Toyota Repair: Dash Bulbs, factory warranty, toyota dealer

Question
I have a 2002 Sienna and the temperature control bulb(s) seem to be burnt out.  How do I remove (w/o damaging) the unit to replace the bulb(s)?  
I've been searching the internet for a diagram and cannot find one.  

Thanks.
Rob  

Answer
Have you checked with the toyota dealer, the warranty on electrical components is 3yrs/36,000 miles, it may still  be covered under the factory warranty, if not , let me know and I can send you an illustration and instructions, please provide an email address.