led tv service manual

Internal Use Only
North/Latin America
Europe/Africa
Asia/Oceania
http://aic.lgservice.com
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LED TV
SERVICE MANUAL
CHASSIS : LM91M
MODEL : 22LN41**
22LN41**-T*
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67698501 (1302-REV00)
Printed in Korea
CONTENTS
CONTENTS . ............................................................................................. 2
SAFETY PRECAUTIONS ......................................................................... 3
SERVICING PRECAUTIONS..................................................................... 4
SPECIFICATION........................................................................................ 6
ADJUSTMENT INSTRUCTION................................................................. 9
TROUBLE SHOOTING GUIDE................................................................ 13
BLOCK DIAGRAM................................................................................... 23
EXPLODED VIEW .................................................................................. 24
SCHEMATIC CIRCUIT DIAGRAM ..............................................................
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
-2-
LGE Internal Use Only
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 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
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
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 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.
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 exposed metallic part. 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.
Leakage Current Hot Check circuit
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.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
-3-
LGE Internal Use Only
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conflict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precautions. Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board
module or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug
or other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an explosion hazard.
2. Test high voltage only by measuring it with an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. Unless specified otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10 % (by volume) Acetone and 90 %
(by volume) isopropyl alcohol (90 % - 99 % strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication
of contacts in not required.
5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.
6. Do not apply AC power to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks
are correctly installed.
7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive
lead.
Always remove the test receiver ground lead last.
8. Use with this receiver only the test fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component damage caused by static by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent
potential shock reasons prior to applying power to the unit
under test.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder
ES devices.
4. Use only an anti-static type solder removal device. Some solder removal devices not classified as “anti-static” can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or
comparable conductive material).
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will
be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your
foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within
the range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wirebristle (0.5 inch, or 1.25 cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 °F to 600 °F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suctiontype solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
b. First, hold the soldering iron tip and solder the strand
against the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder flows onto and around both the component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess or
splashed solder with a small wire-bristle brush.
-4-
LGE Internal Use Only
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by
gently prying up on the lead with the soldering iron tip as the
solder melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing
the IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close
as possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and
if necessary, apply additional solder.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC connections).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the
good copper pattern. Solder the overlapped area and clip off
any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the
lead of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
-5-
LGE Internal Use Only
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range
3. Test method
This specification is applied to the LB35B chassis.
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety : CE, IEC specification
- EMC : CE, IEC
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.
4. Model General Specification
* HDMI 1.4 with Deep Color is only apply for FHD Model
No.
Item
Specification
Remarks
1.
Market
NON EU
2.
Broadcasting system
PAL/SECAM B/G/D/K
PAL-I
NTSC-M
3.
Channel Storage
4.
Receiving system
Upper Heterodyne
5.
Video Input
PAL, SECAM, NTSC
Rear (2EA)
6.
Component Input
Y/Cb/Cr, Y/Pb/Pr
Rear (1EA)
7.
USB Input
MP3, JPEG,Movie
Side(1EA)
8.
AV Audio Output
RF/AV/HDMI Audio Output
Rear (1EA)
9.
D-SUB INPUT
S/W Upgrade Only
Rear (1EA)
10.
HDMI Input
HDMI-DTV, Only PCM MODE
Rear (2EA)
11.
Audio Input (1EA)
AV&Component
L/R Input(2EA)
BAND
PAL(BG,I)
NTSC(M)
China(DK)
VHF/UHF
01-C69
2~78
C1~C69
Cable
S1~S47
1~71
S1~S47
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
-6-
LGE Internal Use Only
5. Component Video Input (Y, PB, PR)
No.
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel clock(MHz)
Proposed
1.
720*480
15.73
59.94
13.500
SDTV, DVD 480I(525I)
2.
720*480
15.75
60.00
13.514
SDTV, DVD 480I(525I)
3.
720*576
15.625
50.00
13.500
SDTV, DVD 576I(625I) 50Hz
4.
720*480
31.47
59.94
27.000
SDTV 480P
5.
720*480
31.50
60.00
27.027
SDTV 480P
6.
720*576
31.25
50.00
27.000
SDTV 576P 50Hz
7.
1280*720
44.96
59.94
74.176
HDTV 720P
8.
1280*720
45.00
60.00
74.250
HDTV 720P
9.
1280*720
37.50
50.00
74.25
HDTV 720P 50Hz
10.
1920*1080
28.125
50.00
74.250
HDTV 1080I 50Hz,
11.
1920*1080
33.72
59.94
74.176
HDTV 1080I
12.
1920*1080
33.75
60.00
74.25
HDTV 1080I
13.
1920*1080
56.25
50
148.5
HDTV 1080P
14.
1920*1080
67.432
59.94
148.350
HDTV 1080P
15.
1920*1080
67.5
60.00
148.5
HDTV 1080P
6. HDMI Input
6.1. PC Mode
* Spec. out but it can be shown the picture at only HDMI/DVI IN 1 via DVI to HDMI Cable
No.
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
1.
640×480
Resolution
31.469
59.94
25.17
VESA(VGA)
Proposed
2.
800×600
37.879
60.317
40.00
VESA(SVGA)
3.
1024×768
48.363
60.004
65.00
VESA(XGA)
4.
1280×768
47.776
59.87
79.5
VESA(WXGA)
5.
1360×768
47.72
59.799
84.62
VESA(WXGA)
6
1366×768
47.7
60.00
84.62
WXGA
7.
1280×1024
63.595
60.00
108.875
SXGA
8.
1920×1080
66.647
59.988
138.625
WUXGA
Remarks
*Monitor Range Limits
Min Vertical Freq - 58 Hz / Max Vertical Freq - 63 Hz
Min Horiz. Freq - 28 kHz / Max Horiz. Freq - 68 kHz
Pixel Clock - 150 MHz
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
-7-
LGE Internal Use Only
6.2. DTV Mode
No.
H-freq(kHz)
V-freq.(kHz)
Pixel clock(MHz)
1.
720*480
Resolution
15.73
59.94
13.500
SDTV, DVD 480I(525I)
Proposed
2.
720*480
15.75
60.00
13.514
SDTV, DVD 480I(525I)
3.
720*576
15.625
50.00
13.500
SDTV, DVD 576I(625I) 50Hz
4.
720*480
31.47
59.94
27
SDTV 480P
5.
720*480
31.5
60.00
27.027
SDTV 480P
6.
720*576
31.25
50.00
27
SDTV 576P
7.
1280*720
44.96
59.94
74.176
HDTV 720P
8.
1280*720
45
60.00
74.25
HDTV 720P
9.
1280*720
37.5
50.00
74.25
HDTV 720P
10.
1920*1080
28.125
50.00
74.25
HDTV 1080I
11
1920*1080
33.72
59.94
74.176
HDTV 1080I
12
1920*1080
33.75
60.00
74.25
HDTV 1080I
13
1920*1080
56.25
50.00
148.5
HDTV 1080P
14
1920*1080
67.432
59.94
148.350
HDTV 1080P
15
1920*1080
67.5
60.00
148.5
HDTV 1080P
16
1920*1080
27
24.00
74.25
HDTV 1080P
17
1920*1080
33.75
30.00
74.25
HDTV 1080P
18
1920*1080
26.97
23.97
74.25
HDTV 1080P
19
1920*1080
33.716
29.976
74.25
HDTV 1080P
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
-8-
Remarks
Spec. out but display.
LGE Internal Use Only
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED TV with
LB35B chassis.
3.2. EDID Download
2. Designation
(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 100-220 V,
50/60Hz.
(5) The receiver must be operated for over 5 minutes prior to
the adjustment when module is in the circumstance of
above 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.
* Caution
When a still image is displayed for 20 minutes or longer
(especially where W/B scale is strong. Digital pattern 13ch
and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
3. MAIN PCBA Adjustments
3.1. ADC Calibration
3.1.1. Using D/L Jig
- An ADC calibration is automatically adjusted from DFT-Jig
- If it needs to adjust manually, refer to appendix.
Item
Enter Adjust
MODE
Adjust
‘Mode In’
ADC adjust
ADC
Adjust
A
A
D
0
1
1
FF
17
49
01
00
88
20
3A
03
22
0C
80
10
F0
18
00
2
FF
01
4B
01
C4
35
54
3F
28
1F
00
35
10
16
71
00
3
FF
03
21
01
8E
00
56
1C
F1
10
10
00
3E
00
1C
00
4
FF
80
08
01
21
BC
0A
44
4F
26
00
BC
96
26
16
00
** HDMI 1 : 256Bytes
5
6
7
8
9
FF FF 00 1E 6D
A0 5A 78 0A F3
00 45 40 01 01
01 01 1D 00 72
00 00 1E 1B 21
77 21 00 00 1C
20 20 20 20 20
0F 00 0A 20 20
84 07 01 16 02
11 07 50 09 7F
80 1E 00 01 1D
88 21 00 00 1E
00 13 8E 21 00
7C 43 00 C4 8E
20 58 2C 25 00
00 00 00 00 00
A
01
30
61
51
50
00
20
20
03
07
00
8C
00
21
C4
00
B
00
A4
40
D0
A0
00
20
20
11
83
80
0A
18
00
8E
00
C
01
54
01
1E
51
00
00
20
12
01
51
D0
8C
00
21
00
D
01
46
01
20
00
FC
00
20
13
00
D0
8A
0A
98
00
00
E
01
96
01
6E
1E
00
00
01
14
00
1C
20
A0
01
00
00
F
01
26
01
28
30
4C
FD
ⓐ
05
68
20
E0
14
1D
9E
ⓐ
5
FF
A0
00
01
00
88
20
0F
90
11
80
88
00
7C
20
00
A
01
B0
61
71
50
00
20
20
03
07
00
8C
00
21
C4
00
B
00
A3
40
38
A0
00
20
20
11
83
80
0A
18
00
8E
00
C
01
57
01
2D
51
00
00
20
12
01
51
D0
8C
00
21
00
D
01
49
01
40
00
FC
00
20
13
00
D0
8A
0A
98
00
00
E
01
9C
81
58
1E
00
00
01
04
00
1C
20
A0
01
00
00
F
01
25
80
2C
30
4C
FD
ⓐ
14
68
20
E0
14
1D
9E
ⓐ
▪ 8BIT FHD MODEL
** HDMI 1 : 256Bytes
0
1
2
3
0 00 FF FF FF
10 01 17 01 03
20 11 49 4B 21
30 01 01 D1 C0
40 45 00 08 44
50 48 88 35 00
60 47 20 54 56
70 00 3A 3F 1C
80 02 03 28 F1
90 05 20 22 1F
A0 03 0C 00 10
B0 40 80 35 00
C0 2D 10 10 3E
D0 51 F0 16 00
E0 80 18 71 1C
F0 00 00 00 00
4
FF
80
08
01
21
BC
0A
44
4F
26
00
BC
96
26
16
00
6
FF
5A
01
02
00
21
20
00
07
07
1E
21
13
43
58
00
EDID C/S data
CMD 1 CMD 2 Data 0
A
0
10
20
30
40
50
60
70
80
90
A0
B0
C0
D0
E0
F0
0
00
01
0F
01
55
48
47
00
02
20
03
40
2D
51
80
00
0
When transfer the ‘Mode In’,
Carry the command.
0
Automatically adjustment
(The use of a internal pattern)
Block 0
Check sum
(Hex)
Block 1
Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component1 Input (480i)]
▪ ad 00 10 [Adjust 480i Comp1]
▪ aa 00 90 End Adjust mode
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
7
00
78
01
3A
1E
00
20
0A
01
50
00
00
8E
00
2C
00
8
1E
0A
45
80
1B
00
20
20
16
09
01
00
21
C4
25
00
9
6D
D9
40
18
21
1C
20
20
02
7F
1D
1E
00
8E
00
00
a. White Balance Adjustment
* ADC Calibration Protocol (RS232)
NO
▪ HD MODEL
-9-
HD
HDMI
A5
44(HDMI1)
34(HDMI2)
FHD (8Bit)
HDMI
C1
44 (HDMI1)
34 (HDMI2)
LGE Internal Use Only
4. White Balance Adjustment
(2) Adjustment Map
4.1. Overview
Adj. item
4.1.1. W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel’s W/B deviation
(2) How-it-works: When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value.
(3) Adj. condition: normal temperature
1) Surrounding Temperature: 25 °C ± 5 °C
2) Warm-up time: About 5 Min◦
3) Surrounding Humidity: 20% ~ 80%
4) B efore White balance adjustment, Keep power on
status, don’t power off
Cool
Medium
4.1.2. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux.
Try to isolate adj. area into dark surrounding.
(2) P
robe location: Color Analyzer(CA-210) probe should be
within 10 cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
1) After Aging Start, Keep the Power ON status during 5
Minutes.
2) In case of LCD, Back-light on should be checked using
no signal or Full-white pattern.
Warm
00
00
00
C0
C0
C0
j
j
j
d
e
f
00
00
00
C0
C0
C0
(1) Set TV in ADJ mode using P-Only key(or POWER ON key).
(2) Place optical probe on the center of the display.
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode. (Cool, Medium,
Warm)
(6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
4.5.2. LED White balance table
RS -232C
Co m p ut er
RS -232C
Pat t ern Generat o r
- If Model is Polaris Model, G-gain fix is applied.
(1) Cool Mode
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) P rinciple : To adjust the white balance without the
saturation, Fix the G gain to 172 (default data) and
change the others (R/B Gain ).
3) Adjustment mode : mode - Cool
(2) Medium / Warm Mode
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) P rinciple : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 192 (default
data) and decrease the others.
3) Adjustment mode : Two modes - Medium / Warm
Signal Source
* If TV internal pattern is used, not needed
4.4. Adjustment Command (Protocol)
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND
a
b
c
4.5.1. Auto WB calibration
Co lo r Analyzer
RS -232C
j
j
j
Default
(Decimal)
4.5. Adjustment method
4.3. Equipment connection
Probe
Data Range
(Hex.)
MIN
MAX
00
C0
00
C0
00
C0
G Cut
4.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) A dj. Computer (During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
* Color Analyzer Matrix should be calibrated using CS-1000.
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
R Gain
G Gain
B Gain
R Cut
Command
(lower caseASCII)
CMD1
CMD2
j
g
j
h
j
i
Explantion
CMD
DATA
ID
wb
00
00
Begin White Balance adjustment
wb
00
ff
End White Balance adjustment
(internal pattern disappears )
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 10 -
LGE Internal Use Only
4.6. Reference(White Balance Adjustment
coordinate and color temperature)
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
■ The spec of color temperature and coordinate.
Mode
Color Temp
Color coordinate
Cool
(C50)
13,000 K
x = 0.269 (±0.002)
y = 0.273 (±0.002)
Medium
(0)
9,300 K
x = 0.285 (±0.002)
y = 0.293 (±0.002)
Warm
(W50)
6,500 K
x = 0.313 (±0.002)
y = 0.329 (±0.002)
Remark
8. GND and HI-POT Test
8.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
8.2. GND & HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
process automatically.
* Test signal
- Inner pattern for
W/B adjust
- External white
pattern
(85IRE, 204gray)
* Note : x,y coordinates are drifted about 0.007 after 30 mins
heat-run. So checking color coordinate within 5-min at
total assembly line, consider x,y coordinates might be
up to 0.007 than x,y target of each color temperature.
5. Tool Option setting & Inspection per
countries
8.3. Checkpoint
(1) Press 'IN START' key at Factory Service remote control.
(2) Select 'Tool Option 1'.
(3) Punch in the number and press 'OK'. (Each of models has
their number)
(4) Correct 'Tool Option2' ~ 'Tool Option5'.
(5) Completed adjusting Tool option.
(1) Test voltage
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
(2) TEST time: 1 second
(3) TEST POINT
-G
ND Test = POWER CORD GND and SIGNAL CABLE
GND.
-H
i-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5 mArms
6. Ship-out mode check (In-stop)
▪ A fter final inspection, press In-Stop key of the Adjustemnt
Remote Control and check that the unit goes to Stand-by mode.
7. AUDIO output check
7.1. Audio input condition
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
(3) RGB PC: 1KHz sine wave signal (0.7Vrms)
7.2. Specification
Item
Min
Typ
Max
Unit
Remark
Audio practical
max Output, L/R
(Distortion=10%
max Output)
4.5
5.0
6.0
W
Vrms
(1) Measurement condition
- EQ/AVL/Clear Voice: Off
(2) Speaker (8Ω Impedance)
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 11 -
LGE Internal Use Only
9. USB S/W Download
10. Optional adjustments
* optional, Service only
10.1. Manual ADC Calibration
■ Enter ‘EZ ADJUST’ mode by pressing ‘ADJ’ key.
■ Enter Internal ADC calibration mode by pressing ‘’ or ‘OK’
key at ‘7. ADC Calibration’
(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 lower
than that of TV set, it didn’t work.
Otherwise USB data is automatically detected.
(3) Show the message “Copying files from memory”.
ADC Calibration
EZ ADJUST
0. Tool Option1
NG
ADC Comp 480i
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
ADC Comp 1080p
NG
ADC RGB
NG
Start
5. Tool Option Commercial
Reset
6. Country Group
7. Area Option
8. ADC Calibration
►
9. White Balance
10. 10 Point WB
11. Test Pattern
12. EDID D/L
13. Sub B/C
14. Ext. Input Adjust
► Caution : U sing ‘P-ONLY’ key of the Factory Service
remote control when turns TV on.
10.2. Manual White balance Adjustment
10.2.1. Adjustment condition and cautionary items
(4) Updating is starting.
(5) Updating Completed, The TV will restart automatically.
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn't
have a DTV/ATV test on production line.
* After downloading, have to adjust TOOL OPTION again.
1) Push "IN-START" key in service remote control.
2) Select "Tool Option 1" and push "OK" key.
3) Punch in the number. (Each model has their number.)
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux. Try to isolate adj. area into dark
surrounding.
(2) Probe location: Color Analyzer (CA-210) probe should be
within 10cm and perpendicular of the module surface.
(80°~ 100°)
(3) Aging time
1) After Aging Start, Keep the Power ON status during 5
Minutes.
2) In case of LCD, Back-light on should be checked using
no signal or Full-white pattern.
10.2.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) Adj. Computer(During auto adj., RS-232C protocol is needed)
(3) Adjust Remot control
(4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model: 217, Pattern: 78)
10.2.3. Adjustment
(1) Set TV in Adj. mode using POWER ON.
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface.
(3) Press ADJ key → EZ adjust using adj. R/C → 6. WhiteBalance then press the cursor to the right (Key►). When
Key(►) is pressed 216 Gray internal pattern will be
displayed.
(4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
■ If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 216 Gray pattern.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 12 -
LGE Internal Use Only
TROUBLE SHOOTING
1. NO POWER-Main PCBA
NO POWER
1
Is Adapter
Output VOLTAGE 19.4V
through of JK700?
NO
check open or short at Line.
or change Adapter.
YES
2
Is 3.3V at C708?
check the Lines of IC701,
If there is any problem at Line,
Change IC701
NO
YES
3
Is 1.8V at C745?
is 1.25V at C742?
check the Lines of IC711,IC704
If there is any problem at Line,
Change IC704,IC706.
NO
YES
4
Check waveform of X501
Check Line short or open between
IC501 and X501,
Change IC501 or change X501
NO
YES
5
is 3.3V at 1pin of P120?
when push power key,
Is 0v at 2pin of P120?
NO
Change control
Or check Line short or open of P120
NO
change IR board
Or check Line short or open of P120
YES
6
is there any waver at 11pin of P120,
when use remote controller?
4
Insert F/W
X501
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 13 -
LGE Internal Use Only
2. No raster (Power LED blue, black screen)
NO RASTER
(Screen is not displayed)
1
Is 19.4V at JK700?
NO
check open or short at Line.
or change Adapter
YES
2
Is 1.8V at L501?
Is 1.25V at L500?
NO
YES
3
Is 1.25V at 4pin of IC704?
Is 1.8V at 2pin of IC711?
NO
YES
4
is 3V at 3pin of IC801?
NO
YES
5
Put into LVDS cable completely?
LVDS cable have damage?
NO
YES
6
is 12V at 1pin of P101?
NO
YES
Check Line short or open between
IC711/IC704 and IC501,
If there is any problem at Line,
Change IC711/IC704 or change IC501
check open or short at Line and waf er
between IC704,IC711 and IC600.
If there is any problem at Line,
Change IC704,IC711 or IC501
It is not over 3V at 1pin of IC801.
Change Q802.
Or check Line short or open between
R803 and 95pin of IC501.
Change IC 501.
If LVDS cable isn’t insulted enough,
Insult LVDS cable until locking hook.
If LVDS cable have damage,
Change LVDS cable
If is not under 1.5V at R722,
change Q721 or check open and short
of Line among Q720 and Q721.
If is under 11V at L110,
Check open and short
Of line between L110 and P101.
Insert the F/W back
or REPLACE LCD MODULE
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 14 -
LGE Internal Use Only
3. Abnormal/No screen (All input)-Main PCBA
Abnormal/No screen
(all input)
1
NO
Put into LVDS cable completely?
LVDS cable have damage?
YES
2
NO
Is 12V at 1pin of P101?
YES
3
Check waveform at signal
line of P101 (Clock:9,10
Data: 6,7,12,13,15,16,18,19)
NO
If LVDS cable isn’t insulted enough,
Insult LVDS cable until locking hook.
If LVDS cable have damage,
Change LVDS cable
If is not under 1.5V at R722,
change Q721 or check open and short
of Line among Q720 and Q721.
If is under 11V at L110,
Check open and short
Of line between L110 and P101.
Check open and short
Of line between Q720 and P101.
Or Check LVDS cable have damage.
Another is change IC501.
YES
Change module
WAVEFORMS
3
9,10Pin of P101
(Clock line)
6,7,12,13,15,16,18,19 Pin of 1201
(Data Line)
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 15 -
LGE Internal Use Only
4. Abnormal screen (TV)-Main PCBA
Abnormal screen (TV)
1
insult RF cable tight and then
Cable nut screw tight.
NO
Put into RF cable completely?
YES
2
If 1.7V is not at plus pin of TU401, check
It is over 3V at 2pin of IC401,
if it is not, Check Line between TU401
and IC401 is open or short.
Another is change IC401 or TU401
NO
Is 1.8V at 7pin of TU401?
3
Is I2C waveform
At 3,4pin of TU401?
NO
Check Line between TU401 and IC501
is open or short, Another is change
IC501 or TU401
4
Is IF waveform at 43
,44 pin of IC501?
NO
Check Line between TU401 and IC501
is open or short, Another is change
IC501 or TU401
Change Main PCBA
WAVEFORMS
3
4
3Pin of TU401 (SCL)
4Pin of TU401 (SDA)
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 16 -
43,44pin of IC501
LGE Internal Use Only
5. Abnormal screen (AV)-Main PCBA
Abnormal screen (AV)
1
NO
wœ›G•›–Gh}GŠˆ‰“ŒGŠ–”—“Œ›Œ“ f
Insult AV cable tight
YES
2
NO
pšGp•—œ›G šŽ•ˆ“G›”•ŽG
ˆ•‹G–™”ˆ›G •Gš—ŒŠf
Change Timing to 480I, 576I
Or change f ormat CVBS
YES
3
pšGžˆŒ–™”G ˆ›Gy\W\
Check Line between JK101 and IC501
is open or short, Another is
change AV cable
NO
YES
Change IC501
WAVEFORMS
3
y\W\GOj}izP
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 17 -
LGE Internal Use Only
6. Abnormal screen (HDMI)-Main PCBA
Abnormal screen (HDMI)
1
NO
Put into HDMI
cable completely?
insulted HDMI cable
YES
2
Change Timing according to
product spec, change f ormat
under 8 bit in Ycbcr, Ypbpr, RGB
NO
Is Input signal timing
and format in spec?
YES
3
Check Line between JK204 and IC501
is open or short, Another is
Change HDMI cable
Can read EDID and
HDCP key though
16,15pin of JK204
YES
4
Check Line between JK204 and IC501
is open or short, Another is
Change IC501 or HDMI cable
Is 5V at 19pin of JK204?
YES
5
Is waveform at 10,12pin
of JK204?
Check Line between JK204 and IC501
is open or short, Another is
Change HDMI cable
NO
YES
6
Is waveform at 1,3,4,6,7,9pin
Of JK204?
Check Line between JK204 and IC501
is open or short, Another is
Change HDMI cable
NO
YES
Change IC501
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 18 -
LGE Internal Use Only
7. No sound (all source )-Main PCBA
NO sound (All source)
1
NO
Does wire connect P301 with speaker?
YES
2
If 8V is not plus at L703, check
of JK700 is open.
If is not Check Line between L703
and IC301 is open or short.
.Another is change IC301
NO
Is 19.4V at 19,20,31,32pin
of IC301 ?
YES
3
If 3V is not plus 30pin of IC301,
check It is over 3V at L301
if it is not, Check Line between L301
and IC301 is open or short.
Another is change IC701,IC301
NO
Is 3.3V at 40pin of IC301?
YES
4
Check Line between IC301 and IC501
is open or short, Another is change
IC301 or IC501.
NO
Is I2C waveform at
10,11pin of IC301?
Connect wire between P301 and speaker.
YES
5
Check Line between IC301 and IC501
is open or short, Another is change
IC301 or IC501.
NO
Is I2S waveform at
R301,R302,R303,R304?
6
Check Line between IC301 and P301
is open or short. And then check resistance
of speaker is under 4ohm.
Another is change IC301
NO
Is there any waveform P301?
YES
Change speaker and wire
4
5
10pin of IC301
R301(SDO)
11pin of IC301
R303(SCK)
6
5
R304(MCLK)
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
R302(WS)
- 19 -
1pin of P301(Audio out)
LGE Internal Use Only
8. Abnormal sound (TV)-Main PCBA
Abnormal sound (TV)
1
insult RF cable tight and then
Cable nut screw tight.
NO
Put into RF cable completely?
YES
2
Is 1.8V at 7pin of TU401?
If 1.7V is not at plus pin of TU401, check
It is over 3V at 2pin of IC401,
if it is not, Check Line between TU401
and IC401 is open or short.
Another is change IC401 or TU401
NO
3
Is I2C waveform
At 3,4pin of TU401?
NO
Check Line between TU401 and IC501
is open or short, Another is change
IC501 or TU401
4
Is IF waveform at 43
,44 pin of IC501?
NO
Check Line between TU401 and IC501
is open or short, Another is change
IC501 or TU401
Change Main PCBA
WAVEFORMS
3
4
3Pin of TU401 (SCL)
4Pin of TU401 (SDA)
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 20 -
43,44pin of IC501
LGE Internal Use Only
9. Abnormal sound (AV)-Main PCBA
Abnormal sound (AV)
1
NO
Put into AV cable completely?
Insult AV cable tight
YES
2
Is waveform at C520,C521
Check Line between JK101 and IC501
is open or short, Another is
change AV cable
NO
YES
Change IC501
WAVEFORMS
2
C520,C521(audio in)
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 21 -
LGE Internal Use Only
10. Abnormal sound (HDMI)-Main PCBA
Abnormal sound (HDMI)
1
NO
Put into HDMI
cable completely?
insulted HDMI cable
YES
2
Change Timing according to
product spec, change f ormat
under 8 bit in Ycbcr, Ypbpr, RGB
NO
Is Input signal timing
and format in spec?
YES
3
Check Line between JK204 and IC501
is open or short, Another is
Change HDMI cable
Can read EDID and
HDCP key though
16,15pin of JK204
YES
4
Check Line between JK204 and IC501
is open or short, Another is
Change IC501 or HDMI cable
Is 5V at 19pin of JK204?
YES
5
Is waveform at 10,12pin
of JK204?
Check Line between JK204 and IC501
is open or short, Another is
Change HDMI cable
NO
YES
6
Is waveform at 1,3,4,6,7,9pin
Of JK204?
Check Line between JK204 and IC501
is open or short, Another is
Change HDMI cable
NO
YES
Change IC501
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 22 -
LGE Internal Use Only
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 23 -
((
((
MP1584
MP1472
Q712
MP1472
To USB
To
OP_AMP
TPS40210
DT1641S
LPF
LPF
30
21
18
38
10 11
Sound AMP
33
NTP7513
9
8
Audio_SCL
Audio_SDA
I2S_MCLK
I2S_WS
I2S_SCK
I2S_SDO
Main_1.8V
7
1.8V REG
M_3.3V
Main_1.2V
40 35
32 19
31 20
S_AMP_19V
Q710
MP20051
IC503
EEPROM
24C64
IC502
Serial Flash
8Mbytes
BLU_24V
LED_28V
Q720 Panel_Vcc
AO3407A
P_ST 3.5V
Main_5V
+18V
P_12V
P Dim
EEP SCL
48
115
50
51
HDMI
SCL/SDA
113 112
9 116 107
41 30 18 100
77 62 54
EEP SDA
84
SPI_CLK
SPI_DI
SPI_CZ
SPI_DO
85
94
95
97
96
Inv. ON
102 105
XXX
LVDS
Output
22,20,24,
MST6841XP
XXX
KEY2
IR
Led_PWR
108 101
Led_PWR
27,35,36
IR/KEY
117 111 110
KEY1
CVBS In
Module
38
OP-AMP
x4 Gain
37
52
53
45
40
39
43
44
99
98
ST_3.5V
Audio L-Out
Module
BLU
22”/26”
Audio R-Out
Module
BLU
24”
YPbPr In
19V
AV/RGB L/R In
IF_AGC
Audio
Out
+18V
10
7
11
IF_N
1.8V REG
TU_1.8V
M_3.3V
TU_3.3V
B+
5
Tuner SDA
Tuner SCL
TUNER
4
3
9
24Mhz
USB_DN
USB_DP
USB_5V
IF_P
Adaptor
BLOCK DIAGRAM
LGE Internal Use Only
EXPLODED VIEW
IMPORTANT SAFETY NOTICE
A31
511
502
501
300
510
301
A2
200
801
800
122
900
LV1
540
910
401
120
402
400
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.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- 24 -
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF
A P C P C W M _4828539:W P _G LO B A L_P F W P _G LO B A L_P F
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
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