Canon EOS 5D Mark II Instruction Manual - Page 20

Troubleshooting Problem Push buttons or controls are sticky and hard to operate Solution - Remove the camera and rinse the closed housing in fresh water. Vigorously press each push button in and out several times to release any trapped saltwater or debris. - Press a sticky push button all the way in and place a small amount of lube on the small end of the push button shaft at it's base. Release and operate the push button several times to distribute the lube. - If a control is sticky, grab the control knob, pull it out, and then push back in. If still sticky, see the Control Maintenance section - pages 23 & 24. - Return housing to Ikelite for routine maintenance. Image is over- or under-exposed - Check that the strobe(s) are firing when taking a picture. - When using an external strobe, make sure it is turned on, set properly, and it's battery is charged. - Check any corded connection points. - Adjust camera shutter speed, aperture, or exposure compensation. - Move closer to or further away from the subject. Water enters the housing - Remove, clean and properly lubricate the main housing and port o-rings. - Look for hairs, dirt, or foreign debris crossing the o-ring seal. - Reassemble the housing without a camera installed and pressure test or take diving. - Return housing to Ikelite for routine maintenance. 20