Canon EOS 5D Mark II Instruction Manual - Page 15

Installing the Port There are four port locks on the front of the housing, see figure Port Lock Release Button G, page 14. Each port lock has a Release Button. Lift the Locked Position release button and slide each Port Lock away from the port opening. In the unlocked Lift Release Button to Unlock position, the Release Button will remain in the up position as shown. Pull Back to Disengage Port To prepare the port for installation, remove the port o-ring and lightly lubricate it. The port seal is a side-to-side seal and requires the o-ring to be lightly lubricated for easy installation. Put a small amount of lubricant on your fingers and pull the o-ring through your fingers to lightly lubricate it. Do not stretch the o-ring. Check that the lip of the port where the o-ring fits and the sealing surface on the housing are clean. Place the port, with o-ring, into the housing port opening. Press down on the port firmly and evenly until you feel the port slide into place. Continue to push down on the port and push each port lock forward until the lock fully engages. It may help to slightly rotate the port as you push in on the port lock. Visually inspect the port lock and confirm that the Port Lock Release Button is seated flush against the Port Lock Body. Do not rely on an audible "click" to indicate that the lock is engaged. Check around the perimeter of the port seal to see that the o-ring is properly sealed and not extruded, figure 2, page 16. 15