Maintenance; General; Troubleshooting Chart - Standard Horizon HX500E Owner's Manual

10. MAINTENANCE

10.1 GENERAL

The inherent quality of the solid-state components in STANDARD HORIZON
radios will provide many years of continuous use. Take the following precau-
tions to prevent damage to the radio.
• Keep the microphone connected or the jack covered at all times to pre-
vent corrosion of electrical contacts;
• Never key the transmitter unless an antenna or suitable dummy load is
connected to the antenna receptacle.
• Ensure that the input voltage does not exceed the value specified in your
Owner's Manual.
• Use only STANDARD HORIZON-approved accessories and replacement
parts.

10.2 TROUBLESHOOTING CHART

SYMPTOM
The [SCAN] key does
not start the scan.
The USA/INTL/CAN
modes do not function.
Press and holding the
SQL switch does not
eliminate background
noise.
Cannot change any
function.
Key Lock does not
function.
Indicator does not light
when charging a
battery.
HX500E
TROUBLESHOOTING CHART
PROBABLE
CAUSE
No channels
memorized.
Squelch is not
adjusted.
Proper operation not
followed.
Low battery.
Key Lock is on.
Proper operation not
followed.
Defective battery
FNB-83.
REMEDY
Use the MEM key to enter de-
s i r e d c h a n n e l s i n t o t h e
transceiver's memory.
Adjust the squelch to threshold
or to the point where noise just
disappears. Further adjustment
of the squelch control may elimi-
nate incoming signals.
HOLD down the 16/9 key and
press the DW key.
Charge battery. Refer to section
3 of this manual.
Turn Key Lock off. Refer to sec-
tion 4, H/L key.
Hold down the H/L key for 1 sec-
ond.
Contact your Standard Horizon
dealer.
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