Originally Posted by
mterrero
If I power off and let the machine rest for a couple of hours, the back side is ok..
When you power it back on once the fusing unit has cooled to below 100 C, Process Control is executed. 1. Potential sensor is calibrated.
2. Drum starts first rotation after fusing temperature reaches 140 C.
3. Readout from the potential sensor is used to adjust:
• Development bias (Vb)
• Grid voltage (Vg)
• Laser diode (LD) power.
NOTE: This step occurs only if process control is enabled with SP3901 (Auto
Process Control On/Off Setting). If this SP is disabled, then:
• Development bias is set to the value stored in SP 2201 001
• Grid voltage is set to the value stored in SP 2001 001
• Laser power is set to a fixed value
4. ID sensor is calibrated (Vsg).
5. TD sensor is calibrated (Vref).
NOTE: These calibrations are used to determine toner supply, so it is very
important that the developer be initialized with SP2963 (Installation
Mode) at installation and with SP2801 (TD Sensor Initialization) when
the developer is replaced.
If during Processor Control it i s determined that toner concentration is low, toner replenishment id then done. Process Control can be ran manually at any time with SP 2962.
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