Vivitek DH268, Service Manual

Page: 39 / 69

37
32 Gray Level
Checking Item: Color Gradation
•32 level of gray level color should be distinguishable and no defection.
FOCUS
• Use to evaluate focus sharpness and uniformity.
• Focus on the center icon. Then adjust focus to achieve best overall focus.
• Verify all icons have clear resolution and white space can be seen between the
green lines.
• Zoom to full Tele (small image) and verify all icons have clear resolution and white
space can be seen between the green lines.
HDMI
I/O port HDMI
Test Equipment
HDMI source device, standard Pattern generator or DVD player
Criteria
No apparent color deviation on the projected image