Acer P3250 Refresh Service Manual page 74

Display Data Channel (DDC)
Acoustic
2. Check points for exterior and print pattern
Check item
Text & Pattern
Exterior
Buttons
Focus ring
Logo
Screw
Pedestal
Lamp Cover
Plastic Parts
Safety or warning
label
Connector
- The purpose of the DDC test is to verify the DDC1/DDC2B
operation of the projector and to verify Plug & Play function.
- High pitch sound from cooling fan and color wheel is unac-
ceptable.
Check point
Missing letters & pattern or blurry prints are unacceptable.
Dirt, scrape, water ripples and uneven color are unacceptable.
Stuck buttons are unacceptable.
Focus ring is functioning smoothly.
Missing logo, missing prints and blurry prints are unacceptable
All screw sure be fixed and in right type.
Well-functioned
It should be locked in the correct place.
All plastic parts can not be brocken and damaged.
All safety and warning label should be visible, including all contents.
All interface connector should be complete and workable.
P3150/P3250/P3150 Refresh/P3250 Refresh
Confidential
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