Icom IC-730 Maintenance Manual page 56

Q)
I
w
Adjustment
item
PLL frequency
adjustment
PRE MIX
frequency
adjustment
Adjusting procedures
;.
'ill
1) Set the mode switch to AM or CW and
displayed frequency at 13.900.0 MHz.
2) Set the FREQUENCY SET R162. of
MAIN UNIT to the center position.
3) Connect the frequency counter to R11
of the PLL UNIT.
4) With the RIT SW turned OFF. adjust
the frequency at R2 of the RIT PCB
to 41.000;() MHz.
5) With the R IT SW turned ON and
RIT knob placed at the center position
adjust the frequency at R2 of the
RIT PCB to 41.000.0 MHz.
6) Connect the frequency counter to P1
of PLL.
7) Adjust C31 of PLL UNIT so that the
frequency becomes 13.200.0 MHz.
1) MODE: AM or CW
2) Connect the frequency counter to P3
of B.P.F UNIT.
Measuring
instruments
Frequency
counter
Frequency
counter
Frequency
counter
Measuring location Adjusting location
Number of
Instrument
adjusting
UNIT
Terminal UNIT Parts
reading
location
@
(R162) (Center)
PLL R11
CD
RIT R2
41.000.0 MHz
~
RIT R3 41.000.0 MHz
~
PLL P1
®
PLL C31
13.200.0 MHz
~
"
B.P.F. P3
®
PRE. MIX
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