Icom IC-775 Service Manual

5-2
PLL
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
CONDITIONS
MEASUREMENT
VALUE
ADJUSTMENT
POINT
UNIT
LOCATION
UNIT
ADJUST
REFERENCE
FREQUENCY
1 •
Displayed
frequency:
Any
•
R360
(PLL
unit) :
Center
•
Receiving
PLL Connect a
frequency
counter to P3.
60.000000
MHz PLL
L4
2
Connect
an RF voltmeter
toP3.
Meiximum
level
(0
dBm or
more)
L6, L7
PLL-A
REFERENCE
LOOP
LOCK
VOLTAGE
1 •
Displayed
frequency: 7.99999
MHz
•
Mode
USB
•
Receiving
PLL Connect a
digital multi-
meter or
oscilloscope to
R46.
3.2 V
PLL C47
PLL-A
MAIN
LOOP
LOCK
VOLTAGE
1 •
Displayed frequency
: 7.99999
MHz
•
Receiving
PLL
Connect a
digital multi-
meter or
oscilloscope to
J12.
6.5
V
PLL C86
2 •
Displayed
frequency:
14.99999
MHz
6.5
V
C96
3
•
Displayed
frequency:
21.99999 MHz
6.5 V
Cl 07
4 •
Displayed
frequency : 29.99999
MHz
6.5 V
C117
PLL-B
REFERENCE
LOOP
LOCK
VOLTAGE
1 .
SPLIT
: ON
•
Main frequency
readout: 7.999999
MHz
•
Mode
: USB
•
Receiving
PLL
Connect a
digital multi-
meter
or oscilloscope
to
R141.
3.2 V
PLL
Cl 69
PLL-B MAIN
LOOP
LOCK
VOLTAGE
1 .
SPLIT
: ON
•
Main
frequency
readout: 7.999999
MHz
•
Receiving
PLL
Connect
a
digital
multi-
meter or oscilloscope
to
J14.
6.5 V
PLL
C205
2
•
Main
frequency readout:
14.999999
MHz
6.5 V
C218
3 •
Main frequency
readout :
21
.999999
MHz
6.5 V
C229
4
•
Main frequency
readout: 29.999999
MHz
6.5 V
C239
5-2

Icom IC-775 Specifications

General

Brand	Icom
Model	IC-775
Category	Transceiver
Language	English