|
To change the batteries of the Nagra SN series (the machine uses 2 AA cells,
which will run the machine for several hours), the bottom cover is easily removed by undoing 3 captive screws.
SN electronics are a mixture of once conventional miniature components and
newer surface-mount leadless items. There are 7 plug-in modules in this machine that mate to 3 smaller 'mother' boards fixed to the milled-from-the- solid alloy chassis.
To prevent interference with the play back head, the direct-drive servo-
motor (larger flat grey cylinder in the above image) uses capacitive speed sensing, and has a mixture of oilite and Jewelled bearings. It is worth knowing that the end cap jewel of the capstan can be broken if the machine suffers a severe knock.
Click on this picture for an image of the chassis.
|
|
Nagra SNN Cover Removed
|
