Calibration - Acer K130 Service Manual

Inspection item
Criteria
Note: The format of test pattern refer to " Multimedia Format Supported" in
chapter 1.

4-6 Calibration

1.ADC Calibration
Note: - To adjust the white/black value of VGA signal,after replacing main
board or upgrading firmware, the "ADC calibration" is needed.
Procedure
Note:
- Select photoes,video or audio to play the test pattern
in USB flash disc.
- Check if any abnormal color, any noise on
the screen.
- Check the sound from speaker.
- The video is played smoothly and the voice
sounds normal.
- Test equipment: SD Card (include test pattern)
- Test Pattern: 16 Grey
- Turn on the projector and plug SD Card into the
projector.
- Press "source" button enter multimedia mode.
- Select "photoes" to shown 16 Grey which stored
in SD card.
- Enter into service mode, Choose "Analog Settings",
Then choose "ADC Calibration", press "menu"
button to access "ADC Calibration" for correction.
When"ADC Calibration" appears white words, it
means "ADC Calibration" is OK.
- Choose "Exit" to exit the Service mode.
- Calibration pattern should be in full screen mode.
K130
Confidential
16 Grey
4-8