AOC LE32H057D 31.5″LCD TV – How to enter service mode – white balance adjustment – Power and Audio output circuit diagram

To enter into the factory mode (Service Mode)
Press the “MENU” key and then press number key 1  9  9  9  Enter, It will achieve the factory mode. Take the other model picture for example 

715G4078P01W22003H – power board (SMPS)

Audio output schematic

White-Balance Adjustment

Approximately 60 minutes should be allowed for warm up before proceeding white balance adjustment.

Before started adjust white balance, please set the CA210 Channel to 05 Channel and set it’s mode to x, y, Lv mode.

How to setting the CA210 channel, you can reference to CA210 user guide or simple use the “Memory CH” up or down to set the channel to 05 channel, and use the “Mode” key to set the mode to x, y, Lv.

In the White Balance you can adjust 3 items.
SCALER GAIN  R, G, B   >   R, G, B Gain adjust

Adjust AV Source

1. Set the pattern generator to timing 307 or PAL-M timing. And Select the item of Current Source and select composite Source

2. Switch the Ca210 to x, y, Lv-mode (with press “MODE” button)

3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)

4. The LCD-indicator on Ca210 will show x =285, y =293, Lv can adjust to More than 350cd/cm2 (at full white).

5. Enter the item “Color Temp” to select Normal to adjust.

6. Use the item R Gain, G Gain or B Gain to adjust white balance: use 80 IRE (Pattern 141) signal, and adjust the white balance, until the Ca210 show x =285, y =293.

Adjust HDMI Source

1. Set the pattern generator to timing 347 or HDMI-720P@60Hz timing. And Select the item of Current Source and select HDMI Source

2. Switch the Ca210 to x, y, Lv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show x =285, y =293, Lv can adjust to More than 350cd/cm2 (at full white).
5. Enter the item “Color Temp” to select Normal to adjust.
6. Use the item R Gain, G Gain or B Gain to adjust white balance: use 80 IRE (Pattern 141) signal, and adjust the white balance, until the Ca210 show x =285, y =293.

Adjust VGA Source
1. Set the pattern generator to timing 137 or 1024*768@60Hz timing. And Select the item of Current Source and
select VGA Source
2. Switch the Ca210 to x, y, Lv -mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show x =285, y =293, Lv can adjust to More than 350cd/cm2 (at full white).
5. Enter the item “Color Temp” to select Normal to adjust.
6. Use the item R Gain, G Gain or B Gain to adjust white balance: use 80 IRE (Pattern 141) signal, and adjust the white balance, until the Ca210 show x =285, y =293.

Adjust Component Source

1. Set the pattern generator to timing 314 or HDTV-720p@60Hz timing. And Select the item of Current Source and select Component Source

2. Switch the Ca210 to x, y, Lv -mode (with press “MODE” button)

3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)

4. The LCD-indicator on Ca210 will show x =285, y =293, Lv can adjust to More than 350cd/cm2 (at full white).

5. Enter the item “Color Temp” to select Normal to adjust.

6. Use the item R Gain, G Gain or B Gain to adjust white balance: use 80 IRE (Pattern 141) signal, and adjust the white balance, until the Ca210 show x =285, y =293.

7. Enter the item “Color Temp” to select Cool to adjust.

8. Use the item R Gain, G Gain or B Gain to adjust white balance: use 80 IRE (Pattern 141) signal, and adjust the white balance, until the Ca210 show x =272, y =278.

9. Enter the item “Color Temp” to select Warm to adjust.

10. Use the item R Gain, G Gain or B Gain to adjust white balance: use 80 IRE (Pattern 141) signal, and adjust the white balance, until the Ca210 show x =313, y =329