Teac A-2300SR - Electrical Measurement and Adjustment Guide; Electrical Adjustment Locations and Points

8.
MEASUREMENT
AND
ADJUSTMENT
—
ELECTRICAL
—
©
Before
performing
maintenance
on
this
unit,
thoroughly
clean
and
demagnetize
the
entire
tape
path.
TEAC
maintenance
equipment
to
be
used:
TEAC
TZ-261
for
cleaning
TEAC
E-3
for
demagnetizing
or
equivalent
@
The
electrical
adjustment
procedure
for
the
A-3300SR
and
A-2300SR
are
identical,
also,
the
tape
speeds
of
the
two
models
are
the
same
(7-1/2
ips,
HIGH
and
3-3/4
ips,
LOW
speed).
The
checks
and
adjustments
are,
unless
otherwise
indicated,
for
the
left
channel
at
the
LOW
tape
speed.
The
same
procedures
are
to
be
applied
for
the
right
channel
also
and
again
for
both
channels
at
the
HIGH
tape
speed.
©
It
is
important
that
the
deck
be
set
to
proper
voltage
and
frequency
for
your
locality.
8-1
ADJUSTMENT
LOCATIONS
AND
ADJUSTMENT
POINTS
ho mh platen
NG * PLAY BACK
Ns
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i)
302
8
1301
L302
[~ @1 vce401
L
L @2 veso2
f BIAS TRAP
eo——-@
L201 L202
©
rec eg YR
REC M CAL
®
9
Mm VR305
BIAS TRAP
Bi VR304 MONI CAL_VR301
q9
1303
L304
ADJUSTMENT
ADJUSTMENT
14
VR101/103
P.B.EQ (HIGH)
VC401/403
VR102/104 P.B. EQ (LOW
ae
P.B
ne
one
.B. L
L201/202 BIAS TRAP (OUTPUT)
VR202/204 P.B. METER LEVEL
VR301/304
MONITO
maeey
R LEV
re L302/304
VR302/305 REC METER LEVEL
L401 DUMMY COIL
VR303/306 REC LEVEL
eee!