Icom IC-706MKIIG Service Manual page 20

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