Monday, November 09, 2015

EMERSON LE220EM3 SERVICE MODE WHITE BALANCE ADJUSTMENT AND POWER SUPPLY CIRCUIT BOARD

EMERSON LE220EM3 

LED TV 

SERVICE MODE WHITE BALANCE ADJUSTMENT  AND POWER SUPPLY CIRCUIT BOARD

How to set up the service mode
Service mode
1. Turn the power on.
2. Press [MENU] button to display Setup menu.
3. Select “Features”.
4. Select “Software Upgrade”.
5. Select “Current Software Info”.
6. Press [0], [4], [2], [5], [7], [4] and [INFO] buttons on the remote control unit in this
order. 
Purity Check Mode
This mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.
1. Enter the service mode.
2. Each time the [7] button on the remote control unit is pressed, the display changes
3. To cancel or to exit from the Purity Check Mode, press [CH RETURN] or [PREV CH] button.
The White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.
White Balance Adjustment
Purpose: To mix red and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.
ITEM
SPECIFICATION

Color temperature

x= 0.272 ± 0.002
y= 0.278 ± 0.002

Input Signal

Internal pattern
(40/80% raster)
Measurement point

Screen center

M. EQ.




CA-310 (KONICA MINOLTA
Luminance meter) or
measuring instrument as
good as CA-310.

Aging time


60min.
(Retail MODE/100IRE Raster
HDMI 1080i@60)

MODE setting of TV



Shipment setting/
Retail MODE

Ambient
temperature
25°C ± 5°C

1. Operate the unit for more than 60 minutes.
2. Enter the service mode.
3. Press [VOLUME DOWN] button three times on the remote control unit to select “Drive setting” mode.
“Drive” appears in the screen.
4. Set the color analyzer at the CHROMA mode and
zero point calibration. Bring the optical receptor
pointing at the center of the LCD-Panel.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.)
6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal (Single)” appears in the upper right of the screen
7. Press [CHANNEL UP/DOWN] buttons to adjust the color temperature becomes 12000°K (x= 0.272 / y= 0.278 ± 0.002).
8. Press [1] button to select the “HDR” for High Drive
Red adjustment (“HDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
9. If necessary, adjust the “HDB” or “HDR” again.
10. Press [6] button to select the “LDB” for Low Drive Blue adjustment (“LDB” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
11. Press [4] button to select the “LDR” for Low Drive Red adjustment (“LDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
12. If necessary, adjust the “LDB” or “LDR” again.
13. Press [VOLUME DOWN] button to shift to the
“Debugging Message” mode.
If there is no message under “[WB]” section, this adjustment completes. If “Drive settings are NG. Retry.” is displayed, repeat above steps from 5. to 12. Then check “Debugging Message” again. If “Drive settings are NG. Retry.” is displayed, replace the LCD Panel or Digital Main CBA.
14. To cancel or to exit from the White Balance Adjustment, press [CH RETURN] or [PREV CH] button.
INITIALIZE THE LCD TV
The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized.
To put the program back at the factory-default, initialize the LCD TV using the following procedure.
1. Turn the power on.
2. Enter the service mode.
# To cancel the service mode, press [POWER] button on the remote control unit.
3. Press [FREEZE] button on the remote control unit to initialize the LCD television.
4. "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initialization is completed.
Firmware Update Procedure
User Upgrade (Filename example: TVNB012_00_UF_XX91_AA.ecc)
Upgrade the firmware only. The setting values will not be initialized. The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_” at the beginning of the filename. If you want to upgrade the firmware only and leave the setting values as they are, eliminate the “FACT_” from the filename.
Update procedure
1. Turn the power on.
2. Press [MENU] button to display Menu.
3. Select “Features”.
4. Select “Software Upgrade”.
5. Select “Upgrade” to display Upgrade screen.
6. Press [OK] button to display Software Upgrade screen.
7. Select “USB” and press [OK] button.
8. Insert the USB storage device to the USB port
9. Select “Check” and press [OK] button.
10. Select “Upgrade” and press [OK] button to start software upgrade.
11. When the firmware update is completed, Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN