Icom IC-M802 Service Manual

4 - 5
4-3 PA AND FILTER UNITS ADJUSTMENT
IDLING
CURRENT
(For drive
FETs)
(For final
transistors)
SWR
DETECTOR
1
2
3
s Operating frequency : 12.2350 MHz
s Mode : J3E
s Apply no audio signal to the [MICRO-
PHONE] connector.
s Disconnect J6702.
s Preset R6304 and R6412 on the PA
unit to maximum counter clockwise.
s Connect a dummy load or RF power
meter to the [ANT] connector.
s Transmitting
s Transmitting
s Transmitting
s Operating frequency : 22.0000 MHz
s Mode : J3E
s Connect the CP7332 (FOR line) on
the FILTER unit to ground.
s Connect an audio generator to the
[MICROPHONE] connector and set
as;
Frequency : 1.5 kHz
s Transmitting
Rear
panel
Rear
panel
FIL-
TER
Connect an ammeter
(10 A) between an
external power supply
and the transceiver.
Connect an RF power
meter to the [ANT]
connector.
Connect a DC volt-
meter to check point,
CP7331.
+2.0 A*
more than
the initial value.
1.0 A**
more than
the initial value.
Note the current
as the initial value.
+0.7 A
more than
step “2.”
140 W
Minimum level
PA
Audio
gen-
erator
FIL-
TER
–
R6304
R6412
Output
level
C7275
ADJUSTMENT ADJUSTMENT CONDITIONS
UNIT LOCATION
VALUE
UNIT ADJUST
TNEMTSUJDATNEMERUSAEM
s After the adjustment, connect J6701 to the PA unit.
1
2
s After adjustment, disconnect CP7332 (FOR line) on the FILTER unit from ground.
*; For all models except [VNM]. **; For [VNM].
(Replacement page)
Nov. 2011

Icom IC-M802 Specifications

General

Brand	Icom
Model	IC-M802
Category	Transceiver
Language	English