Seaching on eBay a few minutes ago I came across a CF-74 with the chicklet style backlit keyboard on it at Toughbook CF-74 Touch 8GB RAM 500GB HDD Backlit Keyboard Rugged Panasonic Laptop (092281864136) | eBay
I have had my CF-74 apart and it only has one cable for the keyboard.
Has anyone here heard of this before or have done this mod?
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I was going to do this mod ,but I never got around to it
You only need to tap into 5Vdc usb and interface to the keyboard power input
Quite easy , no control on brightness though - 
 I wonder if the adapter board from a CF-28 might provide the brightness control. There were actually 2 kinds of "Texas" boards that support an emissive keyboard in later CF-28's. The more common one produces high voltage for the green emissive keyboard. But there is also a low voltage version that supports a CF-29 style emissive keyboard in a CF-28. It looks almost the same as the high voltage Texas board, but is missing the 7 or 8 white capacitors.
Like Alex, I had aspirations for making this work. I've got next week off so maybe this would be the time to figure out the CF-74 emissive keyboard mod. 
Emissive Keyboard on CF-74?
Discussion in 'Panasonic' started by rusty503, Nov 19, 2011.