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Film holders are not recognized - Nikon Coolscan 9000 ED

Nikon Coolscan 9000 ED I've been using for 6 years nearly every day now refuses to recognize the film holder._________It says, "No film holder detected. Try to clean the square holes at the front side of the film holder and if this doesn't work, try another holder." _____________ I tried all: cleaned all holders, opened the scanner and cleaned it from dust; restarted the computer; turned the scanner off/on/off/on with 5 min intervals. Nothing helped. ______ Then I tried another program - Viewscan. It also said, "Insert the film holder" while it was already inserted.______   Who knows what might it mean? That the scanner grew too old?

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NachoMahma7 years ago
> clean the square holes
.  That sounds to me like it uses light beams (maybe not visible) shining on photodetectors. Check that area closely for dirt. If there are any connectors on the wires going to the source(s)/detector(s), gently unplug and re-insert.
.  Search the web for replacement parts, if needed.
+1
Nacho has it nailed.
What I'll add its that the "light beams" are usually infra-red, which you can't see BUT your mobile phone camera can. Look at the machine with the camera and see if you can see the lights. You may even need to take the covers off.

Steve