PRO-23
(200-0104)                 Care and Maintenance       Faxback Doc. # 39635


The PRO-23 is a ruggedly built electronic unit with all parts
conservatively rated.  However, you should treat it with care; don't
subject it to excessively rough handling.  You can find it will give you
long life it kept free from dirt and excessive humidity.

If the sound becomes weak and distorted, it is time for new batteries.
We recommend alkaline batteries, Catalog Number 23-552.  Or, use our
E N E R C E L L rechargeable batteries 23-125) - you can recharge them
hundreds of times.  You can charge them while in the unit; just connect
20-189 to the CHR jack.  Or, you can charge them out of the unit by
using out 23-122 or 23-133.  If you do not intend to use the PRO-23
for a few weeks, it is best to remove the batteries.  Also, never leave
weak or dead batteries in the unit.

WARNING

The PRO-23 is designed to operate from four penlight (AA) batteries
(connected in series), or an external source of +6 volts DC (negative 
ground).  If it fails to operate, and there is no clear reason for the
failure, first check the batteries.  Before you try connecting the PRO-23
to an external 6-volt DC power supply, check the voltage polarity.
Attempting to operate the negative ground PRO-23 from a positive ground
electrical system may damage it.  The Radio Shack Warranty does not apply
to any damage caused by improper power connections or the damage caused
by misuse or neglect.

(LB/km-05/20/1997)

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