Optimus CD-3321 User Manual

8

Insert the DC adapter’s 5.5 outer diame-
ter/2.1 inner diameter barrel plug into
the 

 jack on the back of the CD-

3321, then plug the DC adapter into
your vehicle’s cigarette-lighter socket.

Note: If the CD-3321 does not operate
when you turn it on, remove the DC
adapter from your vehicle’s cigarette-
lighter socket and check the socket for
debris. Also check the fuse in the adapt-
er and your vehicle’s fuse block.

For private listening, plug a pair of op-
tional headphones with a 

1

/

8

-inch plug

into the 

 jack. Your local Ra-

dioShack store has a wide selection of
headphones.

To protect your hearing, follow these
guidelines when you use headphones.

• Set the volume to its lowest setting

before you begin listening. After you
begin listening, adjust the volume to
a comfortable listening level.

• Do not listen at extremely high vol-

ume levels. Extended high-volume
listening can lead to permanent
hearing loss.

• Once you set the volume, do not

increase it. Over time your ears
adapt to the listening level, so a vol-
ume level that does not cause dis-
comfort might still damage your
hearing.

14-546a.fm  Page 8  Wednesday, April 7, 1999  6:57 AM