Sylvania LC320SS9 – How to enter Service mode – Exploded view – Initialization – SMPS and BL inverter schematic - 32″ COLOR LCD TELEVISION

How to enter the service mode, how to initialize, How to adjust the white balance adjustment, SMPS, Back-light inverter and Audio output section circuit diagram, Exploded view - Sylvania LC320S9 LCD TV

HOW TO INITIALIZE THE LCD TELEVISION
1. Turn the power on.
2. To enter the service mode, press the service button on the service remote control unit.
3. Press [INFO] button on the service 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 complete.
- To cancel the service mode, press [POWER] button on the remote control unit.

How to make the Service remote control unit:
Cut “A” portion of the attached remote control unit as shown.

To set up the service mode

1. Use the service remote control unit.

2. Turn the power on.

3. Press the service button on the service remote control unit. The following screen appears.

Purity Check

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 pressing [7] button on the service remote control unit, the display changes.

VCOM Adjustment.

1. Operate the unit for more than 20 minutes.
2. Set the color analyzer and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
3. Enter the Service mode.
4. Press [2] button on the service remote control unit.
5. Press [CH Up|Dn] buttons on the service remote control unit so that the color analyzer value becomes minimum.

SMPS schematic (Click on the pictures to magnify)

Back-light inverter schematic

Audio output schematic

Exploded view

White Balance Adjustment

To mix red, green and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.

Operate the unit for more than 20 minutes.
2. Input the White Raster(70%=70IRE, 25%=25IRE)

3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
4. Enter the Service mode. Press [VOL. n] button on the service remote control unit and select “C/D” mode.

5. [CUTOFF]
Press [3] button to select “COB” for Blue Cutoff adjustment. Press [1] button to select “COR” for Red Cutoff adjustment.
[DRIVE]
Press [6] button to select “DB” for Blue Drive adjustment. Press [4] button to select “DR” for Red Drive adjustment.
6. In each color mode, press [CH Up|Dn] buttons to adjust the values of color.
7. Adjust Cutoff and Drive so that the color temperature becomes 12000°K (x= 0.272 / y=0.278 ±0.005).