To recreate a capstan from a tap joint, please refer to the adequate section in the main menu.

Then open the Cj according to the service manual procedure.


  • Open the 9815, untightening keyboard and cover screws
  • This is the tape assembly: left: the head, right: the capstan
  • The capstan rubber went to goo...
  • Don't forget to unplug the flat cables if you have Opt.001/002
  • Goo may have spread all over the sub-assembly.
  • Note the orientation of the keyboard cble BEFORE unplugging
  • Make sure you have a machined capstan to the exact dimensions (see my other section)
  • Avoid touching/cutting connections when cleaning.