OKI B8300

[bojans]

HI friends
I have two OKI B8300

I've lost SM for this model

First one displays: L6-10 which i believe is code for laser. I solved this problem once but can't remember how... Any idea?

Second displays: Change Developer Unit. How can I enter diagnostic and reset this.

[bojans]

I've found it/

Entering PCU Diagnostic Mode: Hold Menu and OK button while powering ON machine.

Reset Developer Unit: When in diagnostic press Menu button until you find Counter Display. Press menu button and the Back/C button at same time, this will put printer into the feed counter clear mode. Press up or down arrow until you find Developer counter clear. Then press OK. Arrow up '"YES", OK green data light will flash. Turn off. This way you can reset everithing.

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