User manual ACOUSTIC RESEARCH A-04 service manual

[. . . ] Printed on 100 % recycled paper using VOC (Volatile Organic Compound)-free vegetable oil based ink. Before operating the unit, please read this manual thoroughly and retain it for future reference. Although this system is magnetically shielded, there may be cases that the picture on some TV sets/personal computers may become magnetically distorted. [. . . ] In such a case, turn off the power of the TV set/personal computer once, and after 15 to 30 minutes turn it on again. In the case of a personal computer, take appropriate measures, such as data storage, before turning it off. When there seems to be no improvement, locate the system farther away from the TV set/personal computer. Furthermore, be sure not to place objects in which magnets are attached or used near the TV set/ personal computer, such as audio racks, TV stands, toys etc. These may cause magnetic distortion to the picture due to their interaction with the system. The brightness of the OPERATE indicator may become unstable when the volume is turned up. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. To reduce the risk of fire, do not cover the ventilation of the apparatus with newspapers, table-cloths, curtains, etc. Set the AC main switch on the subwoofer (on the back) to ON, and then set the OPERATE switch on the left satellite speaker to ON. When the power of the subwoofer is turned off, the system does not operate, even if the OPERATE is set to ON. The unit is not disconnected from the AC power source (mains) as long as it is connected to the wall outlet, even if the unit itself has been turned off. â· Unplug the system from the wall outlet if it is not to be used for an extended period of time. Should any liquid or solid object fall into the system, unplug the system's power cord and have the system checked by qualified personnel before operating it any further. â· The AC power cord should be changed only at a qualified service shop. â· For efficient heat dissipation, ensure there is sufficient space to the rear of the subwoofer. Do not insert your hand or any objects into the hole of the subwoofer and satellite speaker. [. . . ] â· For efficient heat dissipation, ensure there is sufficient space to the rear of the subwoofer. Do not insert your hand or any objects into the hole of the subwoofer and satellite speaker. Do not drive the speaker system with a continuous wattage exceeding the maximum input power of the system. [. . . ]