See also:

Do-it-yourself maintenance
Do-it-yourself service precautions If you perform maintenance by yourself, be sure to follow the correct procedures as given in these sections. CAUTION: The engine compartment contains many ...

Adjusting sound quality and volume balance
Press the “TUNE/SEL” knob to enter iPod menu mode. Pressing the “TUNE/SEL” knob changes sound modes.  - About iPod • Apple is not responsible for the operation of this device o ...

What is not covered
These warranty obligations do not apply to failures or noncompliance caused by:  • The use of replacement parts not certified in accordance with aftermarket parts certification regulation ...