2009 Mazda CX-9 Owner's Manual - Page 325

Interior Comfort Rear Entertainment System CAUTION Ø If the battery power is depleted the headphones will not operate properly. If any of the following occurs, replace the batteries. Ø The power indicator does not illuminate even when the power is turned on. Ø Noise is mixed with the sound. Ø The reception range narrows. Ø Periodically inspect the batteries for leakage. Ø If the headphones are not to be used for an extended period, remove the batteries. Ø Be careful not to allow the battery case screw to become loose. Ø Install the batteries with the ( )/( ) poles correctly positioned. Battery leakage could occur if they are not installed correctly. Ø When replacing the batteries, be careful not to bend the electrical terminals or get oil on them. Ø Be careful not to allow dirt to get into the headphones as it could damage them. The following points regarding the battery must be observed. If the batteries are not handled properly, it could result in a headphone malfunction. Ø Do not use rechargeable batteries. Ø When replacing the batteries, replace both batteries at the same time. Do not use a new battery and an old battery, or the different types of battery. 6-85