23M™ Digital Projector X56© 3M 2011. All Rights Reserved. 1. Introduction ........................31.1 Entries and graphicalsymbols explanation ........................ 31.2 Important safety instruction .......... 3Instant Stack feature ............................ 3General installation .............................. 51.3 Basic informationand preparations ............................. 6Instant Stack ........................................ 6Intellectual Stack and Simple Stack ..... 6Remote control for Intellectual Stackand Simple Stack ............................. 6Installation styles ................................. 6Tentative terms for the two projectors .. 62. Installation ..........................72.1 Preparing for Intellectual Stack..... 72.2 Installingthe first projector (Set A) ................ 8Removing pocket caps ........................ 8Preparing elevator feet ........................ 8Deciding installation position ............... 8Setting up Set A ................................... 92.3 Installingthe second projector (Set B) ........ 11Stacking the projectors ...................... 11Connecting projectors ........................ 11Setting up Set B ................................. 122.4 Confirming Mainand Sub settings ............................ 142.5 Fine adjustingimage position ............................... 15For Intellectual Stack users ............... 15For Simple Stack users ...................... 163. STACK menu settings ......173.1 Displaying STACK menu ............ 173.2 Selecting Main, Sub or off .......... 183.3 Selecting lamp operation mode .. 193.4 Selecting lamp switching mode .. 213.5 Selecting input source for Sub.... 223.6 Exiting IntellectualStack menu ................................... 23STACK menu ..................................... 23Dialog from STACK menu .................. 233.7 Important informationfor Intellectual Stack ...................... 244. Connecting cables ...........274.1 Connecting an RS-232C cable ... 274.2 Connecting signal cables............ 28Inputting image from Main to Sub ...... 28Inputting imageto Sub and Main individually ........... 285. Setting input portsusing menu .........................295.1 Preparing for menu operations ... 295.2 Checking Main projector'soperating status ............................. 295.3 Starting up Main projector .......... 305.4 Setting the menu ........................ 31Inputting image from Main to Sub- Computer signal ........................... 31Inputting image from Main to Sub- Video signal(either component or video) ........... 32Inputting image toSub and Main individually ............... 326. Restrictionson Schedule function ........347. Troubleshooting ...............36Contents