Please refrain from copying and pasting (including modifications and partial use) as I put a lot of effort into writing this. It is prohibited and violates intellectual property rights and copyright law (as Mercari previously stated). We will take appropriate action in case of malicious behavior. Please read the entire description carefully before purchasing to prevent any problems. The maintenance photos are for illustrative purposes. The same work is being done. I have cleaned the jog dial, replaced and reinforced certain parts to make it a little easier to use. Cleaning or opening the unit alone will not fix it unless these parts are replaced. Even if you purchase a used item that has been confirmed to be working, the VYNAL mode is almost always broken. Color: Silver Type: CDJ Player Pioneer CDJ-400 I have opened it up, cleaned it, cleaned the pickup, and applied grease. External cleaning has also been done. I think this is the case with all the units I've handled, but large capacity USB drives may take a while to load. Although it's a simple amateur inspection, I have checked the USB and CD reading (reading several discs), ±6 10 16 WIDE, MT, MASTER tempo, REV, jog dial for cueing and effects, cue, and track search. To be honest, it's not very suitable for scratching-intensive play. I checked the return of the top panel, which is said to be a weakness of this model, and it seemed normal to me. It seems to be a very delicate operation, so please refrain from purchasing if you are concerned. * To ensure everything is perfect, I will inspect and clean it again before shipping. * I will include the CDR used for the inspection as proof of reading. * It may not read old, deteriorated CDRs, dirty or scratched CDRs, poor quality CDRs, or depending on how they were written. I recommend using music-specific CDRs. External cleaning has been completed. I have noticed people are pointlessly copying and using my text. I spent a lot of time and effort writing this, so I will report anyone I find doing so. Although not genuine, it comes with an AC cord of the same standard and equivalent. Color: Silver系 Type: CDJ Player Type: DJ Equipment Item: DJ Player Type: CDJ Manufacturer: Pioneer DJ