11
Using Standard AC Power
You can power the scanner from a standard AC outlet using an option-
al AC adapter (such as Cat. No. 273-1665).
Warning:
 Do not use an AC adapter’s polarized plug with an extension
cord, receptacle, or other outlet unless the blades can be fully inserted
to prevent blade exposure.
Cautions:
• The recommended AC adapter supplies 9 volts and delivers at
least 300 milliamps. It has a barrel plug with a center negative tip
that correctly fits the scanner’s 
POWER
 jack. Using an adapter that
does not meet these specifications could damage the scanner or
the adapter.
• To protect your scanner and AC adapter, always plug the adapter
into the scanner before you plug it into the AC outlet, and always
unplug the adapter from the AC outlet before you unplug it from
the scanner.
• If batteries are installed, make sure 
ALKALINE  JACK  NI-CD
 is
set to the correct position (see “Using Internal Batteries” on
Page 8).
1. Turn 
VOLUME
 counterclockwise until it clicks to make sure power
is turned off.
2. Plug the adapter’s 3.4 mm outside diameter/1.3 mm inside diame-
ter barrel plug into your scanner’s 
POWER
 jack. 
3. Plug the other end of the adapter into a standard AC outlet.
20-513.fm  Page 11  Wednesday, August 4, 1999 2:39 PM