Icom IC-706MKIIG Service Manual page 20

TRANSMITTER ADJUSTMENTS (continued)
ADJUSTMENT ADJUSTMENT CONDITION
IDLING 1 • Display frequency: 14.10000 MHz
CURRENT • Mode
• [Q2 MIC GAIN]
(for drive
amplifiers) • turn R162, R174, R175, R214,
R231 (on the PA unit) to maximum
counterclockwise position.
• Disconnect the plug from J571 on
the PA unit.
• Transmitting
2 • Display frequency: 145.10000 MHz
• Mode
• [Q2 MIC GAIN]
• Transmitting
3 • Display frequency: 14.10000 MHz
(for final
amplifiers) • Mode
• [Q2 MIC GAIN]
• Transmitting
4 • Transmitting
5 • Display frequency: 145.10000 MHz
• Mode
• [Q2 MIC GAIN]
• Transmitting
• Display frequency: 14.10000 MHz
SWR
1
DETECTION • Mode
• Ground CP1071 on the MAIN board.
• Connect an audio generator to
[MIC] connector and set as:
1.5 kHz/30 mV
• Transmitting
• Transmitting
2
After remove the jumper wire from CP1071 on the MAIN board.
3
MEASUREMENT
UNIT
PA
: USB
: 1 (minimum)
: USB
: 1 (minimum)
: USB
: 1 (minimum)
: USB
: 1 (minimum)
Rear
: USB Panel
FILTER
4 - 6
LOCATION
Connect a DC 0.5 A increase from that
ammeter between R162 is in maximum
the DC power supply counterclockwise posi-
and transceiver's DC tion.
power socket (P601
on the PA unit).
1.0 A increase from
step 1.
1.0 A increase from that
R174 is in maximum
counterclockwise posi-
tion.
1.0 A increase from
step 3.
2.0 A increase from
step 4.
Connect an RF 100 W
power meter to
[ANT1] connector.
Connect a digital Minimum voltage
multimeter to check
point W16.
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
PA
Quick
set
mode
FILTER
R162
R214
R174
R175
R231
Q2 MIC
GAIN
C58