BenQ PB8250 Service Manual page 11

Step 2: Check specified screen sizes and zoom positions
Step 3: Use Chart1 to measure Lateral Color for whole screen with Pattern 5 and record the
maximum number
Example if 0.6 pixel lateral color:
A20. LAMP LIFETIME TEST PROCEDURE
50% lamp brightness maintenance under 3.5hr ON, 0.5hr OFF cycling test
A21. LIGHT LEAKAGE SPECIFICATION
Test under tele 47" to 60"
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