Sony TA-2000F - Page 3

-TA-2000F
SERVICING NOTES
The
FET’s
used
in
the
TA-2000F
are
selected
according
to
their
Idss
rank,
so
use
replacement
FET’s
with
the
exact same Idss rank.
Idss
rank
is
indicated
by
the
identification
number,
as
shown
in
Fig.
A.
On
all
plug-in
type
PC
boards
except
the
MUTING/POWER
SUPPLY
board,
left-
and
right-channel
conductor-
side
patterns
are
designed
symmetrically.
This
makes
a
trouble
check
possible
through
interchange
of
channels
by
reinserting the boards upside down.
or
lot voltage * lot Idss rank
number ldss rank number
Fig. A | Example of Idss rank