My Pioneer PDR 555-RW keeps reading Mon1 or Moni when I try to record my CD from my mixing board. I need to send this wedding music, and it is trapped in my board. HELP!

You can only use Music CD-R with the logo of Digital Audio, no regular CD-R for data will not work with any CD Recordable, it doesn't matter the brand of CDs. Remember that, I have a player like your and Sony, and that's the catch.

First do a lens celeanup, just in case.If it does not work It may be the motor. But before opening it I suggest to check if it is under guarantee.

Not a very specific problem description...

Did it ever work for you? You don't say what DOES happen when you try.

Is the signal reaching the recorder? Is it visible on the display when you select MONITOR?

Are you using CD-R AUDIO or MUSIC blank media? It requires them, not CD-R data disks.

Tape Input should be straightforward if you don't want to route it through a receiver - L and R Out from the deck to L and R Input on the CDR.

Through a receiver: if it has capacity for two decks, connect the PDR-609 itself as a the second cassette deck, then select copy, duplicate or whatever passes for it on the receiver to copy cassettes.

Without specifics of your interconnected gear I can't really go much further.

Phono is a whole 'nuther thing. Traditional turntables require a phono preamp (generally present in old receivers) to boost the tiny signal generated by the stylus to a usable level for downstream electronics. Most modern AV receivers DO NOT have a phono preamp.

http://www.service.pioneer-eur.com/peeservice/RegistrInstrMan.nsf/(CountDownloadinInstructionManuals3)?openagent&ID=168E74C4D7385310C1256DDE0037597C&Attachment=PRE1269_PDR-555RW.pdf

(This link was already posted in the answer to another question)

I experienced this problem a long time ago, i believe that it was because i tried to use a normal data cd-rw but the unit only reads audio discs. It has to be a cd-rw for audio only (will say cd-rw audio on the disc, whereas if it is a data disc it will simply say cd-rw.) Hope this helps..

I had the same problem and found that I was using the wrong type of CDs. If you look on the CD you have to use the CD that says Compact disc digital audio Recordable or Compact disc digital audio Rewrittable. After I used the Digital ones I could record on it. I then tried the CD on the PC and it worked. You can look on the top of the unit and see the information if you still have it. Hope this helps you.

I don't have a stand-alone cd recorder but like many people I have burned discs on the computer and had many disappointments. While some disc drives are clearly better than others, for no apparent reason, there does seem to be more reject discs with some software than others.
Particularly disappointing is the Nero burning software that performs well when it is first installed but seems to deteriorate fairly quickly with every computer restart. I know nothing about such things so I am only guessing the cause might be that Nero displaces some Windows components and Windows seems to try repairing itself when booting.

Like most things these days, especially digital things, your cd recorder is in fact a computer that depends entirely on the software loaded into it, software that could degrade or become corrupted over time.
While it is possible the disc drive (laser perhaps) has become less potent it wouldn't be unreasonable to suspect the software and I suggest you contact Panasonic.
It is probable, like many things requiring software, early versions were found to have problems and would be periodically updated.

http://www.service.pioneer-eur.com/peeservice/RegistrInstrMan.nsf/(CountDownloadinInstructionManuals3)?openagent&ID=168E74C4D7385310C1256DDE0037597C&Attachment=PRE1269_PDR-555RW.pdf

look for a small pinhole and insert a pin while powered up to reset the device