Detecting Id Existence - Oki OKIPAGE 8z Service 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 below).
Service Manual for OKIPAGE 8z
Chapter 2 Operation Description
T time Remarks
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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