Icom IC-M127 [43/48] Troubleshooting 9

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TROUBLESHOOTING 9 PROBLEM POSSIBLE CAUSE SOLUTION REF p 32 p 37 No power comes on Power cord not connected properly Blown fuse Check the power cord connection Check the polarity of the power connection then replace the fuse No sound comes from the speaker The hailer or intercom function is activated The internal speaker is turned OFF in SET mode Handset is out of the cradle when an optional handset is used Push CH WX to turn the function OFF Turn the internal speaker ON in SET mode No beeps sound even when a switch is pushed Beep function is turned OFF Set beep level to 01 or more in SET mode Sensitivity is low and only strong signals are audible SQUELCH is rotated too far clockwise Antenna feedline or the antenna connector sol der has poor contact or is short circuited Rotate SQUELCH counterclockwise to a suit able position Check and if necessary replace the feedline or solder the antenna connector again Transmitting is impossible or high power cannot be se lected Transmission is restricted on some channels Change channels p 9 Desired channel cannot be selected Different channel group is selected Push and hold CH WX U l C to select the ap propriate channel group U S A INT or CAN P 7 No display backlighting Backlight function is turned OFF While pushing HI LO DIM rotate the channel selector to select the desired brightness p 11 Scan does not start No TAG channels are programmed Set channels to be scanned as TAG channels p 10 Receive signal cannot be un derstood Voice scrambler has been turned OFF Install the optional UT 98 then activate the func tion Reset the scramble code P 8 P 27 Voice scrambler code has not been set correctly p 8 pgs 27 29 Set the handset into the cradle pgs 26 27 p 8 p 32 39

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