[Сталкер]

вообще то в сервис мануале написано : The number of copies made is counted.
(The counter counts up 2 for paper whose sub scan
direction exceeds 216 mm.)
The number of copies made is compared with the
value of the number of hours through which the belt
has turned translated to a corresponding value of
the number of copies made and the value, whichever
reaches the life specifications value, is
detected. (However the maximum number of copies
is detected by counting hours through which the
belt has turned.)
When the maximum number of printed pages is
reached, the print is inhibited."

В двух словах. Аппарат может заблокироваться в промежутке от 120 до 150 тыс. Так как еще много составляющих влияющих на решение о блокировке в том числе и плотность бумаги.