Akai AP-002

SOUND GROOVE
TRANSPORT GROOVE
WIDTH BETWEEN
PERTORMDNCES.
LEAD-OUT
GROOVE PITC
DIAMETER OF —>
LAST GROOVE
DIAMETER OF ———>
LAST SOUND GROOVE
The return mechanism of this machine is as shown in
Fig. 2. Because of the use of “speed displacement type”
perception equipment, when the program (performance)
ends, and the pick up needle advances in lead-out
groove, the perception equipment operates regardless
of disc size (in case of JIS specification equivalent).
That is to say that because the speed displacement type
perception equipment operates with 100% certainty,
the proper type of record becomes important.
There are several different specifications. For instance,
domestic JIS, and foreign IEC, RIAA, etc., but this
machine
is
designed
to
operate
as
per
JIS
specifications.
Below is a summary of JIS record dimensions necessary
for automatic return.
Transport
groove:
If
transport
groove
diameter
is
within
230
mm,
and
this
pitch
or
transport
width
is
within
1
mm.
Lead-out
groove:
Lead-out
groove
pitch
is
4
to
9
mm
and
linkage
is
made
to
the
last
groove
at
more
than
one
revolution.
Last
groove:
Last
groove
is
always
linked
from
lead-out
groove
at
concentric
circle.