- Using the remote control, press Menu button once first , then press RECALL button five times, and you can see manufacture menu on the LCD panel.
- Press the PROG ▲/▼ button to selection the sub menu of factory menu (including F,E,UOCIII,Temp) and press the VOL ► to enter the sub menu and setting the value.
- Press the MUTE button again and again or turn off the TV, it can exit the factory menu.
- In TV mode, receive 60dB split field signal.Enter factory mode menu “UOCIII” item, press PROG ▲/▼ to select “RF AGC”, then use VOL◄/►to adjust the item until the voltage of Pin 1 of N100 to be about 2.5V±0.2V, then noise wave of the picture point disappears.
- Receive black or white signal under AV or PC mode, adjusting brightness and contrast to set the brightness to 15Nit in dark area and 90 Nit in bright area 4.5.2 Adjust white balance.
- Press MENU button once, then press RECALL button five times to enter factory menu, select “Temp” Menu.
Adjust
Red 0-100
Green 0-100
Blue 0-100
Adjusting chromaticity coordinates of black and white to fit
the requirement, or plug automatic calibration system to adjust white
calibration automatically.
TROUBLESHOOT
- Verify the state of TV set. Switch the TV on ,then verify the LED color. Red is standby state and green is working state.
- Checking Supply Power. If the color of LED is yellow, the power supply for signal board, N801 supply 5V and N802 supply 3.3V,N804、N806 supply 3.3V power (Test the PIN 2).N805 supply 2.5V(Test the PIN 2),D803 supply 8.3V,V401 and V402 supply 1.8V. All these are on main IC N401,N501.
- After turning on the power, if blank screen appears (no back light lamp), just press POWER button several times, if blank screen still there. Check if the voltage of every power supply is normal.
- Check if the crystal oscillator X501(14.318180MHz) X401(24.576MHz) oscillate or not, and oscillate frequency is right or not.
- Back light control signal (BKLON) of XS801 has high level (about 2.5V) or not. If not, check whether fault soldered or short circuit happened, 6) If back light lamp is on while there is no display, check N407 and N501’s reset circuit and the output of the oscillator to confirm the CPU and SCALER are working or not. If RGB is abnormal, check N501;If RGB is working correctly and the other channel is abnormal, check N501.
