Detecting Id Existence - Oki OKIPAGE 8p Maintenance Manual

2.9

Detecting ID existence

In this model, a micro switch may be activated, applying a high voltage to the machine under a
state where the cover is slightly opened. In this case, there is a fear that, when a user insert his
hand through the opening, he may be shocked unless an ID has been installed. (Safety standard
measures EN60950: 1992)
Therefore, with mechanism, an interlock system for micro switch shall be added if a machine has
no mechanism with ID inside. Also, for control, ID existence detection shall be implemented
according to the following method.
<Conditions for judging ID existence>
If a toner sensor does not change for 1.2 cycle of toner sensor basic rotation cycle soon after
powering on or closing cover, no installed ID shall be judged, stopping Warming Up motion to shift
the machine mode to light malfunction. But this error can be recovered by cover open and close
operation after installing ID.
ID existence detection time
The conditions for enabling this error should be as follows.
Valid condition
Invalid condition
But when the toner sensor breaks down with 31 or more counted in total at the drum, ID not Install
will be displayed without fail at power on. Even in this case, the machine should be in printable
state so that printing can be guaranteed until the completion of toner repair. (See the drawing in
the next page)
T time
3.04 sec. As the toner sensor monitors at intervals of 40 msec.
the fractional part should be rounded down.
In the case of 31 pages or more in total drum counter
In the case of 30 pages or less in total drum counter, a significant malfunction
toner sensor error shall occur.
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Remarks