Trimmer Adjustments; Ut-115 Top View - Icom IC-2200H Service Manual

5-4 TRIMMER ADJUSTMENTS

MEASUREMENT
ADJUSTMENT
CODEC 1 MAIN
FREQUENCY
SET
MODEM 1 MAIN
FREQUENCY
SET
MODURATION 1 MAIN
OUTPUT
LEVEL
2
3

• UT-115 TOP VIEW

• UT-115 BOTTOM VIEW
MEASUREMENT
UNIT LOCATION
Connect the frequency counter to
the check point CP101.
Connect the frequency counter to
the check point CP216.
• Transmit the UT-115 to connect
J301, pin 1 to GND.
• Connect the oscilloscope to the
J301, pin 21.
Disconnect J301, pin 1 from GND.
CP216
MODEM frequency set check point
CP101
CODEC frequency set check point
16.38400 MHz ±10 Hz
2.457600 MHz ±3 Hz
350 mV
C102
CODEC frequency set adjustment
J301, Pin 1
Transmit the UT-115
J301, Pin 21
Modulation output level
check point
5 - 6
ADJUSTMENT
POINT
VALUE
UNIT
MAIN
MAIN
±10 mV MAIN
p-p
C207
MODEM frequency set adjustment
ADJUST
C102
C207
R264