Icom IC-3200E - 5-8 CPU RESET; 5-9 CPU BACKUP BATTERY

SECTION
5
MAINTENANCE
AND ADJUSTMENT
5
-
1 PREPARATION
BEFORE SERVICING
1 .
Detach the power
cord
and turn OFF the
VOLUME/POWER CONTROL before
performing
any
work on the transceiver.
2.
Do
not short circuit components
while making adjustments.
3.
Use
an insulated
tuning
tool for all
adjustments.
4. Do not force
any of the variable components. Tune them slowly and
smoothly.
5.
Follow the instructions exactly. If an
indicated result is not obtained, repeat
the instruction until the correct
result is
obtained.
6. Check the condition
of
connectors,
solder joints and screws when adjustments
are complete. Confirm that components
do
not touch each other.
7. Confirm
defective
operation
of the transceiver
first
when checking
an out-of-service unit. Verify that external
sources
do
not cause
the problem.
8.
Use
the
correct tools
and test
equipment.
9. Remove the transceiver case as
shown in SECTION
8-1
.
10. Attach a
13.8 volt DC external power
source
to
the power supply connector. Be
sure to check the polarity.
1 1 . For
transmission problems, attach a
dummy load to the antenna connector.
For reception
problems,
attach
an antenna
or
signal generator to the antenna
connector. Do,not transmit into the
signal generator.
12. Recheck for the suspected malfunction with
the VOLUME/POWER CONTROL
ON.
13. Check the
defective
circuit.
Measure the DC voltages of the collector, base
and
emitter of
each
transistor.
5
—
1