12Installation3M™ Digital Projector X56© 3M 2011. All Rights Reserved.3. Adjust the image size and position of Set B with the ZOOM ring, VERTICALadjuster, HORIZONTAL adjuster and FOCUS ring such that the image can besuperimposed well to the image of Set A.NOTE • Fine adjustment of the image size and position thereafter withfunctions such as KEYSTONE and PERFECT FIT does not increase theimage size. It is therefore important to have the image of Set B completelyoverlapping the image of Set A.• When controlling Set B with the remote control, Set A may also respond to theremote control. It is recommended to control Set B with the control panel on Set B.• When two projectors are arranged side by side, adjust the image of Set B tosuperimpose well to the image of Set A.• If you are using Simple Stack, it is recommended to disable the remotecontrol receiving on Set B using KEY LOCK and operate using the controlpanel or a wired remote control as Set A will respond to the remote control.(Operator's Guide → OPTION menu)• If you are using Simple Stack, go to For Simple Stack users. (16)NOTE • KEYSTONE cannot be operated when PERFECT FIT is in use. Toreset both functions, reset PERFECT FIT first.• Perform the MIRROR setting first if necessary as it may change the imageposition. (Operator's Guide → SETUP menu)2. Reset the adjustment of KEYSTONE and PERFECT FIT on Set B.(Operator's Guide → EASY MENU or SETUP menu)1. Turn on Set B.NOTE • After turning on Set B, make sure the image of Set B is notsignificantly tilted compared to the image of Set A. If the image is overlytilted, rotate the elevator feet of Set B to adjust the angle such that the tilt isjust about right. Check again that there is a gap of about 1 mm between theprotrusion at the bottom of Set B and the top of Set A.Setting up Set B4. 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)(continued on next page)