![background image](http://html.mh-extra.com/html/icom/ic-m220/ic-m220_instruction-manual_612743059.webp)
49
1
7
4
10
15
18
2
8
13
5
11
16
3
9
14
6
12
17
11
TROUBLESHOOTING
The transceiver does not turn ON.
z
Bad connection to the power supply.
→
Check the connection to the transceiver and power supply.
(p. 43)
z
The fuse is blown.
→
Repair the problem, and then replace the fuse. (p. 45)
Little or no sound comes from the speaker.
z
Squelch level is set too high.
→
Set the squelch to the threshold point. (p. 9)
z
Volume level is set too low.
→
Set the volume level to a suitable level. (p. 9)
You cannot transmit with high power.
z
Some channels are set for low power or receive only by regulations.
→
Change channels. (p. 7)
z
The output power is set to low.
→
Push
HI/LO
to select high power. (p. 5)
Scan does not start.
z
More than 2 favorite channels are not set.
→
Set at least 2 favorite channels. (p. 13)
No beep sounds.
z
The Key Beep function is OFF.
→
Turn ON the function. (p. 38)
Individual or Group ID cannot be set.
z
The entered ID code is incorrect. The first digit must be set to between ‘1’ and ‘9’ for an
Individual ID.
→
Enter a correct ID code. (p. 15)
“??” blinks instead of the position and time.
z
23.5 hours have passed since you manually entered the position.
z
The GPS position is invalid.
→
Enter the position and time. (p. 16)
“NO POS” and “NO TIME” are displayed instead of the position and time.
z
The GPS signal is not correctly received.
→
Check the transceiver is located where it has a clear view to receive signal from
satellites. (p. 46)
→
Check the cable connection to NMEA In/Out leads. (p. 44)
z
The position and time have not been manually entered.
→
Enter the position and time. (p. 16)