Options—
465B
Service
Option 07
Inverter Balance
NOTE
If the
mat
or
oscilloscope
use is
with
a 12-volt source,
perform this
step
while operating the oscilloscope
with dc source on 12 volts.
NOTE
Operate the oscilloscope in the 24 V mode Set the dc
There
is a
slow
drift (about
a
second)
after the
source to 24 volts. Attach the probe ground to the common
Inverter Balance
adjustment has been moved.
This is
negative terminal (A) and connect the test oscilloscope
due to
transistor characteristics and
will require a
probe tip to
C1601 (C).
slight Inverter
Balance read/ustment
A very close
approximation of the preceding
method
CHECK
—
that
the
signal
is flat. See
Figure 6-12.
can pe obtained by
setting
the Inverter Balance
control for
the minimum
sound coming from the
Inverter.
Turn-Off
Level
Set the dc source fur 21.8 volts.
ADJUST—Turn-off Level (R1613) slowly until
Figure
6
12.
Option 07 Inverter balance.
Option 07 turns Off.
ADJUST—Inverter Balance (R1633) for the flattest
signal.
6-29
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