Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PC1D_DV_PDP42V8_PD61A_[SM]
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website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
PLASMA TV
SERVICE MANUAL
CHASSIS : PD61A
MODEL : 42PC1D/DV
42PC1D/DV-EC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS
SAFETY PRECAUTIONS ....................................................................................3
DESCRIPTION OF CONTROLS ..........................................................................4
SPECIFICATIONS ..............................................................................................10
ADJUSTMENT INSTRUCTIONS .......................................................................12
TROUBLE SHOOTING GUIDE ..........................................................................17
PRINTED CIRCUIT DIAGRAM ..........................................................................22
BLOCK DIAGRAM .............................................................................................26
EXPLODED VIEW .........................................................................................28,30
EXPLODED VIEW PARTS LIST ...................................................................29,31
REPLACEMENT PARTS LIST...........................................................................32
SCHEMATIC DIAGRAM.........................................................................................
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
POWER
Switches the set between ON and STANDBY.
D/A TV (Digital TV / Analogue TV)
Selects digital or analogue mode.
INPUT
D/A TV INPUT Selects the DTV, TV, AV, Component, RGB or HDMI
POWER
modes.
switches the set on from standby.
DVD VCR
TV
GUIDE
ARC SUBTITLE
/ TV, DVD, VCR
PIP PR+ SWAP
Selects the remote operating mode: TV, VCR, DVD.
PIP INP
PIP PR
- UT Select other operating modes, for the remote to oper-
PIP
INFO i BACK
SLEEP ate external devices.
TEXT
EXIT
GUIDE
MENU
Shows programme schedule.
ARC (Aspect Ratio Control)
OK
Selects your desired picture format.
SUBTITLE/
*
Recalls your preferred subtitle in digital mode.
PIP
VOL MUTE FAV PR
Switches the sub picture on or off,select PIP, DW1/2
or POP modes.
1 2 3 SIZE
Adjusts the sub picture size.
4 5 6
POSITION
7 8 9 Moves the sub picture position.
LIST 0 Q.VIEW
PIP PR +/-
Selects a programme for the sub picture.
SIZE POSITION INDEX REVEAL
i ? SWAP
TIME I/II Alternates between main and sub picture.
PIP INPUT
Selects the input mode for the sub picture.
BACK
Allow the user to move back one step in an inter-
active application, EPG or other user interaction
function.
SLEEP
Sets the sleep timer.
MENU
Displays on screen menus one by one.
Exits the current menu.
Memorizes menu changes.
D/A TV INPUT TELETEXT BUTTONS
POWER These buttons are used for teletext.
Text button is used to enable teletext services while
TV
DVD VCR other buttons are for teletext functions. * For further
ARC
details, see the `Teletext' section.
SUBTITLE
GUIDE /
PIP PR+ SWAP PIP INP
-
PIP PR UT
INFO i BACK EXIT
SLEEP
PIP Clears all on-screen displays and returns to TV
TEXT
viewing from any menu.
MENU EXIT
OK
Accepts your selection or displays the current
OK
mode.
D /E /F /G
Adjusts menu settings.
Selects menu item.
COLOURED BUTTONS
VOL MUTE FAV PR They are used as per the indications or functions dis-
played on TV screen in case of Text displays
(Teletext, EPG) and programme edit.
1 2 3
4 5 6 VOL D / E (Volume Up/Down)
Increases/decreases sound level.
7 8 9
PR D / E (Programme Up/Down)
LIST 0 Q.VIEW Selects a programme.
MUTE
SIZE POSITION INDEX REVEAL Switches the sound on or off.
i ?
TIME I/II FAV (FAVOURITE)
Displays the selected favourite programmes.
NUMBER BUTTONS
LIST
Displays the programme table.
Q.VIEW
Returns to the previously viewed programme.
Front Panel Controls
INPUT MENU OK VOL PR
INPUT Button
OK Button PROGRAMME Buttons
Power/Standby
Indicator POWER Button
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