Yamaha DD-75 DD-75 Owners Manual - Page 42
Troubleshooting
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Troubleshooting Problem Cause/Solution Power suddenly and unexpectedly turns off. This is normal and the Auto Power Off function may have been activated (page 14). If desired, disable the Auto Power Off function. When the instrument is turned on, power is turned off suddenly and unexpectedly. The protection circuit has been activated due to over current. This may occur when an AC adaptor other than the one specified is used, or an AC adaptor is damaged. Use the specified adaptor (page 54) only. If it should appear to be malfunctioning, discontinue use immediately and have it inspected by qualified Yamaha service personnel. A buzz or click occurs momentarily when the instrument is turned ON or OFF This is a normal power surge noise that occurs when the POWER switch is operated. The LED display is completely dark. When the pads are struck (or pedals are pressed), the display is dark and returns to "1". The Custom Kit voice assignments or sensitivity settings of each pads and pedals have disappeared or defaulted. The batteries are low and should be replaced with a complete set of six new batteries immediately. Ideally, an optional AC adaptor should be used to power the instrument. When using a mobile phone, noise is produced. Using a mobile phone in close proximity to the instrument may produce interference. To prevent this, turn off the mobile phone or use it further away from the instrument. Noise is heard from the instrument's speakers or headphones when using the instrument with the application on iPhone/iPad. When you use the instrument along with the application on your iPhone/iPad, we recommend that you set "Airplane Mode" to "ON" on your iPhone/iPad in order to avoid noise caused by communication. No sound comes from the instrument. • The volume is set too low. Adjust the volume (page 29). • A plug is inserted into the [PHONES/OUTPUT] jack and should be taken out (page 14). • The LOCAL ON/OFF is set to OFF. Set the LOCAL ON/OFF to ON (page 40). Suddenly "FUL" appears and recording is stopped. The amount of recorded data has exceeded the limit of 7,000 notes per song. Song is automatically started when pad is struck (or pedal is pressed). Pad Start is set to ON. Set Pad Start to OFF (page 30). 42 DD-75 Owner's Manual