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
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 th e 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 1 W), keep the resistor 10 mm away from PCB.
Keep wires away from high voltage or high temperature parts.
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 1 MΩ and 5.2 MΩ.
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 1.5 K / 10 watt resistor in parallel with a 0.15 uF 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 exp ose d metallic par t. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5 mA.
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.
NOTE : Specifications and others are subject to change without notice for improvement
1. Application range
This spec sheet is applied all of the PDP TV with PD43A chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
(1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C
(2) Relative Humidity: 65 % ± 10 %
(3) Power Voltage
: Standard input voltage (AC 100-240 V~, 50/60 Hz)
* Standard Voltage of each products is marked by models.
(4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with
BOM.
(5) The receiver must be operated for about 5 minutes prior to the adjustment.
3. Test method
(1) Performance: LGE TV test method followed
(2) Demanded other specification
- Safety : CE, IEC specification
- EMC : CE, IEC
4. Module General Specification
- 50" FHD
NoItemSpecicationRemark
1Display Screen Device127 cm (50 inch) wide Color Display ModulePDP
This spec. sheet applies to PD43A chassis applied PDP TV all
models manufactured in TV factory.
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.
(2) Adjustment must be done in the correct order.
(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.
(4) The input voltage of the receiver must keep 100~240V,
50/60Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
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
- 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,.
3.2. DFT Process
* Depend on situation, Step can be changed.
■ After RGB Full White in HEAT-RUN Mode, the receiver must
be operated prior to the adjustment.
■ Enter into HEAT-RUN MODE
1) Press the POWER ON KEY on R/C for adjustment.
2) OSD display and screen display PATTERN MODE.
● Set is activated HEAT run without signal generator in this
mode.
● Single color pattern ( WHITE ) of HEAT RUN MODE uses to
check panel.
● Caution : If you turn on a still screen more than 20 minutes
(Especially digital pattern, cross hatch pattern), an
after image may be occur in the black level part of
the screen.
3. PCB Assembly adjustment
* Caution : Using ‘power on’ button of the control R/C power on
● Change target luminance and range of the Auto adjustment
W/B equipment
- 50/60R5
Target luminance50
Range±23
* Manual W/B process (using adjusts Remote control)
- Please Adjust in AV 1 MODE, Turn off Energy Saving Mode.
1) Enter ‘PICTURE RESET’ on Picture Mode, and then turn
off Fresh Contrast and Fresh colour in Advanced Control
2) After enter Service Mode by pushing “ADJ” key,
3) Enter White Pattern off of service mode, and change off
-> on.
4) Enter “W/B ADJUST” by pushing “►” key at “3. W/B
ADJUST”.
* Gain Max Value is 192. So, Never make any Gain Value
over 192 and please x one Value on 192, between R, G
and B.
MinTypMax
R-GAIN0192192
G-GAIN0192192
B-GAIN0192192
* Auto-control interface and directions
(1) Adjust in the place where the inux of light like oodlight
around is blocked. (Illumination is less than 10ux).
(2) Measure and adjust after sticking the Color Analyzer (CA-
100+, CA210) to the side of the module.
(3) Aging time
- After aging start, keep the Power on (no suspension of
power supply) and heat-run over 5 minutes
4.3. Serial number download & Model name D/L.
(1) Press "Power on" button of a service R/C.(Baud rate :
115200 bps)
(2) Connect RS232-C Signal Cable and start ‘Option Check
Program Ver3.8’
(3) Scan serial Number and press ‘F5’ button.
(4) Check ‘OK’ on program 1) program.
(5) Press ‘In start’ button on SVC R/C, check Serial Number
and Model Name.
4.4. Check Tool Option and write Country
Group & Area Code(Option) D/L
- Refer to Table 3.3 insert tool option.
4.5. PING TEST
* In this case Network setting is on Manual Setting.
Connect : SET->LAN Port == PC->LAN Port
* Auto adjustment Map (RS232C)
NoIndexCMD1CMD2Set IDData
1Startwb000
2Gain Startwb010
3Gain Endwb01F
4Offset Startwb020
5Offset Endwb02F
6Endwb0FF
7Medium Rja000~FF
8Medium Gj b000~FF
9Medium Bj c000~FF
10Warm Rj d000~FF
11Warm Gje000~FF
12Warm Bjf000~FF
13Cool Rjg000~FF
14Cool Gjh000~FF
15Cool Bji000~FF
16Cool R,G,Bjj000~FF
17Mediumjk000~FF
18Warmjl000~FF
4.5.1. Equipment Setting
(1) Play the LAN Port Test PROGRAM.
(2) Input IP set up for an inspection to Test
* IP Number : 12.12.2.2
4.5.2. LAN PORT inspection (PING TEST)
* In this case Network setting is on Manual Setting.
(1) Play the LAN Port Test Program.
(2) connect each other LAN Port Jack.
(3) Play Test (F9) button and confirm OK Message.
(4) remove LAN CABLE
(1) Equipment: RF R/C for test,
(2) You must confirm the battery power of RF-R/C before test
(Recommend that change the battery per every lot)
(3) Sequence (test)
1) if you select the ‘start key(Wheel Key)’ on the controller,
you can pairing with the TV SET.
2) You can check the cursor on the TV Screen, when select
the ‘Wheel Key’ on the controller
3) You must remove the pairing with the TV Set by select
‘Mute Key’ on the controller.
4.7. Wi-Fi Test
Step 1) Turn on TV
Step 2) Select ‘Network Connection’ option in Network Menu.
Step 3) Select ‘Start Connection’ Button in ‘Network
Connection’.
(2) When 3D OSD appear automatically, then press OK button
on ADJ Remote Controller.
(3) Check the picture. The picture must be same as below.
(Don’t have to wear 3D glasses.)
4.9 LNB voltage and 22KHz tone check
(1) Test method
1) Press "Power on" button of a service R/C.(Baud rate :
115200 bps)
2) Connect cable between satellite ANT and test JIG.
3) Connect RS232-C Signal Cable.
4) Write LNB ON control command through RS-232-C.
5) check LED light ‘ON’ at 18V menu.
6) check LED light ‘ON’ at 22KHz tone menu.
7) Write LNB OFF control command through RS-232-C.
8) check LED light ‘OFF’ at 18V menu.
9) check LED light ‘OFF’ at 22KHz tone menu.
(2) RS-232 command for test LNB
CommandSet ACK
LNB On[A][I][ ][Set ID][ ][30][Cr][O][K][x] or NG : [N][G][x]
LNB Off[A][I][ ][Set ID][ ][40][Cr][O][K][x] or NG : [N][G][x]
Step 4) If the system finds any AP like blow PIC, it is working
(1) Push the menu button and press red button on R/C to
enter ‘Customer Support’menu.
(2) Move to ‘signal test’ menu. And check Serial No & Model
Name Select the STATION -> Diagnostics -> To set
6. SW Download Guide.
* Before put a *.epk to USB Stick make ‘LG_DTV’ folder in
USB. Then, put *.epk file to ‘LG_DTV’ folder and Turn on TV
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update file in USB Stick
* If your downloaded program version in USB Stick is Low,
it didn’t work.
But your downloaded version is High, USB data is
automatically detecting.
(3) Show the message “Copying files from memory”
(4) Updating is staring.
(5) Updating Completed, The TV will restart automatically.
After turn on TV, Please press ‘IN-STOP’ button on ADJ
Remote-control.
* IF you don’t have ADJ R/C, enter ‘Factory Reset’ in
OPTION MENU.
(6) When TV turns on, check the Updated version on Product/
Service Info. MENU.
* After downloading, have to adjust TOOL OPTION again.
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 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
HDMI LEAKAGE Workaround in MTK A2(A0) (Default= with HDMI_LEAKAGE)
P_+5V
D
C1157
C1156
C1155
0.1uF
16V
OPT
0.1uF
16V
10uF
10V
+3.3V_MULTI
P_+5V
OPT
R1147
0
S
R1148
10K
G
Q1100
AO3438
D
C1153
0.1uF
16V
VDD3V3_HDMI
P_+17V
C1151
22uF
6.3V
+3.3V_MULTI
C1152
22uF
6.3V
5V
ZD2422
L1111
BLM18PG121SN1D
C1104
10uF
25V
POWER_ON2
C1106
10uF
25V
IC1101
C1149
3300pF
50V
TPS54327DDAR
EN
VFB
VREG5
SS
1
2
3
4
R1104
R1145
0
R1
1%
R1102
C1107
33K
22pF
50V
R1103
R2
10K
OPT
C1118
1uF
10V
10K
1%
THERMAL
3A
[EP]GND
VIN
8
9
7
6
5
VBST
SW
GND
0.1uF
C1150
16V
L1107
NR5040T2R2N
2.2uH
Vout=0.765*(1+R1/R2)
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
P_+17V
L1112
BLM18PG121SN1D
C1111
10uF
25V
POWER_ON3
+1.5V_DDR
LNB
C1145
10uF
16V
Max 1.3A
LNB
C1146
10uF
16V
LNB
C1147
15pF
50V
LNB
C1141
0.1uF
50V
-->3.12V
LNB
C1140
0.01uF
50V
17V->12V
IC1106
TPS54231D
BOOT
1
VIN
2
LNB
EN
3
SS
4
2A
$0.115
LNB
L1106
22.0uH
EAP61606601
LNB
D1100
PH
8
GND
7
COMP
6
VSENSE
5
SMAB34
40V
LNB
C1144
470pF
50V
LNB
R1135
51K
*NOTE 13
C1114
10uF
25V
R1117
10K
R1116
0
OPT
1%
R1
R1106
C1121
18K
22pF
50V
C1122
1uF
R1115
10V
51K
R1146
27K
R2
1%
1%
C1123
3300pF
50V
TPS54327DDAR
EN
VFB
VREG5
SS
1
2
3
4
IC1105
THERMAL
3A
[EP]GND
VIN
8
9
7
6
5
VBST
SW
GND
0.1uF
C1124
16V
L1103
NR5040T2R2N
2.2uH
C1125
22uF
6.3V
C1126
22uF
6.3V
C1138
22uF
6.3V
$0.122
Vout=0.765*(1+R1/R2)
P_+17V
LNB
L1113
BLM18PG121SN1D
LNB
C1131
10uF
25V
LNB
C1135
0.01uF
50V
POWER_ON4
LNB
R1127
16K
LNB
R1128
3.6K
OPT
R1107
0
+12V_LNB
LNB
R1139
6.8K
1%
R1140
1.6K
1%
R1138
120K
R1
1%
LNB
R2
LNB
Vout=0.8*(1+R1/R2)
MID_POWER
2011.11.25
24
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