Icom IC-R10 Service Manual page 16

Communications receiver
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5-2
COMMAND
ADJUSTMENT
(ADJUSTMENT SET MODE)
ADJUSTMENT
ADJUSTMENT
CONDITIONS
DISPLAY
OPERATION
ADJUSTMENT
SET
MODE
1
Apply square
wave
form
signals (10 Hz,
3
V
p-p) to
the
[Cl-V]
connector.
'i;:rr='T T::i"..l.
While pushing
[EDIT], turn
power
ON.
VXO
(2ND
REFERENCE
FREQUENCY)
1
Turn
[DIAL]
to
select
the
VXO
adjustment.
Push
[EDIT]
to
enter the
VXO
adjustment.
2
Connect a
frequency counter
via
0.001
pF
capacitor
to
the
check
point
PLM,
•Frequency
:
512.0000
MHz
•!
'"'i
j"I:
K*l
J.
S'..
K
:
: :
:
Adjust
0503
on
the
MAIN
unit to
512.00000
MHz.
3
Push
[EDIT]
to
select
adjustment
frequency.
•Frequency
:
511.9950
MHz
r
''
!— i—
Turn
[DIAL]
to
set correction
level
closest
to
the display frequency,
and
then
push
[ENT]
to
program
Into
memory.
1
Push
[EDIT]
to
select
adjustment
frequency.
Frequency
:
512.0050
MHz
J.
.jI!.
::
hi*
*..J
hi*
i
*
1
r":
Turn
[DIAL]
to
set correction
level
closest
to
the display frequency,
and
then
push
[ENT]
to
program
into
memory.
5
Push
[EDIT]
to
select
adjustment
frequency.
•Frequency
:
418.3975
MHz
/
•!
rt
•Trj"':*n::'
m\
\
*••!•
1
:"'i
J.
.
.
1
1 '
1
1"'|
Turn
[DIAL]
to
set correction
level
closest
to
the display frequency,
and
then
push
[ENT]
to
program
Into
memory.
6
Push
[EDIT]
to
select
adjustment
frequency.
Frequency
:
418.4025
MHz
1
1
L.!
*1
L.h
.i.
1
*^*
«
'••I*
h
..*
J
1
{
1
1
Turn
[DIAL]
to
set correction
level
closest
to
the display frequency,
and
then
push
[ENT]
to
program
Into
memory.
Push
[EDIT]
to return to
the
same
condition
as
that
in
step
1
.
AFC
1
Turn
[DIAL]
to
select the
AFC
adjustment.
Push
[EDIT]
to
enter the
AFC
adjustment.
2
Connect an
SSG
to
the
antenna
connector
and
set
as:
Frequency
:
145.00000
MHz
Level
:
1
mV*
(-47
dBm)
Mode
:
FM
Modulation
:
OFF
Connect
a
voltmeter (100
kiJ
impedance)
to
the
check
point
QM
on
the
MAIN
unit.
Receiving
i
.••!
i:-;
h'ii...!
J.
::
*1..*
C.*
'I..*
*^.*
:1s:
Adjust L71
on
the
MAIN
unit to
1.0
V.
3
Connect a
voltmeter (100
kS2
Impedance)
to
the
check
point
QS
on
the
MAIN
unit.
Receiving
Adjust
L471
on
the
MAIN
unit
to
1.0
V.
4
Push
[ENT]
to
program
into
memory.
I**':
L*'
Verify that
"OK" appears on
the
display.
Push
[EDIT]
to return to
the
same
condition
as
that
in
step
1
.
'This output
level of
a standard
signal
generator
(SSG)
Is
indicated
as
SSG's open
circuit.
5-3

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