Icom IC-725 - Page 27

6-3
RECEIVER
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITIONS
MEASUREMENT
VALUE
ADJUSTMENT
POINT
UNIT LOCATION
UNIT ADJUST
BFO
FREQUENCY
1
•
Displayed frequency; 14.10000 MHz
•
Mode
;
USB
•
Receiving
•
MAIN Connect the
frequency counter
to
R266.
9.01300 MHz
MAIN C294
2
•
Mode : CW
•
Transnfiitting
9.01060 MHz
L83
3
•
Mode
: LSB
•
Receiving
9.01000 MHz
L82
1
•
Mode
: CW 9.00980 MHz
(±150
Hz)
Verify
5
•
Mode : AM
No output
SENSITIVITY 1
•
Displayed
frequency: 14.10000 MHz
•
Mode : USB
• [RIT] svritch ; OFF
• [AGO] switch : IN (Fast)
• [ATT] switch
: OFF
• [NB] switch :OFF
•
[PRE] switch
:
ON
• [SQL]
control :Max. CCW
•
Set the signal
generator;
Level ;
0.16
pV (-123 dBm)
Modulation
:
OFF
•
Receiving
Rear
panel
Connect the AC
milli-
voltmeter
to
the
[EXT SP] jack
with
an
8 O
load.
Pre-set to
max. CW.
MAIN R138
Maximum audio output
ievei
L33, L34,
L35,
L36,
LI
6,
LI
7,
L21, L22,
L23,
L79,
L78, L77
TOTAL GAIN 1
•
Displayed
frequency: 14.10000 MHz
•
Mode : USB
• [PRE] switch : OFF
•
Set the signai
generator;
Level
:
1.0
mV
(-47
dBm)
Modulation: OFF
•
Receiving
Rear
panel
Connect the AC milli-
voltmeter
to
the
[EXT SP]
jack with
an 8 Q load.
1.0 V(OdB)
Front
panel
[AF]
control
2
•
Set the signai
generator;
Level
: OFF
30
mV (-30
dB)
MAIN R138
S-METER 1
•
Displayed
frequency: 14.10000
MHz
•
Mode : USB
• [PRE]
switch : OFF
•
Set the
signai generator;
Level :
50
pV
(—73
dBm)
Modulation; OFF
•
Receiving
Front
panel
Meter S9
MAIN
R116
2
•
Set the signai
generator;
Level :
50
mV
(
-
1 3
dBm)
S9-I-60 dB
R110
3 Repeat
above adjustments 1 and 2 a couple of times.
6
—
4