The SSP-800/CT-SSP Surround Sound Processor contains protection features that prevent the processor from operating at dangerously high or low voltages. These features are incorporated to help protect the processor from dangerous power surges and other power irregularities that could cause extensive damage to the processor. This circuitry guards against the following irregular supplied power conditions.
•Startup Voltage: If the AC mains voltage is NOT within a range of approximately –15% to +10% of its nominal value, the SSP does not turn on. For example, a 120V AC service generally requires the AC mains voltage to be no lower than 95V and no higher than 135V in order for the processor to turn on and operate normally.
•Over-voltage Condition during Operation: If the AC mains voltage surges by roughly 10% or more during operation, the Surround Sound Processor enters a protection mode and shuts down. The Standby LED flashes to indicate that the protection mode has been engaged. An error message also displays on the LCD touch screen.
•Under-voltage Condition during Operation: If the AC mains voltage sags by 15% or more, the Surround Sound Processor does continue to play since the voltage irregularity won’t harm the processor, but the sound quality may be degraded due to the compromised power conditions. The Standby LED flashes to indicate an irregular power condition exists.
In such cases, normal operation can only resume when the following conditions are met:
•The irregularity in the power input is no longer present.
•The SSP is power cycled, to clear the protection mode.
Refer to the Troubleshooting section found later in this manual for more information.
13
