NEC P554U - ❻ Correcting Keystone Distortion [Keystone]

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2. Projecting an Image (Basic Operation)
❻ Correcting Keystone Distortion [KEYSTONE]
Whentheprojectorisnotexactlyperpendiculartothescreen,keystonedistortionoccurs.Forcorrectingthisdistor-
tion,youcanusethe“Keystone”function,adigitaltechnologythatcanadjustforkeystone-typedistortion,resulting
inacrisp,squareimage.
Thefollowingprocedureexplainshowtousethe[KEYSTONE]screenfromthemenutocorrecttrapezoidaldistor-
tionswhentheprojectorisplaceddiagonallytothescreen.
• BeforeperformingKEYSTONEcorrection
 TheKEYSTONEcorrectionhasfourfeatures,KEYSTONEHORIZONTAL,KEYSTONEVERTICAL,PINCUSHION,and
CORNERSTONE.IfthevalueofeitherCONERSTONEorPINCUSHIONhascorrected,KEYSTONEHORIZONTAL
andKEYSTONEVERTICALaredisabled.Inthiscase,RESETthecorrectedvaluesandrestarttocorrectdistortion.
1. Press the ▼ button on the projector cabinet.
The Keystone screen will be displayed on the screen.
• PresstheKEYSTONEbuttonwhenusingtheremotecontrol.
• SeepageforPINCUSHION.
• SeepageforCORNERSTONE.
• SeepageforRESET.
[P554W/P474W/P604X/P603X]
[P554U/P474U]
2. Press the ▼buttontoselect[KEYSTONEVERTICAL]andthen
use the ◀ or ▶ so that the left and right sides of the projected
image are parallel.
* Adjust the vertical keystone distortion.
Projected area
Screen frame
3. Align the left (or right) side of the screen with the left (or right)
side of the projected image.
• Usetheshortersideoftheprojectedimageasthebase.
• Intherightexample,usetheleftsideasthebase.
Align left side