Receiver Adjustment - Icom IC-3200A Service Manual

5
-
3
RECEIVER
ADJUSTMENT
TEST INSTRUMENTS REQUIRED measurement connection location
(1)
VOLTAGE REGULATED POWER
SUPPLY
* Output
voltage
;
13.6V
DC
±15%
•
Current capacity
:
lOAormore
;
f2)
VOLTMETER
• Input impedance
[3)
SINAD
METER
50kQA/
DC
or better
f4)
RF
SIGNAL
GENERATOR
* Frequency range
:
0,1—30 MHz
* Output
level
:
0.1^V
—
lOOmV
(5)
EXTERNAL SPEAKER
* Impedance
:
30
AC
POWER
SUPPLY
SINAD
i
RF SIGNAL
METER
,
GENERATOR
TO EXTERNAL
SPEAKER JACK
ANT,
VOLTMETER
MAIN UNIT
IC-320OA/E
ADJUSTMENT
TOTAL
GAIN
:
®
VHP BAND
® UHFBAND
1
©
UHF
BAND
1
UNIT
VALUE
Maximunn
level
MEASUREMENT
LOCATION
Connect
a voltmeter
to
cathode
of D9,
ADJUSTMENT CONDITIONS
* Frequency
display
MAIN
Connect
a voltmeter
to
Maximunn
IC-3200A: 146.10MHz cathode
Of D9,
level
IC-3200E:
145.10MHz
*
SQUELCH
CONTROL:
Maximum
CCW
Apply
RF
signal to
ANTENNA
|
CONNECTOR,
Level:
32^iV(-77dBm)
!
Dev.:
±5
kHz
Mod,!
1kHz
*
Frequency
display
|
IC-32O0A:
445,10MHz
|
IC-3200E:
435.10MHz
j
*
SQUELCH CONTROL:
Maximum
CCW
* Apply
RF
signal
lo
ANTENNA
CONNECTOR
Level; 32^(V
(-77d8m)
Dev,;
±5kHz
Mod.:
IkH;
^
_
Adjustment
conditions are
same
as
EXTERNAL
Connect
a
SINAD
meter Less than
above.
SPEAKER
to
the
EXTERNAL -13dB
JACK
;
SPEAKER
JACK.
NOTE: An RF
helical cavity consisting of
LI
—
LS
for the
VHP
SAND
or
L13 and LISforthe
UHF
BAND
has been thoroughly
pre^adjusted
at
the
factory.
If
you need
to
have
this
component
adjusted or re-adjusted<
please contact any
authorized
ICOM
dealer
or
ICOM
Service Center since
making
this
adjustment
requires
a
sweep
generator.
ADJUSTMENT
POINT
UNIT
MAIN
ADJUST
L6
L20