One need to first remove the round covering plate on the VTF
adjuster to get access to the inside of the arm. Then the aluminum
scale on the arm shaft need to be removed in order to get access
to the 3 screws one of which holds the Din 5 connector. Ikeda used
some kind of ''weak glue'' for both but the aluminum scale is more
easy to remove than the mentioned covering plate. Scratches on
the covering plate are easylly made while those reduce the value
of the arm. This work should be done by an expert like ''our''
Dertonarm . Alas he was ''priceless'' before in metaphorical sense
but will be at present in literal sense (grin).