Sony XM-404EQX Operating Instructions Manual page 7

*Protection circuit
This amplifier Is provided with a protection circuit that
activates in the following eases:
-- when the unit is overheated
-- when a DC current Is generated
-- when the speaker terminals are short circuited.
The color of the POWER/PROTECTOR indicator will change
frorn green to red, and the unit will shut down.
If this happens, turn off the connected equipment, take out the
cassette tape or disc, and determine the cause of the
malfunction. If the amplifier has overheated, wait until the
unit cools down before use.
If you have any questions or problems concerning
your unit that are not covered in this manual, please
consult your nearest Sony dealer.
Caution
• Before making any connections, disconnect the
ground terminal of the car battery to avoid short
circuits.
• Be sure to use speakers with an adequate power
rating. If you use small capacity speakers, they
may be damaged.
• Do not connect the _ terminal of the speaker
system to the car chassis, and do not connect the
terminal of the right speaker with that of the
left speaker.
• Install the input and output cords away from the
power supply lead as running them close
together can generate some interference noise.
• This unit is a high-power amplifier. Therefore, it
may not perform to its full potential if used with
the speaker cords supplied with the car.
• If your car is equipped with a computer system
for navigation or some other purpose, do not
remove the ground wire from the car battery. If
you disconnect the wire, the computer memory
may be erased. To avoid short circuits when
making connections, disconnect the +12 V power
supply lead until all the other leads have been
connected.
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