Radio Shack MPA 31 Owner's Manual page 10

Cautinn:
• Your vehide must have a negative-
ground dectrical system. If you are
unsure about what type of electrical
system your vehide has, ask your ve-
hide dealer.
• Disconnect the AC conj before you
connect tiie DC power cable.
To use 12-vott DC power, connect the
supplied DC power cable's small end to
the ampfifier's 12V NEGATIVE GND
jack. Then connect the cable's other
end to your vehide's cigarette-lighter
socket.
Replacing the DC Cable's
Fuse
The cable's 4A, 125-volt in-line fuse
protects your ampfifier from voltage
surges. If tfie ampfifier's power indicator
does not light when you press POWER,
check the fuse. If it is btown, replace it
with a 4-amp, 125-volt fuse (such as
Cat. No. 270-1010, not supplied).
To replace ttie fuse, unscrew ttie tip of
tiie dgarette-lighter plug. Then remove
the old fuse and insert tfie new fuse.
Secure tiie fuse by reattedwig the
plug's tip.
Replacing the Amplifier's
Fuse
The fuse (located on ttie back of ttie
ampfifier) protects your ampfifier from
power (vottage or cunrent) surges. If ttie
POWER Hidicator does not light wfien
you press POWER, tiie fuse might be
btovm.
Cautfanu Use only an identical 5 x 20
mm, fast-acting, 2-amp, 250-volt fuse
(such as Cat. No. 270-1052).
Foflow these steps to replace tiie ampfi-
fier's fuse.
1. Unpfijg the ampfifier's power cord.
2. Usang a tiatislade saewdriver, push
and tijm tiie fuse holder's cap coun-
terdockwise untfl tfie fijse holder
pops out.
3. Remove ttie fuse holder and repbce
ttie fuse.
4. Usrig a flatt}lade saewdriver, push
and tijm ttie fuse holder's cap fuOy
dockwise to replace it.
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