PRO-90 300-Channel Trunk Tracker Scanner
(200-0520A)                Troubleshooting            Faxback Doc. # 60726

If you have problems, here are some suggestions that might help.  If they 
do not, take your scanner to your local RadioShack store for assistance.

Problem                   Possible Cause          Remedy

Scanner is on but will    SQUELCH is not corr-    Adjust SQUELCH
not scan.                 ectly adjusted.         counterclockwise.

                          Only one channel or no  Store frequencies into
                          channels are stored.    more than one channel.

Scanner is totally inop-  No power.               Check the battery pack
erative                                           or make sure the scanner
                                                  is plugged into a 
                                                  working AC or DC outlet.

                                                  Recharge the battery
                                                  pack.

                          The AC adapter/charger  Be sure the adapter's
                          or DC adapter is not    barrel plug is fully
                          connected.              plugged into EXT. PWR
                                                  jack.             

The scanner's display     The battery pack is     Make sure the battery
dims or the scanner       not correctly inst-     pack is installed
sounds a tone every 15-   alled.                  properly.
30 seconds.
                          The battery pack is     Recharge the battery
                          weak.                   pack.

Keypad does not work.     The keylock function    To turn off the keylock,
                          is activated.           press LOCK/(backlight 
                                                  symbol) until (key
                                                  symbol) disappears from
                                                  the display.

(BATT) appears.           The battery pack is     Recharge the battery
                          weak.                   pack.

Poor or no reception.     Battery pack is weak    Check the battery pack,
                          or completely dischar-  make sure the scanner is
                          ged.                    plugged into a working 
                                                  AC or DC outlet.

                          An antenna is not conn- Make sure an antenna is
                          ected or connected      connected to the scanner
                          incorrectly.

Error appears.            Programming error.      Reprogram the frequency
                                                  correctly, including the
                                                  decimal point.

In the scan mode, the     Programmed frequencies  Avoid programming
scanner locks on freq-    are the same as         frequencies listed under
uencies that have an un-  "birdie" frequencies.   "Birdie frequencies" in
clear transmission.                               Faxback Doc. # 60725 or
                                                  listen to them manually.

Scanner will not track a  The transmission might  Scan another 
trunked system.           not use a system that   transmission.
                          can be tracked by your
                          scanner.

                          The data frequency is   Find the data frequency
                          missing.                (see "Programming
                                                  Trunked Frequencies" in
                                                  Faxback Doc. # 60724).

                          The system you are try- Set the scanner to
                          ing to track is a Type  receive Type I trunked
                          I system, and the scan- frequencies.  See
                          ner is set to scan      "Scanning Type I and 
                          type II systems.        Hybrid Trunked Systems"
                                                  in Faxback Doc. # 60725.

Scanner will not stop     The IDs you have        Scan another 
while scanning a scan     stored are not active.  transmission.
list.

Scanner will not acquire  SQUELCH is not corr-    Adjust squelch for trunk
a data channel.           ectly adjusted for      tracking.  See "Setting
                          trunk tracking.         Squelch for the Trunk
                                                  Tracking Mode," in 
                                                  Faxback Doc. # 60724.

                          The frequency used for  Add the frequency used
                          the data channel is     for the data channel to
                          missing.                the frequency list. (See
                                                  "Programming Trunked
                                                  Frequencies," in Faxback 
                                                  Doc. # 60724).

Missing replies to con-   The system you are try- Set the scanner to 
versations.               ing to track is a Type  receive Type I trunked
                          I system, and the       frequencies. See 
                          scanner is set to scan  "Scanning Type I and 
                          Type II systems.        Hybrid Trunked Systems"
                                                  in Faxback Doc. # 60724.

                          The selected fleet map  Try another preset fleet
                          is incorrect.           map or program your own
                                                  fleet map (see "Scanning
                                                  Type I and Hybrid 
                                                  Trunked Systems" in                                                      
                                                  Faxback Doc. # 60724).

                          Not all of the trunk's  Enter all of the trunk's
                          frequencies have been   frequencies.
                          entered.

Channel activity indica-  The transmission might  Scan for another
tors are flashing but no  be a private or tele-   transmission.
sound is heard.           phone interconnect call.
                          The scanner does not
                          scan these types of
                          transmissions.

                          The ID shown is not     Wait for the ID to
                          active.                 become active, or scan
                                                  another transmission.

(GLW EB 8/4/00)

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