Bose/Clarion PN2090D Service Manual

Hi all, I am looking for a Clarion PN2090D Service Manual with schematic. My 94' Maxima has a Bose system (Manufactured by Clarion)that keeps loosing the sound intermittently for days at a time. I am specifically looking for a internal schematic. I will purchase this item if someone has one they would like to sell or sell a copy of. Thanks.

I just got my bose head unit repaired by a electronic shop that fixed Clarion Products. It cost me $250.00 which was a flate fee. However, the head unit still didn't work. Apperently I had a burned wire. They had to run an alternate power source from the rear speaker to the front of my car. My head unit also started to fade in and out and then just went on me. So, try to check the connection wires with a tester first to see if you get any bad reading.