PRO-75 200-Channel Portable Scanner
(200-0312B)                Troubleshooting            Faxback Doc. # 59445

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 CAUSES           REMEDIES

Scanner is totally     The batteries are dead.   Replace the batteries  
inoperative.                                     with fresh ones, or
                                                 recharge the rechargeable
                                                 batteries or the battery
                                                 pack.

                       The optional AC or DC     Be sure the adapter is 
                       power adapter is not      fully inserted into the
                       connected.                PWR/DC 9V Jack.

Poor or no reception.  Improperly connected      Be sure the antenna is 
                       antenna.                  properly connected.

                       Programmed frequencies    Avoid programming 
                       are the same as birdie    frequencies listed under
                       frequencies.              "Birdie Frequencies" in
                                                 Faxback Doc. # 17653 or
                                                 only select them manually

Error appears on the   Programming error.        Reprogram the frequency 
display.                                         correctly.

Keypad does not work.  Keylock is turned on.     Turn off keylock.

Keys do not work or    Undetermined error.       Turn the scanner off then
display changes.                                 on again, or reset the
                                                 scanner (see "Resetting/
                                                 Initializing the Scanner"
                                                 below).

Scanner is on but      SQUELCH is not correctly  Adjust SQUELCH clockwise 
will not scan.         adjusted.                 (see "Turning on the
                                                 Scanner and Setting
                                                 Squelch" in Faxback Doc.
                                                 # 59443).

In the scan mode,      Birdies.                  Avoid programming 
the scanner locks on                             frequencies listed under 
frequencies that have                            "Birdie Frequencies" in
an unclear transmis-                             Faxback Doc. # 17653 or
sion.                                            only listen to them 
                                                 manually.

Resetting/Initializing the Scanner

If the scanner's display locks up or does not work properly after you 
connect a power source, you might need to reset or initialize the scanner.

IMPORTANT:  If you have problems, first try to reset the scanner (see
            "Resetting the Scanner," below).  If that does not work, you
            can initialize the scanner (see "Initializing the Scanner"
            below); however, this clears all information stored in your
            scanner's memory.

Resetting the Scanner

1.  Turn off the scanner, then turn it on again.

2.  Insert a pointed object, such as a straightened paper clip, into the
    reset opening on the side of the scanner and gently press then release
    the reset button inside the opening.

Note: If the scanner still does not work properly, you might need to 
      initialize the scanner (see "Initializing the Scanner," below).

Initializing the Scanner

IMPORTANT: This procedure clears all information you stored in the
           scanner's memory.  Initialize the scanner only when you are
           sure the scanner is not working properly. 

1.  Turn off the scanner, then turn it on again.

2.  Hold down MON/CL.

3.  While holding down MON/CL, insert a pointed object, such as a 
    straightened paper clip, into the reset opening on the side of the
    scanner and gently press then release the reset button inside the
    opening.  The display should clear.

4.  When the display reappears, release MON/CL.

Note: You must release the reset button before releasing MON/CL, otherwise
      the memory might not clear.

(BR EB 4/21/00)

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