Icom IC-725 Service Manual page 2

INTRODUCTION
This service manual describes the latest service informa-
tion for the
IC-725
HF ALL BAND TRANSCEIVER at the
time of going to press.
If you require assistance or further information regarding
the operation and capabilities of the
IC-725,
contact your
nearest authorized lcom Dealer or lcom Service Center.
ORDERING PARTS
Be sure to include the following four points when
ordering replacement parts:
1. 10-digit order numbers
2. Component part number and name
3. Equipment model name and unit name
4. Quantity required
<SAMPLE ORDER>
1110001310 IC µPC577HA IC-725 MAIN UNIT 5 pieces
8810005510 Screw PHM3x6ZKBS IC-725 Topcover 10pieces
Addresses are provided on the inside back cover for your
convenience.
DANGER
NEVER
connect the transceiver to an AC outlet or
to a DC power supply that uses more than 16 V. This
will ruin the transceiver.
DO NOT
expose the transceiver to rain, snow or
any liquids.
DO NOT
reverse the polarities of the power supply
when connecting the transceiver.
DO NOT
apply an RF signal of more than 20 dBm
(100 mW) to the antenna connector. This could
damage the transceiver's front end.
REPAIR NOTE
1. Make sure a problem is internal before disassembling
the transceiver.
2. DO NOT open the transceiver until the transceiver
is disconnected from a power source.
3. DO NOT force any of the variable components. Turn
them slowly and smoothly.
4. DO NOT short any circuits or electronic parts.
An insulated tuning tool MUST be used for all
adjustments.
5. DO NOT keep power ON tor a long time when the
transceiver is defective.
6. DO NOT
tr~nsmit
power into a signal generator
or a sweep generator.
7 ALWAYS connect a 40 dB-50 dB attenuator between
the transceiver and a deviation meter or spectrum
analyzer when using such test equipment.
8. READ the instructions of test equipment thoroughly
before connecting equipment to the transceiver.