Teac A-3300SX - Monitor, Line Control, and Input Level Checks

8-10 MONITOR LEVEL SETTING
OUTPUTSW.......... SOURCE
1. Turn LINE controls fully clockwise.
2. Apply a 400 Hz —18 dB (97 mV) signal from AF oscil-
lator to LINE IN jacks.
3. Adjust VR-301/VR-304 for —8 dB (308 mV) at the
OUTPUT jacks.
OSCILLOSCOPE
ATTENUATOR
Fig. 8-6 Test Connections for Monitor Check
8-11
SPECIFIED
LINE
CONTROL
SETTING
5.
Apply
a
400
Hz
signal
at
—8
dB
(308
mV)
to
the
LINE
IN
jacks.
6.
Adjust
LINE
controls
for
—8
dB
(308
mV)
at
OUTPUT
jacks.
NOTE:
At
this
point
both
the
LINE
Controls
and
the
OUTPUT
Controls
are
at
the
“Specified
setting”.
Do
not
move
these
controls
unless
instructed
in
this
procedure
to
do
so.
The
accuracy
of
many
of
the
following
adjustments
and
readings
depends
on
these
controls
being
at
the
“Specified
setting”.
8-12
VU
METER
LEVEL
CHECK
7.
Check
VU
Meters
for
0
VU
indication.
8.
Adjust
VR-302/305
for
0
VU,
if
necessary.
MONITOR PERFORMANCE
8-13 MIC INPUT LEVEL CHECK
This
is
check
only,
no
adjustments
are
to
be
made.
1. Set MIC controls fully clockwise.
(Make sure LINE controls are not moved)
2. Apply a. 400 Hz signal at —70 dB (0.244 mV) to the MIC
input jacks.
3. Check for —8 dB (308 mV) level at OUTPUT jacks.
4. With —8 dB (308 mV) at OUTPUT jacks, MIC input level
should be —70 dB+2 dB (0.194 mV ~ 0.308 mV).
5. Return MIC controls fully counter clockwise to prevent
noise insertion during following steps.
6.
Reset
the
LINE
Controls
to
the
“Specified
Setting.”