Oki B930 Service Manual

Also see for B930 Series: Setup guide Brochure & specs Safety information Installation instructions Installation instructions

Contents

2-18ROS ControlRotation of ROS MotorThe ON/OFF control of the ROS Motor is performed according to the mode of operation asshown below.Determination of ROS ReadyThe ROS goes into ready state after the specified period passes since the reception of the ROSMPA start signal and the SOS cycle exceeds the reference value.ROS Reference ValueFuser ControlFuser Control MethodThe ON/OFF control of the Main/Sub Heater Rods is performed based on the Fuser control tem-perature. The Fuser transits between the five states (Warm UP, Ready, Standby, Print, and LowPower) depending on the Heat Roll surface temperature or printer conditions.The Fuser temperature control starts when the Fuser Ready in the POWER UNIT is turned ONafter a preset time period has passed from power ON. If a failure occurs, the Heater Rods areturned OFF, then the Fuser Ready is turned OFF, and then the Fuser temperature control isstopped.Main/Sub Heater Rods ON/OFF ControlThe Center and Rear Thermistors detect the Heat Roll surface temperature (Fuser temperature)to regulate the temperature at the target control temperature by turning ON or OFF the Main/SubHeater Rods.Fuser Warm-upA3 SEF ON OFF ON ON OFFB5 LEF/Executive LEF ON ON OFF OFF ON8K SEF(TFX/GCO) ON ON OFF ON OFFB4 SEF ON ON OFF ON ON8.5" x 11"LEF ON ON ON OFF OFF16K LEF(TFX/GCO) ON ON ON OFF ON11" x 17"LEF ON ON ON ON ONOperation mode ROS Motor ON/OFFStandby mode Always OFFPrint modeTurns ON upon receiving the signal from thecontroller, and turns OFF after a preset time haspassed from the end of printing. Also turns OFFif a print command is not received within 30 sec-onds from the reception of the signal.Sleep mode Always OFFROS reference value DescriptionReady reference value SOS signal interval (equivalent to 98% or more of the rated rpm ofthe ROS Motor)Fail reference value SOS signal interval (less than 98% of the rated rpm of the ROSMotor)