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Page 89GX5500S
SYMPTOM
Transceiver fails to
power up.
Transceiver blows fuse
when connected to
power supply.
Popping or whining
noise from the speaker
while engine runs.
Sound is not emitted
from the internal or ex-
ternal speaker.
Sound is not emitted
from the PA speaker.
Receiving station re-
ports low transmit
power, even with trans-
ceiver set to HI power.
“HI BATTERY” or “LO
BATTERY” message
appears when the
power is turned on.
“PA ERROR” or “FOG
ERROR” message is
shown when the PA/
FOG mode is acti-
vated.
Your position is not dis-
played.
While in PA or FOG lis-
ten back modes, am
broadcasts can be
heard.
PROBABLE CAUSE
No DC voltage to the
transceiver, or blown
fuse.
Reversed power
wires.
Engine noise.
Accessory cable.
Accessory cable.
Antenna.
The power supply
voltage is too high or
too low.
Accessory cable.
Accessory cable.
Setting of the GPS
navigation receiver.
Strong AM radio sta-
tions are being
pickup up by the
speaker wires.
REMEDY
a. Check the 12VDC battery connections and
the fuse.
b. The PWR switch needs to be pressed and
held to turn the radio on.
Check the power cable for DC voltage, or re-
place the fuse (6A 250V).
Make sure the red wire is connected to the posi-
tive (+) battery post, and the black wire is con-
nected to the negative (-) battery post. If the fuse
still blows, contact marine product support.
Reroute the DC power cables away from the
engine. Add noise suppressor on power cable.
Change to resistive spark plug wires and/or add
an alternator whine filter.
Check the connections of the accessory cable
(Short Circuit the External speaker cable
WHITE/SHIELD).
Check the accessory cable connection (Short
Circuit the PA speaker cable RED/SHIELD).
Have the antenna checked or test the trans-
ceiver with another antenna. If the problem per-
sists, contact your Dealer for servicing.
Confirm that the connected power supply volt-
age is not 17 volts or lower than 10 volts.
Check the accessory cable connection (Short
Circuit the PA speaker cable RED/SHIELD).
Check the accessory cable connection.
Some GPS use the battery ground line for NMEA
connection.
Check the output signal format of the GPS navi-
gation receiver. This radio requires NMEA0183
format with GLL, RMB, or RMC sentence as an
output signal. If the GPS has a baud rate set-
ting make sure to select 4800 and parity to
NONE.
Need to replace the speaker wires to a sheilded
2 conductor wire available from Radio Shack
part number 278-513. Refer to section “8.3 AC-
CESSORY CABLE” for cable connections.
15.3 TROUBLESHOOTING CHART