50PC1R-ZH (CHASSIS:PP62A) - LG TV Service Manual (repair manual)

50pc1r-zh (chassis:pp62a) service manual
Model
50PC1R-ZH (CHASSIS:PP62A)
Pages
46
Size
14.2 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pc1r-zh-chassis-pp62a.pdf
Date

Read LG 50PC1R-ZH (CHASSIS:PP62A) Service Manual online

PLASMA TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : PP62A
MODEL : 50PC1R
50PC1R-ZH
- 2 -
CONTENTS
SAFETY PRECAUTIONS ....................................................................................3
DESCRIPTION OF CONTROLS ..........................................................................4
SPECIFICATIONS ................................................................................................9
ADJUSTMENT INSTRUCTIONS .......................................................................11
TROUBLE SHOOTING GUIDE ..........................................................................16
BLOCK DIAGRAM .............................................................................................25
EXPLODED VIEW ..............................................................................................26
EXPLODED VIEW PARTS LIST ........................................................................27
REPLACEMENT PARTS LIST...........................................................................28
SCHEMATIC DIAGRAM.........................................................................................
PRINTED CIRCUIT DIAGRAM ..............................................................................
- 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 monitor 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.
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 1M
Ω 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
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
OK 
INPUT
TV
TV
INPUT
PIP PR-
PIP PR+
SWAP
PIP INPUT
DVD
ARC
EXIT
VOL
TIME
REVEAL
INDEX
Q.VIEW
MUTE
PR
SLEEP
LIST
I/II
MENU
TEXT
PIP
SIZE
POSTION
VCR
POWER
1
2
3
4
5
6
7
8
9
*
10
FAV
?
POWER
TV INPUT
INPUT
ARC
Brightness
adjustment
Coloured 
buttons
PIP
SIZE
POSITION
PIP PR - /+
SWAP
PIP INPUT
VCR/DVD  
control buttons
EXIT
LIST
MENU
I/II
SLEEP
Switches the set on from standby or off to standby.
Returns from  AV1AV2S-Video2AV3AV4(except
42PC3RV*), ComponentRGBHDMI1/DVI or 
HDMI 2 
to the TV mode. 
Switches the set on from
standby.
If you press the button once, the input source OSD will
appear on screen as shown. Press the 
D
D
E
E
button
and then OK button to select the desired input source
(TVAV1AV2S-Video2AV3AV4(except 42PC3R*),
Component
RGBHDMI1/DVI or HDMI 2).
Selects your desired picture format. 
Adjusts screen brightness.
It returns to the default settings brightness by
changing mode source.
These buttons are used for teletext (only TELETEXT
models) or Programme edit.
Switches the sub picture PIP, DW, POP or off mode.
Adjusts the sub picture size.
Moves the sub picture.
Selects a programme for the sub picture.
Exchanges the main/sub images in PIP/Twin picture
mode.
Selects the input source for the sub picture in
PIP/Twin picture mode.
Controls some video cassette recorders or DVD
players when you have already selected DVD or
VCR mode button. 
Clears all on-screen displays and returns to TV
viewing from any menu.
Displays the programme table.
Selects a menu.
Selects the sound output.
Sets the sleep timer.
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- 4 -
DESCRIPTION OF CONTROLS
Page of 46
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Download LG 50PC1R-ZH (CHASSIS:PP62A) Service Manual (Repair Manual)

Here you can read online and download LG 50PC1R-ZH (CHASSIS:PP62A) Service Manual in PDF. 50PC1R-ZH (CHASSIS:PP62A) service manual will guide through the process and help you recover, restore, fix, disassemble and repair LG 50PC1R-ZH (CHASSIS:PP62A) Plasma. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.