Failing navigation unit may display disc error on screen on Nissan 350Z

Problem Description and Possible Solution
A navigation unit that is failing can intermittently display a disc error on the screen.
Problem Data
RepairPal Verified
Average mileage: 87,666 (56,000–130,000)
3 model years affected: 2003, 2004, 2005
8 people reported this problem
Viewing 1 - 3 of 3 problem details
The nav screen goes black intermittently and the nav door does not open and close even when I run the car off
Doesn't read navi cd either
same problem. hasn't been fixed, unaware of cost...