Troubleshooting - Radio Shack iScan 20-107 User Manual

Troubleshooting

Problem Cause
The scanner No power.
does not turn
on
Low battery Low batteries
warning beeps
and message
on LCD display
Poor or no Weak signals
reception from distant
stations.
Attenuator in
use on weak
signals.
Strong signal
overload
from nearby
transmitter.
Loose or defec-
tive antenna.
Incorrect mod-
ulation mode
selected.
The batteries
Scanning
are low and all
not available
shown on functions that
display write data to
the SD Card
(including
scanning) are
disabled to
prevent data
corruption.
Solution
Ensure that iSCAN is equipped with
fresh batteries. If powering iSCAN
from external power, make sure
that the external power plug is fully
inserted into iSCAN's PC/IF jack.
Recharge rechargeable batteries,
replace alkaline batteries, or plug in to
external power.
Reposition for best reception.
Turn SQUELCH counter-clockwise.
Check performance with and 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.
Ensure that proper modulation mode
is selected for the type of system
being monitored. If necessary, use
iSCAN PC Application to change
modulation mode. See "RX Mode" on
page 37.
Recharge or replace the batteries.
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Problem Cause
The scanner is Squelch may
on but does
not be adjusted
not scan correctly.
The scanner The SD Card
does not rec- is not properly
ognize the SD formatted.
Card
The SD Card
may not be
inserted fully.
The SD Card
may be
defective.
The SD Card
Init SD Card
remains when is not properly
the scanner is formatted.
turned on
The SD Card
may not be
inserted fully.
iSCAN does The USB cable
not accept
is not plugged
a firmware into the com-
upgrade puter or the
scanner.
The USB cable
drivers are not
installed.
Solution
Turn the squelch control
counterclockwise.
Use the iSCAN PC Application to
reformat the card. If using Windows to
format the card, the card format must
be FAT with 32k clusters.
Press the SD Card into the slot until
a click is heard and the card is fully
inserted in the slot.
Replace with a new SD Card.
Use the iSCAN PC Application to
reformat the card.
Press the SD Card into the slot until
a click is heard and the card is fully
inserted in the slot.
Connect the USB cable to the scanner
and the computer to proceed.
Use the CD to install the cable drivers.
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