Icom GM800 Instruction Manual - Page 94

Troubleshooting, Problem, Possible Cause, Solution

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11 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION REF. The transceiver does not turn ON. • B ad connection to the power supply. • Fuse is blown. • Check the connection to the transceiver and power supply. • Find the cause, repair, then replace the fuse. p. 80 p. 86 Little or no sound comes from the internal speaker. • Squelch level is set too high. • Volume level is set too low. • The internal speaker is OFF. • Set the squelch to the threshold p. 15 point. • Set the volume to a suitable p. 3 level. • Turn ON the internal speaker. p. 5 You cannot transmit. • Some channels are set for low power or receive only by regulations. • Change channels. p. 11 No beep sounds. • The Key Beep function is OFF. • Turn ON the Key Beep function. p. 77 The Main screen is not displayed • MMSI (DSC self ID) code is not • Set the MMSI (DSC self ID) p. 8 at power ON. set. code. Individual or Group ID cannot be set. • The entered ID code is incorrect. The fist digit must be set to between ʻ1ʼ and ʻ9ʼ for an Individual ID. The fist digit must be set to ʻ0ʼ for a Group ID. • Enter a correct ID code. p. 23 "??" blinks instead of the position • 4 hours have passed after you data and time. manually entered the position data. • The GPS position data is invalid. • Enter the current position data. p. 27 "NO POSITION" and "NO TIME" are displayed instead of the position data and time. • A GPS receiver is not correctly connected. • The position data and time have not been manually entered. • Check the GPS receiver connection. • Enter the current position data and time. p. 80 p. 27 Sensitivity is too low, and only strong signals can be heard. • The antenna is defective or the coaxial cable connector is shorted or cut. • Repair the problem and then reconnect to the antenna connector. p. 82 The communication cannot be established • The antenna is defective or the coaxial cable connector is shorted or cut. • Repair the problem and then reconnect to the antenna connector. p. 82 The received DSC call content is • The printer is not correctly • Check the printer connection or p. 80 not printed out. connected, or the paper supply add paper. is exhausted. "The transceiver cannot receive • The transceiverʼs Phase Lock • Contact your dealer. - or transmit. Contact your dealer." Loop is unlocked. is displayed. The transceiver is locked up, and • A software error has occurred. - - does not respond. (The transceiver will automatically restart after approximately 10 seconds has passed.) 89

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89
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
The transceiver does
not turn ON.
• Bad connection to the power
supply.
• Fuse is blown.
• Check the connection to the
transceiver and power supply.
• Find the cause, repair, then
replace the fuse.
p. 80
p. 86
Little or no sound comes from
the internal speaker.
• Squelch level is set too high.
• Volume level is set too low.
• The internal speaker is OFF.
• Set the squelch to the threshold
point.
• Set the volume to a suitable
level.
• Turn ON the internal speaker.
p. 15
p. 3
p. 5
You cannot transmit.
• Some channels are set for
low power or receive only by
regulations.
• Change channels.
p. 11
No beep sounds.
• The Key Beep function is OFF.
• Turn ON the Key Beep function.
p. 77
The Main screen is not displayed
at power ON.
• MMSI (DSC self ID) code is not
set.
• Set the MMSI (DSC self ID)
code.
p. 8
Individual or Group ID
cannot be set.
• The entered ID code is
incorrect.
The fist digit must be set to
between ʻ1ʼ and ʻ9ʼ for an
Individual ID.
The fist digit must be set to ʻ0ʼ
for a Group ID.
• Enter a correct ID code.
p. 23
“??” blinks instead of the position
data and time.
• 4 hours have passed after you
manually entered the position
data.
• The GPS position data is
invalid.
• Enter the current position data.
p. 27
“NO POSITION” and “NO TIME”
are displayed instead of the
position data and time.
• A GPS receiver is not correctly
connected.
• The position data and time
have not been manually
entered.
• Check the GPS receiver
connection.
• Enter the current position data
and time.
p. 80
p. 27
Sensitivity is too low, and only
strong signals can be heard.
• The antenna is defective or
the coaxial cable connector is
shorted or cut.
• Repair the problem and then
reconnect to the antenna
connector.
p. 82
The communication cannot be
established
• The antenna is defective or
the coaxial cable connector is
shorted or cut.
• Repair the problem and then
reconnect to the antenna
connector.
p. 82
The received DSC call content is
not printed out.
• The printer is not correctly
connected, or the paper supply
is exhausted.
• Check the printer connection or
add paper.
p. 80
“The transceiver cannot receive
or transmit. Contact your dealer.”
is displayed.
• The transceiverʼs Phase Lock
Loop is unlocked.
• Contact your dealer.
–
The transceiver is locked up, and
does not respond.
• A software error has occurred.
–
(The transceiver will
automatically restart after
approximately 10 seconds has
passed.)
–
11
TROUBLESHOOTING