Icom IC-F7000 Service Manual page 26

5-3 PA AND FILTER UNITS ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITIONS
IDLING 1 • Operating frequency : 12.2350 MHz
CURRENT • Mode
(For drive • Apply no audio signal to the [MIC] con-
FETs) nector.
• Disconnect J6702.
• Preset R6304 and R6412 on the PA
unit to max. counter clockwise.
• Preset R6515 on the PA unit to max.
clockwise.
• Connect a dummy load or RF power
meter to the [ANT] connector.
• Transmitting
(For final 2 • Transmitting
transistors)
• After adjustment, connect J6701 to the PA unit.
SWR 1 • Operating frequency : 22.0000 MHz
DETECTOR • Mode
• Connect the CP7332 (FOR line) on
the FILTER unit to ground.
2 • Connect an audio generator to the
[MIC] connector and set as:
• Transmitting
• After adjustment, disconnect CP7332 (FOR line) on the FILTER unit from ground.
: J3E
: J3E
Frequency : 1.5 kHz
Level : OFF
MEASUREMENT
UNIT LOCATION
Rear Connect an ammeter
panel (10 A) between an
external power supply
and the transceiver.
Rear Connect an RF power
panel meter to the [ANT]
connector.
FIL- Connect a DC volt-
TER meter to the check
point, CP7331.
5 - 5
ADJUSTMENT
VALUE
UNIT ADJUST
2.0 A PA R6304
0.7 A R6412
90 W Audio Output
gen-
erator
Minimum level FIL-
C7275
TER
level