Pll Adjustment - Icom IC-F1010 Service Manual

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Tx lock voltage adlustment
L38
Rx lock voltage adjustmenl
5.2 PLL ADJUSTMENT
L.V.
Lock voltage check point
Cl93 gc-rroroy
R376 1tc-rrozol
Ref. freq. adlustment
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ATLIIISTMtrNT
ADJUSTi'ENT CONDITIONS
MEASUREMENT
VALUE
AINUSTI,|EiIT
POINT
UNIT
LOCATION
UNlT At'JUST
PLL
LOCK
VOLTAGE
1
r Operating frequency: 136.000 MHz
r Receiving
MAIN
connect the digital
multi-meter or oscil-
loscope to the check
point'L.V."
3.0 v
MAIN 138
2
. Operating frequency: 174.000 MHz
r Receiving
1 0-1 4 V
Verify
3 o Operating frequency : 136.000 MHz
o Transmitting
3.0 v
L43
4
r Operating frequency: 174.000 MHz
o Transmitting
10 -14 V
Verify
PLL
REFERENCE
FREQUENCY
1
r Operating frequency: Any
o Transmitting
MAIN
Loosely couple the
frequency counter to
the antenna connec-
tor.
The same fre
quency as
programmed.
MAIN c 193
(rc-F1010
R376
(rc.F1020
0000 0
5 - 2