The disk drawer on my Marantz dr700 will only open 3 quarters of the way - not quite far enough to insert a disc easily. If I squeeze a disk in, and try to close, it won't close and the unit still behaves as if it's open. Seems mechanical rather than electrical - anybody help ??? Thanks

CD/DVD players use a protocol;
Open tray. Insert disk. Tray switch tells mechacon that the tray is shut. Attempt to focus on disk.
If focus is acheived, then it will spin up and try to read the disk otherwise it will ask for a readable disk.
If the tray keeps opening, I would suspect the tray detect switch is malfunctioning, maybe the drive belt has stretched.

The Marantz UD7006 has an internal cover over the CD/DVD mechanism that is hard to remove. There is a square black plastic part in the left corner that protrudes through. Get something to hook that corner an gently bend it out far enough to clear that corner to remove. You can push back in to rescrew cover back down. You might have to cut the white caulk on foam block and remove it too. I slid the lens mechanism back and forth a few times on its rail.

According to the Sony manual, a C-31 error code indicates that the disc is not inserted correctly. Their recommended fix is to restart the system and re-insert the disc correctly. That just leaves the problem of getting the disc out, right? If eject doesn't work, you may have to open the disk drawer manually. With single-disc systems this is fairly simple: there is always a small pinhole near the disc drawer, usually just below the right side of the drawer. Straighten a paper clip and stick it into the hole until the latch releases, then remove the disc and close the drawer. All should be fine from there on. I do not know if multi-disc systems have the same sort of release but that is where I would start.

With the unit unplugged, there is a small hole on the front plate. Take a straightened out paperclip and insert it into the hole. push FIRMLY but not too far, and the drawer should pop open about a half inch or so. You will be able to pull it open far enough to remove any disc that may be inside. The disc could be the problem, as drives will hang when trying to read a corrupt disc. I hope this helps.

Most likely, your Optical Pickup(laser) has worn out. It needs about.15 milliwatts to operate correctly. When you insert the disc, the laser must focus on it to read the table of contents. If it no longer has enough output left, it will assume there is no disc inserted in the drawer, which is your issue. If you're interested in having it fixed, please visit my website at, audioserviceclinic.com. Thank you.

Look for a miniature little hole somewhere on the face of your unit,. Get a paperclip (smallish) straighten out one end and insert into holr. It might say reset, might not. You want to do a sort of heimlich manuever thrust (miniature style), insert the paperclip, thrust about a quarter of an inch, and the drawer should pop open. At least enough where you can "help it gently", don't yank its slide mechanism out, but verbally threatening sometimes helps............ Sometimes...............

troubleshooting advice below-try steps in order until the problem is resolved.

1. Be sure to check your disc to make sure it is flat. You can check this by putting the disc upside-down on a flat surface. If the disc is bowed up on any side or in the center, do not use the disc as it may get stuck in the drive.
2. Make sure you are inserting the disc far enough for the drive mechanism to activate. Discs must be inserted at least three-quarters of the way into the drive, and often nearly all the way in, before the drive will pull them in.
3. Make sure the disc is completely inserted in the drive. The disc-insert cycle runs the motor for about 6 seconds. If, for whatever reason, a disc is not completely inserted, the drive will reverse and push the disc back out of the drive.
4. Since the entry slot can be tight at first, give the drive 1 or 2 seconds to accept the disc and pull it in on its own. If the drive struggles with injecting discs or injects them part-way then stops, inserting a disc multiple times should correct the issue.
5. Restart the macbook.
   
6. Do not use discs that have anything attached to them or dangling from them (such as "sweeper" or cleaning discs).
7. If the drive repeatedly does not insert media fully, or accept media at all, please contact Apple, contact an Apple-Authorized Service Provider, or make an appointment with an Apple Retail Store for additional troubleshooting, evaluation, or service.

If the CD or DVD disks you inserted work in some other reader, then your reader is the problem -- even though it is properly connected to your computer, and Windows has the correct device-drivers, it is the "hardware" that is the problem.

When you insert a disk, rotate it to some position, i.e., top-lettering goes in first, and close the drawer. Do you hear the drive start to spin the disk? Open the drawer. Is the disk in the same (non-rotated) position? If so, then the motor that spins the disk is the problem. If the disk does spin, but nothing happens, then it is the "laser" part of the mechanics that is not working.

Replace it.

THERE IS AN EMERGENCY OPEN OPTION ON MOST ALL DISK DRIVES, LOOK RIGHT BELOW THE DRAWER USUALLY TO THE RIGHT FOR A SMALL PINHOLE. GET A PAPER CLIP AND STRAIGHTEN ONE END OUT, INSERT STRAIGHT INTO HOLE UINTIL YOU FEEL IT STOP AT THE MANUAL RELEASE CATCH AND GENTLY PRESS UNTIL YOU HEAR THE DRAWER BEGIN TO OPEN.
BLOW ANY DUST OUT, AND CHECK THE PC AND DRIVE WEBSITE FOR A POSSIBLE FLASH UPDATE FOR YOUR DRIVE MODEL. THEY ARE OFTEN POSTED WHEN DRIVES SHOW PROBLEMS READING SOME OF THE NEWER DISK BEING MADE. THIS HAS WORKED FOR ME A FEW TIMES IN THE PAST.

I had this happen to me as ell. you've probably got a cd stuck under the revolving tray. I took the top cover off and then opened the drawer and removed the offending disk. If you're not technically minded it's probably better to take it in to a repair shop. Mike