PRO-2050 VHF/UHF/Air/800 MHz 300-Channel Trunk Tracker Home Scanner
(200-0430A)                Troubleshooting            Faxback Doc. # 61198

If your scanner is not working as it should, these suggestions might help
you eliminate the problem. If the scanner still does not operate properly, 
take it to your local RadioShack store for assistance.

Problem                 Possible Cause              Remedy

Scanner is on but       SQUELCH is not correctly    Adjust SQUELCH
will not scan.          adjusted.                   clockwise.

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

Scanner is totally      No power.                   Make sure the scanner 
inoperative.                                        is plugged into a
                                                    working AC or DC
                                                    outlet.

                        The AC or DC adapter is     Be sure the adapter's
                        not connected.              barrel plug is fully
                                                    inserted into the DC
                                                    12V jack.

                        The scanner must be reset.  Reset the scanner (see
                                                    "Resetting the
                                                    Scanner" below).

Poor or no reception    An antenna is not conn-     Make sure an antenna
                        ected or connected in-      is connected to the 
                        correctly.                  scanner.

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 "birdie"    frequencies listed
uencies that have an    frequencies.                under "Birdie 
unclear transmission.                               Frequencies" on
                                                    Faxback Doc. # 61196
                                                    or only listen to them
                                                    manually.

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

                        The data frequency is       Find the data 
                        missing.                    frequency (see
                                                    "Programming Trunked
                                                    Frequencies" on 
                                                    Faxback Doc. # 61195.

                        The system you are trying   Set the scanner to
                        to track is a Type I sys-   receive Type I trunked
                        tem, and the scanner is     frequencies.  See
                        set to scan Type II sys-    "Scanning Type I and 
                        tems.                       Hybrid Trunked 
                                                    Systems" on Faxback
                                                    Doc. # 61195

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

Scanner will not        SQUELCH is not correctly    Adjust squelch for
acquire a data channel. adjusted for trunk track-   trunk tracking.  See
                        ing.                        "Setting Squelch for
                                                    the Trunk Tracking
                                                    Mode" on Faxback Doc. 
                                                    # 61195.

                        The frequency used for the  Add the frequency used
                        data channel is missing.    for the data channel
                                                    to the frequency list.
                                                    (see "Programming
                                                    Trunked Frequencies"
                                                    on Faxback Doc. # 
                                                    61195).

Missing replies to      The system you are trying   Set the scanner to
conversations.          to track is a Type I sys-   receive Type I trunked
                        tem, and the scanner is     frequencies.  See
                        set to scan Type II sys-    "Scanning Type I and
                        tems.                       Hybrid Trunked
                                                    Systems" on Faxback 
                                                    Doc. # 61195.

                        The selected fleet map is   Try another preset
                        incorrect.                  fleet map or program
                                                    your own fleet map
                                                    (see "Scanning Type I
                                                    and Hybrid Trunked
                                                    Systems" on Faxback 
                                                    Doc. # 61195).

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

Channel activity indi-  The transmission might be   Scan for another
cators are lighting     a private or telephone      transmission.
but no sound is heard.  interconnect call.  The 
                        scanner does not scan these
                        types of transmissions.

                        The ID is locked out.       Unlock the ID (see
                                                    "Unlocking a Single
                                                    ID" or "Unlocking all
                                                    IDs" on Faxback Doc.
                                                    # 61195).

Resetting The Scanner

You might need to reset the scanner if any of the following occur:

  The scanner's display locks up.

  The scanner does not work properly after you connect power.

  The scanner is dropped or subjected to a physical or electrical shock.

CAUTION:  This procedure clears all the information you have programmed
          into the scanner.  Use this procedure only when you are sure
          your scanner is not working properly.

1.  Turn off the scanner.

2.  While you press and hold down 2 and 9, turn on the scanner.

Note: It takes about 10 seconds until the reset is completed.  CLEAr
      appears during resetting.

CAUTION: Do not turn off the scanner while you reset it.

(GLW EB 8/22/00)

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