So, ich hab die lösung jetzt raus, ein produktionsfehler der bei vielen ricoh 7040 und 7060 laufwerken auftritt. eine schraube im laufwerk wurde nicht richtig geschmiert.
in comp.publish.cdrom.hardware ist eine anleitung zum selberreparieren:
Sounds like you have the infamous lack of lubrication problem.
| >==========================================================
| >Due to the inadequate lubrication of a mechanical part of the
| >Ricoh 7060/7040 and the AOpen 9624 (= Ricoh 7060) write failures may
| >occur.
|
| While the unit is open, be sure not to contaminate internal parts. Wash
| your hands before starting; keep them clean while working; and work in a
| dust-free environment.
|
| >Take the unit out of the computer, remove the top cover of the casing
|
| To do this, remove the four screws from the bottom of the unit (one of
| which is normally covered by a warranty sticker); turn the unit top side
| up; slide the top cover back a bit while prying up the plastic tab at
| the center of the front bezel to release the tab; and then lift the top
| cover off while spreading the sides a bit to free the retaining/locking
| tabs on the sides.
|
| >and eject the loading tray by inserting a pin into the small hole
| >situated in the bezel, just below the loading tray.
|
| A straightened paper clip works fine.
|
| >Next you need to remove a bracket, approx. 5 cm wide, by unscrewing 2
| >small screws.
|
| The bracket (plate) in question has a plastic CD hub in the center and
| covers the full width of the drive (about 12 cm). The approx. 5 cm
| measurement is front to back (i.e., overall size of the bracket is about
| 5 x 12 cm).
|
| >Then, seen from the front side of the burner, a worm drive is
| >visible on the left.
|
| The metal drive screw is visible on the *inside* of one of the two rails
| running from front to back. Look at an angle -- the drive screw is not
| visible when looking straight down at the drive.
|
| >This is the part that requires lubrication.
| >Apply some light grease (vaseline may do the job just as well) and
|
| Don't use grease or Vaseline -- too viscous and easily contaminated. If
| you don't have ready access to professional lubricants, I recommend
| Archer Precision Lubricator with Teflon, Radio Shack Cat. No. 64-2301A,
| which should be available in retail stores. Put a single *small* drop
| on the center of the metal drive screw. Do not use too much lubricant!
|
| >after reassembling and reinstalling the unit, your Ricoh 7060/7040 or
| >AOpen 9624 will/may perform flawlessly again!
|
| Before reassembling, slide the tray back into the drive until it locks
| in place.
|
| After reinstalling the drive in your computer, insert a filled audio CD
| and seek between the first track and the end of the last track several
| times in order to distribute the lubricant over the length of the drive
| screw. Then run a write simulation or two to see if you were
| successful. (I burned a filled test CD and then compared it to the
| source just to be sure.)
| >=======================================================
ich werd das jetzt bei mir machen....
bueth (Anonym)
