LG 55LB6500 Service Manual Download Page 5 | Manualshive

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background image

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

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

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

Copyright

n

2014

LG

Electronics

Inc

All

rights

reserved

Only

for

training

and

service

purposes

Confidential

Business

Information

Subject

to

Protective

Order

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

LGE

Internal

Use

Only

LGE910IT000143508

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Summary of Contents for 55LB6500

Page 1: ...com AsiaOceania httpbizlgservicecom LED TV SERVICEMANUAL 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 ...

Page 2: ...MENT INSTRUCTION 13 EXPLODED VIEW 24 SCHEMATIC CIRCUIT DIAGRAM Copyright n 2014 LG Electronics Inc All rights reserved 2 Only for training and service purposes LGE Internal Use Only Confidential Business Information LGE910IT000143505 Subject to Protective Order ...

Page 3: ...ug 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 chassi...

Page 4: ...ice 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 antis...

Page 5: ...lReplacement 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 n 2014 LG Electronics Inc All rights reserved Only for training and service purposes Confidential Business Information Subject to Protective Order 3 Solder the connections CAUTION Maintain original spacing between the replac...

Page 6: ...put 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 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 Safety ...

Page 7: ...D LC600DUFFGF1 60LB71 00UT 1920X1080 450CD COLOR 68 169 16001 240HzT Inverter N LED 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 N LED 3DFPR WOTcon 41 Vv 8Bit 10000k 1781178 6msGTGnOTS LG Display Co Ltd T420HVJ010 FHD 421NCH 1920X1080 AUO T420HVJ011 42LB6500UM 30...

Page 8: ... 65LB7100UB 1920X1080 450CD COLOR 68 169 16001 240HzT Inverter N LED 3DFPR WTcon 1172W 813it 10000k 178178 6msGTGHSPJDark Titan LG Display CoLtd 10 Operating Environ1 Temp 0 w 40 deg ment 2 Itumidity 80 11 Storage Environ1 Temp 20 60 deg meat 2 Humidity 85 Copyright n 2014 LG Electronics Inc All rights reserved Only for training and service purposes 8 LGE Internal Use Only Confidential Business In...

Page 9: ... 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 4 800600 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 ...

Page 10: ...sed mode 1024766 48363 60004 65000 2D to 3D SS TB 2 3 1360768 19201060 47712 6750 60015 600085500 14850D 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 ...

Page 11: ...idebyside 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 Copyright n 2014 LG Electronics Inc All rights re...

Page 12: ...tom 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 Sequenti...

Page 13: ...nt 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 pr...

Page 14: ...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 Ser...

Page 15: ...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 ...

Page 16: ...orks 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 5 C Warmup time About 5 Min Surrounding Hum...

Page 17: ... 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 iFix 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...

Page 18: ...ghts reserved Only for training and service purposes Confidential Business Information Subject to Protective Order 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...

Page 19: ... 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...

Page 20: ...er 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 2C OKx or NG7 CK NGx 2 It support internal 3D pattern without MASTER equipment Except that ...

Page 21: ...oses 6 Camera Port Inspection 1 Objective To check how it connects between Camera and PCBA normally and their Function 2 Test Method This Inspection is available only PowerOnly Status i Push Camera lip ii Cameras Preview picture apeears on TV Set iii Push Camera Down 0 Cf iVY Qrl Pwo OAy 3nsymci t 61 Shipout mode check instop after final inspection press InStop key of the Adj RC and check that the...

Page 22: ...t 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 didnt work Otherwise USB data is automatically detected 3 Show the message Copying files from memory 4 Updating is staring 5 Updating Completed The TV will restart automatically 6 If your TV is turned on check your updated version and ...

Page 23: ...013 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 PWress ADhJ keiy t eEZ aBdjust ausing laadj RnIC c6e then press the cursor to the right KEYi When KEYS is pressed 216 Gray internal pattern will be displayed 4 One of R Gain I G Gain B Gain should be fixed at 192 and the rest will be...

Page 24: ...tlcs These parts are iderrtified by in the Scher ratio Diagram and EXPLODED VIE it is essential that these special safety parts should be replaced with the same components as recvrnmerded in this manual to prevent XRADIAT ON Shock Fire or other Hazards Do not modify the original design without permission of manufacturer 24 LGE Internal Use Only Confidential Business Information LGE910IT000143527 S...

Page 25: ...rH m 0001 00 LL rH J LL Ix aaaaaa aa aa a auouou ou ou ommmmm nog mm mm U fflHE NNNNN NN N zl L H 000000 10 00 00 Confidential Business Information LGE910IT000143528 Subject to Protective Order ...

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Page 27: ...M 0 N MMMM U 71 LU i LF1 Inni I 24 124 LU 0 U LU C0 0 0 C Confidential Business Information LGE910ITC00143530 Subject to Protective Order ...

Page 28: ...o as 88888888 mm mmmmmmm III s 1 0000 000000 000 000 0000 0 00 00 Ob 00000000 00000000 0000000 0 0000 I mititiiry8itittmnnrytt8tiiint uJ Fw w H QI w u0 cn CE Confidential Business Information LGE910IT000143531 Subject to Protective Order ...

Page 29: ...PAGE 5 THE 0 OFHOPRHOIFISBEFORTHEINTHE L OPTHE 4 SECRET G LG 4 4 IMUDEL11 IDATE I 31aLLLKM14SHEET ...

Page 30: ...PAGE 6 THE 0 OFIpFARPIREANDIFISBEFORTHECOpINTHE L OFTHE I Cap II 1T CapSECRET LG LG CapCapMODELMID DATE I 31aLLLKVCC B GNDSHEET ...

Page 31: ...LU LLJ w LIl rHrH C a H CA 0 IN Jw Iz u0 uuJ 0 o qua a H Ln N t Confidential Business Information LGE910IT000143534 Subject to Protective Order ...

Page 32: ...R a n a s a s M I COM M14 zz E THE It OFFIRPIREANDIFISBEFORTHEINTHEOFTHE 0 SECRET G EP P62P63 6 A01 9 A21 LG PAGE 9 363534flfl3130281427P2ANI52625ForCECIMUDEL M D DATE I 132231aLLLKSHEET ...

Page 33: ...0 H L ooEI IuJ LF1 00 Confidential Business Information LGE910IT000143536 Subject to Protective Order ...

Page 34: ... a1110 NITHEUMARK OF THISANDHAZZARDSFROMFIRETHATONLY BE USEDFORTHE IN THEMARK OF THE 113 D D T S TESTONLY 3 5V ST OPT 340V 125 M RX a M JACKSide OLG ELECTRONICSAV 1 CV P S I N S 0CCOMP2 Y FCOMPZ Y SOY MEDEL I DATE I QLDEK AV JACK SHEET PlaceSOCSide ...

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Page 36: ...THEMARK OF THISFORFROMFIREAND IF IS SECRETTHATONLY BE USEDFORTHE IN THE I MARK OF THE 113 IF9 USB2 MAX 1 5A LG ELECTRONICS PAGE 13 UseSDOSTTe MODEL DATE BLOCK USE 2 3 SHEET 1 ...

Page 37: ...OCP USB1THEMARK OF THISFORFROMFIREAND IF IS THATONLY BE USEDFORTHE IN THE J MARY OF THESECRET 3 11 OLG ELECTRONICS PAGE 14 UseSDOSUse MODEL DATE 2013 BLOCK USB 1 DVR SHEET 1 ...

Page 38: ...PAGE 16 Ethernet Block THE L MARK OF THISFORFROMFIREAND IF IS SECRETTHATONLY BE USEDFORTHE IN THEMARK OF THE 113 IF9 LG ELECTRONICS MLIDEL QLULK DATE SHEET ...

Page 39: ...Ethernet Block THE 0 OFHOPRHOIFISSECRETBEFOR LG THEINTHE L OPTHE LG I 1 MODEL PAGE 17 IDATE I BLOCKSHEET ...

Page 40: ...o a ti6 T DVDDNCRBCK SD 5 6 7 B 41 0x54CUT 15 30 29 28 27 26 25 24 23 VDR1 NC 4 AGND 9 22 10 21 H N C u C r m m o a H O H N W IX 0 IX C U a N N N N N v C 0 0 0 N 12 E 12 12 W H H H W 0 0 H H H CLCLCL 0 0 0 x V4P Tov 1 ol Tso T 751V 58 Teti 0 PKNONTHEMARK OF THIS S E CR T THATONLY BE USEDFORTHE IN THE A MARK OF THE I r C C C 11 sLG ELECTRONICS084 mpQEL I DATE SHEET I 8 Q LOEK ...

Page 41: ...PAGE 2 0 EARPHONE AMP I THE MARK OF THISANDHAZZARDSFROMFIRETHATONLY BE USEDFORTHE IN THE A MARK OF THE I r OLG ELECTRONICS29AMP MODEL DATE QLMEK SHEET I 61 ...

Page 42: ...I 01 31 3 3 V 9 e I I xF e lN I I xe N Dxe N IU I THE 0 OFFARPIREANDIFISSECRETBEFOR LG THEIN THE OFTHE LG oU 1sxxexD oi MODEL a LOCK DATE SHEET ...

Page 43: ...YY H Confidential Business Information LGE910IT000143546 Subject to Protective Order ...

Page 44: ... x a LL 0 0 00 N cc x x x x a a a 0i w w w w 07 U U U U U U UU U U U U U U U U U U UU J U U LLLLLL L L L III IIII II H LU U LU CO Confidential Business Information LGE910IT000143547 Subject to Protective Order ...

Page 45: ...ww Iz UU J I 1 1 I I H Q 0 LI Confidential Business Information LGE910IT000143548 Subject to Protective Order ...

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Page 47: ...aMMC IF af833v T Dnrl t r At VDDIJustPDUTHE It OFFARPIREANDIFISBEFORTHEINTHE L OFTHESECRET G T LG AOAlUse441BOUse45HyunMODEL a LOCK PAGE 30 DATE SHEET ...

Page 48: ...IR BLASTER n 0 o THEMARK OF THISFORFROMFIREAND IF IS THATONLY BE USEDFORTHE IN THE I MARY OF THESECRET 3 11 PAGE 31 oa a B TR e T PT L i IR D I OLG ELECTRONICS MODEL DATE 2013 QLEEK IR SHEET 110 ...

Page 49: ...PAGE 32 RS232CControl 4 osoz V U 1 THEMARK OF THISANDHAZZARDSFROMFIRETHATONLY BE USEDFOR I r THE IN THE A MARK OF THE 11 OLG ELECTRONICS MODEL QLULK DATE SHEET ...

Page 50: ...Confidential Business Information LGE910IT000143553 Subject to Protective Order ...

Page 51: ...ai 2014 LEDLCD TV Engineering guide Applicable Model Mid end 55LB7200706560LB71006055504742 L B6500 6560554742 LB6300 ...

Page 52: ...p and features 2 Model naming and tool option 3 New features 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assys 7 New sub assys Instruction of new sub assys How to use tool Download 8 Repair guide ...

Page 53: ...Confidential Business Information LGE910IT000143556 Subject to Protective Order ...

Page 54: ...1 Confidential Business Information LGE910IT000143557 Subject to Protective Order ...

Page 55: ...Confidential Business Information LGE910IT000143558 Subject to Protective Order ...

Page 56: ...00 Model naming and Tool option CID Standard of 2014 Model Name Li ModelNameDescription of Tool Options F Tooloptioninfo ...

Page 57: ...Confidential Business Information LGE910IT000143560 Subject to Protective Order ...

Page 58: ...tN t Confidential Business Information LGE910IT000143561 Subject to Protective Order ...

Page 59: ...C0 Confidential Business Information LGE910IT000143562 Subject to Protective Order ...

Page 60: ...00 Main PCB for BroadbandxxLB7200UB To PSU Chassis LA42B PCB PNo a Main DDR MemoryMicom for KeyIR sensing WiFi BTMagicRemoconreceiverAudio AMP 12W 12W LVDS or EPI Wafer PSU 1 Key I R 2 WIFI BT ...

Page 61: ...in PCB for Broadband xxL 71 00xx To PSU To module Chassis LA42B PCB PNo Main DDR MemoryMicom for KeyIR sensing WiFi BTMagicRemoconreceiverAudio AMP 1 2W 1 2W LVDS or EPI Wafer PSU rout Sp 1 Key IR 2 WIFI BT ...

Page 62: ...00 Main PCB for BroadbandChassis LA42B PCB PNo Main DDR MemoryMicom for KeyIR sensing WiFi BTMagicRemoconreceiverAudio AMP 12W 12W LVDS or EPI Wafer PSU Front Spk 1 Key I R 2 WIFI BT ...

Page 63: ...CL 0 m Confidential Business Information LGE910IT000143566 Subject to Protective Order ...

Page 64: ...D E IP Line Out IR Bla ReadyAVCOMP R E A R OPTIC LAN 0 OCP 15A OCP 15A AMP XTAL 25MHz XTAL 24MHz I DigitalDemodAnalogDemod USB DDR31600 X 16 512MB X 2EA ICI 01 M14 LVDS 1 41 P HDMI EPI 50P MUX 12C 2 150P 12S Out h 12C 1 SPDIF OUT 12C 2 14 10 12C 3 14 0 DDR31600 X 16 256MB X 2EA SYSTEMEEPROM256Kb eM MC 8G B PM IC Audio AMP 10 LOCAL Sub MicomRENESAS XTAL ...

Page 65: ...Confidential Business Information LGE910IT000143568 Subject to Protective Order ...

Page 66: ...cD C0 a O Confidential Business Information LGE910IT000143569 Subject to Protective Order ...

Page 67: ...00 a C Confidential Business Information LGE910IT000143570 Subject to Protective Order ...

Page 68: ...ART EU Only SC IDFBSCRGB SC SCLRIN J K4600TunerTUCVBSTUNER I I I I I I I SC ID SOC SC FB SOC FCOMP1 PB IN SOC I I AUADLCH2IN AUAD I I I I I I TUNER SIF ADC IINN I I NSOY2I N PB2I N PR2INAUDALCH3INAUDARCH3IN IC101 M14 CVBSIN2SC1SIDSC1FBPB1INY1 AU H2INCVBSIN1 AAD ADCSIF INN ...

Page 69: ...C0 0 00 O Confidential Business Information LGE910IT000143572 Subject to Protective Order ...

Page 70: ...2 Confidential Business Information LGE910IT000143573 Subject to Protective Order ...

Page 71: ... C VGH VGL U 4 EO GSTGCLKMC LK 0 IC101 M14 O 50Pin X 2 E PI Tx Block PVCOM 00 U EPI CH1121314 1VCOM 121 z 8 EPI CH5161718 1CLK1CLK6 a M f0 0 SWPCTRLSWNCTRLN G MA4GMA51GA M7G MA121GMA141GMA15 4 i VGH RST 6 VG PRST G MA4GMA5GAM71GMA121G EPI LOCK8 EPI LOCK8 6 m 22 ...

Page 72: ... 4 10 USB3 DP CD GA HUB PORT OVERO HUB VBUSCTRLO USB CTL1 I1 0 3 O USB DM2 USB2 10 USB3DM1USBDP2USB3DP1 USB OCD2 SS C3 EBCS21USBCTL2USB21DPOEBCS1EBCS0 A USB2 0 DP01 US820DM Id of M14 USB DM3 USB DP3 USB OCD3 USB CTL3 D M USB3EYYSCLEYESCA LED IR KEY1KEY2 0 0 0 0 ...

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Page 74: ...connection PCBs 55LB7200UB 00 Main PCB Power Board I R Key Assy 0 WIFIBT Assy Cables 0 Main LPB 24Pin cable 0 Main Module LVDS Cable 0 LED driver I PSU 0 10Pin IR key Cable 0 8Pin WIFIBT Assy Cable 0 SPK Cable ...

Page 75: ...L 00UC Power Board I R Key Assy WIFIBT Assy Cables Main LPB 24Pin cable Main Module LVDS Cable LED driver I PSU 0 10Pin IR key Cable 0 8Pin WIFIBT Assy Cable 0 SPK Cable 0O Interconnection PCBs O Main PCB ...

Page 76: ...100UT PCBs O Main PCB Power Board I R Key Assy WIFIBT Assy Cables m Main LPB 24Pin cable Main Module LVDS Cable 0 LED driver I PSU 0 10Pin IR key Cable 0 8Pin WIFIBT Assy Cable 0 SPK Cable 0O Interconnection ...

Page 77: ...connection PCBs 55LB6500U M 0 0 Main PCB Power Board I R Key Assy WIFIBT Assy Cables 0 Main LPB 24Pin cable 0 Main Module LVDS Cable 0 LED driver I PSU 0 10Pin IR key Cable 0 8Pin WIFIBT Assy Cable 0 SPK Cable ...

Page 78: ...onnection PCBs 42L 5OO U Alit 00 Main PCB Power Board I R Key Assy WIFIBT Assy Cables 0 Main LPB 24Pin cable 0 Main Module LVDS Cable 0 LED driver I PSU 0 10Pin IR key Cable 0 8Pin WIFIBT Assy Cable 0 SPK Cable ...

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Page 80: ...Introductions of 14Y WIFI BT built in assy Magic Remote control 1 System 2 Block diagram 3 Paring method ...

Page 81: ... Sequence When it is paired the remote sends success FW version BDADDR to the receiver The receiver sends the pairing success packet to TV directly FW version and BDADDR packets are just saved on the receiver The receiver sends FW version or BDADDR packet to TV when it is requiredMotion Data Period 75msec Motion Data gyro Voice Data Period 1 Omsec Voice sampling 16khz 16bit ...

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Page 83: ...ing success the remoteunpairing should blink LED for some time and Method 2 Repairing TV send pairing success packet Press BACK button for 5 sec back to TV When remote try to unpairing it doesnt care about state of receiverstand alone When remote try to unpairing it doesnt care about state of receiverstand alone After unpairing all pairing RF Unpairing Press HOME button and BACK button at should b...

Page 84: ...I Built in assy feature Block diagram 34 54 Wafer 8pin 125mm GND BT REGON 3DG G N D USB DPDN VCC USB DP DN Crystal 374MHz 33V 12V SwitchRTC6603SwitchRTC66080RFLPF1608 BT TX Antenna 24G Antenna24GSGAntenna24GSG ...

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Page 87: ... image light spot externaldevice color error 6 6 No power 7 7 B Power error Off when on off while viewing power auto onoff 8 8 A di C No video 9 9 u o errorWrecked 10 10 D Functionerror No response in remotecontroller key errorrecordingerrormemoryerror 11 11 Externaldevicerecognitionerror 12 12 E Noise Circuit noise noise 13 13 F ExteriorerrorExteriordefect 14 First of all Check whether there i SV...

Page 88: ...thod A6 7 eo error o v eo eo ag s op LCDTV Versioncheckingmethod A7 9 LCD TV diagram A8 10 TunerChecking Part A9 11 A VideoerrorColorerrorCheck Link Cable LVDS 12 Adjustment Test pattern ADJ Key A12 13 LCD TV diagram A8 14 A Video bar residual image light spot Check Link Cable LVDS 15 Adjustment Test pattern ADJ Key A12 16 Exchange TCon Board 1 A15 17 Exchange TCon Board 2 A25 18 AppendixDefected ...

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Page 91: ... Menu Set ups Support Signal Test Signal strength Normal over 50 SignalQualityNormalover 50 Checkwhetherother have problem or not By RF Cable at otherequipment DVD maker TV etc Check RF Cable 1 2 InstallBoosterClose N A7 Contact with signal or Cable or Air Close SW UpgradeMenuSetupBooster N BoostermenuOnOffCheckOffOnCheckCheckTunersolderingReplace Main BD ...

Page 92: ...6 Check RF signal cable DVB signal or not Checkwhetherotherequipments have problem or not By connecting RF Cable at otherequipmentSetTopBoxmaker TV etc ChecksettingCheck LNB frequencyCheckCheckDiSEqC motor etc Y A7 TAT SW UpgradeContact with signal or Cable or Air CloseNormalPictureCloseCheckReplaceTunersoldering Main BD ...

Page 93: ...tom Color errorRevised date 413 A8 Y A12 CheckcolorinputmodeColorerrorExternal Input Checkdevice and errorcableKepiace wu Colorerror I Externaldevice y equest repai for ReplaceMain BD RGBICheckExternaldevice Y 1 device and CableReplaceMain BD cablenormal ...

Page 94: ...nal device screenerrorColor error Check SW Check N Screen Y normal p SW Upgrade Check by inputInput RGB T ExternalInput errorComponentReplaceModule A28 For LGD panel For other panel Connectotherdevice and cableChecknormal of Input RGB and by Jig patternSettop Box etc otherdevice and cable Hi Checknormal of Input RGB and by Jig patternRnx p Screen ScreenReplacenormalMain BID ly Requestrepair for de...

Page 95: ...ower Revised date 613 A17 StandBy Red Operatingwhite DC P ower on Power LEO Y Normal by pressingPower Key NI Check Powercordwasproperly On Remote N Normal voltageNormal voltage N A18 ReplacePower BD 1 ReplacePower BD Replace Power BD ReplaceMain BD Replace Main BD ...

Page 96: ...serefer to the all caseswhich can be displayed on power off mode LPU ReplaceMain BD I NormallbnornormaNormal N ReplacePower BD ReplacePower BD ReplaceMain BID Status Power off List Power off by REMOTEPower off by OFF TIMERPower off by SLEEPTIMERPower off by INSTOP KEY Power off by AUTO OFF NormalPower off by ON TIMERPower off by RS232CPower off by RecordPower off by End of Power off by SW Power of...

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Page 98: ...edaudiolCheckinputsignal R F InputsignalSignalnormal I N Y Check an speaker a Noise for all audioWreckedaudioNoise only for DTV WreckedaudioReplaceMain BD A25 Normaivoltage When RF signal is not receivedRequestrepair to providerNoise only for AnalogWrgcked aUdio T Replace Vft BD Noise only input N and checkNormal otherdevice audio Y Check and fix device p 8 ...

Page 99: ...controlRCoperatingerror A27 Check RC itselfNormalOperationoperating N Check RC Operating When turn off light in roomCheckReplaceBaterry of RC Normal N operating aPA27 a m s 1 0 9 Is e 8 E 0 8 0 8 If RC operateExplain the cause is from light in roomNormaloperating N Replace RC Close lraA27 A4 Replace Main BD NormalSignal Y IR BD ...

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Page 101: ...oise X noise is a natural and apply the 1st level When the does not agree apply the process by stage X the basis of the in Part related to nose in the OwnersManual OR When the nose is severereplace the module For models with fix upgrade the SW or provide the X If there is a Tak Tak noise from the cabinetrefer to the KMS fix and then proceed as shown in the manual For modelswithout any fix provide ...

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Page 103: ... PowererrorOff when on off whileviewing OFF MODE checkingmethod A22 27 B PowererrorOff when on off whileviewingBOARD PIN voltagecheckingmethod A18 28 Checkingmethod in menu when there is no audio A24 29 C AudioerrorNovideoVoltage and speakercheckingmethod when there is no audio A25 30 C AudioerrorWreckedVoltage and speakercheckingmethod in case of audioerror A25 31 D Functionerror No response in r...

Page 104: ... 201311 30 LCD TV sympto date RevisedContentCheckWhiteBalancevalue date A4 LL 1 Entry method 1 Press the ADJ button on the remotecontroller for adjustmen 2 Enter into White Balance of item 3 After recording the R G B GAIN Cut value of Color Temp enter the value after replacing the MAIN BOARD ...

Page 105: ...isedContentPower Board voltagemeasuringmethod date A5 Direct LED Check the DC 24V 12V 35V 24 Pin Power Board H Main Board Common 1 Power on 2 INVON 3 35V 4 PDIM 1 5 35V 6 35V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 LDIMOVS 23 LDIMO MOSI 24 LDIMO SCLK ...

Page 106: ...al Error y m A Video error Video error video lagstop 201311 30 LCD TV s mpto date Content TUNER input signalstrengthcheckingmethodRevised A6 date ALL P MENU ChannelManualselectchannel When the signal is strong use the attenuator 10dB 15dB 20dB etc ...

Page 107: ...al Error y m A Video error Video error video lagstop201311 30 LCD TV s mpto date ContentLCDTVVersioncheckingmethodRevised A7 date AL L F Version 1 Checkingmethod for remote for adjustment Press the I NSTART with the remotecontroller for adjustment ...

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Page 109: ... video lagstop 201311 30 LCD TV symptom date ContentTUNERchecking part Revised A9 date AI I I Checkingmethod 1 Check the signal strength or check whether the screen is normal when the externaldevice is 2 After measuring each voltage from power supply finallyreplace the MAIN BOARD ...

Page 110: ...ror Color error Established 30 2013 11 LCD TV symptom date Content Test pattern ADJ Key Revised A12 date You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULEerrorADDBARSCAN BAR 4Video error of MODULE or MainBD ...

Page 111: ...x Exchange TCon Board 1 Solderdefect CNT BrokenSolder defect CNT BrokenSolder defect CNT BrokenSolder defect CNT BrokenSolder defect Abnormal Power Section A15 Solder defect CNT BrokenAbnormal Power SectionSolderdefect ...

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Page 114: ... OL Appendix Exchange the Module 1 Panel Mura Light leakageCrosstalk Press damage Panel Mura Light leakage Press damage Press damage CrosstalkUnrepairable Cases In this case please exchange the module A45 ...

Page 115: ...ck Source TAB IC Defect Block Gate TAB IC Defect Block Gate TAB IC DefectVertical Line Source TAB IC Defect Block Gate TAB IC DefectVertical Block Source TAB IC Defect line Gate TAB IC DefectUnrepairable Cases In this case please exchange the module A55 ...

Page 116: ...Standard ReDair Process Detail Technical Manual Error y m B Power error No power 201311 o LCD TV s mpto date RevisedContentCheckfrontdisplay LED date A17 ...

Page 117: ...BY 35V Revised A18 date Checkingmethod when power is ON When stby only 3 is normally on Direct LED Check the DC 24V 12V 35V 24 Pin Power Board H Main Board Common 1 Power on 2 INVON 3 35V 4 PDIM 1 5 35V 6 35V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 LDIMOVS 23 LDIMO MOSI 24 LDIMO SCLK ...

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Page 120: ...D 8 10 12 PDIM 2 24V GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 LDIMOVS 23 LDIMO MOSI 24 LDIMO SCLK Checking order when there is no audio Check the contactcondition of or 241 connector of Main Board Me sure the 24V input voltagesupplied from P wer Board If 11t 1 here is no input voltage remove and check the connectorConnect the tester R 1 to the speakerterminal and outpu...

Page 121: ...te A27 AL L P P4000 GND 35VWOLBTRESETUSBDM NC USBDP WOL GND EYESDAChecking order 1 Chec IF cable cflndtlonBetween R Main board Check the st by 3 5V on the terminal 16 4 when checking the PieAmp when the polder is in 7N condition it is normal when the Analo Tester needle moues slowly and detective when It does no move at all 9 10 11 12 13 14 15 M W 16 qw 17 1 GND EYESCL KEY1 GND KEY2 GND ...

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