LG 47LV770S Bedienungsanleitung

LED LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LD12D

MODEL : 47LV770S 47LV770S-ZA

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 : MFL67002350 (1108-REV00)

Only for training and service purposes

CONTENTS

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

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

SPECIFICATION ...................................................................................... 4

ADJUSTMENT INSTRUCTION ............................................................... 8

EXPLODED VIEW .................................................................................. 15

SCHEMATIC CIRCUIT DIAGRAM ..............................................................

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 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 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 1 MΩ and 5.2 MΩ.

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 1.5 K / 10 watt resistor in parallel with a 0.15 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 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

0.5 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

1.5 Kohm/10W

To Instrument's

exposed

METALLIC PARTS

Good Earth Ground

such as WATER PIPE,

CONDUIT etc.

AC Volt-meter

When 25A is impressed between Earth and 2nd Ground

for 1 second, Resistance must be less than 0.1

*Base on Adjustment standard

IMPORTANT SAFETY NOTICE

0.15 uF

Ω

Only for training and service purposes

SPECIFICATION

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

1. Application range

This specification is applied to the LED LCD TV used LD12D

chassis.

2. Requirement for Test

Each part is tested as below without special appointment.

1) Temperature: 25 ºC ± 5 ºC(77 ºF ± 9 ºF), CST: 40 ºC ± 5 ºC

2) Relative Humidity : 65 % ± 10 %

3) Power Voltage

: Standard input voltage (AC 100-240 V~, 50 / 60 Hz)

* 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.

3. Test method

1) Performance: LGE TV test method followed

2) Demanded other specification

- Safety : CE, IEC specification

- EMC :CE, IEC

4. Model General Specification

No. Item Specification Remarks

1 Market EU(PAL Market-36Countries) DTV & Analog (Total 36 countries)

DTV (MPEG2/4, DVB-T) : 31 countries

(England/Italy/Germany/France/Spain/Sweden/Finland/Netherlands/Belgium/Luxemburg/

Greece/Denmark/Czech/Austria/Hungary/Swiss/Croatia/Turkey/Norway/Slovenia/Poland/

Ukraine/Portugal/Ireland/Morocco/Latvia/Estonia/Lithuania/Rumania/Russia/Slovakia)

DTV (MPEG2/4, DVB-T2): 5 countries (England/Denmark/Sweden/Finland/Norway)

DTV (MPEG2/4, DVB-C): 10 countries

Sweden/Finland/Austria/Swiss/Germany/Netherlands/Hungary/Slovenia/Norway/Denmark

DTV (MPEG2/4,DVB-S): 31 countries

Albania/Austria/Belgium/Bosnia/Bulgaria/Croatia/Czech/Estonia/France/Germany/Greece/

Hungary/Ireland/Italy/Kazakhstan/Latvia/Lithuania/Luxembourg/Morocco/Netherlands/Poland/

Portugal/Romania/Russia/Serbia/Slovenia/Spain/Slovakia/Switzerland/Turkey/Ukraine

Analog Only - 5 countries (Bosnia/Serbia/Bulgaria/Albania/Kazakhstan)

Supported satellite : 22 satellites

HISPASAT 1C/1D, ATLANTIC BIRD 2, NILESAT 101/102, ATLANTIC BIRD 3, AMOS 2/3,

THOR 5/6, IRIUS 4, EUTELSAT-W3A, EUROBIRD 9A, EUTELSAT-W2A, HOTBIRD 6/8/9,

EUTELSAT-SESAT, ASTRA 1L/H/M/KR, ASTRA 3A/3B, BADR 4/6, ASTRA 2D, EUROBIRD

3, EUTELSAT-W7, HELLASSAT 2, EXPRESS AM1, TURKSAT 2A/3A, INTERSAT10

2 Broadcasting system 1) PAL-BG

2) PAL-DK

3) PAL-I/I’

4) SECAM L/L’, DK, BG, I

5) DVB-T

6) DVB-C

7) DVB-T2

8) DVB-S DVB-S :Satellite

Only for training and service purposes

No. Item Specification Remarks

3 Receiving system Analog : Upper Heterodyne GDVB-T

Digital : COFDM , QAM - Guard Interval(Bitrate_Mbit/s)

1/4, 1/8, 1/16, 1/32

- Modulation : Code Rate

QPSK : 1/2, 2/3, 3/4, 5/6, 7/8

16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8

64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8

GDVB-T2

- Guard Interval(Bitrate_Mbit/s)

1/4,1/8,1/16,1/32,1/128,19/128,19/256,

- Modulation : Code Rate

QPSK : 1/2, 2/5, 2/3, 3/4, 5/6

16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6

64-QAM : 1/2, 2/5, 2/3, 3/4, 5/6

256-QAM : 1/2, 2/5, 2/3, 3/4, 5/6

GDVB-C

- Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s

- Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM

GDVB-S

- Symbolrate

DVB-S2 (8PSK/ QPSK) : 2 ~ 45 Msymbol/s

DVB-S (QPSK) : 2~ 45 Msymbol/s

-viterbi

DVB-S mode :1/2, 2/3, 3/4, 5/6, 7/8

DVB-S2 mode : 1/2, 23, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10

Scart Gender Jack(1EA)

PAL, SECAM

Scart Jack is Full scart and support MNT/DTV-OUT, DTV Recording(not support DTV Auto AV)

5 Video Input RCA(2EA) PAL, SECAM, NTSC 4System : PAL, SECAM, NTSC, PAL60

Rear 1EA, AV gender jack 1EA

6 Head phone out Antenna, AV1, AV2, AV3,

Component, RGB, HDMI1, HDMI2,

HDMI3, HDMI4, USB

7 Component Input(1EA) Y/Cb/Cr, Y/Pb/Pr Component Gender 1EA

8 RGB Input RGB-PC Analog(D-SUB 15PIN)

9 HDMI Input (4EA) HDMI1-DTV/DVI PC(HDMI version 1.3)

HDMI2-DTV Support HDCP

HDMI3-DTV

HDMI4-DTV

10 Audio Input (4EA) RGB/DVI Audio, Component, AV1, 2 L/R Input

11 SDPIF out (1EA) SPDIF out

12 USB (2EA) EMF, DivX HD, For SVC(download) JPEG, MP3, DivX HD

Only for training and service purposes

5. Component Video Input (Y, CB/PB, CR/PR)

No. Specification Remark

Resolution H-freq(kHz) V-freq(Hz)

1. 720x480 15.73 60.00 SDTV,DVD 480i

2. 720x480 15.63 59.94 SDTV,DVD 480i

3. 720x480 31.47 59.94 480p

4. 720x480 31.50 60.00 480p

5. 720x576 15.625 50.00 SDTV,DVD 625 Line

6. 720x576 31.25 50.00 SDTV 576p

7. 1280x720 45.00 50.00 HDTV 720p

8. 1280x720 44.96 59.94 HDTV 720p

9. 1280x720 45.00 60.00 HDTV 720p

10. 1920x1080 31.25 50.00 HDTV 1080i

11. 1920x1080 33.75 60.00 HDTV 1080i

12. 1920x1080 33.72 59.94 HDTV 1080i

13. 1920x1080 56.250 50 HDTV 1080p

14. 1920x1080 67.5 60 HDTV 1080p

No. Specification Proposed Remarks

Resolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)

1. 720*400 31.468 70.08 28.321 For only DOS mode

2. 640*480 31.469 59.94 25.17 VESA Input 848*480 60 Hz, 852*480 60 Hz

-> 640*480 60 Hz Display

3. 800*600 37.879 60.31 40.00 VESA

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

5. 1360*768 47.72 59.8 84.75 WXGA

6. 1920*1080 66.587 59.93 138.625 WUXGA FHD model

6. RGB (PC)

Only for training and service purposes

7. HDMI Input

(1) DTV Mode

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

1. 720*400 31.468 70.08 28.321 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. 1360*768 47.72 59.8 84.75 WXGA HDCP

6. 1280*1024 63.595 60.0 108.875 SXGA HDCP/FHD model

(2) PC Mode

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

1. 720*480 31.469/31.5 59.94/60 27.00/27.03 SDTV 480P

2. 720*576 31.25 50 54 SDTV 576P

3. 1280*720 37.500 50 74.25 HDTV 720P

4. 1280*720 44.96/45 59.94 /60 74.17/74.25 HDTV 720P

5. 1920*1080 33.72/33.75 59.94 /60 74.17/74.25 HDTV 1080I

6. 1920*1080 28.125 50.00 74.25 HDTV 1080I

7. 1920*1080 26.97/27 23.97/24 74.17/74.25 HDTV 1080P

8. 1920*1080 33.716/33.75 29.976 /30.00 74.25 HDTV 1080P

9. 1920*1080 56.250 50 148.5 HDTV 1080P

10. 1920*1080 67.43/67.5 59.94 /60 148.35/148.50 HDTV 1080P

Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LED LCD TV

with LD12D chassis.

2. Designation

(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 ºC ± 5 ºC of temperature and 65 % ± 10 % of relative

humidity if there is no specific designation.

(4) The input voltage of the receiver must keep AC 100-240

V~, 50 / 60Hz.

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

the adjustment when module is in the circumstance of over

15.

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.

[Caution]

When still image is displayed for a period of 20 minutes or

longer (especially where W/B scale is strong. Digital pattern

13ch and/or Cross hatch pattern 09ch), there can some

afterimage in the black level area.

3. Automatic Adjustment

3.1. ADC Adjustment

(1) Overview

ADC adjustment is needed to find the optimum black level

and gain in Analog-to-Digital device and to compensate

RGB deviation.

* If Adjust ADC is “OTP”, It doesn’t need ADC adjustment.

(GP3-BCM)

(2) Equipment & Condition

1) Jig (RS-232C protocol)

2) MSPG-925 Series Pattern Generator(MSPG-925FA,

pattern - 65)

- Resolution : 480i Comp1

1080P Comp1

1920*1080 RGB

- Pattern : Horizontal 100% Color Bar Pattern

- Pattern level : 0.7 ± 0.1 Vp-p

- Image

(3) Adjustment

1) Adjustment method

- Using RS-232, adjust items in the other shown in

“3.1.(3).3)”

2) Adj. protocol

Ref.) ADC Adj. RS232C Protocol_Ver1.0

3) Adj. order

- aa 00 00 [Enter ADC adj. mode]

- xb 00 04 [Change input source to Component1(480i&1080p)]

- ad 00 10 [Adjust 480i Comp1]

- xb 00 06 [Change input source to RGB(1024*768)]

- ad 00 10 [Adjust 1024*768 RGB]

- ad 00 90 End adj.

3.2. MAC Address/ CI+/ Widevine key D/L

Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port

Communication Port connection

ACom 1,2,3,4 and 115200(Baud rate)

Mode check : Online Only

ACheck the test process: DETECT -> MAC -> CI -> Widevine

APlay : START

AResult : Ready, Test, OK or NG

APrinter Out(MAC Address Label)

Protocol Command Set ACK

Enter adj. mode aa 00 00 a 00 OK00x

Source change xb 00 40 b 00 OK40x (Adjust 480i, 1080p Comp1 )

xb 00 60 b 00 OK60x (Adjust 1920*1080 RGB)

Begin adj. ad 00 10

Return adj. result OKx (Case of Success)

NGx (Case of Fail)

Read adj. data (main) (main)

ad 00 20 000000000000000000000000007c007b006dx

(sub) (Sub)

ad 00 21 000000070000000000000000007c00830077x

Confirm adj. ad 00 99 NG 03 00x (Fail)

NG 03 01x (Fail)

NG 03 02x (Fail)

OK 03 03x (Success)

End adj. aa 00 90 a 00 OK90x

PCBA PC(RS-232C)

RS-232C Port

Only for training and service purposes

3.3. LAN Inspection

(1) Equipment & Condition

AEach other connection to LAN Port of IP Hub and Jig

(2) LAN inspection solution

ALAN Port connection with PCB

ANetwork setting at MENU Mode of TV

Asetting automatic IP

ASetting state confirmation

-> If automatic setting is finished, you confirm IP and

MAC Address.

3.4. Widevine Key Inspection

Widevine key Inspection

- Confirm key input Data at the “IN START” MENU Mode.

3.5. LAN PORT INSPECTION(PING TEST)

Connect SET -> LAN port == PC -> LAN Port

(1) Equipment setting

1) Play the LAN Port Test PROGRAM.

2) Input IP set up for an inspection to Test Program.

*IP Number : 12.12.2.2

(2) LAN PORT inspection (PING TEST)

1) Play the LAN Port Test Program.

2) Connect each other LAN Port Jack.

3) Play Test (F9) button and confirm OK Message.

4) Remove LAN cable.

3.6. Model name & Serial number Download

(1) Model name & Serial number D/L

APress “Power on” key of service remote control.

(Baud rate : 115200 bps)

AConnect RS232 Signal Cable to RS-232 Jack.

AWrite Serial number by use RS-232.

AMust check the serial number at Instart menu.

(2) Method & notice

A. Serial number D/L is using of scan equipment.

B. Setting of scan equipment operated by Manufacturing

Technology Group.

C. Serial number D/L must be conformed when it is

produced in production line, because serial number D/L

is mandatory by D-book 4.0.

* Manual Download (Model Name and Serial Number)

If the TV set is downloaded by OTA or service man,

sometimes model name or serial number is initialized.(Not

always)

There is impossible to download by bar code scan, so It

need Manual download.

a. Press the ‘instart’ key of ADJ remote control.

b. Go to the menu ‘5.Model Number D/L’ like below photo.

c. Input the Factory model name(ex 42LW950-ZA) or Serial

number like photo.

d. Check the model name Instart menu. -> Factory name

displayed. (ex 42LW750S-ZA)

e. Check the Diagnostics. (DTV country only) -> Buyer

model displayed. (ex 42LW750S-ZA)

SET PC

Only for training and service purposes

3.7. CI+ Key checking method

Check whether the key was downloaded or not at ‘In Start’

menu. (Refer to below).

=> Check the Download to CI+ key value in LGset.

3.7.1. Check the method of CI+ Key value

(1) Check the method on Instart menu.

(2) Check the method of RS232C Command.

1) Into the main assembly mode (RS232 : aa 00 00)

2) Check the key download for transmitted command.

(RS232 : ci 00 10)

3) Result value

- Normally status for download : OKx

- Abnormally status for download : NGx

3.7.2. Check the method of CI+ Key value (RS232)

1) Into the main assembly mode (RS232 : aa 00 00)

2) Check the method of CI+ key by command (RS232 : ci

00 20)

3) Result value

i 01 OK 1d1852d21c1ed5dcx

3.8. WIFI MAC ADDRESS CHECK

(1) Using RS232

(2) Check the menu on in-start

4. Manual Adjustment

4.1. ADC Adjustment

ADC adjustment is needed because of OTP(Auto ADC adjustment)

4.2. EDID(The Extended Display Identification

Data)/DDC(Display Data Channel) download

(1) Overview

It is a VESA 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”.

(2) Equipment

- Since embedded EDID data is used, EDID download JIG,

HDMI cable and D-sub cable are not need.

- Adjust remote control

(3) Download method

1) Press ADJ key on the Adjustment remote control, then

select “12.EDID D/L”, By pressing Enter key, enter EDID

D/L menu.

2) Select [Start] button by pressing Enter key, HDMI1/

HDMI2/ HDMI3/ HDMI4/ RGB are Writing and display

OK or NG.

(4) EDID DATA

AHDMI

ARGB

CMD 1 CMD 2 Data 0

AA00

CMD 1 CMD 2 Data 0

CI10

CMD 1 CMD 2 Data 0

AA00

CMD 1 CMD 2 Data 0

CI20

CI+ key Value

H-freq(kHz) V-freq.(Hz)

Transmission [A][I][ ][Set ID][ ][20][Cr] [O][K][X] or [NG]

0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F

0x00 00 FF FF FF FF FF FF 00 1E 6D ⓐⓑ

0x02 0F 50 54 A1 08 00 71 40 81 C0 81 0 81 80 95 0

0x03 90 40 A9 C0 B3 00 02 3A 80 18 71 38 2D 40 58 2C

0x04 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30

0x05 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39

0x06 3F 1F 52 10 00 0A 20 20 20 20 20 20 ⓓ

0x07 ⓓ01 ⓔ1

0x00 02 03 37 F1 4E 10 1F 84 13 05 14 03 02 12 20 21

0x01 22 15 01 26 15 07 50 09 57 07 ⓕ

0x02 ⓕ

0x03 ⓕE3 05 03 01 01 1D 80 18 71 1C 16 20 58

0x04 2C 25 00 A0 5A 00 00 00 9E 01 1D 00 80 51 D0 1A

0x05 20 6E 88 55 00 A0 5A 00 00 00 1A 02 3A 80 18 71

0x06 38 2D 40 58 2C 45 00 A0 5A 00 00 00 1E 00 00 00

0x07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ⓔ2

0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F

0x00 0 FF FF FF FF FF FF 0 1E 6D ⓐⓑ

0x02 0F 50 54 A1 08 00 71 40 81 C0 81 00 81 80 95 00

0x03 90 40 A9 C0 B3 00 02 3A 80 18 71 38 2D 40 58 2C

0x04 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30

0x05 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A

0x06 3E 1E 53 10 00 0A 20 20 20 20 20 20 ⓓ

0x07 ⓓ0ⓔ3

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