CD player-recorder won't work

because there is nothing to read in blank cd rw , because dvd operating system is not meant to write cd ,but only to read the disk

Check for scratches on the disk surface - these can inhibit the player from reading a disk correctly.

Some players will read olny certain type(s) of disks. This is an issue mostly for disks created on a computer, not those that are prerecorded and available for purchase or rental that contain movies and music.

As stated above, dIsks created on a home computer may not always be readable on a home player. Re-writeable and recordable types that are not listed as being compatible will not work. Check your manual to see which types are acceptable and not. DVD types are: DVD-R, DVD-RW, DVD+R, DVD+RW and DVD-RAM CD Types are CD-R, CD+R and CR-RW. Older home CD and DVD players generally work with "-R" types and the newer players with both "-R" & "+R" types. "-RW" and "-RAM" types are the least likely to be readable in home players.

Additionally, most players require that disks created on a home computer be "finalized". This is an extra step that isn't required by most CD / DVD drives in computers. Just because it works in your computer doesn't mean it will work in your home player. If you're using compatible media and still not able to read disks, check your CD / DVD recording software options to enable finalization.

Good luck!

The recorder could not care less what the upstream audio device IS or if it's live vs prerecorded as long as the connection works and there is a signal.

Put tape in. Make sure the plastic tap isn't broke on front of vhs tape, if so, put tape over it.
Put tape and vhs in player, turn vcr channel to 04 I believe. Then hit the copy button. Otherwise put on dvd/ hit copy button

Greeting message
When the unit answers a call, callers
are greeted by a greeting message. You
can record your own greeting message
or use a prerecorded greeting
message.
Recording your greeting
message
You can record your own greeting
message (max. 2 minutes and 30
seconds). If you do not record a
greeting message, a prerecorded
greeting message is used.
1 {MENU}
2 {V}/{^}: “Answering device” i
{OK}
3 {V}/{^}: “Record greeting” i
{OK}
4 After the handset beeps, speak
clearly about 20 cm (8 inches) away
from the microphone.
5 To stop recording, press {OK}.
6 {OFF}
Using a prerecorded greeting
message
If you erase or do not record your own
greeting message, the unit plays a
prerecorded greeting message for
callers and ask them to leave
messages.

Are you using CD-Audio or CD-Music media or CD-R's. Home recording CD recorders require the first types and will not work on CD-R's. It's a specification built in that supposedly collects and distributes a small fee from the sale of the blank Music CD's to give to the copyright holders of the music you are assumed to be pirating. Sort of like buying a card that let's you exceed the speed limit legally when you buy a sports car.
Additionally, the unit will not let you digitally copy a digital copy made on a consumer recorder. That spec was all thought up and implemented before everyone got PC's that can rip/copy/pirate prerecorded CD's without any restrictions. The digital copy horse left the barn years ago and audio CD recorders are still tied to special (more costly) media.

I had a similar ERR message and freaked out a bit for a week. Panasonic customer service was no help and suggested i send it in for VERY expensive repair. No way. After tons of additional research and trouble shooting I fixed my unit tonight. I downloaded the DMR-ES40 DVD Recorder Firmware Update from the Panasonic update and stored in on a CD. Put the cd in my dvd player following instructions from the website. My system is restored and works well again.
Why paid personnel at Panasonic could not tell me this is beyond my understanding.
Try updating you firmware as I did. Hope you get the same success. -Tamara

ERR-15 hard drive error. need to replace hard drive also it would be easier if you just take it in a repair shop

Download the digital wave player and install it. That will work for your VN-3100PC http://www.olympus.it/consumer/2590_software.cfm?category=0&productgroup=347&product=421&os=7&result=

what is err-14