User manual ROTEL RMB-1506

[. . . ] WARNING: To reduce the risk of fire or electric shock, do not expose the unit to moisture or water. If the unit is exposed to moisture, or a foreign object gets into the enclosure, immediately disconnect the power cord from the wall. Take the unit to a qualified service person for inspection and necessary repairs. Read all the instructions before connecting or operating the component. [. . . ] It is your best record of the date of purchase, which you will need in the event warranty service is ever required. AC Power Input Your RMB-1506 is configured at the factory for the proper AC line voltage in the country where you purchased it (USA: 120 volts/60 Hz, Europe: 230 volts/50 Hz). Be sure the power switch on the front panel of the RMB-1506 is turned off. Then, plug one end of the cord into the AC power connector on the back panel of the amplifier. If you are going to be away from home for an extended period of time, it is a sensible precaution to unplug your amplifier. To turn the amplifier on (or to activate either of the optional automatic poweron modes), push the switch in. The indicator light around the switch will light, indicating that the amplifier is turned on. To turn the amplifier off, push the button again and return it to the out position. Instead, the protection circuit monitors the temperature of the output devices and shuts down the amplifier if temperatures exceed safe limits. In addition, the RMB-1506 includes overcurrent protection which operates only when load impedance drops too low. Should a faulty condition arise, the amplifier will stop playing and one or more of the PROTECTION LEDS on the front panel will light. If this happens, turn the amplifier off, let it cool down for several minutes, and attempt to identify and correct the problem. There are independent PROTECTION LEDS for each pair of channels which may help in troubleshooting the cause of the problem. When you turn the amplifier back on, the protection circuit will automatically reset and the PROTECTION LEDS should go out. In most cases, the protection circuitry activates because of a fault condition such as shorted speaker wires, or inadequate ventilation causing an overheating condition. In very rare cases, highly reactive or extremely low impedance speaker loads could cause the protection circuit to engage. The RMB-1506 provides three different options for manual or automatic power on/off operation. These modes are selectable using a three-position slide switch on the back panel as follows: · With the switch in the OFF position, the amplifier is turned on or off manually using the front panel power switch. Also use this mode if you are using a switched AC outlet to control power to the amplifier. With the switch in the SIGNAL SENSE position, the amplifier turns on automatically when a signal is detected at the inputs. The amplifier will go into standby mode several minutes after no signal is no longer present. Turning the switch OFF cuts power to the amplifier, regardless of whether or not a signal is present. [. . . ] Most difficulties in audio systems are the result of poor or wrong connections, or improper control settings. If you encounter problems, isolate the area of the difficulty, check the control settings, determine the cause of the fault and make the necessary changes. If you are unable to get sound from the RMB-1506, refer to the suggestions for the following conditions: Rotel reserves the right to make improvements without notice. If using signal sensing auto power-on, make sure that a signal is present at the inputs. [. . . ]