Troubleshooting Chart - Standard Horizon Quest GX1255S Owner's Manual

9.3 TROUBLESHOOTING CHART

SYMPTON
Transceiver fails to
power up.
Transceiver blows
fuse when connected
to power supply.
Popping or whining
n o i s e f r o m
speaker while engine
runs.
Sound is not emitted
f r o m t h e e x t e r n a l
speaker.
Receiving station re-
p o r t l o w t r a n s m i t
p o w e r , e v e n w i t h
transceiver set to HI
power.
"H I B A T T E R Y " or
" L O W B A T T E R Y "
message is scrolled
when the power is
turned on.
Your position is not
displayed.
GX1255S
TROBLESHOOTING CHART
PROBABLE CAUSE
No DC voltage to the
transceiver, or blown
fuse.
R e v e r s e d p o w e r
wires.
Engine noise.
t h e
External cable.
Antenna.
The power supply volt-
age is too high or too
low.
External cable.
Setting of the GPS
navigation receiver.
REMEDY
Rotate the VOL/PWR knob clock-
wise to turn on the transceiver.
Check the power cable for DC volt-
age, or replace the fuse (6A 250V).
Make sure the red wire is con-
nected to the positive (+) battery
post, and the black wire is con-
nected to the negative (-) battery
post. If the fuse still blows, con-
tact your Dealer.
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 polarity of the con-
nected external cable.
Have the antenna checked or test
the transceiver with another an-
tenna. If the problem persists, con-
tact your Dealer for servicing.
Confirm that the connected power
supply voltage is not 17 volts or
lower than 10 volts. Confirm that
the generator has not malfunc-
tioned.
Check the polarity of the con-
nected external cable.
Some GPS use the battery ground
line for NMEA connection.
Check the output signal format of
the GPS navigation receiver. This
radio requires NMEA0183 format
with GLL sentence as an output
signal. If the GPS has a baud rate
setting make sure to select 4800
and parity to NONE.
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