I have Panasonic Lumix FX9 and I have an original 16mb memory sd card that is working but when I put another card the camera says "memory card error please check tha card" and I don`t know what is the problem pls help me

This a camera with some years, be aware of that - that camera comes with an 16Mb card...

Try to format the card on the camera;
Also, some brands or models are incompatible - try to use other card and/or other capacity;
Always format the card on your camera.
Hope that helps, good luck.

No. The DMC-FX9 works with SD cards, not with SDHC cards.

Yes format the memory card. Go into the camera's Menu and select Foemat memory card.

is the lock on the card by chance. also depending on how old the camera is and how big the sd card is in gb. the lumix may not be able to handle that size of card, too many gb. My lumix would only accept up to 4 gb, so when I moved to 16 they did not work.

SD and SDHC cards fit the same slots, but they are slightly different electrically. Many cameras won't work with SDHC (high capacity) cards. SDHC is not backwards compatible.

If your manual doesn't specifically mention SDHC cards or memory card size bigger than 2GB, then the camera almost certainly won't work with SDHC. My Lumix won't work with anything larger than 1GB SD.

I think you mean 16 and 24 GB (Gigabyte), not MB, but those would not be SD cards. A card that size is actually an SDHC card. SD and SDHC cards fit the same slots, but they are slightly different. Many cameras won't work with the SDHC (high capacity) cards. SDHC is not backwards compatible.

If you really mean 16MB, then that would be rather small, not too big. 16MB is definitely compatible with the camera and is mentioned in the manual.

The maximum memory card size mentioned in the manual is 1GB, and that is quite big enough. If you really need more space, then just carry a spare, like people used to take extra film with them on holiday.

Take a look at the memory card. SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card. If the switch is already in the proper position, slide it fully the other way and then back again.

I have the same camera, save the colour (black). As soon as I read your post, an alarm went off. I decided to re-check my User Guide (PDF Eng version, page16), for the Lumix DMC-FZ30:
•On this unit, you can use SD Memory Cards of the following capacity (from 8 MB to 2 GB). Please confirm the latest information on the following website:
http://panasonic.co.jp/pavc/global/cs
(This Site is English only.) • This unit supports SD Memory Cards formatted in FAT12 system and FAT16 system based on SD Memory Card Specifications. • This unit does not support MultiMediaCard for recording motion pictures. • The reading/writing speed of a MultiMediaCard is slower than an SD Memory Card. When a MultiMediaCard is used, the performance of certain features may be slightly slower than advertised. • After recording motion pictures using the MultiMediaCard, the card access indication may appear for a while, but this is not a malfunction. • Keep the Memory Card out of reach of children to prevent swallowing.
8MB, 16MB, 32MB, 64MB, 128MB, 256MB, 512MB, 1GB, 2GB (Maximum)

Unlike 35mm cameras that store images on film, Lumix® Digital Cameras store images on SD Memory Cards, which make sharing and storing your pictures easy and convenient. You simply insert an SD Memory Card into the camera, take pictures until the card is full, and then you can transfer the pictures onto a compatible PC. Once you saved all your pictures, you can erase the card and start all over again.

This functionality allows unlimited consecutive shooting up to the capacity of the SD Memory Card in the camera—ideal for capturing fast-moving objects in high resolution. The number of shots may vary depending on memory card size, picture size, and compression.