LG 55LV9500 (CHASSIS:LA12D) Service Manual ▷ View online
- 5 -
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.
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
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.
melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing the
IC.
IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
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
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
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.
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
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.
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
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.
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.
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
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.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
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.
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).
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.
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.
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.
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.
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.
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.
- 6 -
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range
This spec sheet is applied LCD TV with LA12D chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
1) Temperature: 20 ºC ± 5 ºC, CST: 40°C ± 5 °C
2) Relative Humidity: 65 % ± 10 %
3) Power Voltage : Standard input voltage(100-240V~, 50/60Hz)
2) Relative Humidity: 65 % ± 10 %
3) Power Voltage : Standard input voltage(100-240V~, 50/60Hz)
* 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 BOM.
accordance with BOM.
5) The receiver must be operated for about 20 minutes prior to
the adjustment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
2) Demanded other specification
- Safety : UL, CSA, IEC specification
- EMC : FCC, ICES, IEC specification
- Wireless : WirelessHD Specification (Option)
- EMC : FCC, ICES, IEC specification
- Wireless : WirelessHD Specification (Option)
4. General Specification(TV)
No
Item
Specification
Remark
1
Receivable System
1) ATSC / NTSC-M
2
Available Channel
1) VHF : 02 ~ 13
2) UHF : 14 ~ 69
3) DTV : 02 ~ 69
4) CATV : 01 ~ 135
5) CADTV : 01 ~ 135
3
Input Voltage
1) AC 100 - 240V~ 50/60Hz
Mark : 110V, 60Hz (N.Ame
4
Market
5
Screen Size
55 inch Wide(1920x1080)
FHD + 240Hz
55LV9500-NA
6
Aspect Ratio
16:9
7
Tuning System
FS
8
LCD Module
LC550DUT-SDA1 (CCLL)
LGD
55LW9500-UA
55” ALEF LED (BLU)
LG Innotek
9
Operating Environment
Temp : 0 ~ 40 deg
Humidity : ~ 80 %
10
Storage Environment
Temp : -20 ~ 60 deg
Humidity : -85 %
- 7 -
5. Chrominance & Luminance
No
Item
M in
Typ
Max
Unit
Result
Remark
2D
360
450
cd/m
42LW7500-NB, 42LW7700-NA
2D
30
40
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
cd/m
2
47LW7500-NB,
47LW7700-UA/NA
47LW7700-UA/NA
2D
360
450
55LW7500-NB,
55LW7700-UA/NA
55LW7700-UA/NA
3D
30
40
42LW7500-NB, 42LW7700-NA
3D
360
450
47LW7500-NB,
47LW7700-UA/NA
47LW7700-UA/NA
3D
30
40
55LW7500-NB,
55LW7700-UA/NA
55LW7700-UA/NA
2D 330 360
47LW9500-NA/UA
47LW9600-NA
47LW9600-NA
2D 330 360
55LW9500-NA/UA, 55LV9500-UA
55LW9500-NA/UA, 55LV9500-UA
55LW9600-NA
2D 360 450
60LW9500-NA/UA
3D 30
40
47LW9500-NA/UA
47LW9600-NA
47LW9600-NA
3D 30
40
55LW9500-NA/UA
55LW9600-NA
55LW9600-NA
1
Max Luminanc e
(Center 1-point / Full White
Pattern)
3D 60
80
60LW9500-NA/UA
X
0.642
RED
Y
0.335
X
0.308
GREEN
Y
0.602
X
0.156
BLUE
Y
0.061
X
0.279
Color coordinate
(42")
(42")
WHITE
Y
Typ.
-0.03
0.292
Typ.
+0.03
42LW7500-NB, 42LW7700-NA
X
0.642
RED
Y
0.333
X
0.307
GREEN
Y
0.605
X
0.149
BLUE
Y
0.058
2
Color coordinate
(47")
(47")
WHITE
X
Typ.
-0.03
0.279
Typ.
+0.03
47LW7500-NB,
47LW7700-UA/NA
47LW7700-UA/NA
Y
0.292
X
0.644
RED
Y
0.333
X
0.308
GREEN
Y
0.605
X
0.149
BLUE
Y
0.059
X
0.279
Color coordinate
(55")
(55")
WHITE
Y
Typ.
-0.03
0.292
Typ.
+0.03
55LW7500-NB,
55LW7700-UA/NA
55LW7700-UA/NA
X
0.640
RED
Y
0.330
X
0.300
GREEN
Y
0.600
X
0.150
BLUE
Y
0.060
X
0.280
Color coordinate
(47" ALEF)
(47" ALEF)
WHITE
Y
Typ.
-0.05
0.290
Typ.
+0.05
47LW9500-NA/UA
47LW9600-NA
X
0.640
RED
Y
0.330
X
0.300
GREEN
Y
0.600
X
0.150
BLUE
Y
0.060
X
0.280
Color coordinate
(55" ALEF)
(55" ALEF)
WHITE
Y
Typ.
-0.05
0.290
Typ.
+0.05
55LW9600-NA
(V6 & V5
(V6 & V5
동일
)
- 8 -
55LW9500-NA/UA, 55LV9500-UA
55LW9500-NA/UA, 55LV9500-UA
cd/m2
X
0.640
RED
Y
0.330
X
0.300
GREEN
Y
0.600
X
0.150
BLUE
Y
0.60
X
0.283
Color coordinate
(60" IOP)
(60" IOP)
WHITE
Y
Typ.
-0.03
0.284
Typ.
+0.03
60LW9500-NA/UA
3 Contrast
ratio
800 1200
Local Dimming OFF
(except LW7500)
900
1300
LW7500 only
2.5 %
47L W 9500-NA /UA
47L W 9600-NA
47L W 9600-NA
1.8 %
(V 6)
55L W 9600-NA
55L W 9600-NA
4.0 %
(V 5) 55L W 9500-NA
0.8
1.0 %
60L W 9600-N A /60L W 9500-UA
4
3D Crosstalk
3
%
5 Luminance Uniformity (2D Only)
75
%
Response
Time(Gray to Gray)
72 ms
Response
Time(MPRT)
4
8 ms
Response
Time(Uniformity
δ
MPRT)
8
12
6
Response
Time(Uniformity
δ
G to G)
1
2,400,000 3,000,000
47LW9500-NA/UA
47LW9600-NA
47LW9600-NA
2,400,000 3,000,000
55LW9600-NA
8,000,000 10,000,000
60LW9600-NA,
60LW9500-NA
2,400,000 3,000,000
42/47/55LW7500-NB
2,400,000 3,000,000
47/55LW7700-UA
42/47/55LW7700-NA
42/47/55LW7700-NA
7
Dynamic CR
2,400,000 3,000,000
Cool
0.267
0.271
0.271
0.269
0.273
0.273
0.271
0.275
0.275
13000K
Medium
0.283
0.291
0.291
0.285
0.293
0.293
0.287
0.295
0.295
9300K
8 Color
Temperature
Warm
0.311
0.327
0.327
0.313
0.329
0.329
0.315
0.331
0.331
6500K
** The W/B Tolerance is – 0.015
for picture quality by DQA.
** In the case of LED Model,
Measure the color temperature at
the warm mode after heat run T.V
more than 60 minutes at Cinema
mode.
for picture quality by DQA.
** In the case of LED Model,
Measure the color temperature at
the warm mode after heat run T.V
more than 60 minutes at Cinema
mode.
LED모델의 경우 Warm 측정시
Cinema에서 60분 이상
HR후 측정)
Cinema에서 60분 이상
HR후 측정)
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