grrrr i hav a semi digi tacho with paper charts an digi display, i recently had some work done on my truck, now the red tacho light is on the speedo, and the clock display is flashing, it needs resetting where you do something an it whirrs away an then is sorted but for the life of me cant remember how i was told to do it before ■■? open shut chart in out ■■? anybody help me out before monday lol 
Open drawer. Remove all charts including the one in the second driver position which shouldn’t be there anyway and it probably would have done it by now if it wasn’t. 
Close drawer. Let it whirr away. Open drawer when it goes quiet. Put chart in first position only. Sorted.