Acer P3250 Acer P1350 and P3250 Projector Series Service Guide - Page 67

Inspection item Criteria - Adjust Resync or Frequency/Tracking/H. Position/V. Position to the inner screen. - Eliminate visul wavy noise by Rsync, Frequency or Tracking selction. - Check if there is noise on the screen. - Horizontal and vertical position of the vedio should be adjustable to the screen frame. - If there is noise on the screen, the product is considered as faliure product. - If there is noise on the screen, use auto or manual "frequency" function or "tracking" function to adjust the screen. - The PC mode functionally sure be workable include support format with frequency and auto detected functional will be workable. 2. Light Leak Procedure Inspection item Criteria - Test equipment: video generator. - Test signal: analog 1024x768@60Hz - Test Pattern: gray 10 patterns - Check if the light leaks. * Light leak on reflective edge, eyecatcher, bond- wires and exposed metal. - Light leak check. - Bright blemish (dirty). - The bright blemish is unacceptable when it is more than four under gray 10 pattern. - Ref. below table Note: The defect criteria follows TI specification. Gray 10 3. Blemish (Dark) Procedure - Test equipment: video generator. - Test signal: analog 1024x768@60Hz. - Test Pattern: blue 60 Inspection item Criteria - Dark blemish check.(dirty) - The bright blemish is unacceptable when it is Blue 60 P3150/P3250/P3150 Refresh/P3250 Refresh Confidential 4-5