6
Installing the Tubes
Be sure the SFCD 1 is OFF (Main Power Switch on the rear panel in the “off” position)
and the AC power cord is detached before installing any tubes or when any of the tube
sockets are empty.
Wearing the cotton gloves provided with the SFCD 1 when handling tubes will prevent
skin oils from depositing on the glass surface of the tubes. The oils could cause the tubes
to become “gassy” and fail prematurely.
Inspecting the tube boxes that come with the player, you will notice that the boxes are
labeled V600 and V500 to correspond with the socket labels. See Reference Diagram of
the open Chassis for further clarification. Insert each tube in the corresponding socket in
the chassis, as labeled on the printed board and in the diagram.
When installing these 9 pin, small signal tubes (6922s), pay extra attention to the tube
pins and socket holes. You will notice an open space where an imaginary tenth pin or
hole would be. This is for proper tube alignment. Be sure pins are in line with holes when
installing tubes. Gently rock the tube into the socket until the tube is firmly seated.
ONCE THE TUBES ARE IN PLACE SCREW DOWN THE COVER. THE SFCD 1
IS NOT TO BE OPERATED WITH THE COVER OFF. THERE IS INVISIBLE
LASER RADIATION WHEN THE COVER IS OFF. AVOID DIRECT EXPOSURE
TO THE LASER BEAM.
Note the larger space
between two of the pins and
holes for proper alignment of
tube and socket.
