F5TroubleshootingTechnical Notes and IndexFlash does not fire.• Flash is set to W (off ).• A shooting mode where flash cannot fire is selected.• Another function that is set now is restricting the flash.• The built-in flash does not fire when an external flash unit(optional) is used.• When shooting using Advanced Wireless Lightingphotography, set the group setting to Group A. When usingthe built-in flash as the commander, set the channel of theremote flash unit to 3 CH.See the instruction manual of your Speedlight (external flashunit).5764798787The digital zoom isnot available.• Off or Crop is selected for Digital zoom in the setup menu.• When Scene auto selector, Portrait, Night portrait, Easypanorama in Panorama, Pet portrait or 3D photographyis selected in scene mode, the digital zoom cannot be used.• The digital zoom cannot be used when Zoom exposure isselected in special effects mode.• Other functions that restrict the use of digital zoom are set.11136, 36,37, 41,42, 434679Image size notavailable.• Another function that is set now is restricting Image size.• When the scene mode is set to Easy panorama inPanorama or 3D photography, the image size is fixed.7941, 43No sound whenshutter is released.• Off is selected for Shutter sound under Sound settings inthe setup menu.• Sports, Museum or Pet portrait is selected in scene mode.• Other functions that restrict the use of the shutter sound areset.• Do not block the speaker.11137, 39,42792AF-assistilluminator doesnot light.Off is selected for AF assist in the setup menu. Even when Autois set, AF-assist illuminator may not light depending on the focusarea position or scene mode.111Pictures appearsmeared. Lens is dirty. Clean lens. F13Colors areunnatural. White balance does not match light source. 68, E33Ring-shaped orrainbow-coloredbands are seen onthe screen or theshot image.When the subject is backlit or when shooting with an extremelybright light source in the display, such as in sunlight, ring-shapedor rainbow-colored bands may appear on the image.Change the position of the light source or remove it from thedisplay, and try shooting again.–The image takenbecomes grainy.As the subject is dark, shutter speed is too slow or ISO sensitivityis too high.• Use flash.• Specify a lower ISO sensitivity setting.5668, E31Problem Cause/Solution A