How to Upgrade, Repair, Disassemble a Sony Portable Media Player

Do you need to upgrade or repair your Sony portable (digital) media player? Here is a collection of free take apart instructions, disassembly pictures, upgrade and repair manuals, as well as do-it-yourself (DIY) tips and tricks for mobile media players (portable digital audio players and video players). If you have written a guide yourself (or if you know of a tutorial not linked here), please submit a new entry.

Sony CFS-930 Cassette Recorder	A BoomBox take apart guide.
Sony D-NF430 CD-WalkMan	An illustrated take apart guide.
Sony D822-K Car DiscMan	This teardown guide reveals the inner secrets of the audio player.
Sony MDS-S30	Some repair tips for the MiniDisc player.
Sony MZ-E55 MD Player	After some years of use an MD-Player needs some cleaning. Here are some photos of what the player looks like from the outside as well as on the inside after some years of usage.
Sony MZ-R2	How to fix an internal cable problem.
Sony MZ-R37/55/70/90/91/700/900 and more	The MD-COM project: a parallel PC interface for the MiniDisc player.
Sony MZ-R55	Fix for recording self-start problem.
Sony MZ-R70	How to add a condenser microphone.
Sony MZ-R700 MiniDisc	This teardown guide provide a look inside the MiniDisc player and should not be used as disassembly instructions.
Sony TCM-4500 Cassette Recorder	An illustrated take apart HOWTO.
Sony WM-FX20 Tape Cassette Walkman	A walkman breakdown to the innards.