LIST
INFO selects a favourite programme.
GUIDE PIP
displays information on top of the
screen during watching the TV. LIST
(In Digital mode only) displays the programme table.
MENU PIP
selects a menu. switches the sub picture on or off.
OK PIP PR +/-
selects a programme for the sub pic-
OK ture.
accepts your selection or displays SWAP
the current mode. alternates between main and sub
MENU EXIT picture.
D / E or F / G
adjusts menu settings. PSM SSM PIP INPUT
selects menu item. selects the input mode for the sub
picture.
PLAY PAUSE STOP RECORD
PSM (Picture Status Memory)
recalls your preferred picture setting. EXIT
REW FF SKIP
clears all on-screen displays and
returns to TV viewing from any
menu.
VCR BUTTONS PIP PR- PIP PR+ SWAP PIP INPUT SSM (Sound Status Memory)
controls a LG video cassette recalls your preferred sound setting.
recorder. UPDATE SIZE STILL I/II
TIME REVEAL ? MIX INDEX DVD BUTTONS
controls a LG DVD player.
I/II
selects the sound output or the audio
mode.
Remote Control Sensor
Power Standby Indicator
Illuminates red in standby
mode, Illuminates green
when the set is turned on
ON/OFF TV/AV MENU VOL PR
TV/AV Button
selects the TV, AV, Component,
RGB or DVI modes. If OSD is dis-
played, selects menu item.
Main Power Button switches the set on from standby.
MENU
displays on screen menus one by one.
exits the current menu.
memorizes menu changes.
D / E (Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
F / G (Volume Up/Down)
adjusts the volume.
adjusts menu settings.
- Shown is a simplified representation of the set.
- Here shown may be somewhat different from your set.
- This manual explains the features available on the DT-50PY10 series.
S-VIDEO
VIDEO
A/V INPUT 2
9
R AUDIO L/MONO
DIGITAL AUDIO (OPTICAL) MONITOR
COMPONENT 2 DVD
. OUTPUT
DTV
A/V
COMPONENT 1 INPUT INPUT 1
Antenna
UPGRADE REMOTE DVI COMPONENT 1 DVI INPUT RGB INPUT R L ANALOG/DTV AC INPUT
OUTPUT AUDIO INPUT R AUDIO L VIDEO S-VIDEO
PORT CONTROL INPUT INPUT (PC/DTV) (PC/DTV)
AUDIO INPUT VIDEO INPUT
1 2 3 4 5 6 7 8
1. UPGRADE PORT 6. AUDIO/VIDEO IN SOCKETS (A/V INPUT 1)
This port is used to upgrade the software version and debug Connect the audio/video out sockets of external equipment to
without changing the hardware. these sockets.
Be careful not to use this port. Just contact your dealer or ser- S-VIDEO/AUDIO IN SOCKETS
vice centre. Connect the S-VIDEO out socket of the VCR to the S-VIDEO
socket.
2. CONTROL LOCK / REMOTE CONTROL Connect the audio out sockets of the VCR to the audio sock-
ets as in A/V INPUT 1.
3. DVI INPUT/COMPONENT 1 INPUT/OUTPUT (DIGITAL AUDIO/VIDEO OUT SOCKETS (MONITOR OUTPUT)
AUDIO (OPTICAL))
Connect digital audio from various types of equipment. 7. ANTENNA INPUT
Note: In standby mode, these ports will not work.
8. POWER CORD SOCKET
4. DVI INPUT / AUDIO INPUT / RGB INPUT (PC/DTV) This Monitor operates on an AC power. The voltage is indi-
Connect the monitor output socket of the PERSONAL COM- cated on the Specifications page. Never attempt to operate
PUTER to this socket. the Monitor on DC power.
Note: If you want to use RGB/DVI audio, we strongly recom-
mend that you use the cable that has a core, or the EMI Filter 9. AUDIO/VIDEO IN SOCKETS (A/V INPUT 2)
core along with separate cable. S-VIDEO/AUDIO IN SOCKETS
5. COMPONENT INPUT
Connect DVD video outputs to Y, PB, PR of COMPONENT
INPUT and audio outputs to Audio sockets of AUDIO INPUT.
Antenna Connection
- Be careful for the bronze wire not to be bended in connecting to antenna input port.
COMPONENT AUDIO
REMOTE RS-232C INPUT DVI INPUT AUDIO INPUT RGB INPUT Y PB PR L R Antenna
CONTROL (CONTROL/SERVICE)
L(MONO) R
S-VIDEO VIDEO AUDIO
Apartments AV4
(connecting to wall antenna socket)
wall antenna socket
< Back panel of the set >
RF coaxial wire (75 ohms)
VHF antenna
UHF antenna
outdoor antenna
Private house
(connecting to wall outdoor antenna)
Watching VCR
- When connecting the Monitor to external equipment, match the colours of connecting ports (Video - yellow, Audio (L) - white,
Audio (R) -red).
- Connect the VIDEO OUTPUT socket (yellow) to the VIDEO INPUT on the set.
- If you have a mono VCR, connect the audio cable from the VCR to the AUDIO (L/MONO) input on the set.
- If you connect an S-VIDEO VCR to the S-VIDEO input, the picture quality is improved; compared to connecting a regular VCR
to the Video input.
- Use the orbiter function to Avoid having a fixed image remain on the screen for a long period of time. Typically a frozen still pic-
ture from a VCR. (Refer to p. 28)
If a 4:3 picture format is used; the fixed image may remain visible on the screen.
- To avoid picture noise (interference), leave an adequate distance between the VCR and the set.
Watching TV programmes < Back panel of the set >
- Turn the set on and select the programme you
want.
Watching VCR
1. Use the TV/AV button on the remote control to
select VIDEO 1 or VIDEO 2.
- If both S-VIDEO and VIDEO sockets have been COMPONENT 2 DVD
.
MONITOR
OUTPUT
DTV
connected to the S-VHS VCR simultaneously, only RGB INPUT R L
COMPONENT 1 INPUT
A/V
INPUT 1
Antenna
ANALOG/DTV AC
T R AUDIO L VIDEO S-VIDEO
the S-VIDEO can be received. (PC/DTV)
AUDIO INPUT VIDEO INPUT
2. Insert a video tape into the VCR and press the
PLAY button on the VCR.
(See VCR owner's manual)
< VCR >
Watching Cable TV
- After subscribing for a local cable TV station and installing a converter you can watch cable TV.
- For further information of cable TV, contact the local cable TV station.
< Back panel of the set > To watch cable TV
1. Use the TV/AV button on the remote control to
select VIDEO 1 or VIDEO 2.
2. Tune to cable service provided channels using
the cable box.
DVD MONITOR
COMPONENT 2 . OUTPUT
DTV
A/V
COMPONENT 1 INPUT INPUT 1
Antenna
RGB INPUT R L ANALOG/DTV AC I
NPUT R AUDIO L VIDEO S-VIDEO
(PC/DTV)
AUDIO INPUT VIDEO INPUT
< Cable box >
Watching DVD
How to connect
1. Connect the DVD video outputs (Y, PB, PR) to the COMPONENT (Y, PB, PR) INPUT jacks on the set and connect the DVD
audio outputs to the AUDIO INPUT jacks on the set, as shown in the figure.
2. If your DVD only has an S-Video output jack, connect this to the S-VIDEO input on the set and connect the DVD audio outputs
to the AUDIO INPUT jacks on the set, as shown in the figure.
Note:
a. If your DVD player does not have component video output, use S-Video.
b. Digital Audio will not work for Component 2 input source. Digital Audio operation has priority if Digital Audio and AUDIO L/R
are connected at the same time.
How to use