Pentax Optio 550 Operating Manual page 29

Deleting
Image folder could not be
created.
This card is not formatted.
Compression error
Data being recorded
Image protected
Alarm set
146
The image is being deleted.
The largest file number is assigned to an
image and no more images can be saved.
Insert a new SD Memory
Card/MultiMediaCard or format the SD
Memory Card/MultiMediaCard. (p.126)
The SD Memory Card/MultiMedia Card you
have inserted is unformatted, or has been
formatted on a PC or other device and is
not compatible with this camera. (p.126)
Compression of the image you captured
has failed. Change the recorded pixels or
quality levels, and take a picture again.
The movie picture is being recorded.
The image you are trying to delete is a pro-
tected image. (p.99)
The alarm has been enabled.