DOWNLOAD LG 47LV375H (CHASSIS:LD03X) Service Manual ↓ Size: 4.69 MB | Pages: 39 in PDF or view online for FREE

- 6 -

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.

1280*768 47.78 59.87

79.5 

WXGA 

 

6.

1360*768 47.72

59.8

84.75 

WXGA

7.

1280*1024 63.595  60.0 

108.875

SXGA

FHD 

model

8.

1920*1080 66.587

59.93

138.625  WUXGA

FHD 

model

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.

1280*768 47.78

59.87

79.5

WXGA  HDCP

6.

1360*768 47.72 59.8 84.75

WXGA  HDCP

7.

1280*1024 63.595

60.0  108.875  SXGA

HDCP/FHD 

model

8.

1920*1080 67.5 

60.00

138.625  WUXGA

HDCP/FHD 

model

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

- 7 -

This specification sheet is applied to all of the LCD TV with
LD03X chassis.

(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.

(1) Overview

ADC adjustment is needed to find the optimum black level
and gain in Analog-to-Digital device and to compensate
RGB deviation.

(2) Equipment & Condition

1) Jig (RS-232C protocol)
2) MSPG-925 Series Pattern Generator(MSPG-925FA,

pattern - 65)

- Resolution : 480i Comp1

1080p Comp1
1080p 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 40  [Change input source to Component1(No action)]
- ad 00 10  [Adjust 480i Comp1]
- ad 00 10  [Adjust 1080p Comp1]
- xb 00 60  [Change input source to RGB(No action)]
- ad 00 10  [Adjust 1080p RGB]
- ad 00 90  End adj.

(1) Equipment & Condition

- Play file: Serial.exe
- MAC Address edit
- Input Start / End MAC address 

(2) Download method

1) Communication Prot connection

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

 

PCBA 

PC(RS-232C)

 

RS-232C Po rt

 

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 : component1 480i, RGB 1080p)

ad 00 20 

000000000000000000000000007c007b006dx

(main)

(main : component1 1080p)

ad 00 30

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

- 8 -

2) MAC Address Download

- Com 1,2,3,4 and 115200(Baud rate)
- Click “Port connection” button(1).

- Click “Load” button(2) for MAC Address write.
- Click “MAC Address write” button(3)
- Check the OK Or NG.

(1) Equipment & Condition

A

Each other connection to LAN Port of IP Hub and Jig

(2) LAN inspection solution

A

LAN Port connection with PCB

A

Network setting at MENU Mode of Installation Menu

- “In-start” key input -> “menu” key input -> Installation

Menu

- Network Setup -> Network Setting --> Press “Enter” ->

IP Auto Setting -> OK

A

setting automatic IP

A

Setting state confirmation

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

MAC Address.

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.

(1) Model name & Serial number D/L

A

Press “Power on” key of service remote control.
(Baud rate : 115200 bps)

A

Connect RS232 Signal Cable to RS-232 Jack.

A

Write Serial number by use RS-232.

A

Must 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 Adjustment remote control.
b. Go to the menu ‘5.Model Number D/L’ like below photo.
c. Input the Factory model name(ex 42LD450-ZA) or Serial

number like photo.

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

displayed. (ex 42LE7500-ZA)

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

model displayed. (ex 42LE7500-ZA)

Commercial MENU

SET

PC

- 9 -

- Jig(Speaker out JIG, Speaker out control Jig) or Oscilloscope
- Power only mode

1) Connect the External Speaker : Check the sound.
2) Press the “+” key on the control Jig : Check the Max output.
3) Press the “-” key on the control Jig : Check the Min output.

Connect oscilloscope, you can see this waveform.

- Jig (commercial check JIG) 
- Special 232C Cable for commercial check Jig
- Power only mode

1) Connect each other RS232C port on the Commercial Check

JIG.

2) Press RED Color key on Service remote control.
3) Check the LED of jig board.

- +12V / +5V LED (OK condition: Turn On)
- IR LED (OK condition: blinking)

1) Connect mini jig on RS232c port.
2) Press RED Color key on Service remote control.
3) Check the LED of mini jig.

1) Connect the RF Cable.
2) Turn to the Pro:Idiom channel (No. 333).
3) Check the video & sound.
** Only displayed at “POWER ONLY” mode

1) Check the LED Clock in Power only mode.

Recommended Input Signal
: RF, 1 KHz, Sine wave