Icom IC-A20MK II Service Manual page 2

INTRODUCTION
This service manual describes the latest service information for the IC-A20MKTI
VHF AIR BAND TRANSCEIVER at the time of publication. .
DANGER
NEVER connect the transceiver to an AC outlet or to a DC power supply
that uses more than 15 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.
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»
1110002440 IC HPC1313HA | IC-A20MKII MAIN UNIT 5 pieces
8810000100 Screw PHM2x4ZK 1C-A20MKII CHASSIS UNIT 6
Addresses are provided on the inside back cover for your convenience.
REPAIR NOTE
-
Make sure a problem is internal before disassembling the transceiver.
2. DO NOT open the transceiver until the transceiver is disconnected from
its 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.
DO NOT keep power ON for a long time when the transceiver is defective.
DO NOT transmit power into a signal generator or a sweep generator.
7. ALWAYS connect a 30 dB—40 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.
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