DOWNLOAD LG 42LG350H (CHASSIS:LD85F) Service Manual ↓ Size: 6.9 MB | Pages: 39 in PDF or view online for FREE

- 9 -

This specification sheet is applied to all of the LCD TV with
LD85F chassis.

1) The adjustment is according to the order which is

designated and which must be followed, according to the
plan which can be changed only on agreeing.

2) Power Adjustment: Free Voltage
3) Magnetic Field Condition: Nil.
4) Input signal Unit: Product Specification Standard
5) Reserve after operation: Above 5 Minutes (Heat Run)

Temperature : at 25±5ºC 
Relative humidity : 65±10%
Input voltage : 220V, 60Hz

6) Adjustment equipments: Color Analyzer (CA-210 or CA-

110), Pattern Generator (MSPG-925 or MSPG-1025), DDC
Adjustment Jig equipment, Service remote control.

7) Don’t push the “IN STOP KEY” after completing the

function inspection.

* APC - After Manual-Insult, executing APC

1) Execute ISP program “Mstar ISP Utility” and then click

“Config” tab.

2) Set as below, and then click “Auto Detect” and check “OK”

message. If display “Error”, Check connect computer, jig
and set.

3) Click “Connect” tab. If display “Can’t”, Check connect

computer, jig, and set.

4) Click “Read” tab, and then load download file(XXXX.bin) by

clicking “Read”.

5) Click “Auto” tab and set as below
6) Click “Run”.
7) After downloading, check “OK” message.  

1) Put the USB Stick to the USB socket.

2) Automatically detecting update file in USB Stick

- If your downloaded program version in USB Stick is Low,

it didn’t work. But your downloaded version is High, USB
data is automatically detecting.

(1)

(3)

(2)

 OK

Please Check Speed :
To us speed between from 200 KHz
to 400 KHz

(4)

filexxx.bin

(5)

(7) ........ OK

(6)

filexxx.bin

U SB  Po r t 

3) Show the message “Copying files from memory”.

4) Updating is staring.

5) Finishing the version updating, you have to put out USB

stick and “AC Power” off.

6) After putting “AC Power” on and check updated version on

your TV.

1) Push "IN-START" key in service remote control.
2) Select "MODEL SELECT" and push “OK” button.
3) Go to “INCH” and choice proper inch.
4) TV  power turn off and on.
5) Completed Tool option

1) Auto RGB Gain/Offset Adjustment

- Convert to PC in Input-source
- Signal equipment displays

Output Voltage : 700 mVp-p
Impress Resolution XGA (1024 x 768 @ 60Hz)
Model : 60    in Pattern Generator
Pattern : 54  in Pattern Generator (MSPG-925, MSPG-
1025 Series)
[1/2 W.B Horizontal (Refer below picture)

- Adjust by commanding AUTO_COLOR_ADJUST.

2) Confirmation

- We confirm whether “0xAA (RGB)” address of

EEPROM “0xA2” is “0xAA” or not.

- If “0xAA (RGB)” address of EEPROM “0xA2” isn’t

“0xAA”, we adjust once more

- We can confirm the ADC values from “0xA4~0XA9

(RGB)” addresses in a page “0xA2”

* Manual ADC process using Service Remote control.

After enter Service Mode by pushing “ADJ” key,
execute “ADC Adjust” by pushing “

G

” key at “ADC

CALIBRATION : RGB-PC”.

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<Fig. 1> Adjustment pattern(PC)

- 11 -

1) Component Gain/Offset Adjustment

- Convert to Component in Input-source
- Signal equipment displays

<MSPG-925 Series>

MODEL : 209   in Pattern Generator (480i Mode)
Pattern : 65   in Pattern Generator
MODEL : 223   in Pattern Generator (1080i Mode)
Pattern : 65   in Pattern Generator

<MSPG-1025 Series>

Model : 321   in Pattern Generator (480i Mode)
Pattern: 65   in Pattern Generator
Model : 327   in Pattern Generator (1080i Mode)
Pattern: 65   in Pattern Generator

- Adjust by commanding AUTO_COLOR_ADJUST.

2) Confirmation

- We confirm whether “0xB3 (480i)/ 0xBC (1080i)”

address of EEPROM “0xA2” is “0xAA” or not.

- If “0xB3 (480i)/0xBC(1080i)” address of EEPROM

“0xA2” isn’t “0xAA”, we adjust once more.

- We can confirm the ADC values from “0xAD~0XB2

(480i)/0XB6~BB (1080i)” addresses in a page “0xA2”.

* Manual ADC process using Service Remote control.

After enter Service Mode by pushing “ADJ” key,
execute “ADC Adjust” by pushing “

G

” key at “ADC

CALIBRATION : COMPONENT”.

480i Mode

1080i Mode

- Check Input and Signal items. (cf. work instructions) 

1) TV
2) AV (SCART/CVBS)
3) COMPONENT (480i)
4) RGB (PC : 1024 x 768 @ 60hz)
5) HDMI 1,2
6) PC Audio In
7) RJP
8) LED Clock (check with Real time clock)
9) Alarm Clock
10) Ext Speaker (1W/MONO)
11) Ext 5V/1A or 12V/1A (is different as to BOM option)
* Display and Sound check is executed by remote control.

1) Set the power supply switch as shown in the below picture.
2) Turn only the #5 switch on (Up position)
3) Use the RJ-45 cable to connect the TV and JIG.

4) Enter the IN-START mode, and select “RJP Pin Check”.
5) The check result is displayed after 1~2 seconds.

<Fig. 2> Adjustment pattern(COMPONENT)

 

1

 

2

 

3  

(1) W/B Equipment condition

CA210: CH 9, Test signal: Inner pattern (85 IRE)

(2) Above 5 minutes H/run in the inner pattern. (“power on”

key of adjust remote control) 

(3) 15  Pin D-Sub Jack is connected to the Auto W/B

equipment.

(4) Adjust Process will start by execute I2C Command (Inner

pattern (0xF3, 0xFF).

(5) Adjust Process will finish by execute I2C Command (Inner
pattern (Inner pattern (0xF3,0x00)).

** Caution ** 
Color Temperature: COOL, Medium, Warm
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.

* Manual W/B process using adjusts Remote control. 

- After enter Service Mode by pushing “ADJ” key, enter

White Pattern off of service mode, and change off -> on.

- Enter “W/B ADJUST” by pushing “

G

” key at “3.W/B

ADJUST”. 

* After done all adjustments, Press “In-start” button and

compare Tool option and Area option value with its BOM, if it
is correctly same then unplug the AC cable.
If it is not same, then correct it same with BOM and unplug
AC cable.
For correct it to the model’s module from factory JIG model.

* Don’t push The “IN STOP KEY” after completing the function

inspection.

- Connect D-sub Signal Cable to D-Sub Jack.
- Write EDID DATA to EEPROM (24C02) by using DDC2B

protocol.

- Check whether written EDID data is correct or not.

- Connect HDMI Signal Cable to HDMI Jack.
- Write EDID DATA to EEPROM(24C02) by using DDC2B

protocol.

- Check whether written EDID data is correct or not.

* DDC EDID Write is available only ‘Power Only’ Mode.

- Press “Power on” key of service remocon. (Baud rate :

115200 bps)

- Connect RS232 Signal Cable to RS-232 Jack.
- Write Serial number by use RS-232.
- Must check the serial number at the Diagnostics of SET UP

menu. (Refer to below).

(1) RGB 128Byte

(2) DIGITAL DATA(HDMI-1) 256Byte

(3) DIGITAL DATA(HDMI-2) 256Byte

1) All Data : HEXA Value
2) Changeable Data :

A. Serial No : Controlled / Data:01
B. Week : Controlled / Data:00
C. Year : Controlled

- 12 -

Color

Cool

11,000

ºK X=0.276(±0.002)

<Test Signal>

Temperature

Y=0.283(±0.002)

Inner pattern

Medium 983000 ºK X=0.295(±0.002)

(216Gray,85 IRE)

Y=0.293(±0.002)

Warm

6,500

ºK X=0.313(±0.002)

Y=0.329(±0.002)

A

B

C

A

B

C