ViewSonic VA502mb-1 Service Manual page 28

Full White Pattern (Figure 7)
Black-White Pattern (Figure 9)
4.3 Function Test and Alignment Procedure
All Modes Reset
You should do "All Mode Reset" (Refer to Chapter III-3. Hot Keys for Function Controls)
first. This action will allow you to erase all end-user's settings and restore the factory
defaults.
Auto Image Adjust
Please select and enter "Auto Image Adjust" function on Main Menu to see if it is workable.
The "Auto Image Adjust" function is aimed to offer a better screen quality by built-in ASIC.
For optimum screen quality, the user has to adjust each function manually.
Firmware
Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls)
- Make sure the F/W is the latest version.
DDC
Test Pattern: EDID program
Make sure it can pass test program.
ViewSonic Corporation
Dark Screen Pattern (Figure 8)
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VA502mb-1