Service Mode, Firmware update, Initialization, Purity check, VCOM adjustment – SMPS schematic – Universal remote control set-up codes - Sylvania, Emerson and Manavox 32 inch LCD TVs.
Applicable toMAGNAVOX 2MF301B/F7 (Serial No.: DS1, DS2)
EMERSON LC320EM2 (Serial No.: DS1, DS3)
SYLVANIA LC320SS2 (Serial No.: DS1, DS2)
32MF301B/F7 MAGNAVOX (Serial No.: TH1)
LC320SS2 SYLVANIA (Serial No.: TH1)
LC320EM2 EMERSON (Serial No.: TH1)
Service
mode
1. Turn the power on.
2. Press [MENU] button to display Setup menu.
3. Select “Features”.
4. Select “Current Software Info”.
5. Press [0], [4], [2], [5], [7], [4] and [INFO] buttons on the remote control unit in this order. The following screen appears.
1. Turn the power on.
2. Press [MENU] button to display Setup menu.
3. Select “Features”.
4. Select “Current Software Info”.
5. Press [0], [4], [2], [5], [7], [4] and [INFO] buttons on the remote control unit in this order. The following screen appears.
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.
VCOM Adjustment
1. Operate the unit for more than 60 minutes.
2. Set the color analyzer at the zero point calibration and 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.
3. Enter the Service mode.
4. Press [3] button on the remote control unit.
5. Press [CHANNEL UP/DOWN] buttons on the remote control unit so that the color analyzer value becomes minimum.
6. To cancel or to exit from the VCOM Adjustment, press [CH RETURN] or [PREV CH] button.
Power supply and back light inverter board circuit diagram
CAUTION: Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
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.
VCOM Adjustment
1. Operate the unit for more than 60 minutes.
2. Set the color analyzer at the zero point calibration and 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.
3. Enter the Service mode.
4. Press [3] button on the remote control unit.
5. Press [CHANNEL UP/DOWN] buttons on the remote control unit so that the color analyzer value becomes minimum.
6. To cancel or to exit from the VCOM Adjustment, press [CH RETURN] or [PREV CH] button.
Power supply and back light inverter board circuit diagram
CAUTION: Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
Click on the schematics to zoom in
White
Balance Adjustment
The White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.
Purpose: To mix red and blue beams correctly for pure white.
Symptom of Maladjustment: White becomes bluish or reddish.
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 on the screen.
4. Set the Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
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 on the screen.)
6. Press [MENU] button. The internal Raster signal appears on the screen. (“Internal (Single)” appears on 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 on 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 on 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 on 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.
HOW TO 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 initializing is completed.
FIRMWARE RENEWAL MODE
Note: There are two states (the User Upgrade and the Factory Upgrade) in firmware update.
User Upgrade: Upgrade the firmware only. The setting values are not initialized.
Factory Upgrade (Firmware upgrade): Upgrade the firmware and initialize the setting values.
Factory Upgrade (Flash upgrade): Upgrade the firmware and initialize the setting values along with the setting data adjusted at the factory such as White Balance, etc.
The identification of User Upgrade and Factory Upgrade are done by the filename.
1. Turn the power off and unplug the AC Cord.
2. Insert the USB storage device to the USB port.
3. Plug the AC cord in the wall outlet and turn the power on.
4. The update will start and the status will appear on the screen.
Note: If this status screen isn’t displayed, repeat from step 1.
5. When the firmware update is completed, the status will appear on the screen.
Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
Note: When the Factory Upgrade is used, after restarting TV, shift to initial screen menu in service mode. "INITIALIZED" will appear on the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is completed.
Universal remote control set-up codes:
Magnavox: 0018 0042 0049 0101 0152 0680
Emerson: 0004 0042 0049 0065 0101 0113 0119 0145 0152 0166 0191 0214 0215 0225 0324 0378 0421 0456 0460 0604 0611 0654
Sylvania: 0392
The White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.
Purpose: To mix red and blue beams correctly for pure white.
Symptom of Maladjustment: White becomes bluish or reddish.
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 on the screen.
4. Set the Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
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 on the screen.)
6. Press [MENU] button. The internal Raster signal appears on the screen. (“Internal (Single)” appears on 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 on 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 on 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 on 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.
HOW TO 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 initializing is completed.
FIRMWARE RENEWAL MODE
Note: There are two states (the User Upgrade and the Factory Upgrade) in firmware update.
User Upgrade: Upgrade the firmware only. The setting values are not initialized.
Factory Upgrade (Firmware upgrade): Upgrade the firmware and initialize the setting values.
Factory Upgrade (Flash upgrade): Upgrade the firmware and initialize the setting values along with the setting data adjusted at the factory such as White Balance, etc.
The identification of User Upgrade and Factory Upgrade are done by the filename.
1. Turn the power off and unplug the AC Cord.
2. Insert the USB storage device to the USB port.
3. Plug the AC cord in the wall outlet and turn the power on.
4. The update will start and the status will appear on the screen.
Note: If this status screen isn’t displayed, repeat from step 1.
5. When the firmware update is completed, the status will appear on the screen.
Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
Note: When the Factory Upgrade is used, after restarting TV, shift to initial screen menu in service mode. "INITIALIZED" will appear on the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is completed.
Universal remote control set-up codes:
Magnavox: 0018 0042 0049 0101 0152 0680
Emerson: 0004 0042 0049 0065 0101 0113 0119 0145 0152 0166 0191 0214 0215 0225 0324 0378 0421 0456 0460 0604 0611 0654
Sylvania: 0392
