User manual SONY XM-GTR4A

[. . . ] fasten the ground wire securely to a metal point of the car. The voltage going into the remote terminal is too low. The connected car audio unit is not turned on. Make sure the speaker cord and ground wire are securely connected. [. . . ] In this case, relocate the amplifier away from the car audio unit or antenna. 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 reasons, keep your car audio unit volume moderate so that you can still hear sounds outside your car. When replacing the fuse, be sure to use one matching the amperage stated above the fuse holder. Never use a fuse with an amperage rating exceeding the one supplied with the unit as this could damage the unit. * Protectioncircuit This amplifier is provided with a protection circuit that operates in the following cases: -- 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 from 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 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. If you have any questions or problems concerning your unit that are not covered in this manual, please consult your nearest Sony dealer. Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) Notice for customers: the following information is only applicable to equipment sold in countries applying EU directives For any service or guarantee matters please refer to the addresses given in separate service or guarantee documents. This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. the recycling of materials will help to conserve natural resources. For more detailed information about recycling of this product, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product. Turn on or off the LPF and HPF switch at the unit rear as illustrated below. [. . . ] When using a car audio unit without a remote output on the amplifier, connect the remote input terminal (REMOTE) to the accessory power supply. Use a power supply wire with a fuse attached (60 A). All power wires connected to the positive battery post should be fused within 450 mm (18 in) of the battery post, and before they pass through any metal. Make sure that the vehicle's battery wires connected to the vehicle (ground to chassis)*2 are of a wire gauge at least equal to that of the main power wire connected from the battery to the amplifier. [. . . ]