LG 42PT350R-TD / 42PT351R-TC / 42PT352R-TB (CHASSIS:PP11K) Service Manual ▷ View online
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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 Exploded View.
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.
the Schematic Diagram and Exploded View.
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.
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.
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.
with the specified.
When replacing a high wattage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm away from PCB.
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.
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 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.
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.
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
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF
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SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
V
Application Range
This spec is applied to PDP TV used PP11K Chassis.
V
Specification
Each part is tested as below without special appointment.
(1) Temperature : 25 °C ± 5 °C (77 °F ± 9 °F), CST : 40 ± 5
(2) Relative Humidity: 65 % ± 10 %
(3) Power Voltage: Standard Input voltage (100 V - 240 V ~, 50 / 60 Hz)
(1) Temperature : 25 °C ± 5 °C (77 °F ± 9 °F), CST : 40 ± 5
(2) Relative Humidity: 65 % ± 10 %
(3) Power Voltage: Standard Input voltage (100 V - 240 V ~, 50 / 60 Hz)
* Standard Voltage of each product is marked by models.
(4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with
SBOM.
(5) The receiver must be operated for about 20 minutes prior to the adjustment.
V
Test Method
(1) Performance : LGE TV test method followed.
(2) Demanded other specification
(2) Demanded other specification
Safety : CE, IEC specification
EMC : CE, IEC
EMC : CE, IEC
V
Module Specification
(1) 42” -2D HD
42PT350R-TA
42PT351R-TC
NON-EU
LG
Model Name
Market Place
Brand
Model Name
42PT350R-TA
42PT351R-TC
Remark
Safety : IEC/ EN60065, EMI : CISPR13
Market
NON-EU
Appliance
TEST
No
Item
Specification
Remark
1
Display Screen Device
106 cm (42 inch) wide Color Display Module
PDP
2
Aspect Ratio
16:9
3
PDP Module
PDP42T3####,
RGB Closed (Well) Type, Glass Filter (38%)
Pixel Format: 1024 horiz. By 768 ver
4
Operating Environment
1) Temp. : 0 deg ~ 40 deg
2) Humidity : 20 % ~ 80 %
5
Storage Environment
3) Temp. : -20 deg ~ 60 deg
LGE SPEC
4) Humidity : 10 % ~ 90 %
6
Input Voltage
AC 100 V ~ 240 V, 50 / 60 Hz
Maker LG
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V
Model General Specification
(1) NON - EU Spec.(TA)
No
Item
Specification
Remark
1.
Market
NON EU
2.
Broadcasting system
PAL/SECAM-BG/I/DK, NTSC-M
3.
Available Channel
BAND
PAL
NTSC
China(DK)
Australia(BG)
VHF/UHF
E2 ~ C69
2~78
VHF/UHF
C1~C62
C1~C75
CATV
S21 ~ S41
1~71
CATV
S1~S41
S2~S44
4.
Receiving system
Upper Heterodyne
5.
Video Input (2EA)
PAL,SECAM, NTSC
Rear 1EA, Side 1EA
6.
Component Input (2EA)
Y/Cb/Cr, Y/ Pb/Pr
7.
RGB Input (1EA)
RGB-PC
8.
HDMI Input 2ea
HDMI-DTV , Only PCM MODE
Side HDMI(1), Rear HDMI(1)
: 42/50PT250R-TA only
3ea
Side HDMI(1), Rear HDMI(2)
9.
Audio Input (5EA)
L/R Input(PC 1EA, Component 2EA,
Rear 1EA, Side 1EA)
10.
RS-232C (1EA)
Remote control
11.
USB Input (1EA)
SD DivX, MP3, JPEG,
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec sheet is applied to all of the PP11K chassis.
2. Specification
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
(3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep 100 V
~ 240 V, 50 / 60 Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15 °C
15 °C
- In case of keeping module is in the circumstance of 0 °C,
it should be placed in the circumstance of above 15 °C
for 2 hours
for 2 hours
- In case of keeping module is in the circumstance of below
-20 °C, it should be placed in the circumstance of above
15 °C for 3 hours,.
15 °C for 3 hours,.
3. S/W Program Download
3-1. Profile
This is for downloading the s/w to the flash memory of the
IC402
IC402
3-2. Equipment
(1) PC
(2) ISP_tool program
(3) Download jig
(2) ISP_tool program
(3) Download jig
3-3. Connection Structure
3-4. Connection Condition
(1) IC name and circuit number : Flash Memory and IC402
(2) Use voltage : 3.3V (5 pin)
(3) SCL : 15 pin
(4) SDA : 12 pin
(5) Tact time : about 2min and 30seconds
(2) Use voltage : 3.3V (5 pin)
(3) SCL : 15 pin
(4) SDA : 12 pin
(5) Tact time : about 2min and 30seconds
3-5. Download Method (By using MSTAR JIG)
- Preliminary Steps
(1) Download method (PCB Ass’y)
(1) Download method (PCB Ass’y)
- HD
1) Connect the download jig to D-sub jack
2) Connect the PC to USB jack
(2) Download Steps
1) Execute ‘ISP Tool’ program in PC, then a main window
will be opened
2) Click the connect button and confirm “Dialog Box”
Double click