9Installation3M™ Digital Projector X56© 3M 2011. All Rights Reserved.2. Set the lens position to the upper limit with the VERTICAL adjuster.NOTE • If it is not set to the upper limit, the image of Set B may notsuperimpose well enough to the image of Set A.• Perform the MIRROR setting first if necessary as it may change the imageposition. (Operator's Guide → SETUP menu)• HORIZONTAL adjuster is recommended to be set near the center position.3. Adjust the image of Set A to fit the screen with the VERTICAL adjuster,HORIZONTAL adjuster, ZOOM ring and FOCUS ring. (Operator’s Guide →Displaying the picture)Adjust the image position using KEYSTONE and PERFECT FIT if necessary.(Operator's Guide → EASY MENU or SETUP menu)NOTE • Do not adjust ZOOM ring to the widest position, otherwise theimage of Set B may not superimpose well enough to the image of Set A. Fineadjusting the image position of Set B electrically does not increase its imagesize. Use the ZOOM ring to adjust the image size of Set B to slightly largerthan Set A.• KEYSTONE cannot be operated when PERFECT FIT is in use. To adjustthe image using both KEYSTONE and PERFECT FIT, adjust KEYSTONEfirst.• If you are using Simple Stack, go to 2.3 Installation of the second projector(Set B). (11)(continued on next page)Setting up Set A1. Turn on Set A.4. Display the menu with the MENU button. (Operator's Guide → Using themenu function)5. Use the ▲/▼/◄/► buttons to go into the following menu.ADVANCED MENU > OPTION> SERVICE > COMMUNICATION> STACKSTACK menu will appear on screen.(Operator's Guide → OPTION menu)