Icom IC-M57 Instruction Manual page 10

Mi Troubleshooting
e Power connector has a poor
contact.
e Blown fuse.
e [SQUELCH] is turned too far
clockwise.
e An external speaker or cable
is broken.
e [SQUELCH] is turned too far
clockwise.
e Antenna feedline is cut or
short-circuited.
e Bad connection at the anten-
na connector. |
e No power
e Check connector pin.
e Replace the fuse.
e Rotate [SQUELCH] counter-
clockwise.
e Unplug the external speaker
jack.
e Rotate [SQUELCH] counter-
clockwise.
e Check the feedline and correct
if necessary.
e Check the antenna connector
and clean the center conductor.
e No sound from the
speaker.
e Sensitivity is low and
only strong signals
are audible.
e Transmission is restricted on e See " Transmitter restrictions."
some channels.
e A weather channel is se-
lected.
e Displayed channel e Channel 16 is selected. e Push [D/MODE] or [WX].
does not change. |
e Dual watch does not e Channel 16 is displayed. e Push [D/MODE] or [WX]; then
function. | push [DUAL].
li Fuse replacement
¢ Cannot transmit at
high power or at all.
e Push [D/MODE] or [CH16].
Two fuses are installed in the DC power cable. If the fuses
blow or the transceiver stops functioning, locate the source
of the problem and replace the damaged fuses with new,
rated ones. (10A)