ViewSonic VS11856 Pro8100-1 Service Manual page 69

(9) Keystone calibration procedures
1. Put the projector onto a platform,and make sure the
projector feet are all adjusted close to the Bottom cover
maximumly and steadily.
2. turn on the projector.
3. It can take a minute for the image to achieve full brightness.
Press the direction keypad following the actions below:
Up twice,down twice, left once, right once, left once, right
once(▲▲▼▼◄►◄►),press the MENU button, Enter the
engineer mode.
4. Move down the color bar to "Keystone 00 Get" item, Press
"enter" button. Keystone calibration procedures completely.
(10)ADC adjustment
The ADC Calibration adjustment must use the dedicated device: Pattern Generator- Quantum
Data 802B.
1. Turn on the power then connect the PC signal cable. Set the generator format as DMT1060,
image as"W100B0", as below.
2.It can take a minute for the image to achieve full brightness. Press
the direction keypad following the actions below:
Up twice,down twice, left once, right once, left once, right
once(▲▲▼▼◄►◄►),press the MENU button, Enter the engineer
mode.
3.Choose the "ADC Calibration", press right key to conduct ADC
calibration . do not go to next step until the image appears again, or it
should be re-calibrated .
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PRO8100-1