I have Avic-D1 and I had problems with screen (everything works but screen was only black). Maybe there was some text but i couldn`t see what it was.
- You need Service manual for fixing this (http://www.eserviceinfo.com/downloadsm/ ... IC-D1.html)
- You need also some solder skills
- also you need to know how to measure resistanse
Open AVIC
-> Remove System unit (see manual)
-> On the system unit is black light fuses (below) (see manual)
measure Fuse FU1821, if resistanse is near 0 -> OK (bigger problem)
If Resistanse is infinity -> change fuse or sold it fogether
There is also few other fuse on System unit (both sides), you can also measure those components easily ( Fuses are FU xxxx ), if 1820 wasn`t broken.
If you have black screen problem, this may helps you. This helps me.
thnx.