Additional Information; Precautions; Maintenance; Fuse Replacement - Sony XM-GS4 Operating Instructions Manual

Additional Information

Precautions

 This unit is designed for negative ground (earth)
12 V DC operation only.
 Use speakers with an impedance of 2 to 8 Ω (4 to
8 Ω when used as a bridging amplifier).
 Do not connect any active speakers (with built-in
amplifiers) to the speaker terminals of the unit.
Doing so may damage the active speakers.
 Avoid installing the unit in areas subject to:
 high temperatures such as from direct sunlight
or hot air from the heater
 rain or moisture
 dust or dirt.
 If your car is parked in direct sunlight and there is
a considerable rise in temperature inside the car,
allow the unit to cool down before use.
 When installing the unit horizontally, be sure not
to cover the fins with the floor carpet, etc.
 If this unit is placed too close to the car audio unit
or antenna (aerial), interference may occur. In this
case, relocate this unit away from the car audio
unit or antenna (aerial).
 If no power is being supplied to the car audio
unit, check the connections.
 This power amplifier employs a protection circuit*
to protect the transistors and speakers if the
amplifier malfunctions. Do not attempt to test the
protection circuits by covering the heat sink or
connecting improper loads.
 Do not use the unit on a weak battery as its
optimum performance depends on a good power
supply.
 For safety, keep your car audio unit volume
moderate so that you can still hear other sounds.
* Protection circuit
This amplifier is provided with a protection circuit that
operates in the following cases:
 when the unit overheats
 when a DC current is generated
 when the speaker terminals are short-circuited.
The illumination indicator will change from white to
red, and the unit will shut down. If this happens, take
out the cassette tape or disc, turn off the connected
equipment, and determine the cause of the
malfunction. If the unit has overheated, wait until it
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.

Maintenance

Fuse Replacement

When replacing the fuse, be sure to use one
matching the amperage stated above the fuse
holder. If the fuse blows, check the power
connection and replace both the fuses. If the fuse
blows again after replacement, there may be an
internal malfunction. In such a case, consult your
nearest Sony dealer.
Warning
Never use a fuse with an amperage rating
exceeding the one supplied with the unit as this
could damage the unit.
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