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SERVICE
MANUAL
HF/VHF TRANSCEIVER
i746PRO
INTRODUCTION DANGER
This service manual describes the latest service information NEVER connect the transceiver to an AC outlet or to a DC
for the IC-746PRO HF/VHF TRANSCEIVER. power supply that uses more than 16 V. This will ruin the
transceiver.
DO NOT expose the transceiver to rain, snow or any liquids.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or DO NOT reverse the polarities of the power supply when
obligation. connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100 mW)
to the antenna connector. This could damage the transceiv-
er's front end.
ORDERING PARTS REPAIR NOTES
Be sure to include the following four points when ordering 1. Make sure a problem is internal before disassembling the
replacement parts: transceiver.
2. DO NOT open the transceiver until the transceiver is
1. 10-digit order numbers disconnected from its power source.
2. Component part number and name 3. DO NOT force any of the variable components. Turn
3. Equipment model name and unit name them slowly and smoothly.
4. Quantity required 4. DO NOT short any circuits or electronic parts. An insu-
lated tuning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the trans-
ceiver is defective.
1110003870 S.IC NJM2058M-T1 IC-746PRO MAIN UNIT 5 pieces 6. DO NOT transmit power into a signal generator or a
8810005770 Screw BiH M3