142 Light blockerIf external light reflected on the screens isdistracting, attach the light blockers.The upper-left light blocker is labeled “L,” and theupper-right one, “R.” Attach the correct top lightblocker on each side by pushing the tabs into thetwo holes on the top of the lens section.Attach the bottom light blocker by pushing the tabsinto the four holes on the bottom of the lens sectionand the two holes on the side before wearing theunit.• It may not be possible to attach the lightblockers when wearing some sorts of glasses.• If external light is still distracting with the lightblockers on, dim the room lights or move awayfrom external light.3 Attaching the connecting cord holderTo keep the connecting cord of the headmounted unit out of the way, use thesupplied connecting cord holder and attachthe connecting cord to the lower headbandstrap.NotesLight blocker (Top)Light blocker (Bottom)Connecting cordholderHook for bottomheadband strapHook for connectingcord