Icom IC-RP1620 Service Manual page 34

TRANSMITTER ADJUSTMENT
(CONTINUED)
PA AND REG-A UNITS
VALUE
25
W
14
V
Lights up in green.
AWUSTMENT
POINT
3
4
5
-
6
7
UNIT
PA
REG-A
Front
panel
ADJUSTMENT ADJUSTMENT CONDITIONS
[LOCAL INHlBlTj switch: ON
Transmitting
(
Ground the [MICROPHONE]
)
connector (pin 5).
Apply AC voltage to the [AC]
connector.
Remove W18 (EP3).
Transmitting
ADJUST
R15
R3
Verify
OUTPUT
POWER
REGULATOR
OUTPUT
VOLTAGE
1
1
-
2
After adjustment, disconnect AC voltage.
MEASUREMENT
UNIT
Rear
panel
REG-A
Front
panel
R7
Verify
Verify
LOCATION
Connect the RF
power meter to the
ANT] connector.
Connect the DC
voltmeter to EP3,
pin 3.
[POWER] indicator
After adjustment, reconnect W18.
REG-A
Front
panel
0 V
12 V
Lights up in red.
Connect the DC
voltmeter to EP3,
pin 3.
[POWER] indicator
Apply DC voltage (1 0 V).
[DC RESET] switch : ON
Apply DC voltage (1 2 V).
[DC RESET] switch : ON
REG-A
Front
panel