6607 bill acceptor on an MKVI is acting up. I booted the machine up, and the bill validator bezel was dark. Ie would not accept any bills. I cleaned the optics and electrical contacts, but nothing changed. After the machine was shut down for a few hours, I rebooted it again. The BV bezel runway lights were back on. I put a $1 in, and it took the bill adding the dollar to the existing credits. Any other denomination bill is rejected with the message "Bill rejected - Amount would exceed bill acceptor limit".
Any ideas on how to resolve this?