Others - Optoma HD20 Service Manual

4-11 Others

1. Functional Inspection
Keypad button
General
Factory Default
Display Size
Display Data Channel (DDC)
Acoustic
2. Chec�� points for exterior and print pattern
Check item
Text & Pattern
Exterior
Focus ring
Logo
Screw
Pedestal
Lamp Cover
Plastic Parts
Safety or warning label All safety and warning labels should be visible, including all contents.
Connector
- All keypad buttons must operate smoothly.
- All OSD functions must be checked for functionality. When OSD
menu is displayed, there shall be no visible peaking, ringing,
streaking, or smearing artifacts on the screen.
- The factory settings (with appropriate centering, size, geometry
distortion, etc.) shall be displayed upon "Recall" is selected from
OSD.
- All preset modes shall expand to full screen size using OSD
Horizontal and Vertical Size controls.
- 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
unacceptable.
Check point
Missing letters & pattern or blurry prints are unacceptable.
Dirt, scrape, water ripples and uneven color are unacceptable.
Focus ring is functioning smoothly.
Missing logo, missing prints and blurry prints are unacceptable
All screws sure be fixed and in right type.
Well-functioned
It should be locked in the correct place.
All plastic parts can not be broken and damaged.
All interface connectors should be complete and workable.
HD20/HD200X/HD2200/HD20LV/HD21/HD23
Confidential
4-12