Icom IC-706 Service Manual page 20

TRANSMlTIER ADJUSTMENT
(CONTINUED)
MEASUREMENT
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITIONS
VALUE
POINT
UNIT
LOCATION UNIT ADJUST
IdAPC 1 • Displayed frequency:
3.50000 MHz
Rear Ammeter on the DC 22A MAIN R109
• Mode
RnY
panel
power supply
• [01 RF POWER]
H
• R95 (MAIN unit) : 3 o'clock position
• R109 (MAIN unit): 3 o'clock position
• R198 (MAIN unit): Max. clockwise
• Ground CP6 with a jumper wire.
• Transmitting
After adjustment, remove the jumper wire from CP6.
TRANSMIT 1 • Displayed frequency:
14.10000 MHz
Rear
Connect an RF power
50W MAIN R511
TOTAL GAIN
• Mode
USB
panel meter to [ANT 1]
• [01 RF POWER]
:
H
connector.
• [02 MIC GAIN]
5
• Connect an audio generator to [MIC]
connector and set as:
10 mV /1.5 kHz
• Transmitting
CARRIER 1 • Displayed frequency: 14.10000 MHz
Rear Connect a spectrum Minimum carrier MAIN Adjust
SUPPRESSION
• Mode
USBandLSB
panel analyzer to [ANT 1] via an level repeatedly
• Apply no signal to [MIG] connector.
attenuator. R191,
• Transmitting
R193
OUTPUT 1 • Displayed frequency: 14.10000 MHz
Rear Connect an RF power 100 W MAIN R95
POWER
• Mode
: USB
panel meter to [ANT 1]
• [02 MIC GAIN]
5
connector.
• Connect an audio generator to [MIG]
connector and set as:
100 mV /1.5 kHz
• Transmitting
2
• Displayed frequency :
52.00000 MHz
WOW R98
3 • Displayed frequency :
145.00000 MHz
Connect an RF power 10W
R338
meter to [ANT 2]
connector.
CWCARRIER 1 • Displayed frequency: 14.10000 MHz
MAIN Connect an oscilloscope Adjust as follows: MAIN R198
LEVEL
• Mode
CW
to CP3 and C177. Keying (C171)
• [01 RF POWER]
H
I
:
• [05 KEY SPEED)
:
60
CP3 :
• [M4 BRK]
BK (semi break-in)
• Transmit dots for a while using a paddle.
io-----:
.0 ......
FMVCO 1 • Displayed frequency: 29.10000 MHz
MAIN Connect a digital multi-
1.5V
MAIN C267
• Mode
FM
meter to CP4.
• [M4 TON]
OFF
• [01 RF POWER]
: H
• Apply no signal to [MIG] connector.
• Transmitting
FM
1 • Displayed frequency: 29.10000 MHz
Rear Connect an FM deviation
±4.8 kHz
MAIN R274
DEVIATION
• Mode
FM
panel meter to [ANT1] via an
• [M4 TON]
:
OFF
attenuator.
• [01 RF POWER]
H
• [02 MIC GAIN]
5
• R260 (MAIN unit): Center
• Connect an audio generator to [MIG]
connector and set as:
300 mV /1 kHz
• Transmitting
2
• Set the audio generator as:
±3.5 kHz
R260
10 mV /1 kHz
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