The heater temperature is controlled based on the 8-bit digital data obtained by performing serial communication with the high-voltage power supply unit taking

into account the system status, paper size, paper source, and setting menu.

This system drives the drum motor and resist motor to feed paper before the fusing temperature is reached, thus starting printing as soon as possible after call

termination. If fusing is started immediately after the fusing temperature is reached, paper is liable to be wrinkled because of an overshoot.

To prevent this, fusing on the first sheet is started at a temperature lower than the normal fusing temperature.

If an attempt is made to turn on/off the heater at an AD conversion value to maintain the temperature at a certain level, the heater may be turned on and off

repeatedly due to AD conversion accuracy or noise, overloading the halogen lamp. To prevent this, the temperature at which the heater is turned on is separated

far from the temperature at which the heater is turned off.

(BPX) for any updates to this material. (http://bpx.okidata.com)

Service Guide OKIFAX 5750/5950

Chapter A Board Descriptions

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