I installed new head "yellow " in my RS 640
after save the serial number in "head rank "
machine doesn't work it' show error message "wrong head is installed "
not- i bought this head from roland home
i check the serial two time it was correct
also replace with another head but same problem
i removed the all cable cards for all heads and i removed the carriage board but the message still
machien work without problem only in service menu
please i wait your help
after save the serial number in "head rank "
machine doesn't work it' show error message "wrong head is installed "
not- i bought this head from roland home
i check the serial two time it was correct
also replace with another head but same problem
i removed the all cable cards for all heads and i removed the carriage board but the message still
machien work without problem only in service menu
please i wait your help