LG 32LW4500 User manual

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LED LCD TVLED LCD TV
SERVICE MANUALSERVICE MANUAL
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Internal Use OnlyInternal Use Only

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CONTENTSCONTENTS
CONTENTS CONTENTS
............................
............................
............................
............................
..........................
............................
......................
22
SAFETY PSAFETY P
RECAUTIONSRECAUTIONS
............................
............................
............................
..........................
............................
........
33
SPECIFICASPECIFICA
TIONTION
............................
............................
............................
............................
..........................
............................
........
66
ADJUSTMENT ADJUSTMENT
INSTRUCTIONINSTRUCTION
............................
............................
............................
............................
............
1010

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SAFETY PRECAUTIONSSAFETY PRECAUTIONS
Many elMany el
ectrical aectrical a
nd mechanind mechani
cal parts cal parts
in this in this
chassis chassis
have spehave spe
cial safcial saf
ety-related chaety-related cha
racteristics. racteristics.
These parts These parts
are identifiare identifi
ed by ed by
Schematic Diagram and Exploded View.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 preventIt 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.Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.Do not modify the original design without permission of manufacturer.
General GuidanceGeneral Guidance
AnAn
isolation Transformer should always be usedisolation Transformer should always be used
during theduring the
servicing of a receiver whose chassis is not isolated from the ACservicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as thispower line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injuryprotects the technician from accidents resulting in personal injury
from electrical shocks.from electrical shocks.
Leakage Current Hot CheckLeakage Current Hot Check
(See below Figure)(See below Figure)
Plug the AC cord directly into the Plug the AC cord directly into the
AC outlet.AC outlet.
Do not use a line Isolation Transformer during this check.Do not use a line Isolation Transformer during this check.
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitorConnect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.and the exposed metallic parts.
IMPORTANT SAFETY NOTICEIMPORTANT SAFETY NOTICE

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CAUTION: Before servicing receivers covered by this serviceCAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow themanual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONSSAFETY PRECAUTIONS
on page 3 of this on page 3 of this
publication.publication.
NOTE:NOTE:
If unforeseen circumstances create conflict between theIf unforeseen circumstances create conflict between the
following servicing precautions and any of following servicing precautions and any of
the safety precautions onthe safety precautions on
page 3 of this publication, always follow the safety precautions.page 3 of this publication, always follow the safety precautions.
Remember: Safety First.Remember: Safety First.
General Servicing PrecautionsGeneral Servicing Precautions
1. 1.
Always unplug the receiver AC power cord from the AC powerAlways unplug the receiver AC power cord from the AC power
source before;source before;
a. Removing or reinstalling any component, circuit boarda. Removing or reinstalling any component, circuit board
module or any other receiver assembly.module or any other receiver assembly.
b. b.
Disconnecting or reconnectiDisconnecting or reconnecti
ng any receiver electrical plug orng any receiver electrical plug or
other electrical connection.other electrical connection.
c.c.
Connecting a Connecting a
test substitest substi
tute in paralltute in parall
el with an eleel with an ele
ctrolyticctrolytic
capacitor in the receiver.capacitor in the receiver.
CAUTION:CAUTION:
A wrong part substitution or incorrect polarityA wrong part substitution or incorrect polarity
unit under test.unit under test.
2. After removing an electrical assembly equipped with ES2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such asdevices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup oraluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.exposure of the assembly.
3. 3.
Use only a grounded-tip solUse only a grounded-tip sol
dering iron to solder or unsoldering iron to solder or unsol
devices.devices.
4.4.
Use only Use only
an anti-static an anti-static
type solder type solder
removal device. removal device.
removal devices not classified as "anti-static" can generateremoval devices not classified as "anti-static" can generate
electrical charges sufficient to damage ES electrical charges sufficient to damage ES
devices.devices.
5. Do not use freon-propelled chemicals. These can generate5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES electrical charges sufficient to damage ES
devices.devices.
6. Do not remove a replacement ES device from its protective6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads(Most replacement ES devices are packaged with leads
electrically shorted together by conductive foam, aluminum foilelectrically shorted together by conductive foam, aluminum foil
or comparable conductive material).or comparable conductive material).
7. Immediately before removing the protective material from the7. Immediately before removing the protective material from the
SERVICING PRECAUTIONSSERVICING PRECAUTIONS

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IC Remove/ReplacementIC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) throughSome chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against thewhich the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following techniquecircuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working withshould be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard techniqueboards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and as outlined in paragraphs 5 and
6 above.6 above.
RemovalRemoval
1. 1.
Desolder and straighten eacDesolder and straighten eac
h IC lead in one operation by h IC lead in one operation by
gentlygently
prying up on the lead with the soldering iron tip as the solderprying 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-type2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing thesolder removal device (or with solder braid) before removing the
IC.IC.
ReplacementReplacement
1. 1.
Carefully insert the replaCarefully insert the repla
cement IC in the circuit cement IC in the circuit
board.board.
2. Carefully bend each IC lead against the circuit foil pad and2. Carefully bend each IC lead against the circuit foil pad and
solder it.solder it.
3. 3.
Clean the soldered areas wiClean the soldered areas wi
th a small wire-bristle brusth a small wire-bristle brus
h.h.
Circuit Board Foil RepairCircuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuitExcessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuitboard will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. Theboard causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed wheneverfollowing guidelines and procedures should be followed whenever
this condition is encountered.this condition is encountered.
At IC ConnectionsAt IC Connections
To repair a defective copper pattern at IC connections use theTo repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper patternfollowing procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on ICside of the circuit board. (Use this technique only on IC
connections).connections).
1. Carefully remove the damaged copper pattern with a sharp1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.used) from the end of the remaining copper pattern.
3. 3.
Bend a small "U" in one end of a small gaBend a small "U" in one end of a small ga
uge jumper wire anduge jumper wire and
carefully crimp it around the IC pin. carefully crimp it around the IC pin.
Solder the IC connection.Solder the IC connection.

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1. Application range
This spec sheet is applie
d LCD TV with
LJ01U chassis.
2. Requirement for Test
Each part is tested as below
without special appointment.
1)
Temperature: 25 ºC
±
5
ºC
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.
5) The receiver must be operated for about 5 minutes prior to
the adjustment.
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for
improvement.

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4. General
Specificati
on(TV)
N
o
I
t
e
m
S
p
e
c
i
f
i
c
a
t
i
o
n
R
e
m
a
r
k
1
R
e
c
e
i
v
a
b
l
e
S
y
s
t
e
m
1
)
A
T
S
C
/
N
T
S
C
-
M
2
A
v
a
i
l
a
b
l
e
C
h
a
n
n
e
l
1
)
V
H
F
:
0
2
~
1
3
2) UHF : 14 ~ 69
3) DTV : 07 ~ 69
4) CATV : 01 ~ 135
3
I
n
p
u
t
V
o
l
t
a
g
e
1
)
A
C
1
0
0
-
2
4
0
V
~ 5
0
/
6
0
H
z
4
M
a
r
k
e
t
C
e
n
t
r
a
l
a
n
d
S
o
u
t
h
A
M
E
R
I
C
A
5
S
c
r
e
e
n
S
i
z
e
2
6
i
n
c
h
W
i
d
e
(
1
3
6
6
x
7
6
8
)
2
6
L
K
3
3
0
32
inch
Wide
(1366
x
768)
32LV2500,
32LK330
32 inch Wide (1920 x 1080)
32LV4500, 32LV3500, 32LV3400, 32LK4
50, 32LK430,
37
inch
Wide
(1920
x
1080)
37LV3500,
37LK450
42 inch Wide (1920 x 1080)
42LV4500, 42LV3500, 42L
V3400, 42LK550,
47
inch
Wide
(1920
x
1080)
47LV3500,
47LK450,
47LW4500

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6. Component Video
Input
(Y
, C
B/
P
B
, C
R
/P
R
)
No Res
olution
H-freq(kHz)
V-freq.(kHz)
Pixel
clock
Proposed
1
.
7
2
0
*
5
7
6
1
5
.
6
2
5
5
0
.
0
0
0
1
3
.
5
S
D
T
V
5
7
6
I
2.
720*480
15.73
60
13.5135
SDTV
,DVD
480I
3.
720*480
15.73
59.94
13.5
SDTV
,DVD
480I
4.
720*480
31.50
60
27.027
SDTV
480P
5.
720*480
31.47
59.94
27.0
SDTV
480P
6
.
7
2
0
*
5
7
6
3
1
.
2
5
0
5
0
.
0
0
0
2
7
.
0
0
0
S
D
T
V
5
7
6
P
7.
1280*720
37.500
50.000
74.25
HDTV
720P
8.
1280*720
45.00
60.00
74.25
HDTV
720P
9
.
1
2
8
0
*
7
2
0
4
4
.
9
6
5
9
.
9
4
7
4
.
1
7
6
H
D
T
V
7
2
0
P
10.
1920*1080
28.125
50.00
74.250
HDTV
1080I
11.
1920*1080
33.75
60.00
74.25
HDTV
1080I
12.
1920*1080
33.72
59.94
74.176
HDTV
1080I

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8. HDMI input (PC/DTV)
No
Resolution
H-freq(kHz)
V-freq.(kHz)
Pixel
clock
Proposed
P
C
D
1.
640*350
31.468
70.09
25.17
EGA
2.
720*400
31.469
70.08
28.32
DOS
3.
640*480
31.469
59.94
25.17
VESA(VGA)
4.
80
0*
60
0
37
.8
79
60
.3
1
40
.0
0
VE
SA
(S
VG
A)
5.
1024*768
48.363
60.00
65.00
VESA(XGA)
6.
1
36
0*
76
8
47
.
71
2
6
0.
01
5
8
5.
50
VE
SA
(W
X
GA
7
.
1
2
8
0
*
1
0
2
4
6
3
.
9
8
1
6
0
.
0
2
0
1
0
8
.
0
0
V
E
S
A
(
S
X
G
A
8
.
1
9
2
0
*
1
0
8
0
6
7
.
5
0
0
6
0
.
0
0
0
1
4
8
.
5
0
H
D
T
V
1
0
8
0
P
DTV
1
7
2
0
*
4
8
0
3
1
.
4
6
9
5
9
.
9
4
0
2
7
.
0
0
0
S
D
T
V
4
8
0
P
2
720*480
31.500
60
27.027
SDTV
480P

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ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LCD TV with
LJ01U/LJ01T/L
J01S
chassis.
2. Designation
1) The adjustment is according to the order which is designated
and which must be followed, according to the plan which can
be changed only on agreeing.
2) Power Adjustment: Free Voltage
3) Magnetic Field Condition: Nil.
4) Input signal Unit: Product Specification Standard
5) Reserve after operation: Above 5 Minutes (Heat Run)
Temperature : at
25 ºC ±
5 ºC
Relative humidity
: 65 % ±
10 %
Input voltage : 100 ~ 220 V~, 50/60 Hz
6) Adjustment equipments: Color Analyzer(CA-210 or CA-110),
5) Click “Auto” tab and set as below
6) Click “Run”.
7) After downloading, check “OK” message.
 filexxx.bin
(4)
(2)
Please Check the Speed :
To use speed between
fro
m 20
0KH
z
to 40
0KH