Icom IC-756PRO III Service Manual page 26

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