Icom IC-756PROII - Receiver Adjustments; Rx Peak; Mixer Balance

4 - 6
TRANSMITTER ADJUSTMENTS—continued
Ic APC
HF BANDS
OUTPUT
POWER
50 MHz BAND
OUTPUT
POWER
FM
DEVIATION
AM
CARRIER
POWER
AM
MODULATION
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1
1
1
1
1
1
• Display freq. : 3.550000 MHz
• Mode : RTTY
• Connect CP501 to GND.
• Transmitting
• Display freq. : 14.100000 MHz
• Mode : RTTY
• [RF POWER] : Max. CW
• [TUNER] : OFF
• Transmitting
• Display freq. : 51.000000 MHz
• Mode : RTTY
• [RF POWER] : Max. CW
• [TUNER] : OFF
• Transmitting
• Display freq. : 29.60000 MHz
• Mode : FM
• Filter : 15 kHz
• [RF POWER] : Max. CW
• [MIC GAIN] : Center
• Connect an audio generator to
[MIC] connector and set as:
Frequency : 1 kHz
Level : 10 mVrms
• Transmitting
• Display freq. : 14.100000 MHz
• [RF POWER] : Max. CW
• Mode : AM
• [MIC GAIN] : Center
• Apply no audio signals to [MIC]
connector.
• Transmitting
• Display freq. : 14.10000 MHz
• Mode : AM
• [MIC GAIN] : Center
• [RF POWER] : Max. CCW
• Connect an audio generator to
[MIC] connector and set as:
Frequency : 1 kHz
Level : 10 mVrms
Rear
panel
Rear
panel
Rear
panel
Rear
panel
Rear
panel
Rear
panel
Connect an amme-
ter between power
supply and the
IC-756PROIII.
Connect an RF
power meter to
[ANT1] connector.
Connect an RF
power meter to
[ANT1] connector.
Connect an FM devi-
ation meter to [ANT1]
connector through an
attenuator.
Connect an RF
power meter to
[ANT1] connector.
Connect a modu-
lation analyzer to
[ANT1] connec-
tor through an
attenuator.
23 A
105 W
100 W
±4.5 kHz
40 W
90%
MAIN-A
MAIN-A
MAIN-A
DSP-A
MAIN-A
DSP-A
R545
R507
R509
R2227
R510
R2229