Motorola MSF 5000 Instruction Manual page 186

Chapter
4
Alignment
MSF
5000
Instruction Manual
Alignment Procedures
4-20
Overdrive Control
NOTE
Step
3
through
step
8
only apply
to high
power stations,
which contain two Power Amplifiers. Otherwise,
proceed to
Power Set Control.
3. Using
the
tuning tool,
rotate the
Overdrive Control
potentiometer (R453)
fully CW.
R453 is part of the Uniboard. Refer to
Figure
4-12 for the
location of
the
Overdrive
control.
OPERATE
TRANSIT
TRANSIT
OPERATE
Rao
OVERDRIVE CONTROL
POTENTIOMETER
Lio
R453
Rasa
@ ®
OO
FO
FREQ. ADJ
RF TRAY COVER
MSFI03S
021894JNM
Figure 4-12
Overdrive Control Adjustment
4.
Key
the station
by
setting
the
LOC PTT MUXbus
bit
(A1/D1)
or
by
setting
the
PL Dis/Xmit
switch
to
Xmit.
5.
Using
the
tuning tool, adjust
the Po
Power Set control
to
obtain the
overdrive power level.
The overdrive power level
is
shown in Table
4-4
through Table
4-7.
6.
Using
the
tuning tool, adjust
the
Overdrive Control slowly
CCW
until
the
PA
Full LED
just turns
off.
7.
Dekey
the station
by clearing
the
LOC PTT
MUXbus bit
(A1/D1).
8.
Using
the
tuning tool, adjust
the Po
Power Set
potentiometer
fully CCW,
then
CW
1/8 turn.
68P81092E04
3/19/94
Chapter
4
Alignment
MSF
5000
Instruction Manual
Alignment Procedures
4-20
Overdrive Control
NOTE
Step
3
through
step
8
only apply
to high
power stations,
which contain two Power Amplifiers. Otherwise,
proceed to
Power Set Control.
3. Using
the
tuning tool,
rotate the
Overdrive Control
potentiometer (R453)
fully CW.
R453 is part of the Uniboard. Refer to
Figure
4-12 for the
location of
the
Overdrive
control.
OPERATE
TRANSIT
TRANSIT
OPERATE
Rao
OVERDRIVE CONTROL
POTENTIOMETER
Lio
R453
Rasa
@ ®
OO
FO
FREQ. ADJ
RF TRAY COVER
MSFI03S
021894JNM
Figure 4-12
Overdrive Control Adjustment
4.
Key
the station
by
setting
the
LOC PTT MUXbus
bit
(A1/D1)
or
by
setting
the
PL Dis/Xmit
switch
to
Xmit.
5.
Using
the
tuning tool, adjust
the Po
Power Set control
to
obtain the
overdrive power level.
The overdrive power level
is
shown in Table
4-4
through Table
4-7.
6.
Using
the
tuning tool, adjust
the
Overdrive Control slowly
CCW
until
the
PA
Full LED
just turns
off.
7.
Dekey
the station
by clearing
the
LOC PTT
MUXbus bit
(A1/D1).
8.
Using
the
tuning tool, adjust
the Po
Power Set
potentiometer
fully CCW,
then
CW
1/8 turn.
68P81092E04
3/19/94