Dear Apichart-san,
Sorry to keep you wait our reply.
We are considering there is a possibility of malfunction below parts.
P/N 6500289 Touchscreen TP-3854S1F1 JPY 24,000
P/N 640637 MMI board set JPY 280,000
I talked with Okuda-san, we would like to reccomend to return the unit to Japan,
since we think that it might be difficult to identify the malfunction parts on your site.