Electro help: LG M1962D - How to update the software, ADC adjustment, EDID adjustment

Applied to LD93A chassis 19/20/22/23 and 27 inch LCD Monitor TV which is manufactured in TV (or Monitor) Factory or is produced on the basis of this data.

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°C ± 5°C
Relative humidity : 65 ±10%
Input voltage : 220V, 60Hz
6. Adjustment equipment: Color Analyzer (CA-210 or CA- 110), Pattern Generator (MSPG-925L or Equivalent), DDC Adjustment Jig equipment, SVC remote controller
7. Don’t push The “IN STOP KEY” after completing the function inspection.

Main PCB check process

APC - After Manual-Insult, executing APC download

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.

DOWNLOAD USB
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
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 Tool option. (explain the Tool option, next stage)

* If downloading version is more high than your TV have, TV can lost all channel data. In this case, you have to channel recover.

if all channel data is cleared, you didn’t have a DTV/ATV test on production line.

* After downloading, have to adjust TOOL OPTION again.

1. Push "ADJ" key in service remote controller

2. Select "1.Tool Option" and Push “OK” button

3. Punch in the number. (Each model has their number.)

4. Completed selecting Tool option

ADC Process

1 ADC Calibration Internal
ADC is executed automatically using internal pattern.
If ADC is executed by ADC Calibration Internal, RGB and Component is executed at the same time.
Remove the all input jack from set.
Press the ADJ KEY on R/C and enter EZ ADJUST.
Press “Power only” key of service remocon.(Baud rate : 115200 bps).
Select “3. ADC CALIBRATION Internal” by using / (CH +/-) and press ENTER.
Select “Start” and press navigation key.
ADC Calibration Internal is executed automatically.
Press EXIT key on R/C.

ADC Calibration External

( If ADC calibration had done in internal process, It doesn’t need to use this process.)

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 : 29 in Pattern Generator (MSPG-925 SERISE)

Adjustment pattern (PC )

Press the ADJ KEY and then select “2.ADC CALIBRATION

External” by using / (CH +/-) and press ENTER.

Confirmation
Confirm whether “0xAA (RGB)” address of EEPROM “0xA2” is “0xAA” or not.
If “0xAA (RGB)” address of EEPROM “0xA2” isn’t “0xAA”, adjust once more
Confirm the ADC values from “0xA4~0XA9 (RGB)” addresses in a page “0xA2”

*Manual ADC process using Service Remocon. After enter Service Mode by pushing “ADJ” key, execute “4.ADC Adjust” by pushing “Right ” key at “ADC CALIBRATION: RGB”.

2) Component Gain/Offset Adjustment
Convert to Component in Input-source
Signal equipment displays
Impress Resolution 1080i
MODEL: 223 in Pattern Generator(1080i Mode)
PATTERN: 65 in Pattern Generator(MSPG-925 SERISE)*

Press the ADJ KEY and then select “2.ADC CALIBRATION External” by using / (CH +/-) and press ENTER.

Confirmation
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 Remocon. After enter Service Mode by pushing “ADJ” key, execute “ADC Adjust” by pushing " "key at “ADC CALIBRATION :COMPONENT”. Impress Resolution 1080i.

Function Check

1) Check display and sound

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

1. TV

2. AV (SCART1/SCART2/CVBS)

3. COMPONENT (1080i)

4. RGB (PC : 1360 x 768 @ 60Hz –M1962D) (PC : 1600 x 900 @ 60Hz –M2062D) (PC : 1920 x 1080 @ 60hz –M2262D&M2362D/M2762D)

5. DVI (PC : 1360 x 768 @ 60Hz –M1962D) (PC : 1600 x 900 @ 60Hz –M2062D) (PC : 1920 x 1080 @ 60hz –M2262D&M2362D/M2762D)

6. HDMI

7. PC Audio In

* Display and Sound check is executed by Remote controller

Total Assembly line process

Adjustment Preparation

W/B Equipment condition

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

Above 5 minutes H/run in the inner pattern. (“power on” key of adjust remote control)

15 Pin D-Sub Jack is connected to the AUTO W/B EQUIPMENT

Adjust Process will start by execute I2C Command (Inner pattern (0xF3, 0xFF).
* 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. (when R/G/B Gain are all C0, it is the FULL Dynamic Range of Module)

W/B condition
Surrounding Temperature: 20 % ~ 80 %
Surrounding Temperature: 25±5 °C
warm-up Time: Under 5 Min
* 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 "Right " key at “5. 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.

DPM operation confirmations
Check if Power LED Color and Power Consumption operate as standard.
Set Input to RGB and connect D-sub cable to set
Measurement Condition: (100~240V@ 50/60Hz)
Confirm DPM operation at the state of screen without Signal
DDC EDID Write (RGB 128Byte )
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.
DDC EDID Write (DVI 128Byte )
Connect DVI-D Signal Cable to DVI Jack.
Write EDID DATA to EEPROM (24C02) by using DDC2B protocol.
Check whether written EDID data is correct or not.

DDC EDID Write (HDMI 256Byte)
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.
Serial number (RS-232C)
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)