LG 55LB6500 User manual

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LED TV
SERVICE
MANUAL
CHASSIS LA42B
MODEL
55L
6500
CAUTION
BEFORE SERVICING THE
CHASSIS
READ THE SAFETY PRECAUTIONS IN THIS MANUAL
PNO
MFL6804520211401RFV00
Confidential Business Information
Subject
to Protective
Order
Printed in
Korea
LGE910IT000143504
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CONTENTS
CONTENTS
2
PRODUCT SAFETY
3
SPECIFICATION 4
ADJUSTMENT
INSTRUCTION 13
EXPLODED VIEW 24
SCHEMATIC CIRCUIT DIAGRAM
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Electronics Inc All
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2
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SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many
electrical and mechanical
parts
in this chassis have
special safetyrelated
characteristics These
parts are
identified
by
b 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 its
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
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
CheckAntenna
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 ohmmeter 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 MO and 52 MO
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 15 K 10 watt resistor in
parallel
with a 015 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 ohmsvolt
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 075 volt RMS which is
corresponds
to
05 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
AC Voltmeter
To Instruments
exposed
METALLIC PARTS
Good Earth Grcund
such
as
WATER
PIPE
CONDUIT etc
When 25A is
impressed
between Earth and 2nd Ground
for
1 second Resistance must
be less than
01 0
xBase on
Adjustment standard
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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
einstallatioxn
of
elpectrolyticlcaopacitorssmay riesuolt
in
ann
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 cottontipped
stick or
comparable
nonabrasive
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
plugsocket
B
voltage
interlocks with which
receivers covered by this service manual
might
be equipped
6 Do not apply AC
power
to this instrument andlor
any
of its
electrical assemblies unless all solidstate 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
solidstate
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
fieldeffect 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
semiconductorequipped assembly
drain off
any
electrostatic
cAharge olntyouer bodyrbyntouchinag
a
ktnowinvearthegroundly
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
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
groundedtip soldering iron to solder or
unsolder
ES
devices
4 Use
only an
antistatic
type
solder removal device
Some
solder
removal devices not classified as antistatic can
generate
electrical
charges
sufficient to
damage
ES devices
5
Do
not use
freonpropelled 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
Meost relplaceementcES detvicesrareipacckagedawith leladsly
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
Mriniemize bpodily lmoations cwhenehandlinmg unpackaeged nt
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
groundedtip lowwattage 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 resincore solder composed
of 60
parts
tin40
parts
lead
3
Keep
the
soldering iron tip
clean and well tinned
4
Twhoroughly icleran thee surfacbes
to
bersoldieresd Useta mlalle
05 inch
or 125
cm
brush with a metal handle
Do
not use
freonpropelled sprayon 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
csQuicklyudrawcthe mteltiedosoldernwith atn ayntistatipc e
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 wirebristle brush
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Electronics Inc All
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and service
purposes
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IC
RemoveReplacement
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
antistatic
suctiontype
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 wirebristle brush
It
is not
necessary
to
reapply acrylic coating
to the
areas
SmallSignal
Discrete Transistor
RemovalReplacement
1 Remove the defective transistor
by clipping
its leads
as
close
as
possible to
the
component body
2 Bend into
aU
shape
the end of each of three leads
remaining
on
the circuit board
3 Bend into aU
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
RemovalReplacement
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 RemovalReplacement
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
Fuse and Conventional Resistor
RemovalReplacement
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
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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 liftoffthe board The
following guidelines
and
procedures should
be followed whenever
this condition is encountered
At
C
Connections
To
repair
a defective
copper
pattern at
IC connections use the
following procedure
to install a
jumper
wire on the
copper
pattern
scide ofothe cirncuit bonard Uese thics techntiqueioonly onnIC s
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
outaway
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
Connect insulated 20gauge
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
5
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SPECIFICATION
NOTE
Specifications
and others are subject to
change
without notice for
improvement
1
Application
range
1
This
spec
sheet is
applied
all of the
32 42 47 50 55
GO 65
70
LED TV
with LA42AtB chassis
2Not
included
spec and each product spec
in this
spec
sheet
apply correspondingly
to the
following
each
country
standard and
requirement
of
Buyer
2
Test condition
Each
part
is tested
as below
without
special
notice
1Temperature 20
C5C
2
Relative
Humidity
65 10
3Power
Voltage
Ma rket Input voltage Frequency Remark
USA 110240V 5060Hz
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
5The receiver must be
operated
for about 20 minutes
prior
to
the
adjustment
3 Test method
1Performance LGE TV test method followed
2
Demanded
other specification
Safety UL CSA CE
IEC
specification
EMC
FCC ICES CE
IEC
specification
Wireless Wireless
HD
Specification
Option
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4 General
Specification
Na Item Specification Remark
1
Receiving System
ATSC NTSCM 64 CAM 256 CAM
2 Available Channel
1
VHF 0213
2
UHF 1469
3
DTV 0269
4
CATV 01135
5
CADTV 01135
3
Input Voltage
1AC 100
240V
5060Hz AC
120V
5060Hz
on
the label
USA
4
Input Voltage
AC 220 240V 60H
5
Aspect
Ratio 169
?
6 Tuning
System
FS
7
LCD Module LC550DUHPGF1 FHD 55OINCH LGD LC550DUHPGF1 55LB7200UB
1920X1080 450CD COLOR 72 169
13001 120Hz Inverter NLED 3DFPR
WO
Tcon 724W 8bit 10000K
178178
8ms LG
Display Co
Ltd
LC55OEUHLGF1 FHD 55OINCH LGD 55LB8700UA
1920X1080 450CD COLOR 72 169
13001 120Hz Inverter NLED 3DFPR
681W
8Bit 10000K 178178 8ms
LG
Display
Co Ltd
HC700CUFVHHDI FHD 70INCH
Sharp
HC700CUFVHHDI 70LB7100UC
1920X1080 4000D COLOR 72 169 HC700CUFVHHD2
50001 120HzTBD HEESUNG
ELECTRONICS
LTD
LC600DUFFGF1 FHD 60INCH LGD LC600DUFFGF1 60LB71 00UT
1920X1080 450CD COLOR 68 169
16001
240HzT
Inverter NLED 3DFPR
VVITcon 832W 813lt 10000k 178178
6msGTGHSPJDark Titan
LG
Display
Co
Ltd
LC420DUHFGP1 FHD 42OINCH LGD LC420DUHFGP1 142LB6500UM
1920X1080 300CD COLOR 68 169
16001 120Hz Inverter NLED 3DFPR
WOTcon
41 Vv 8Bit 10000k 1781178
6msGTGnOTS
LG
Display Co
Ltd
T420HVJ010 FHD 421NCH 1920X1080 AUO T420HVJ011 42LB6500UM
300CD
COLOR 72 169 30001
TBD AU OPTRONICS CORP
LC470DUHFGPI
FHD 471NCH LGD LC470DUHFGPI 47LB6500UM
1920X1080 300CD COLOR 68 169
16001 120Hz Inverter NLED 3DFPR
WOTcon
508W8Bit 10000k 1781178
6msGTGnOTS
LG
Display Co
Ltd
LC550DUHFGA2 FHD 55OINCH LGD LC550DUHFGA2 55LB6300UO
1920X1080 300CD COLOR 68 169
16001 120Hz Inverter NLED 2D
W OTcon 642VV Bait 10000k 178178
6msGTGHSLight Silver
LG
Display
Co
Ltd
Copyright
n 2014 LG Electronics Inc All
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No Item
Specification
Remark
LC550DUHFGP1 FHD 55OINCH LGD LC550DUHFGP1 55LB6500UM
1920X1080 330CD COLOR 68 169
16001 120Hz Inverter NLED 3DFPR
WOTcon
642V18Bit 10000k 178178
6msGTGHS LG Display
Co
Ltd
LC650DUFFGF1 FHD 651NCH LGD LC650DUFFGF1 65LB7100UC 65LB7100UB
1920X1080
450CD
COLOR 68
169
16001
240HzT
Inverter N LED 3DFPR
WTcon 1172W 813it 10000k 178178
6msGTGHSPJDark Titan
LG
Display
Co
Ltd
10
Operating Environ1 Temp
0 w 40 deg
ment 2
Itumidity
80
11
Storage Environ1 Temp
20 60 deg
meat 2
Humidity
85
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Electronics Inc All
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5
Supported
video resolutions
51
Component
2D
inputY CBPB CRPR
No Resolution
HfreqkHz VfreqkHz
Pixel clock
Proposed
720480 1573
60 135135
SDTVDVD 4801
2
720480
15735994135 SDTVDVD
4801
3 720480 3150 60 27027 SDTV 480P
4
720480 3147 5994 270 SDTV
480P
5
1280720 4500 6000 7425 HDTV
720P
6 1280720 4496 5994 74176 HDTV 720P
7 19201080 3375 6000 7425 HDTV 10801
8
19201060 3372 5994 74176 HDTV 10801
9
19201080 6750
60 14850
HDTV
1080P
10 19201080
67432 5994 148352 HDTV 1080P
502
Component
3D
inputY
CBPB
CRPR
No Resolution
HfreqkHz VfreqkHz
Pixel clock 3D
input proposed
mode
Proposed
21280720
1280720 445040 96
65000 997425 4
74176
2D to
3DSide
by
Side
Top and Bottom
2D
to
3DSide by Side Top and Bottom
720P
HDTV
720P
3
19201060 3375 6000 7425 2D
to
3DSide by Side Top and Bottom
HDTV 10801
4 19201080 3372 5994 74176 2D to
3DSide by Side Top and Bottom
HDTV 10801
53 HDMI
Input
PCDTV
No Resolution HfreqkHz VfreqHz Pixel clockMHz Proposed
PC
1
640350 31468 7009 2517 EGA X
32
720400
640480
31469
31469
7008
5994
2832
2517
DOS 0
VESAVGA 0
4800600 37879 6031
4000
VESASVGA
0
5
6
1024768
1152864
48363
54345
6000
60053
6500
80002
VESAXGA
0
VESA 0
7 1360768 47712 60015 8550 VESA
WXGA
X
8
12801024
63981 60020 10800
VESASXGA
0
9
19201080 675
60 1485
HDTV
1080P
0
1DTV
720480
3150 60 27027 SDTV 480P
2720480 31469
5994 2700 SDTV
480P
3
4
1280720
1280720
4500
4496
6000
5994
7425
74176
HDTV
720P
HDTV
720P
5 19201080 3375 6000 7425 HDTV 10801
6
19201080 3372 5994 74176 HDTV 10801
7
19201080 67500 60 14850 HDTV
1080P
8
9
19201080
19201080
6743
27000
5994
24000
148352
7425
HDTV
1080P
HDTV 1080P
10 19201080 2697 2397 74176 HDTV 1080P
11
12
19201080
19201080
3375
33716
30000
29976
7425
74176
HHDTV 10D80P TV
1080P
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9
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54 313 HDMI
Input14b
No Resolution
HfreqkHz VfreqHz
Pixel
clockMHz
3D
input proposed
mode
1
720?480p 63
5994605400FPLA315
2700
TBSSSS
Full
2
1280720p 9000
599460 1485
FP LA
4496 45 74177425
SS TB
SS Full
3
19201080i 67432 675 5994 60 148351485
FP
FA
3375 7425
SS
TB SS Full
4
19201080p 54
2397624 1485
FP LA
26973 27 23976 24 741757425
SiS TB
SS Full
5
19201080p
33716 3375 2997 3000 741757425
SS TB
SS Full
6750 3000 1485
FP LA
6000 SS
TB
55
3D HDMIPC
Input
No Resolution
HfreqkHz VfreqHz
Pixel
clockMHz
3D
input proposed
mode
1024766 48363 60004 65000
2D to
3D SS TB
2
3
1360768
19201060
47712
6750
60015
6000
85500
14850 D
to
3D SS TB
CB
Rl
Cl
56 HDMI
Input13
No
1
Resolution
HfreqkHz VfreqHz
Pixel
clockMHz
720480p 63 5994 60 5400
315 2700
3D
input proposed
mode
2D
to 3D SS TB CB R11 Ci
2 1 280 7
20p
9000 5994 60
1465
4496
45 74177425
3 19201080i
674321675 5994
60 148351485 2D to
3D SS TB
3375 7425
4
19201080p 54
23976 24 1485 2D to
3D SS TB CB RI
Cil
26973 27 23976 24 741757425
5
19201080p
33716 3375 2997 3000 741757425
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57 USBDLNA
Input
571 3D Auto detection
No Resolution
HfreqkHz VfreqkHz
Pixel
clocktAHz
3D
input proposed
mode
Proposed
1 19201060 3375 30000 7425
Sidebyside TapandBottom
HDTV 1060P
Checkerboard
Row
Interleaving
Column
Interleaving
Frame
Sequentia
Photo Sidebyside
TopandBottom
572 3D
ManualMovie
No
Resolution HfreqkHz VfreqkHz 3D
input proposed
mode
1
Under 704480 2D to 3D
2 Over 704‘480i 2D to
3DSidebyside
TopandBottom
3 Over
704480p 5060
2D to
3DSidebyside
TopandBottom
Checkerboard
Row
Interleaving
Column
Interleaving
Frame
Sequential
4 Over
704480p
Others 2D to
3DSidebyside
TopandBottom
Checkerboard
Row
Interleaving
Column
Interleaving
573
3D
ManualPhoto
No Resolution
HfreqkHzl VfreqkHz
3D
input proposed
mode
1 Under 320‘240
2 Over 320240
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21 to 3D
20 to
3DSidebyside
TopandBottom
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58 Miracastf idi
Input
581 3D Manual
No Resolution
HfreqkHz VfreqkHz
3D
input proposed
mode
1
1024768p
30160 2D to
3DSide?byside
2
1280720p
TopandBottom
3
19201080p
4
Others 2D
to 3D
582
RF 3D
InputDTV
No Resolution
HfreqkHz VfreqHz
Pixel
clockMHz Proposed
3D
input proposed
mode
1 1280720 45000 60 7425 HDTV 720P 2D to
3D
Side by Side
Top
Bottom
2 19201080 3375 60 7425 HDTV 10801 2D to 3D Side by Side
Top
Bottom
59 2D to 3D
ConversionRF
3D
InputDTV
No INPUT
Freq
Digital
TV
Analog
TV 2D
Support freq
Resolution
2D
Support
resolution
2 HDMI 2D
Support freq
2D
Support
resolution
3
Component
2D
Support freq
2D
Support
resolution
4
5
Composite
2D
Support freq
US
B 2 D
Support freq
2D
Support
resolution
2D
Support
resolution
No Side by Side
Top
Bottom Checkerboard
Single
Frame Frame
Packing
2D to 3D
Sequential
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ADJUST ENT
INSTRUCTION
1
Application
This spec sheet
applies to
LA42B
Chassis
applied
LED 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 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 100240V
5060Hz
5
At first Worker must turn on the
SET
by using
Power
Only
key
6
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
X
Caution
When
still
image
is
displayed
for
a period
of 20 minutes
or
longer especially
where
WB
scale is
strong
Digital pattern
13ch andor Cross hatch
pattern 09ch
there
can
some
afterimage
in the black level area
3
Adjustment
items
31 Main
PCBA
Adjustments
1
ADC
adjustment
ADC
adjustment
is OTP
Auto
ADC
2
EDID download HDMI
32 Final
assembly adjustment
1
White Balance
adjustment
2
RS232C
functionality
check
3 Factory Option setting per
destination
4 Shipment
mode
setting InStop
5
GND and HIPOT test
33
Appendix
1Tool option menu
USB Download
SVV Update Option
and
Service
only
2
Manual
adjustment
forADC
calibration and White balance
3 Shipment conditions
Channel
preset
4 MAIN
PCBA
Adjustments
41
ADC
Calibration
An ADC calibration is not
necessary
because
MAIN SoC
LGExxxx
is
already
calibrated from IC Maker
if it needs to
adjust manually
refer to
appendix
42 MAC
Address
ESN
Key
and Widevine
Key download
421
Equipment
Condition
1 Play
file
keydownloadexe
422 Communication Port connection
1Key
Write Com
1234
and 115200
Baudrate
2Barcode
Com 1234 and 9600 Baudrate
423 Download process
1
Select the download items
2
Mode
check Online
Only
3
Check the test
process
US
Canada models
DETECT MAC WRITE
WIDEVINE WRITE
Korea Mexico models
DETECT MACWRITE
WIDEVINE WRITE
4 Play
START
5
Check of result
Ready Test
OK or NG
424
Communication
Port connection
1
Connect PCBA
Jig
RS232C Port PC RS232C
Port
425 Download
1 US
Canada
models
14Y
LCD TV MAC
Widevine
ESN
Key
DTCP
Key
HDCP14 and
HDCP20
2
426
Inspection
In
INSTART
menu check these
keys
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43
LAN
port Inspection Ping Test
431
Equipment setting
1 Play the
LAN Port Test PROGRAM
2 Input
IP set
up
for an
inspection to
Test
Program
IP number 121222
lr
JET AN Rw K3
Pi
SET PC
432 LAN PORT
inspection PING TEST
1 Play the
LAN
Port Test Program
2Connect each
other
LAN
Port
Jack
3 Play Test F9
button and confirm OK
Message
4
Remove LAN CABLE
RunFB
Step 1Step 3
Check
OK
Signal
44 EDID Download
441 Overview
It is aVESA
regulation
A PC or a MNT will
display
an
optimal resolution through
information
sharing without any
necessity
of
user
input
It is
a
realization of
Plug
and
Play
442
Equipment
Since
embedded EDID
data is
used EDID
download
JIG
HDMI cable and Dsub cable are not need
Adjust
remocon
443 EDID DATA
4431
2D8bitPCPv1US xvYCC
off
HDMI EDID
2D8bitPCMUSxvYCC
off
FF FFF FF FF 00 1E
80 AO 5 78 OA EE
08 00 40 45 40
A
1E 66 2 50
00 1E
00
05
AO 50 00 00 V It 0I
8 1 C 16 58 2 25 DO 40 84 6 00 00
OE 01 D CO DO 1E 20 GE 20 51 00 40 4 6
OE 00 E 5C OA DO EA 20 EO 2D 10 10 3E 96 00 0
0 0 CO0 00 00 00 00 00 00 00 00 00 00 00
10 O O CO 00 00 00 00 00 00 00 00 00 00 of
Reference
HDMI1 HDM13
In the data of EDID bellows
may
be different
by SMor Input
mode
Product ID
HE0X 0ED0ID Tabl1e
0100
0001 0100
DDC Function
Analog
Serial No Controlled on
production
line
Month
Year
Controlled on
production
line
ex Monthly
01 01
Year 2014 18
O
Model
NameHex
LGTV
Chassis
LA42B
Digital
MODEL NAMEHEX
00
00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
e ChecksurnLG
TV Changeable by
total EDID data
e1 2 3
HDMI1 E7
49 X
HDM12 E7
39
X
HDMI3
E7
29 X
Of Vendor
SpecificHDMI
INPUT
MODEL
HDMNIAME1HEX
67 030C00 10 00 80 1E
HDM12 67030000 20 00 80 1F
HDM13
67 030C00 30 00 80 1E
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4432 2D
10bitPCMUS
xvYCC off
HDMI EDID 2D
14bit
PCMUSxvYCC
of
FF FF
01 AO 5A OA EE
50 54 00 31 45 40 61
01 01 01 01 01 02 3A 00 18 71
00 AO 5A 00 00 00 66 21 50
70 36 00 A0 3A 00 00 00 1E 00 00 00 FL 00 3A
3E 1E
04 03 57
E3 05 UO 3A 80
10 58 2C 04 05 AO 5A 00 E 01
18 2C 25 00 AO 5A 00 00
1P 72 co 1E 20 6E 28 55 00 AO A00
00 1E OA DO EO 2D 0 3E 96 00 AO
hA UU UO 18 3ti AU Ski 40 30 2u 2h
00 AO 11 00 00 00 lA 00 00 00 00 00 00 00 00
Reference
HDM11 HDM13
In the data of EDID bellows
may
be different
by
SM1
or Input
mode
i Product ID
HEX
EDID
Table DDC Function
0001
0401
0100
0100
Analog
Digital
Serial No Controlled on
production
line
Month Year Controlled on
production
line
ex Monthly
01 01
Year 2014 18
Model
NameHex
LGTV
Chassis
MODEL NAMEHEX
LA42B 00 00 00 FC 00 4C 47 20 54 56 4A 20 20 20 20 20 20 20
P
ChecksumLG
TV Changeable by
total
EDID
data
P1 2
P13
HDMI1 E7
02 X
HDMI2 E7
F2 X
EfHDMI3
7
XEl2
Vendor SpecificHDMI
INPUT
MODEL NAMEHEX
HDM11
HDMl2
670300001000 B8 2D
67030C002000B820
HDN113 67 03000030008821
4433
3D8bitPCMUS
xvYCC off
HDMI EDID
3D8bitPCMUSxvYCC
off
01
50 54
rr rr
Al 02
L IE
78 OA
40 45
FF FF
AO 5A
00 1
EE
40 61 8 80
01 0 0 0 01 01 02 A s0 8 71 0 56 21
5 00 0 84 63 00 00 E 66 21 50 0 1B 30
40 70 00 4C 4 5 00 00 E
3E 1E 10 OC 20 20
F F1
1E
18 71 C 16 25 40 00
3E 0 1D DC 72 51 DO 1E 20 6E 55 40
8
00 00 1E OC 00 00 00 00 00 00 00 00 00 00
00 00 00 00 OC 00 00 00 00 00 00 00 00 00
Reference
HDMI1 HDM14
In the data of EDID bellows
may
he different
by
SNV
or Input
mode
Product ID
HEX
EDID
Tabie
0001 0100
i
0001
0100
DDC Function
Analog
Digital
Serial
No Controlled on
production
line
c Month Year Controlled on
production
line
ex Monthly
01 01
Year 2014 18
dModel
NameHex
LGTV
Chassis
LA42B
MODEL NAMEHEX
00 00 00 FC 00 4C 47 20 54 56 OA 20 20 20 20 20 20 20
P
CliecksunnLG TV Changeable by
total EDID data
i1
Ce2 3
HDMI1 E7 FC
X
DMI2 E7 EC X
HDIsl113 E7 DC X
HDMI4
E7CCX
LB87 only
Vendor
SpecificHDMI
INPUT
MODEL NAMEHEX
HDM12
78 03 0000 24 04 84 1E 20 CO 0E 01 4F 00
FE 08100610181028 103810
HDMI1 78030C00 10 00 80 1E2000 OE01 4F 00
FE 08100610181028 103810
HDM13
78 03 4000 30 00 80 1E 20 CO
4E
01 4F 00
FE
08 10 06 10 18 10 28 10 38 10
HDM14
78 03 4000 30 00 80 1E 20 CO OE 01 4F 00
LB87
Only
FE
08 10 06 10 18 10 28 10 38 10
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4434 3D
10bitPCMUS
xvYCC off
HDMI EDID 3D
10bit
PCMUSxvYCC
of
F EE EE EE EE
40 A 78 DA EE
54 08 0 40 45 80
01 C2 34 80
00 40 CO Co 1E 66 21
0x02 Cfl
E3 05 00 00 02 34
0x05 80 18 71 3E 22 40 E8 2045 00 40 84 63 00 00 1E
013 01 1D 80 10 71 10 15 20 58 2C 25 00 40 84 53 00
0 5 00 OE 01 15 00 72 51 D0 1E 20 6E 28 55 00 40 64
008 03 00 60 1E 00 50 CO 00 00 00 00 00 00 00 00 00
0x07 00 00 00 00 00 00 co 00 00 00 00 00 00 00 00 fFJ2
Reference
HDM11 HDM13
In the data of EDID bellows
may
be different
by
SM1
or Input
mode
ai
Product ID
HEX
EDID
Table DDC Function
0001
0001
010O
0100
Analog
Digital
Serial No Controlled on
production
line
Month Year Controlled on
production
line
ex Monthly
01 01
Year 2014 18
Model
NameHex
LGTV
Chassis
MODEL NAMEHEX
LA42B 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
e
ChecksumLG
TV Changeable by
total
EDID
data
P
1 02 3
HDMI1 E7 B5
X
HDM12 E7 A5
X
HDMI3 E7 95
X
Vendor
SpecificHDMI
INPUT
MODEL NAMEHEX
HDMI1 78030C001000B82D20CO OE 01 4F 00 FE
08 10 06 10 18 10 28 10 38 10
HDM12 78030C002000682D20COOE01 4F 00 FE
08 10 06 10 18 10 28 10 38 10
HDMI3 78030C003000B82D20CO
OE 01 4F 00 FE
08 10 06 10 18 10 28 10 38 10
5 Find
Assembly Adjustment
51 White Balance
Adjustment
511 Overview
5111
WB
adj Objective
Howitworks
1 Objective
To reduce each Panels tAB deviation
2
Howitworks
When RIGB
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
RIGB
is fixed at
192
and the other two is lowered to find
the desired value
3 Adj
condition normal temperature
Surrounding Temperature
25 5C
Warmup
time About 5 Min
Surrounding Humidity
20 io 80
Before White balance
adjustment
Keep
power on status
dont
power
off
5112
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
Probe location Color
Analyzer CA210 probe
should be
within
10cm
and
perpendicular
of the module surface
80 100
3 Aging
time
After
Aging Start
Keep the
Power
ON status during 5
Minutes
In case of
LCD Backlight
on should be checked
using
no
signal or
Fullwhite
pattern
513
Equipment
1
Color
Analyzer
CA210
NCG CH 9
WCG
CH12 LED
CH14
2 Adj Computer During
auto
adj
RS232C
protocol
is
needed
3 Adjust
Remocon
4
Video
Signal Generator
MSPG925F
720p204Gray
Model 217 Pattern
49
Color
Analyzer
Matrix should be calibrated
using
CS1000
513
Equipment
connection
x
z
QUI
pE r 001
F412IC111 i51 401J
1W i1C0t10d
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514
Adjustment
Command
Protocol
1
RS232C Command used
during autoadj
RS232C COMMAND
CMD DATA
ID
Explanation
Wb 00 00 Begin White Balance
adj
Wb 00 if End White Balance
adj
internal pattern disappears
2 Adjustment Map
Adj
item Command
lower caseASCII
CMD1
CMD2
Data
Range
HMex IN
MAX
Cool R Gain
j
g00
Co
Gain h 00
CO
B Gain
j
00
CO
Medium
R
Gain
G
Gain
j
a
j
b
00
00
CO
CO
B Gain
j
c 00 Co
Warm
R Gain
Gain
j
d
j
e
00
CO
CO
B Gain
j
f 00
CO
515 Adjustment method
5151 Auto AB calibration
1
Set
TV
in
ADJ mode
using
PONLY
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 RS232C Cable
4
Select
mode
in
ADJ
Program
and
begin
a
adjustment
5
When AB
adjustment
is
completed
with OK
message
check
adjustment
status of
preset
mode
Cool
Medium
arm
6
Remove
probe and
RS232C cable
WB
Adj must
begin
as start
command
wb 00 00 and
finish as end command wb 00
ff
and
Adj
offset if need
5152 Manual
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
WhiteBadjust ausinglaadj nRIC ac9 e
then
press
the cursor to the
right
KEYI9 When
KEYBp is
pressed
206
Gray internal pattern will be
displayed
4 Adjust
Cool modes
i
Fix the
one
of
RGB
gain
to 192
default
data and
decrease the others
If
G
gain
is
adjusted
over 172 and R and B
gain
less than
192Adjust
isOK
ii
If G
gain
is less than 172
Increase G
gain by up
to
172
and then increase
R
gain
and
G
gain
same amount
of increasing G
gain
iii
If R
gain
or B
gain
is over 255
Readjust
G
gain
less than
172
Conform to
R
gain
is 255 or
B
gain
is 255
5 Adjust
two modes Medium
Warm
Fix the
one
of RGB
gain
to 192
default data
and decrease the others
6 Adj
is
completed
Exit adjust
mode
using
EXIT
key on
Remote controller
516 Reference
White
Balance
Adj
coordinate
and
color
temperature
1
Luminance 204 Gray 801RE
2
Standard color coordinate and
temperature using
CS1000
over 26 inch
517 Reference
White
Balance
Adj
coordinate and
color
temperature
Luminance 204 Gray
Standard color coordinate and
temperature using
CS1000
over
26
inch
Mode
Coordinate
Temp
Temp uv
Cool
0
13
000
K 00000
Medium 9
9300K
00000
Warm 9
6500K
00000
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Standard color coordinate and
temperature using
CA21
0CH14 by aging
time
1
Normal line in Korea
From January
to
February
LGD
LB5xxx LB6xxx LB7xxx
LB8xxx Series models
Cool Med ium Warm
GP4
Aging
time
X Y XYXY
Min
271 270 286 289 313 329
1 02 286 295 301 314 328 354
2 35 284 290 299 309 326 349
3 69 282 287 297 306 324 346
4
1019 1 279 283 294 302 321 342
5 2035 276 278 291 297 318 337
6 3649 274 275 289 294 316 334
7 5079 273 272
288
291 315 331
8
80
l9 272
i
1
271
287
290 314 330
9 Over 120 271 270 286 289 313 329
Standard color coordinate and
temperature using
CA21
0CH14 by aging
time
2
Normal line in Korea
From
Rlarch to
December
LGD
LB5xxx LB6xxx LB7xxx
LB8xxx Series
models
Normal line in Mexico LGD
LB5xxx LB6xxx LB7xxx
LB8xxx Series
models
Cool Medium arm
GP4
Aging
time
XYXY
X
Y
Min
271
1
270 286 289 313 329
1 02 282 289 297 308 324 348
2 35 281 287
?
296
306 323 346
3
69
279 284
294 303 321 343
4 1019 277 280 292 299 319 339
5 2035 275 277 290 296 317 336
6 3649 274 274 289 293 316 333
7
5079 273 272 288 291 315 331
8 80119 272 271 287 290 314 330
9 Over 120 271 270 286 289 313 329
3
OS
ModuleAUO
INX
Sharp
CSOT
BCE
cool med warm
x
yxyxy
spec
target
271
278
270
280
286 289
293
299
313
320
329
339
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52
Option
selection per country
521 Overview
1
Tool option selection is
only
done for models in NonUSA
North America due
to rating
2 Applied
model LA42B Chassis
applied
to CANADA and
MEXICO
522
Country Group
selection
1
Press ADJ
key
on the
Adj
RIC and then select
Country
Group
Menu
2 Depending on
destination select US
then
on
the lower
Country option
select
US CA
MX
Selection is done
using +
KEY
523 Tool Option
inspection
Press
Adj key
on the
Adj
RIC then select Tool option
Model Tool1 Toole Tool 3 Tool 4 Tool 5 Tool 6 Tool Area
65L6710033641 4114 25475 64582 43686 2426 33579 22282
UC
+
65LB7100X3641
4114 25475 64582 43686 2426 33579 22282
US
70113710039786
411141 25475 64582 43686 2394 43819 22282
tic
60LB710033640
4114 25475 64581 43686 2394 35627 22282
UT
+55LB7200
134 4114 25475 64582 48038 2394 39723 22282
UB
421136500 4258 4370
33667 64582 2726 2474 47915 22282
UMAUO
421136500162
4370 33667 64582 11174 2474 47915 22282
UMLGD
t
47LB650012282
UM
50166500165
4370 33667 64582 11174 2426 47915 22282
UM
55LB6500166
4370 33155 64582 11174 2394 47915 22282
UPA
60LB6500
12282
U?
42LB630022282
UQ
47L66300259
4379 33155 64582 9126 22427 47915 22282
LC
+
55LB63002282
60LB630022282
us
65L6630022282
JA
+
5516870070
4627 25236 64774 43434 2377 33291 22282
U
Tool option can be reconstructed
by Software
18LGE
Internal Use
Only
LGE910IT000143521
CX13790018
All manuals and user guides at all-guides.com

53 Local
Dimming Inspection
1
Press TILT
key
of the Adj RIO and check moving
patterns
The black bar
patterns
moves from
top
to bottom
If a local
dimming
function does not work a whole screen
shows full white
ocal
dimming
for 56188700UA Local
dimming
for 4IB67166169i700U
Local
dimming
for 47LB676869737500U Local dimming for 505560LB67116869712737500U
54
Magic
Motion remote controller Check
541 Test
equipment
RFremote controller for
check
IRKEYCODE remote
controller
Check AA
battery
before
test
A recommendation is that
a
tester
change battery every
lots
542 Test
1
Make
pairing with
TV set
by pressing
Start
keyWdheel
key
on RCU
2
Check
a cursor on screen
by pressing
Wheel
key
of RCU
3 Stop paring
with TV set
by pressing
Back Home
key
of
RCU
Chassis Model
Name
Magic
RF
receiver
LA42A
55LB8700UA
Builtin
LA42B 55LB7200U
Builtin
543
Applied
models
6065i70LB7100U
4247505560 L B500U
4214755160651136300W
32LN57OBUH
4755 LN5790U
H
4755LA6450UA
55 WiFi
MAC
Address Check
551
Using RS232 Command
Command SetACK
Local
dimming
for 65LB67i686917200U Local
dimming
for 60LB7100U
Localdimmingfor65LB7100U
Local
dimming
for 70LB7100U
Transmission AlSet D20Cr OKx or NG
552 Check
the
menu on instart
Copyright
n 2014
LG
Electronics Inc All
rights reserved 19
Only
for
training
and service
purposes
LGE
Internal Use
Only
Confidential Business Information LGE910IT000143522
Subject
to Protective
Order
All manuals and user guides at all-guides.com

56 3D
pattern
test
Only
for 3D
models
57 HDIMMI ARC Function Inspection
561 Test
equipment
571 Test
equipment
1
Pattern Generator MSHG600 or MSPG6100 HDMI 14
Optic
Receiver Speaker
support
MSHG600 SW 1220
T
2
Pattern HDMI mode model No 872
pattern
No
83
HDMI Cable
for
14
version
562 Test
method
1 Input
3D
test signal as Fig1
Fig1
HDMI Movie 8721 Pattern No B3
2
Press
OK
key as a
3D
input
OSD is
shown
3
Check
pattern
as Fig2 without
3D
glasses 3D
mode
without 3D
glasses
572 Test
method
1
Insert the
HDMI
Cable to the
HDMI ARC
port
from the
master
equipment HDM11
2
Check the sound from the TV Set
3
Check the Sound from the
Speaker
or
using
AV
Optic
TEST
program Its
connected to
MSHG600
Fig2
Fg3
Gh in 3D node without 3G g asses CNG in 3D node without 3D Masses
563
3D
Inner
pattern
1
Using
RS232 Command
Command SetAACKrY
Transmission
API I Set IIDDS 2 COK x or NG7
CK
NGx
2
It
support
internal 3D
pattern
without MASTER
equipment
Except
that
one
other
method
is
same when
use the
MASTER
equipment
Copyright
n 2014
LG
Electronics Inc All
rights reserved
20Only
for
training
and service
purposes
FIlow Line
jF
f
5
s
Remark
Inspect
in Power
Only
Mode and check SW version
in a master
equipment
LGE
Internal Use
Only
Confidential Business Information LGE9101T000143523
Subject
to Protective
Order
All manuals and user guides at all-guides.com