PRO-27 20-Channel Programmable Scanner
(200-0507)                 Troubleshooting            Faxback Doc. # 31206

Your Radio Shack PRO-27 20-Channel Direct-Entry Programmable Scanner should
require very little maintenance.  If you have problems, refer to this chart
for possible solutions.  If you cannot solve the problem, contact your
local Radio Shack store for assistance.

Problem               Probable Cause            Solution

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

                      Batteries are not         Make sure the + and -
                      correctly installed.      terminals are properly
                                                aligned.

                      The optional AC or DC     Be sure the adapter is
                      power adapter is not      fully inserted into the
                      connected.                DC 12V jack.

The scanner's dis-    The batteries are weak.   Replace the non-
play dims and the                               rechargable batteries, or
scanner sounds a                                recharge the Ni-Cd
tone every 15-30                                rechargeable batteries
seconds.
                      The AC or DC adapter      Be sure the adapter is
                      used does not provide     set to provide no less
                      the required 12 Volts     than 12V DC.
                      DC.

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

                      Programmed frequencies    Avoid programming
                      are the same as Birdie    frequencies listed under
                      frequencies.              "Birdie Frequencies," or
                                                only select them manually.

                      Environment is not        Relocate the scanner
                      suitable for reception    and try again.
                      by the scanner.

                      Batteries are weak or     Replace them with new ones
                      dead.                     or recharge the Ni-Cd
                                                batteries.

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

Keyboard does not     The keylock function is   Press KEYLOCK until
work.                 activated.                K/L disappears from the
                                                display to turn off the
                                                keylock.

Keys do not work or   Undetermined error.       Reset the scanner (see
display changes at                              "Resetting the Scanner,
Faxback Doc.  #").
random.

Scanner is on, but    The SQUELCH control is    Adjust the SQUELCH control
will not scan.        not correctly adjusted.   clockwise (see "Setting
                                                the Volume and Squelch").


(SP 3/12/96)