Chapter 77-6T-7-4- The following is the sequence of operation at time of warm-up:F-7-6The sequence and particulars of potential control are as follows:[1] copier potential control: VD = 8 times max.; VL1 = 8 times max.; VL2 = once[2] printer potential control: VD = 8 times max.; VL1 = 8 times max.; VL2 = onceSERVICE MODE:COPIER>OPTION>BODY>PO-CNT (enable/disable potential control)0: disable potential control1: enable potential control- The following settings may be made for potential control executed 10 min and 60 min after the main power switch is turned on and when the door isopened and closed: COPIER>OPTION>BODY>PO-CNTMD:[1] off (default): disable potential control[2] short mode: decrease the length based on potential attained by executing either of the 2 modes[3] standard mode: execute both copier and printer potential control in succession- Short Mode (as selected in service mode)The machine executes one of the 2 potential modes, and makes an assumption for the other mode.For warm-up after power-on, the machine refers to the primary current level, laser output level, and developing bias DC level for both copier potentialcontrol and printer potential control, thereby computing and saving the resulting rate.In the course of potential control after power-on, the machine executes one of the 2 potential control modes, thus computing the other in relation to the rateit obtained at time of power-on and after power-on.The following is the sequence of operation used for short mode:F-7-7- Standard Mode (as enabled in service mode)The machine executes both copier potential control and printer potential control in succession.10 min and 60 min after the main power switch is turned onPurpose to control sensitivity, thus making up for changes in drum temperatureto accommodate changes in charging efficiencyOperating conditions - start of the 1st job 10 min and 60 min after the main powerswitch has been turned on- the door is opened and closedOperation length off: is not executed (default)short mode: about 5 secstandard mode: about 10 secservice mode settings may be OFF, short, or standard as determined by the following:COPIER>OPTION>BODY>PO-CNTMDDefault OFFWMUPRWMUP STBYFixing assembly temperature 195 C 200 CDrum motor (M1)Primary chargingLaserPotential sensorPrinter potential control [2]Copier potential control [1]VD VD VD VL1 VL2VL1 VDVD VD VL1 VL2VL1Sets a constant level for both copierand printer potential controlCopierpotentialcontrolPrinterpotentialcontrolFixing assembly temperature(fixing assembly warm-up complete)Control panel power switch ONStart key ONPotential control Potential controlStart key ON10 min later to lessthan 60 min 60 min laterAssumes a potential level for the otherbased on the resultof copier or printerpotential controlAssumes a potentiallevel for the otherbased on the resultof copier or printerpotential control
