Hitachi CP-X4021N Instant Stack Guide - Page 7

2. Installation Before installation, read carefully Important safety instruction (3~5) for safety reason. And note the followings for proper use of the Instant Stack. ● When you use Intellectual Stack, until you set STACK MODE to SUB on one projector, both projectors can react to the remote control signal. For installation, it is recommended to operate one projector by the remote control and to operate the other by the control panel on the projector or wired remote. In this case the other projector should disable the remote control by KEY LOCK. (Operating Guide → OPTION menu) ● Even if the images of Set A and Set B are fully superimposed once, it may shift over time. Adjust the images again to superimpose the image. ● It may be happened to make a mechanical noise and degrade image quality by sympathetic vibration with the two projectors if the volume of built-in speakers is set to much higher. In this case, check the volume setting on both projectors, and lower the volume to remove such phenomena. In case the image position is shifted, adjust it again. 2.1 Preparation with powered up If you wish to use Intellectual Stack with RS-232C cable connection, the following setting must be confirmed on both of projectors. Otherwise, menus for Intellectual Stack on the projectors cannot be operated. ● STANDBY MODE in SETUP menu: NORMAL (Operating Guide → SETUP menu) ● COMMUNICATION TYPE in COMMUNICATION in SERVICE menu: OFF (Operating Guide → OPTION menu) ● STACK LOCK in SECURITY menu: OFF If STACK LOCK is set on, any menu related to Instant Stack cannot be operated. So, it is required to set to off for installation and setting on menu. (1) Using the buttons, go down the menu tree as below; ADVANCED MENU > SECURITY > STACK LOCK STACK LOCK dialog will appear on screen. (Operating Guide → SECURITY menu) (2) Use the ▲/▼ buttons to point at OFF, and press the ► button to complete the setting. 7