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Troubleshooting
If you have problems with your scanner, please refer to the following chart for
some suggestions that might help you eliminate the problem. If the scanner is still
not operating correctly after trying these tips, contact the dealer where you
purchased your scanner for assistance.
Troubleshooting Chart
Problem
Poor reception
Scanner will not power on AC or DC power supply not
The keypad does not work The scanner may need to be
Scanner will not scan when
SCAN
key is pressed
The scanner does not
receive digital
transmissions on digital
frequencies or trunking
systems
Initializing Global Parameters to Factory Defaults
If your scanner does not appear to be functioning properly, you
can reset the global radio parameters to their factory state
without losing any of your programmed data. Any custom
changes you have made to the radioʼs global parameters will be
lost.
PSR-500 User Manual
Page
Possible Cause
Weak signals from distant stations Reposition radio for best
Attenuator in use on weak signals Check performance with and
Strong signal overload from nearby
transmitter(s)
Loose or defective antenna
Incorrect modulation mode selected Ensure that the proper
properly connected
Dead batteries
initialized
Possible "birdie" frequency
programmed
The scanner may need to be reset
or initialized
No channels programmed, or only
one channel programmed, or all
channels locked out
SQUELCH control is not adjusted
properly
The digital channel or talkgroup is
not using APCO-25 digital
modulation
The digital channel or talkgroup is
encrypted
The digital channel or talkgroup is
being transmitted from a distant
location
Remedy
reception
without attenuator activated, use
setting with best reception
Check performance with and
without attenuator activated, use
setting with best reception
Inspect antenna and connectors
and correct any problems found
modulation mode is selected for
the type of system that is being
monitored
Check connection to AC or DC
power source
Replace or recharge batteries
Follow steps below to initialize
the scanner
Tighten squelch, apply attenuator
or lock out the "birdie" frequency
Follow steps to reset/reinitialize
the scanner following this table
Ensure that the scanner has
more than one channel
programmed and enabled for
scanning
Turn SQUELCH control
clockwise until scanning resumes
The scanner can only receive
APCO-25 C4FM/CQPSK IMBE
digital signals
The scanner will not receive
encrypted traffic
Reposition the scanner or use an
outdoor antenna to improve
reception
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