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(d)
Change
the input
frequency
to
800 Hz.
Adjust
A2
R227
(400
Hz
filter)
for
Ml
scale
deflection of the distortion
meter.
(e)
Repeat
operations
(b)
to
(d)
as
necessary
so
that
the distortion
meter
indibates
f.s.
d.
1000
Hz
Band
Rejection
Filter
(a)
Test equipment
:
-
Low
distortion
oscillator.
(b)
Press
the
CAL
and 1000
Hz
filter
switches simultaneously,
(c)
Apply
a signal of
5
kHz
1
V
r.
m.
s.
to the
TF
2337A
input
terminals.
Adjust
A2
R202
(1000 Hz)
for distortion
meter
-f.
s.d.
'
(d)
Change
the input
frequency
to
2
kHz.
adjust
A2 R227
(1000 Hz)
so
that the distortion
meter
indicates
f.
s.d.
(e)
Repeat
operations
(b)
to
(e)
as necessary so
that
the distortion
meter
indicates
f.
s.
d.
Bias
Adjustment
(a)
Test equipment
:
-
Low
distortion
oscillator.
(b)
Set the
FUNCTION
switch
to
400
Hz.,
LEVEL RANGE
to
1
V
and
DISTORTION
RANGE
to
0.
1%.
Apply
a
signal of
400 Hz,
IV
r.
m.
s.
to
the
TF
2337A
input terminals,
(c)
Adjust
A1 R105
so
that the
distortion
meter
indicates less
than
0.
007%.
(d)
Set the
FUNCTION
switch
to
1000
Hz.
Alter
the input
frequency
to
1000 Hz.
Ensure
that
the distortion
meter
indicates less
than
0.
007%.
CHASSIS
WIRING
CHECK
F^.
5,
2
shows
the
chassis
connector
layout.
'
,
•
'vV
''''h
FRONT
PANEL
1
h-
'
hi
Fig.
5.2
Chassis Connector Layout
Diagram
TF
2337A
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