LG 42LE5400, 42LE5750, 42LE5700 Schematic

INPUT

MENU

P

OK

/I

LED LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS :

MODEL : 42LE5400 42LE5400-ZA

MODEL : 42LE5700

42LE5700-ZC

MODEL : 42LE5750 42LE5750-ZC

North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com

Internal Use Only

Printed in KoreaP/NO : MFL66281709 (1006-REV00)

CONTENTS

CONTENTS ..............................................................................2

PRODUCT SAFETY .............................................................................3

SPECIFICATION ...............................................................................6

ADJUSTMENT INSTRUCTION ............................................................14

BLOCK DIAGRAM..............................................................................23

EXPLODED VIEW .............................................................................47

SCHEMATIC DIAGRAMME................................................................ 51

Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only
Only for training and service purposes

SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.

It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm 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 Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect
an electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the
AC plug prongs tied together and touch other ohm-meter lead in
turn to each exposed metallic parts such as antenna terminals,
phone jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩ and 5.2MΩ.
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.

IMPORTANT SAFETY NOTICE

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 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter with
1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to

0.5mA.
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

When 25A is impressed between Earth and 2nd Ground
for 1 second, Resistance must be less than 0.1Ω
*Base on Adjustment standard

Copyright © 2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only
Only for training and service purposes

CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS

NOTE:

If unforeseen circumstances create conflict between the
following servicing precautions and any of the safety precautions
on page3 of this publication, always follow the safety precautions.

Remember: Safety First.

General Servicing Precautions

1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board

module or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug or

other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic

capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an
explosion hazard.

2. Test high voltage only by measuring it with an appropriate high
voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".

3. Do not spray chemicals on or near this receiver or any of its
assemblies.

4. Unless specified otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10% (by volume) Acetone and 90%
(by volume) isopropyl alcohol (90%-99% strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication of
contacts in not required.

5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.

6. Do not apply AC power to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks are
correctly installed.

7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive lead.
Always remove the test receiver ground lead last.

8.

Use with this receiver only the test fixtures specified in this

service manual.

CAUTION: Do not connect the test fixture ground strap to any
heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid-state) devices can be damaged easily
by static electricity. Such components commonly are called

Electrostatically Sensitive (ES) Devices.

devices are integrated circuits and some field-effect transistors
and semiconductor "chip" components. The following techniques
should be used to help reduce the incidence of component
damage caused by static by static electricity.

1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed to
prevent potential shock reasons prior to applying power to the

on page 3 of this publication.

SERVICING PRECAUTIONS

Examples of typical ES

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 grounded-tip soldering iron to solder or unsolder ES
devices.

4. Use only an anti-static type solder removal device. Some solder
removal devices not classified as "anti-static" can generate
electrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads
electrically shorted together by conductive foam, aluminum foil
or comparable conductive material).

7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be
installed.
CAUTION: Be sure no power is applied to the chassis or
circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Otherwise harmless motion such as
the brushing together of your clothes fabric or the lifting of
your foot from a carpeted floor can generate static electricity
sufficient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500。F to 600。F.

2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thoroughly clean the surfaces to be soldered. Use a mall wire­bristle(0.5 inch, or 1.25cm) brush with a metal handle.

Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature.

(500。F to 600。F)

b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-

type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.

6. Use the following soldering technique.

a. Allow the soldering iron tip to reach a normal temperature

(500。F to 600。F)

b. First, hold the soldering iron tip and solder the strand

against the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it
there only until the solder flows onto and around both the
component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.

d. Closely inspect the solder area and remove any excess or

splashed solder with a small wire-bristle brush.

Copyright © 2010 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only
Only for training and service purposes

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following
technique should be used to remove and replace the IC. When
working with boards using the familiar round hole, use the
standard technique as outlined in paragraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by gently
prying up on the lead with the soldering iron tip as the solder
melts.

2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing
the IC.

Replacement

1. Carefully insert the replacement IC in the circuit board.

2. Carefully bend each IC lead against the circuit foil pad and
solder it.

3. Clean the soldered areas with a small wire-bristle brush.

(It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete Transistor
Removal/Replacement

1. Remove the defective transistor by clipping its leads as close as

possible to the component body.

2. Bend into a "U" shape the end of each of three leads remaining

on the circuit board.

3. Bend into a "U" shape the replacement transistor leads.

4. Connect the replacement transistor leads to the corresponding

leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.

Power Output, Transistor Device
Removal/Replacement

1. Heat and remove all solder from around the transistor leads.

2. Remove the heat sink mounting screw (if so equipped).

3. Carefully remove the transistor from the heat sink of the circuit

board.

4. Insert new transistor in the circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heat sink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as possible

to diode body.

2. Bend the two remaining leads perpendicular y to the circuit
board.

3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.

Fuse and Conventional Resistor
Removal/Replacement

1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.

2. Securely crimp the leads of replacement component around

notch at stake top.

3. Solder the connections.

CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.

At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC
connections).

1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).

2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away copper

pattern and let it overlap the previously scraped end of the
good copper pattern. Solder the overlapped area and clip off
any excess jumper wire.

At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.

1. Remove the defective copper pattern with a sharp knife.

Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly
connected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.

Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only
Only for training and service purposes

SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement.

1. Application Range. 3. Test method

This spec sheet is applied to the 32"/37”/42"/47” LED TV used LE?? 1) Performance : LGE TV test method followed.
chassis. 2) Demanded other specification

- Safety : CE, IEC specification

2. Specification -

Each part is tested as below without special appointment.

1) Temperature : 25±5°C(77±9°F), CST : 40±5°C

2) Relative Humidity : 65±10%

3) Power Voltage : Standard input voltage (100~240V@ 50/60Hz)

• Standard Voltage of each products is marked by models

4) Specification and performance of each parts are followed
each drawing and specification by part number in

accordance with BOM .

5) The receiver must be operated for about 5 minutes prior to

the adjustment.

EMC : CE, IEC

4. Module General Specification

No Item Specification Remark

1 Display Screen Device 32”/37”/42”/47” wide Color Display Module LCD with an integral LED backlight

2 Aspect Ratio 16:9

3 LCD Module 32” / 37” / 42”/ 47” Gate in Panel LGD

4 Storage Environment

5 Input Voltage AC100 ~ 240V, 50/60Hz

6 Power Consumption

7 Module Size

Pixel Pitch

8

Back Light

9

Temp. : -20 ~ 60 deg

Humidity : 10 ~ 90 %

Power ON

32” 73.2W LGD

37” 79.7W LGD
42” 98.0W LGD
47” 110.5W LGD

32” 741.1(H) x 435.8(V) x 10.8(D) LGD

37” 862.4(H) x 504.0(V) x 10.8(D) LGD

42” 973.2(H) x 566.2(V) x 10.8(D) LGD

47” 1083.6(H) x 628.80(V) x 10.8(D) LGD

32” 0.36375(H) x 0.36375(V) LGD

32” 0.42675(H) x 0.42675(V) LGD

42” 0.48450(H) x 0.48450(V) LGD

0.54150(H) x 0.54150(V) LGD

32” LED LGD

37” LED LGD

42” LED LGD

47” LED

10 Display Colors 1.06 Billion Color, 16.7M(others)

11 Coating 3H, AG

Copyright © 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only
Only for training and service purposes

g

g

5. Module optical specification

* 32” LED Module (LGD FHD 100Hz)

for more details, refer to the module spec.

No. Item Specification Min. Typ. Max. Remark

Ri

1. Viewing Angle(CR>10)

2. Luminance

3. Contrast Ratio CR 900 1300

4. CIE Color Coordinates

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25±2℃

3) The values specified are at approximate distance 50Cm from the LCD surface

4) Ta= 25±2°C, VDD, H_VDD, VGH, VGL=typ, fV=120Hz, Clk+297MHz, If = 165mA (Typ)

ht/Left (Up/Down)

2

Luminance (cd/m

Variation - 1.3 MAX / MIN

RED

Green

Blue

White

) 360 450

Rx

Ry 0.332
Gx 0.308
Gy 0.597
Bx 0.149
By 0.059

Wx 0.279

Wy 0.292

178 Degree

0.651

32LE5400-ZA/NL
32LE5410-ZA/DE

Typ

-0.03

Typ

+0.03

32LE5700-ZC/CH
32LE5700/EU
32LE5710-ZD/GB
32LE5750-ZC/IT

* 37” LED Module (LGD FHD 100Hz)

for more details, refer to the module spec.

No. Item Specification Min. Typ. Max. Remark

Ri

1. Viewing Angle(CR>10)

2. Luminance

3. Contrast Ratio CR 1000 1400

4. CIE Color Coordinates

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25±2℃

3) The values specified are at approximate distance 50Cm from the LCD surface

4) Ta= 25±2°C, VDD, H_VDD, VGH, VGL=typ, fV=120Hz, Clk+297MHz, If = 165mA (Typ)

ht/Left (Up/Down)

2

Luminance (cd/m

Variation - 1.3 MAX / MIN

RED

Green

Blue

White

) 360 450

Rx
Ry 0.332
Gx 0.306
Gy 0.604
Bx 0.150

By 0.058
Wx 0.279
Wy 0.292

178 Degree

0.647

Typ

-0.03

Typ

+0.03

37LE5400-ZA/NL
37LE5410-ZA/DE
37LE5710-ZD/GB

Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only
Only for training and service purposes

g

g

* 42” LED Module (LGD FHD 100Hz)

for more details, refer to the module spec.

No. Item Specification Min. Typ. Max. Remark

Ri

1. Viewing Angle(CR>10)

2. Luminance

3. Contrast Ratio CR 1000 1400

4. CIE Color Coordinates

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25±2℃

3) The values specified are at approximate distance 50Cm from the LCD surface

4) Ta= 25±2°C, VDD, H_VDD, VGH, VGL=typ, fV=120Hz, Clk+297MHz, If = 165mA (Typ)

ht/Left (Up/Down)

Luminance (cd/m

Variation - 1.3 MAX / MIN

RED

Green

Blue

White

2

) 360 450

Rx
Ry 0.332
Gx 0.309
Gy 0.601
Bx 0.149
By 0.059

Wx 0.279

Wy 0.292

178 Degree

0.647

42LE5400-ZA/NL
42LE5410-ZA/DE

Typ

-0.03

Typ

+0.03

42LE5700-ZC/CH
42LE5700/EU
42LE5710-ZD/GB
42LE5750-ZC/IT

* 47” LED Module (LGD FHD 100Hz)

for more details, refer to the module spec.

No. Item Specification Min. Typ. Max. Remark

Ri

1. Viewing Angle(CR>10)

2. Luminance

3. Contrast Ratio CR 1000 1400

4. CIE Color Coordinates

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25±2℃

3) The values specified are at approximate distance 50Cm from the LCD surface

4) Ta= 25±2°C, VDD, H_VDD, VGH, VGL=typ, fV=120Hz, Clk+297MHz, If = 165mA (Typ)

ht/Left (Up/Down)

Luminance (cd/m

Variation - 1.3 MAX / MIN

RED

Green

Blue

White

2

) 360 450

Rx
Ry 0.332
Gx 0.307
Gy 0.595
Bx 0.149
By 0.059

Wx 0.279

Wy 0.292

178 Degree

0.649

42LE5400-ZA/NL
42LE5410-ZA/DE

Typ

-0.03

Typ

+0.03

42LE5700-ZC/CH
42LE5700/EU
42LE5710-ZD/GB
42LE5750-ZC/IT

Copyright © 2010 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only
Only for training and service purposes

6. Component Video Input (Y, Cb/Pb, Cr/Pr)

No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remark

1 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I)
2 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I)
3 720*576 15.625 50.00 13.500
4 720*480 31.47 59.94 27.000 SDTV 480P
5 720*480 31.50 60.00 27.027 SDTV 480P
6 720*576 31.25 50.00 27.000 SDTV 576P 50Hz
7 1280*720 44.96 59.94 74.176 HDTV 720P
8 1280*720 45.00 60.00 74.250 HDTV 720P
9 1280*720 37.50 50.00 74.25 HDTV 720P 50Hz
10 1920*1080 33.72 59.94 74.176 HDTV 1080I

SDTV, DVD 576I(625I)
50Hz

11 1920*1080 33.75 60.00 74.250 HDTV 1080I
12 1920*1080 28.125 50.00 74.250 HDTV 1080I 50Hz,

13 1920×1080 56.25 50 148.50 HDTV 1080P

14 1920×1080 67.5 60 148.50 HDTV 1080P

7. RGB PC

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark

1. 720*400 31.468 70.08 28.32 For only DOS mode

2. 640*480 31.469 59.94 25.17 VESA

3. 800*600 37.879 60.31 40.00 VESA

4. 1024*768 48.363 60.00 65.00 VESA(XGA)

Input 848*480 60Hz, 852*

-> 640*480 60Hz Display

5. 1280*768 47.78 59.87 80.125 WXGA

6 1360*768 47.78 59.80 84.75 WXGA FHD model

7 1366*768 47.72 59.60 84.75 WXGA WXGA model

8 1280*1024 63.595 60.02 108.875 SXGA FHD model

9 1280*720 45 60 74.25 720p DTV Standard

10. 1920*1080 66.587 59.934 138.5 WUXGA FHD model

Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only
Only for training and service purposes

8. HDMI Input

8-1. DTV Mode

No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remark

1 640*480 31.649 59.94 25.175 SDTV 480p 60Hz

2 640*480 31.469 60 25.20 SDTV 480p 60Hz

3 720*480 31.47 59.94 27.00 SDTV 480p 60Hz

4 720*480 31.50 60 27.027 SDTV 480p 60Hz

5 720*576 31.25 50.00 27.00 SDTV 576p 50Hz

6 1280*720 37.50 50.00 74.176 HDTV 720p 50Hz

7 1280*720 44.96 59.94 74.176 HDTV 720p 60Hz

8 1280*720 45.00 60 74.250 HDTV 720p 60Hz

9 1920*1080 28.125 50.00 74.250 HDTV 1080i 50Hz

10 1920*1080 33.72 59.94 74.176 HDTV 1080i 60Hz

11 1920*1080 33.75 60 74.250 HDTV 1080i 60Hz

12 1920*1080 27.00 24.00 74.25 HDTV 1080p 24Hz

13 1920*1080 33.750 30 74.25 HDTV 1080p 30Hz

14 1920*1080 56.25 50.00 148.50 HDTV 1080p 50Hz

15 1920*1080 67.433 59.94 148.352 HDTV 1080p 60Hz

16 1920*1080 67.50 60 148.50 HDTV 1080p 60Hz

8-2. PC Mode

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark

1. 720*400 31.468 70.08 28.32 HDCP

2. 640*480 31.469 59.94 25.17 VESA HDCP

3. 800*600 37.879 60.31 40.00 VESA HDCP

4. 1024*768 48.363 60.00 65.00 VESA(XGA) HDCP

5. 1280*768 47.78 59.87 80.125 VESA(WXGA) HDCP

6 1360*768 47.72 59.80 84.625 VESA(WXGA) HDCP

7 1280*1024 63.98 60.02 108. SXGA HDCP

8 1400*1050 65.317 59.979 121.75 SXGA HDCP

9. 1920*1080 66.587 59.934 138.5 WUXGA HDCP

Copyright © 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only
Only for training and service purposes

1. Software version up.

1.1. USB DOWNLOAD

1) Press “Menu” Key and select “OK” key after focusing “SETUP” item

2) Press Numeric Keys like following sequences : 1 – 2 – 4 – 7 – 5

3) Factory menu will be displayed

ADJUSTMENT INSTRUCTION

4) press “OK” key after focusing “USB Check” item, then “USB Check” item value will be
changed to “TRUE”

Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only
Only for training and service purposes

5) Copy SW upgrade image “xxxxxx.hdf” to an USB memory stick.

File name Ex.)

Model Name Upgrade image file name
32/42LE5700
32/37/42/47LE5400
32/42LE5750

LE5700.hdf
LE5400.hdf
LE5750.hdf

6) Connects USB memory stick to the side jack(USB IN) of TV

7) Turn Off and On TV with using AC-Power.

8) After Turning on TV, Software upgrade will be done automatically.

9) After upgrading SW, turn off TV and wait 20 second

10) Turn on TV, Check SW version in Diagnostics of SETUP

1.2. Function Check

1) Check display and sound.

2) Check Input and Signal items.(cf. work instructions)
a) TV & DTV
b) AV(SCART, CVBS)
c) COMPONENT(480i)
d) RGB(PC : 1024 x 768 @60Hz)
e) HDMI
f) PC Audio In

3) Display and Sound Check is executed by Remote control.

Copyright © 2010 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only
Only for training and service purposes

2. EDID DOWNLOAD

2-1. Panel Setting

a) You should change the panel size by going to the Factory Mode, press “Menu”, “1”, “2”, “4”, 7”

and “5” keys on a remote.

b) You have to select 32” or 37”, 42”, 47” panel in Factory mode.

32LE5400-ZA : Panel Select  “LC320EUH_SCAx”
32LE5700-ZC : Panel Select  “LC320EUH_SCAx”
32LE5750-ZC : Panel Select  “LC320EUH_SCAx”
37LE5400-ZA : Panel Select  “LC370EUH_SCAx”
42LE5400-ZA : Panel Select  “LC420EUH_SCAx”
42LE5700-ZC : Panel Select  “LC420EUH_SCAx”
42LE5750-ZC : Panel Select  “LC420EUH_SCAx”
47LE5400-ZA : Panel Select  “LC470EUH_SCAx”

2-2. EDID Setting

a) You should change the panel size by going to the Factory Mode, press “Menu”, “1”, “2”, “4”, 7”

and “5” keys on a remote.

b) You have to select “Engineering Menu” in Factory mode.
c) Enter “ EDID Download” by pushing “OK” key.

Factory mode  Engineering menu  EDID Download select

Copyright © 2010 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only
Only for training and service purposes

2-3. PC EDID Table

00 FF FF FF FF FF FF 00 1E 6D ⓐ ⓑ

01 ⓒ 03 80 46 28 78 2A C0 0B A3 57 49 9C 25

11 47 4A A1 08 00 31 40 45 40 61 40 D1 C0 81 80

01 01 01 01 01 01 26 36 80 A0 70 38 1F 40 30 20

25 00 BA 88 21 00 00 1A 16 21 50 A0 51 00 1E 30

48 88 35 00 BA 88 21 00 00 1E 00 00 00 FD 00 39

3E 1E 53 10 00 0A 20 20 20 20 20 20 ⓓ

ⓓ 01 ⓔ

2-4. HDMI EDID Table

00 FF FF FF FF FF FF 00 1E 6D ⓐ ⓑ

01 ⓒ 03 80 46 28 78 2A C0 0B A3 57 49 9C 25

11 47 4A A1 08 00 31 40 45 40 61 40 D1 C0 81 80

01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

45 00 BA 88 21 00 00 1E 16 21 50 A0 51 00 1E 30

48 88 35 00 BA 88 21 00 00 1E 00 00 00 FD 00 3A

3E 1E 53 10 00 0A 20 20 20 20 20 20 ⓓ

02 03 23 F1 4E 90 1F 20 22 11 05 14 04 13 12 03

02 15 01 23 09 17 07 83 01 00 00 ⓕ

ⓕ 2D 01 1D 00 72 51 D0 1E 20 6E 28 55 00 BA

88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96

00 BA 88 21 00 00 18 02 3A 80 18 71 38 2D 40 58

2C 45 00 BA 88 21 00 00 1E 01 1D 80 18 71 1C 16

20 58 2C 25 00 BA 88 21 00 00 9E 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 43

☞ Detail EDID Options are below

ⓐ Product ID

Model Name HEX EDID table DDC Function

FHD Model 0001 01 00 Analog / Digital

ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:

ex) Monthly : ‘03’ -> ‘03’

Year : ‘2010’ -> ‘13’

ⓓ Model Name(Hex) :

Model MODEL NAME (HEX)

ⓓ 01 ⓔ

All 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20

ⓔ Checksum : Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)

INPUT MODEL NAME (HEX)

HDMI 1 67030C001000B82D

HDMI 2 67030C002000B82D

HDMI 3 67030C003000B82D

HDMI 4 67030C004000B82D

Copyright © 2010 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only
Only for training and service purposes

3. FRC DOWNLOAD

a) You should change the panel size by going to the Factory Mode, press “Menu”, “1”, “2”, “4”, 7”

and “5” keys on a remote.

b) You have to select “Engineering Menu” in Factory mode.
c) Enter “ FRC Download” by pushing “OK” key.

Factory mode  Engineering menu  DRC Download select

Copyright © 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only
Only for training and service purposes

4. V-COM Adjust(Only LGD Module)

a) Why need Vcom adjustment?

■ The Vcom (Common Voltage) is a Reference Voltage of Liquid Crystal Driving.

 Liquid Crystal need for Polarity Change with every frame.

b) Adjust sequence

■ You should change the panel size by going to the Factory Mode, press “Menu”, “1”, “2”, “4”, 7”

and “5” keys on a remote.

■ You have to select “Miscellaneous” in Factory mode.

■ Enter “ V-Com” by pushing “OK” key.

■ As pushing the right or the left key on the remote control, and find the V-COM value which is no

or minimized the Flicker.
(If there is no flicker at default value, Press the exit key and finish the VCOM adjustment.)

[LED/LCD Panel VCOM SPEC .]

■ Push the “OK” key to store value. Then the message “Saving OK” is pop.

Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 16 -

LGE Internal Use Only

BLOCK DIAGRAM

1. 32/42LE5700 Block diagram(T+C+S)

2. 32/37/42/47LE5400 Block diagram (T+C)

Copyright © 2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only
Only for training and service purposes

3. 32/42LE5750 Block diagram (T+S)

Copyright © 2010 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only
Only for training and service purposes

MEMO

Copyright © 2010 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only
Only for training and service purposes

- 20 -

LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.

Only for training and service purposes

EXPLODED VIEW

300

200

500

120

A2

A5

A9

A10

A21

840

530

800

LV1

LV2

810

830

540

880

820

521

900

920

710

910

400

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

SCHEMATIC DIAGRAMME

32/42LE5700-ZC

Copyright © 2010 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only
Only for training and service purposes

5

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

JP1

JP1
SMAW200-H24S(BK)

SMAW200-H24S(BK)

D D

JP2

JP2
12505WR-15A

12505WR-15A

C C

1.25mm

1.25mm

B B

SMPS_ON

232426
22
21
20
19
18
17
16
15
14

2mm

2mm

13
12
11
10

9
8

BL_EN_O

7
6

ANA_DIM

5
4
3
2

25

1

1
2
3
4
5
6

17

7

16

8

9
10
11
12
13
14
15

1

TP1 PCB_TP10TP1 PCB_TP10

1

TP2 PCB_TP10TP2 PCB_TP10

1

TP3 PCB_TP10TP3 PCB_TP10

1

TP4 PCB_TP10TP4 PCB_TP10

1

TP5 PCB_TP10TP5 PCB_TP10

1

TP6 PCB_TP10TP6 PCB_TP10

1

TP7 PCB_TP10TP7 PCB_TP10

1

TP8 PCB_TP10TP8 PCB_TP10

1

TP9 PCB_TP10TP9 PCB_TP10

1

TP10 PCB_TP10TP10 PCB_TP10

1

TP11 PCB_TP10TP11 PCB_TP10

1

TP12 PCB_TP10TP12 PCB_TP10

1

TP13 PCB_TP10TP13 PCB_TP10

C10

C10
OPEN-104p/16V/1005

OPEN-104p/16V/1005

R5 102/1005R5 102/1005
R8 103/1005R8 103/1005

C16

C16

104p/16V/1005

104p/16V/1005

U1
FDS6675BZU1FDS6675BZ

3V4_STB

R23

R23
103/1005

103/1005

R11 100/1005R11 100/1005
R12 100/1005R12 100/1005

R28 152/1005R28 152/1005

R18 152/1005R18 152/1005
R17 OPEN-101/1005R17 OPEN-101/1005
R31 101/1005R31 101/1005

R39 000/1005R39 000/1005

8

D15D26D37D4

S11S22S33G

4

TP15

TP15
PCB_TP10

PCB_TP10

1

L2

L2
OPEN-CIC41P600AE

OPEN-CIC41P600AE

PWM1_DIM [11]
PANEL_ER [11]

LED_B

C17

C17
225p/16V

225p/16V

KEY_ADC1 [6]
KEY_ADC2 [6]

LED_B [6]
IR_IN [6]

PWM_BUZZ [6]
LED_R [6]
CDS_OUT [6]

3V4

4

C4

C4
OPEN-100uF/16V/MVK/S

OPEN-100uF/16V/MVK/S

3V3_BCM3556

TP14

TP14
PCB_TP10

PCB_TP10

1

R34

R34
OPEN-121/3216

OPEN-121/3216

3V4_STB

3

20V_SMPS

C2
104p/50VC2104p/50V

3V4_STB

C3
104p/50VC3104p/50V

12V_SMPS

C6
104p/50VC6104p/50V

3V4_STB

R9

R10

R10

472/1005R9472/1005

472/1005

472/1005

ATM_SCL [6]

ATM_SDA_IN [6]

1

R14

R14

ATM_SDA_OUT [6]

103/1005

103/1005

Q3

2 3

MMBT4401Q3MMBT4401

5V

12V_SMPS

D2
ZMMC6V2D2ZMMC6V2

1 2

R43

R43
472/1005

472/1005

R42

R42
472/1005

472/1005

DC_EN [2,3,5]

2

R4 103/1005R4 103/1005

STBY_EN[6]

R13 102/1005R13 102/1005

A_DIM[11]

3V3_BCM3556 3V3_BCM3556

R20

R20
103/1005

103/1005

R22 103/1005R22 103/1005

BLT_EN[11]

12V_SMPS

D1
ZMMC6V2D1ZMMC6V2

1 2

R33

R33
103/1005

103/1005

C9
105p/16V/1005C9105p/16V/1005

U2
KIA7042AFU2KIA7042AF

VCC1GND2OUT3GND

3V4_STB

1

1

4

Q1

23

MMBT4403Q1MMBT4403

R21

R21
102/1005

102/1005

R40 101/1005R40 101/1005

Q4
MMBT4401Q4MMBT4401

2 3

R35

R35
103/1005

103/1005

R36

R36
203/1005

203/1005

1

SMPS_ON

ANA_DIM

BL_EN_O

AC_DETECT [6,36,38]

1

A A

All location are from 01 to 50

12V_SMPS

D D

C C

3V3_BCM3556

B B

A A

All location are from 50 to 100

TP10

TP10
TP50

TP50

TP10

TP10
TP52

TP52

TP10

TP10
TP54

TP54

L57

L57
CIS41P600AE

CIS41P600AE

INSTANT_BOOT[6]

L61

L61

OPEN-CIC10P300NC

OPEN-CIC10P300NC

5

5

1

1

1

R67 475/1005R67 475/1005
R72 OPEN-330/1005R72 OPEN-330/1005

+1V8

A2V5_BCM3556

C87

C87
104p/16V/1005

104p/16V/1005

5

C73

C73
102p/50V/1005

102p/50V/1005

Q5

2 3

MMBT4401Q5MMBT4401

C51

C51
106p/16V/2012

106p/16V/2012

DC_EN[1,3,5]

C60

C60
106p/16V/2012

106p/16V/2012

DC_EN[1,3,5]

2
5
6
7

C52

C52
106p/16V/2012

106p/16V/2012

C61

C61
106p/16V/2012

106p/16V/2012

R62

R62
OPEN-104/F/1005

OPEN-104/F/1005

R63

R63
103/1005

103/1005
R64

R64
3093/F/1005

3093/F/1005

C79

C79
122p/50V/1005

122p/50V/1005

U54

U54

EUP7996

EUP7996

NSD
VDDQ
AVIN
PVIN

R25 103/1005R25 103/1005

VSENSE

9

SMPS_ON

GND_D DGND

4

4

U50

U50
AOZ1073AIL/SO-8L

AOZ1073AIL/SO-8L

2

8

VIN

LX

6

LX7EN

5

FB

COMP

3

PGND

AGND

R51

R51

153/1005

153/1005

C58

C58

222p/50V/1005

222p/50V/1005

U51

U51
AOZ1073AIL/SO-8L

AOZ1073AIL/SO-8L

2

VIN

LX

6

LX7EN

5

FB

COMP

3

PGND

AGND

R58

R58

622/1005

622/1005

C68

C68

332p/50V/1005

332p/50V/1005

C69

DDR_VREF0DDR_VREF1

DDR_VTT

9
16

10
11
14
15

4

8
12
13

C82

C82
104p/16V/1005

104p/16V/1005

C90

C90
100uF/16V/MVK/S

100uF/16V/MVK/S

4

C69

106p/10V/2012

106p/10V/2012

R65

R65
753/F/1005

753/F/1005

R68

R68
104/F/1005

104/F/1005

U53

U53
RT8004P/CP

RT8004P/CP

1

VDD

PVDD
PVDD

2

PGOOD

LX
COMP
RT
SYNC/MODE

EN/SS

PAD

TP10

TP10
TP56

TP56

C81

C81
104p/16V/1005

104p/16V/1005

1

C88

C88
226P/6.3V/2012

226P/6.3V/2012

LX

LX

LX

FB

GND
PGND
PGND

3
5
6

7

17

4

VREF

3
8

VTT

GND1PGND

4
1

R52

R52

103/F/1005

103/F/1005

8
4

1

R61

R61

103/F/1005

103/F/1005

C70

C70

106p/10V/2012

106p/10V/2012

L58

L58
SPC6025-1R0M

SPC6025-1R0M

R66

R66
513/F/1005

513/F/1005

C78 220p/50V/1005C78 220p/50V/1005

L51

L51
SPC10040-4R7M

SPC10040-4R7M

R53

R53

303/F/1005

303/F/1005

R55 122/F/1005R55 122/F/1005

L54

L54
SPC10040-4R7M

SPC10040-4R7M

R59

R59

512/F/1005

512/F/1005

R60 681/F/1005R60 681/F/1005

3V3_BCM3556

C53

C53
106p/10V/2012

106p/10V/2012

C62

C62
106p/10V/2012

106p/10V/2012

C74

C74
226P/6.3V/2012

226P/6.3V/2012

TP10

TP10
TP57

TP57

C83

C83
105p/6.3V/1005

105p/6.3V/1005

3

3

TP10

TP10
TP51

TP51

1

C54

C54
106p/10V/2012

106p/10V/2012

TP10

TP10
TP53

TP53

1

C63

C63
106p/10V/2012

106p/10V/2012

TP10

TP10

+1V8 D1V8_DDR

TP55

TP55

1

C75

C75
226P/6.3V/2012

226P/6.3V/2012

1

R70

R70
103/1005

103/1005

C86

C86
123p/2012

123p/2012

3

U55

U55
RT9183H-PM5

RT9183H-PM5

VI2VO

GND

SD1GND

3

6

L59 OPEN-CIC10P300NCL59 OPEN-CIC10P300NC

4
5

SEN

3V3_BCM3556

1V2_BCM3556

R69 103/F/1005R69 103/F/1005

R71

R71
472/F/1005

472/F/1005

L52

L52
CIC10P300NC

CIC10P300NC

L53

L53
CIC10P300NC

CIC10P300NC

L55

L55
CIC10P300NC

CIC10P300NC

L56

L56
CIS41P600AE

CIS41P600AE

TP10

TP10
TP58

TP58

1

104p/16V/1005

104p/16V/1005

C84

C84

2

2

A3V3_BCM3556

D3V3_BCM3556

A1V2_BCM3556

D1V2_BCM3556

A2V5_BCM3556

2

GND_A

C57

C57
106p/10V/2012

106p/10V/2012

C59

C59
106p/10V/2012

106p/10V/2012

C65

C65
106p/10V/2012

106p/10V/2012

C67

C67
106p/10V/2012

106p/10V/2012

C80

C80
OPEN-106p/10V/2012

OPEN-106p/10V/2012

C85

C85
106p/10V/2012

106p/10V/2012

32/42LE5700-ZC

1

1

32/42LE5700-ZC

1

5

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

12V_SMPS

TP101

TP101

PCB_TP10

PCB_TP10

3V3_FRC

DC_EN[1,2,5]

DC_EN[1,2,5]

PCB_TP10

PCB_TP10

TP103

TP103

U103

U103
LD29150PT/P-PAK 5P

LD29150PT/P-PAK 5P

R115

R115
103/1005

103/1005

C119

C119
105p/16V/1005

105p/16V/1005

1

C101

C101

106p/16V/2012

106p/16V/2012

1

C108

C108

106p/16V/2012

106p/16V/2012

/INH1VIN2GND3VOUT4ADJ5GND

R103

R103

153/1005

153/1005

C103

C103

222p/50V/1005

222p/50V/1005

R109

R109

622/1005

622/1005

C110

C110

332p/50V/1005

332p/50V/1005

6

R113

R113
682/F/1005

682/F/1005

R114

R114
303/F/1005

303/F/1005

TP105

TP105
PCB_TP10

PCB_TP10

C116

C116
101p/50V/1005

101p/50V/1005

D D

12V_SMPS

C C

B B

U101

U101
AOZ1073AIL/SO-8L

AOZ1073AIL/SO-8L

2

VIN

6
5

COMP

3

AGND

U102

U102
AOZ1073AIL/SO-8L

AOZ1073AIL/SO-8L

2

VIN

6
5

COMP

3

AGND

1

C117

C117
226P/6.3V/2012

226P/6.3V/2012

4

8

LX
LX7EN
FB

PGND

LX
LX7EN
FB

PGND

4
1

R104

R104

103/F/1005

103/F/1005

8
4

1

R110

R110

103/F/1005

103/F/1005

1V5_MEMC

C146

C146
226P/6.3V/2012

226P/6.3V/2012

L101

L101
SPC10040-4R7M

SPC10040-4R7M

R105

R105

303/F/1005

303/F/1005

R106 122/F/1005R106 122/F/1005

L102

L102
SPC10040-4R7M

SPC10040-4R7M

R111

R111

512/F/1005

512/F/1005

R112 681/F/1005R112 681/F/1005

C104

C104

OPEN-226P/6.3V/2012

OPEN-226P/6.3V/2012

C111

C111

OPEN-226P/6.3V/2012

OPEN-226P/6.3V/2012

TP102

TP102

PCB_TP10

PCB_TP10

C105

C105
106p/10V/2012

106p/10V/2012

TP104

TP104

PCB_TP10

PCB_TP10

C112

C112
106p/10V/2012

106p/10V/2012

3

1

C106

C106
106p/10V/2012

106p/10V/2012

1

C113

C113
106p/10V/2012

106p/10V/2012

3V3_FRC

1V26_FRC

2

1

A A

All location are from 101 to 130

D D

C C

5

5

12V_SMPS

TP151

TP151
PCB_TP10

PCB_TP10

1

C152

C152
106p/16V/2012

106p/16V/2012

DC_EN[1,2,3]

12V_SMPS

C161

C161
106p/16V/2012

106p/16V/2012

DC_EN[1,2,3]

C153

C153
106p/16V/2012

106p/16V/2012

C207

C207
106p/16V/2012

106p/16V/2012

4

4

R151

R151
104/1005

104/1005

R156

R156
OPEN-000/1005

OPEN-000/1005

R175

R175
104/1005

104/1005

R176

R176
OPEN-000/1005

OPEN-000/1005

R152

R152

203/1005

203/1005

C158

C158

102p/50V/1005

102p/50V/1005

R173

R173

203/1005

203/1005

C159

C159

102p/50V/1005

102p/50V/1005

U151

U151
AOZ1073AIL/SO-8L

AOZ1073AIL/SO-8L

2

VIN

6
5

COMP

3

AGND

U152

U152
AOZ1073AIL/SO-8L

AOZ1073AIL/SO-8L

2

VIN

6
5

COMP

3

AGND

3

3

TP152

TP152
PCB_TP10

8

LX
LX7EN

4

FB

1

PGND

103/F/1005

103/F/1005

8

LX
LX7EN

4

FB

1

PGND

103/F/1005

103/F/1005

R153

R153

R163

R163

L152

L152

SPC10040-4R7M

SPC10040-4R7M

R154

R154

513/F/1005

513/F/1005

R155 302/F/1005R155 302/F/1005

L156

L156

SPC7040-4R7M

SPC7040-4R7M

R172

R172

513/F/1005

513/F/1005

R174 302/F/1005R174 302/F/1005

C154

C154
106p/10V/2012

106p/10V/2012

C164

C164
106p/10V/2012

106p/10V/2012

PCB_TP10

C155

C155
106p/10V/2012

106p/10V/2012

TP154

TP154
PCB_TP10

PCB_TP10

C195

C195
106p/10V/2012

106p/10V/2012

1

C156

C156
OPEN-226P/6.3V/2012

OPEN-226P/6.3V/2012

5V_USB

1

C162

C162
OPEN-226P/6.3V/2012

OPEN-226P/6.3V/2012

2

2

5V

32/42LE5700-ZC

1

1

5V

U155

U155
LD1117AL-ADJ

LD1117AL-ADJ

3

VIN

C7

B B

A A

All location are from 151 to 180

5

106p/10V/2012C7106p/10V/2012

5V

TP157

TP157
PCB_TP10

PCB_TP10

2

VO

4

TAP

ADJ

1

C200

C200
105p/6.3V/1005

105p/6.3V/1005

L153 CIC10P300NCL153 CIC10P300NC

L154 CIC10P300NCL154 CIC10P300NC

4

1

R164

R164
121/F/1005

121/F/1005

R165

R165
201/F/1005

201/F/1005

AGC_VDDO

C171

C171
104p/16V/1005

104p/16V/1005

5V_CI

5V_NOR

C163

C163
106p/10V/2012

106p/10V/2012

C167

C167
106p/10V/2012

106p/10V/2012

3

5V

C8
106p/10V/2012C8106p/10V/2012

U156

U156
LD1117AL-ADJ

LD1117AL-ADJ

3

VIN

VO

TAP

ADJ

1

C205

C205
105p/6.3V/1005

105p/6.3V/1005

2
4

TP158

TP158
PCB_TP10

PCB_TP10

1

R168

R168
121/F/1005

121/F/1005

R169

R169
201/F/1005

201/F/1005

3V3_NOR

C204

C204
105p/6.3V/1005

105p/6.3V/1005

2

32/42LE5700-ZC

1

5

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

System Reset

D D

1 2
3 4

S181

S181
JTP1127WEM

JTP1127WEM

3V4_STB

R181

R181
103/1005

103/1005

R182

R182
102/1005

102/1005

C181

C181
104p/16V/1005

104p/16V/1005

RESETn

uCOM JTAG

3V4_STB

JP181

JP181

MISO

1 2

SCK

3 4

RESETn

5 6

OPEN-2X3(2.54mm)

OPEN-2X3(2.54mm)

C C

B B

MOSI

PWM_BUZZ[1]

STBY_EN[1]

ATM_SCL[1]
ATM_SDA_IN[1]
ATM_SDA_OUT[1]

LED_B[1]

SC_MUTE[36]

4

3V4_STB

R199

R199
OPEN-000/2012

OPEN-000/2012

R234

R234
103/1005

103/1005

COMP

R239

R239
513/1005

513/1005

CEC_A[20,35]

CEC_O[35]

MOSI
MISO
SCK

RA[11,34]
TA[11,34]

R189 101/1005R189 101/1005

IR_IN[1]

C188

C188
OPEN-103p/50V/1005

OPEN-103p/50V/1005

C184

C184
106p/10V/2012

106p/10V/2012

U181

U181

5

VCC1

17

VCC2

38

VCC3

40

PB0 (XCK/T0)

41

PB1 (T1)

42

PB2 (AIN0/INT2)

43

PB3 (AIN1/OC0)

44

PB4 (SS)

1

PB5 (MOSI)

2

PB6 (MISO)

3

PB7 (SCK)

9

PD0 (RXD)

10

PD1 (TXD)

11

PD2 (INT0)

12

PD3 (INT1)

13

PD4 (OC1B)

14

PD5 (OC1A)

15

PD6 (ICP)

16

PD7 (OC2)

6

GND1

18

GND2

28

GND3

39

GND4

ATMEGA324PA-AU

ATMEGA324PA-AU

C185

C185
104p/16V/1005

104p/16V/1005

(ADC0) PA0
(ADC1) PA1
(ADC2) PA2
(ADC3) PA3
(ADC4) PA4
(ADC5) PA5
(ADC6) PA6
(ADC7) PA7

(SCL) PC0

(SDA) PC1

(TCK) PC2
(TMS) PC3
(TDO) PC4

(TDI) PC5
(TOSC1) PC6
(TOSC2) PC7

RESETn

3

C186

C186
104p/16V/1005

104p/16V/1005

AVCC

AREF

XTAL2
XTAL1

27
37
36
35
34
33
32
31
30
29

19
20
21
22
23
24
25
26

4

7
8

C187

C187
104p/16V/1005

104p/16V/1005

R185 330/1005R185 330/1005
R186 330/1005R186 330/1005

R198 330/1005R198 330/1005

R188 103/1005R188 103/1005

3V4_STB

R183 562/F/1005R183 562/F/1005
R184 562/F/1005R184 562/F/1005

KEY_ADC2
KEY_ADC1

MOD1_ID
MOD2_ID
CDS_OUT

MOD3_ID
MOD4_ID

RESETn

R187 000/1005R187 000/1005

Y181

Y181

10.111MHZ/12PF/SMD

10.111MHZ/12PF/SMD

12

C189

C189
5R6p/50V/1005

5R6p/50V/1005

104p/16V/1005

104p/16V/1005

KEY_ADC2 [1]
KEY_ADC1 [1]
INSTANT_BOOT [2]
LED_R [1]
BCM_INT [11]

CDS_OUT [1]

I2C0_SCL [12,13]

I2C0_SDA [12,13]
AC_DETECT [1,36,38]
AMP_RESET [38]

C191

C191
OPEN-160p/50V/1005

OPEN-160p/50V/1005

C190

C190
5R6p/50V/1005

5R6p/50V/1005

KEY_ADC2

KEY_ADC1

C182

C182

2

104p/16V/1005

104p/16V/1005

Y182

Y182

32.768kHz/12.5pF/SMD

32.768kHz/12.5pF/SMD

112

4

4

C192

C192
OPEN-160p/50V/1005

OPEN-160p/50V/1005

R190 103/1005R190 103/1005
R192 103/1005R192 103/1005
R194 103/1005R194 103/1005
R196 103/1005R196 103/1005

1

C183

C183

2
3

3

R191 OPEN-103/1005R191 OPEN-103/1005
R193 OPEN-103/1005R193 OPEN-103/1005
R195 OPEN-103/1005R195 OPEN-103/1005
R197 OPEN-103/1005R197 OPEN-103/1005

3V4_STB

MOD1_ID
MOD2_ID
MOD3_ID
MOD4_ID

A A

All location are from 181 to 210

D D

C C

B B

A A

5

5

COMP_Y[37]

COMP_Pb[37]

COMP_Pr[37]

SCART1_R[36]

SCART1_G[36]

SCART1_B[36]

L211 CIH10TR15JNCL211 CIH10TR15JNC

C211 150p/50V/1005C211 150p/50V/1005

C213

C213
150p/50V/1005

150p/50V/1005

L212 CIH10TR15JNCL212 CIH10TR15JNC

C214 150p/50V/1005C214 150p/50V/1005

C215

C215
150p/50V/1005

150p/50V/1005

L213 CIH10TR15JNCL213 CIH10TR15JNC

C225 150p/50V/1005C225 150p/50V/1005

C220

C220
150p/50V/1005

150p/50V/1005

L214 CIH10TR15JNCL214 CIH10TR15JNC

C235 150p/50V/1005C235 150p/50V/1005

C237

C237
150p/50V/1005

150p/50V/1005

L215 CIH10TR15JNCL215 CIH10TR15JNC

C242 150p/50V/1005C242 150p/50V/1005

C241

C241
150p/50V/1005

150p/50V/1005

L216 CIH10TR15JNCL216 CIH10TR15JNC

C250 150p/50V/1005C250 150p/50V/1005

C251

C251
150p/50V/1005

150p/50V/1005

Place all these components near Connector

C212

C212
150p/50V/1005

150p/50V/1005

C216

C216
150p/50V/1005

150p/50V/1005

C226

C226
150p/50V/1005

150p/50V/1005

C236

C236
150p/50V/1005

150p/50V/1005

C243

C243
150p/50V/1005

150p/50V/1005

C252

C252
150p/50V/1005

150p/50V/1005

4

4

HD_Y

HD_Pb

HD_Pr

SCART_R

SCART_G

SCART_B

3

3

PC_G

PC_G[34]
PC_B[34]
PC_R[34]

PC_HSYNC[34]
PC_VSYNC[34]

AV_CVBS[37]
SCART1_CVBS[36]
RF_CVBS[9,27]
REAR_CVBS[37]

SIF[27]

R261 100/1005R261 100/1005

PC_B

R265 100/1005R265 100/1005

PC_R

R266 100/1005R266 100/1005 R213 360/F/1005R213 360/F/1005

HD_Y
HD_Pb
HD_Pr

SCART_G
SCART_B
SCART_R

R220 14R7/F/1005R220 14R7/F/1005
R222 14R7/F/1005R222 14R7/F/1005
R224 14R7/F/1005R224 14R7/F/1005
R228 14R7/F/1005R228 14R7/F/1005

A2V5_BCM3556

C258 104p/16V/1005C258 104p/16V/1005

R230

R230
OPEN-240/1005

OPEN-240/1005

1

TP211 PCB_TP08TP211 PCB_TP08

1

TP212 PCB_TP08TP212 PCB_TP08

1

TP213 PCB_TP08TP213 PCB_TP08

SD_CVBS1
SD_CVBS2
SD_CVBS3
SD_CVBS4

R227

R227
103/1005

103/1005

R231

R231
123/1005

123/1005

PC_G
PC_B
PC_R

HD_Y
HD_Pb
HD_Pr

SCART_G
SCART_B
SCART_R

SD_CVBS1
SD_CVBS2
SD_CVBS3
SD_CVBS4

C222 104p/16V/1005C222 104p/16V/1005
C223 104p/16V/1005C223 104p/16V/1005
C218 104p/16V/1005C218 104p/16V/1005

C227 104p/16V/1005C227 104p/16V/1005
C221 104p/16V/1005C221 104p/16V/1005
C229 104p/16V/1005C229 104p/16V/1005

C230 104p/16V/1005C230 104p/16V/1005
C231 104p/16V/1005C231 104p/16V/1005
C233 104p/16V/1005C233 104p/16V/1005

C244 104p/16V/1005C244 104p/16V/1005
C246 104p/16V/1005C246 104p/16V/1005
C248 104p/16V/1005C248 104p/16V/1005
C257 104p/16V/1005C257 104p/16V/1005

SCART1_ID[36]
FB1[36]

R235 750/F/1005R235 750/F/1005
R236 750/F/1005R236 750/F/1005
R237 750/F/1005R237 750/F/1005

R238 750/F/1005R238 750/F/1005
R240 750/F/1005R240 750/F/1005
R241 750/F/1005R241 750/F/1005

R242 750/F/1005R242 750/F/1005
R243 750/F/1005R243 750/F/1005
R244 750/F/1005R244 750/F/1005

R245 60R4/F/1005R245 60R4/F/1005
R246 60R4/F/1005R246 60R4/F/1005
R247 60R4/F/1005R247 60R4/F/1005
R285 60R4/F/1005R285 60R4/F/1005

2

2

U211P

U211P
BCM3556FKFSB1G

BCM3556FKFSB1G

BGA704_SKT_SMTBG_BCM3556

BGA704_SKT_SMTBG_BCM3556

AE9

SD_G

AH9

SD_B

AD10

SD_R

AG3

RGB_HSYNC

AF4

RGB_VSYNC

AG15

SD_Y1

AF15

SD_PB1

AE15

SD_PR1

AG16

SD_Y2

AH17

SD_PB2

AF16

SD_PR2

AG14

SD_Y3

AF14

SD_PB3

AE14

SD_PR3

AH10

SD_L1

AG10

SD_C1

AE11

SD_L2

AF11

SD_C2

AH13

SD_L3

AE12

SD_C3

AD9

SD_CVBS1

AG11

SD_CVBS2

AG12

SD_CVBS3

AF13

SD_CVBS4

AF17

SD_SIF1

AE16

SD_FS

AE17

SD_FS2

AD15

SD_FB

Analog Video

Analog Video
Inputs

Inputs

SD_INCM_G
SD_INCM_B
SD_INCM_R

SD_INCM_COMP1

SD_INCM_COMP2

SD_INCM_COMP3

SD_INCM_LC1

SD_INCM_LC2

SD_INCM_LC3

SD_INCM_CVBS1
SD_INCM_CVBS2
SD_INCM_CVBS3
SD_INCM_CVBS4

SD_INCM_SIF1

AF9
AG9
AC10

AH15

AH16

AH14

AE10

AH11

AF12

AC9
AF10
AH12
AG13

AG17

32/42LE5700-ZC

C217 104p/16V/1005C217 104p/16V/1005
C224 104p/16V/1005C224 104p/16V/1005
C219 104p/16V/1005C219 104p/16V/1005

C228 104p/16V/1005C228 104p/16V/1005

C232 104p/16V/1005C232 104p/16V/1005

C234 OPEN-104p/16V/1005C234 OPEN-104p/16V/1005

C245 104p/16V/1005C245 104p/16V/1005
C247 104p/16V/1005C247 104p/16V/1005
C249 104p/16V/1005C249 104p/16V/1005
C253 104p/16V/1005C253 104p/16V/1005

A2V5_BCM3556

R226

R226
103/1005

103/1005

C259 OPEN-104p/16V/1005C259 OPEN-104p/16V/1005

R232

R232
123/1005

123/1005

32/42LE5700-ZC

1

1

R211 360/F/1005R211 360/F/1005
R212 360/F/1005R212 360/F/1005

R214 360/F/1005R214 360/F/1005

R215 360/F/1005R215 360/F/1005

R216 OPEN-360/F/1005R216 OPEN-360/F/1005

R221 360/F/1005R221 360/F/1005
R223 360/F/1005R223 360/F/1005
R225 360/F/1005R225 360/F/1005
R262 360/F/1005R262 360/F/1005

R233

R233
OPEN-120/1005

OPEN-120/1005

All location are from 211 to 270

5

4

3

2

1

5

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

D D

PC_LI[34]
PC_RI[34]

C C

B B

COMP_LI[37]
COMP_RI[37]

CVBS_LI[37]
CVBS_RI[37]

SCART1_LI[36]
SCART1_RI[36]

REAR_CVBS_LI[37]
REAR_CVBS_RI[37]

R271 343/F/1005R271 343/F/1005 C271 105p/6.3V/1005C271 105p/6.3V/1005
R274 343/F/1005R274 343/F/1005

R272 343/F/1005R272 343/F/1005
R276 343/F/1005R276 343/F/1005

R277 343/F/1005R277 343/F/1005
R279 343/F/1005R279 343/F/1005

R280 343/F/1005R280 343/F/1005
R282 343/F/1005R282 343/F/1005

R295 343/F/1005R295 343/F/1005
R294 343/F/1005R294 343/F/1005

4

R297 123/F/1005R297 123/F/1005
R298 123/F/1005R298 123/F/1005

R300 123/F/1005R300 123/F/1005

R325 123/F/1005R325 123/F/1005
R299 123/F/1005R299 123/F/1005

R327 123/F/1005R327 123/F/1005
R326 123/F/1005R326 123/F/1005

R330 123/F/1005R330 123/F/1005
R329 123/F/1005R329 123/F/1005

C274 105p/6.3V/1005C274 105p/6.3V/1005

C272 105p/6.3V/1005C272 105p/6.3V/1005
C276 105p/6.3V/1005C276 105p/6.3V/1005

C277 105p/6.3V/1005C277 105p/6.3V/1005
C279 105p/6.3V/1005C279 105p/6.3V/1005

C280 105p/6.3V/1005C280 105p/6.3V/1005
C282 105p/6.3V/1005C282 105p/6.3V/1005

C296 105p/6.3V/1005C296 105p/6.3V/1005
C298 105p/6.3V/1005C298 105p/6.3V/1005

U211T

U211T
BCM3556FKFSB1G

BCM3556FKFSB1G

BGA704_SKT_SMTBG_BCM3556

BGA704_SKT_SMTBG_BCM3556

AE6

AUDMX_LEFT1

AD7

AUDMX_RIGHT1

AH4

AUDMX_LEFT2

AG5

AUDMX_RIGHT2

AG6

AUDMX_LEFT3

AF7

AUDMX_RIGHT3

AH5

AUDMX_LEFT4

AG7

AUDMX_RIGHT4

AD8

AUDMX_LEFT5

AF8

AUDMX_RIGHT5

AH7

AUDMX_LEFT6

AH8

AUDMX_RIGHT6

3

Analog Audio Input Mux

Analog Audio Input Mux

AUDMX_INCM1

AUDMX_INCM2

AUDMX_INCM3

AUDMX_INCM4

AUDMX_INCM5

AUDMX_INCM6

2

AF6

AG4

AE7

AH6

AE8

AG8

C273 104p/16V/1005C273 104p/16V/1005

C275 104p/16V/1005C275 104p/16V/1005

C278 104p/16V/1005C278 104p/16V/1005

C281 104p/16V/1005C281 104p/16V/1005

C295 104p/16V/1005C295 104p/16V/1005

C283 105p/6.3V/1005C283 105p/6.3V/1005
C285 105p/6.3V/1005C285 105p/6.3V/1005R328 123/F/1005R328 123/F/1005
C287 105p/6.3V/1005C287 105p/6.3V/1005
C289 105p/6.3V/1005C289 105p/6.3V/1005
C297 105p/6.3V/1005C297 105p/6.3V/1005

R273 5R1/F/1005R273 5R1/F/1005

R275 5R1/F/1005R275 5R1/F/1005

R278 5R1/F/1005R278 5R1/F/1005

R281 5R1/F/1005R281 5R1/F/1005

R283 5R1/F/1005R283 5R1/F/1005

1

A A

All location are from 271 to 300

5

5

4

4

3

3

2

2

32/42LE5700-ZC

1

1

Video Output

A3V3_BCM3556

R301

R301
100/1005

100/1005

D D

C301

C301
104p/16V/1005

104p/16V/1005

R308

R308
5620/F/1005

5620/F/1005

C C

C307

C307
103p/50V/1005

103p/50V/1005

VDAC_VREG

VDAC_RBIAS

U211O

U211O
BCM3556FKFSB1G

BCM3556FKFSB1G

BGA704_SKT_SMTBG_BCM3556

BGA704_SKT_SMTBG_BCM3556

Analog Video

Analog Video
Outputs

Outputs

AH21

VDAC_VREG

AH22

VDAC_RBIAS

VDAC_2

VDAC_1

R435

R435
OPEN-000/1005

AG19

AH20

R309

R309
37R4/F/1005

37R4/F/1005

VDAC_OUT

RF_CVBS[7,27]

OPEN-000/1005

R436

R436
OPEN-000/1005

OPEN-000/1005

C449

C449
104p/16V/1005

104p/16V/1005

2

S1A

5

S1B

11

S1C

14

S1D

3

S2A
S2B6IN

10

S2C

13

S2D

U303

U303

16

IDTVS330QG

IDTVS330QG

VCC

GND

8

C305

C305
104p/16V/1005

U301

U301
FMS6141S5X/SO8

FMS6141S5X/SO8

1

GND

2

4

DA
DB
DC
DD

EN

C309 104p/16V/1005C309 104p/16V/1005

7
9
12

1

SC1_SEL [11]

15

SC1_MUTE [11]

GND

VDin3VDout

104p/16V/1005

5

VCC

R437

R437
750/F/1005

750/F/1005

4

Audio Output

R305

R305
153/F/1005

153/F/1005
R306

R306
153/F/1005

153/F/1005

R312

R312
153/F/1005

153/F/1005
R313

R313
153/F/1005

153/F/1005

AUD_REF_9V

C304

C304
390p/50V/1005

390p/50V/1005

C308 390p/50V/1005C308 390p/50V/1005
R307 343/F/1005R307 343/F/1005

R310

R310

C311

C311

683/F/1005

683/F/1005

390p/50V/1005

390p/50V/1005

C312 390p/50V/1005C312 390p/50V/1005
R314 343/F/1005R314 343/F/1005

R303

R303
683/F/1005

683/F/1005

U211A

U211A
BCM3556FKFSB1G

BCM3556FKFSB1G

BGA704_SKT_SMTBG_BCM3556

BGA704_SKT_SMTBG_BCM3556

Audio In/Out

Audio In/Out

AH1

SPDIF_IN_P

AF3

SPDIF_IN_N

AE18

I2S_CLK_IN

AD17

I2S_DATA_IN

AD18

B B

I2S_LR_IN

AUD_LEFT0_P
AUD_LEFT0_N

AUD_RIGHT0_P
AUD_RIGHT0_N

AUD_LEFT1_P
AUD_LEFT1_N

AUD_RIGHT1_P
AUD_RIGHT1_N

AUD_LEFT2_P
AUD_LEFT2_N

AUD_RIGHT2_P
AUD_RIGHT2_N

AUD_SPDIF

I2S_CLK_OUT

I2S_DATA_OUT

I2S_LR_OUT

AH26
AG26

AG25
AH25

1
2 3

2 3
1

2 3
1

1
2 3

4

4

4

4

SPDIF_OUT [34]

I2S_OUT_CLK [38]
I2S_OUT_DAT [38]
I2S_OUT_WS [38]

AG23

RN301

RN301

AH23

150*2

150*2

AH24

RN302

RN302

AG24

150*2

150*2

AE21

RN303

RN303

AF21

OPEN-150*2

OPEN-150*2

AG22

RN304

RN304

AF22

OPEN-150*2

OPEN-150*2

AH2

AF18
AH19
AG18

AUD_LEFT1_p
AUD_LEFT1_n

AUD_RIGHT1_p
AUD_RIGHT1_n

HP_LP_OUT [38]
HP_LN_OUT [38]

HP_RP_OUT [38]
HP_RN_OUT [38]

AUD_LEFT1_p
AUD_LEFT1_n

AUD_RIGHT1_p
AUD_RIGHT1_n

C314 106p/6.3VC314 106p/6.3V
C315 106p/6.3VC315 106p/6.3V

C316 106p/6.3VC316 106p/6.3V
C317 106p/6.3VC317 106p/6.3V

L301

L301
CIC10P300NC

CIC10P300NC

C306

C306
106p/10V/2012

106p/10V/2012

C310 220uF/6.3V/SC310 220uF/6.3V/S
C313 220uF/6.3V/SC313 220uF/6.3V/S

R304

R304
683/F/1005

683/F/1005

84

3

+

+

2

-

-

AUD_REF_9V

R311

R311

683/F/1005

683/F/1005

84

5

+

+

6

-

-

C302

C302
104p/50V

104p/50V

1

U302A

U302A
TL072CD

TL072CD

7

U302B

U302B
TL072CD

TL072CD

5V_NOR

C303

C303
106p/16V/2012

106p/16V/2012

SC1_CVBSO [36]

R302 750/3216R302 750/3216

DC301

DC301
ZMM5239B(9V1)

ZMM5239B(9V1)

1 2

SC1_LOUT [36]

SC1_ROUT [36]

12V_SMPS

A A

All location are from 301 to 350

5

32/42LE5700-ZC

4

3

2

1