-42-Optical AdjustmentsWARNING : USE UV RADIATION EYE AND SKIN PRO-TECTION DURING SERVICINGCAUTION: To prevent suffer of UV radiation, thoseadjustment must be completed within 25minutes.CAUTION:When adjusting the optical components, do not insert any materials into the optical block for blocking the light. Or theoptical block may be damaged by overheating or scratching the parts.To select the internal test pattern1 Press the MENU button.2 Select the "Test pattern" from the "Setting" menu.3 Press the ENTER button. The test pattern menu appears on the screen.4 Select a pattern name and press ENTER button.To cancel the test pattern, press any of the buttons.1 Each adjustment requires hex wrenches and slot screw-drivers.2 Move the projection lens position to center by pressingthe LENS button for more than 5 seconds.3 When adjusting optical components adjustments, usingStandard Zoom Lens is recommended.4 When adjusting the optical axis adjustment and contrastadjustment, use the internal test pattern. To select theinternal test pattern, see the item below.* Do not disconnect the sockets on the main board other-wise the power protection function will operate to shut-down the projector.5 These adjustments should be taken in the darkest roomto adjust precisely.CAUTION: Do not short main board with the chassis.Protect main board with necessary isolationmaterials from shorting.Before adjustmentCondenser lensadjustmentRelay lens (R)adjustmentMirror (B) adjustmentTest patternColorGraduation 1Graduation 2Graduation 3Graduation 4All whiteAll blackCross