English-6Attaching Mounting AccessoriesThe monitor is designed for use with the VESA mountingsystem.1. Attach Mounting AccessoriesBe careful to avoid tipping monitor when attachingaccessories.VESA Mounting Interface300 mm (V552)400 mm (V652)300 mm (V552)400 mm (V652)Mounting accessories can be attached with the monitor inthe face down position. To avoid damaging the screen face,place the protective sheet on the table underneath the LCD.The protective sheet was wrapped around the LCD in theoriginal packaging. Make sure there is nothing on the tablethat can damage the monitor.When using mounting accessories other than NEC compliantand approved, they must comply with the VESA-compatiblemounting method.NOTE: • Do not leave the monitor in the face-up or face-down position for more than one hour as thismay result in a negative effect on the screen’sperformance.• Prior to installation, be sure to place the monitoron a fl at area with adequate space.2. Using Option Board1. Turn off the main power switch.2. Remove the attached slot cover by unscrewing theinstalled screws (Figure 1).3. Insert option board in to the monitor.NOTE: Please contact your supplier for available optionboards.Do not apply excessive force to manipulate theoptional board before fi xing it with screws.Figure 13. Installing and removing optional tabletop standCAUTION: Installing and removing the stand must be doneby two or more people for V552, by four or morepeople for V652.To install, follow those instructions included with the stand ormounting apparatus. Use only those devices recommendedby the manufacturer.NOTE: For V552, use ONLY thumbscrews which areincluded in the monitor.For V652, use ONLY the thumbscrews which areincluded with the optional table top stand.When installing the LCD monitor stand, handle the unit withcare to avoid pinching your fi ngers.Optional table top standTableProtective SheetNOTE: For V552, install the stand so the long end of thefeet face forward.For V652, install the stand in the direction ofthe arrow which is imprinted on the surface ofthe stand.Use the ST-4620 for the V552 and the ST-651for the V652.4. Ventilation RequirementsWhen mounting in an enclosed space or recessed area,leave adequate room between the monitor and the enclosureto allow heat to disperse, as shown below.Allow adequate ventilation or provide air conditioning aroundthe monitor, so that heat can properly dissipate away fromthe unit and mounting apparatus; especially when you usemonitors in multiple screen.NOTE: The sound quality of the internal speakers willdiffer according to the acoustics of the room.