TD sensor (µ sensor) Initial Setting When a New PCDU Is Installed

When a new PCDU is set in the mainframe, this is detected by the machine as a new PCDU, and the initial µ count (the output from the TD sensor (µ sensor) of initial developer setting) is determined after entering the TD sensor (µ sensor) initial setting mode. The TD sensor (µ sensor) initial setting is done as follows.

• Starting the developer initial setting
  The new unit detecting mechanism performs the TD sensor (µ sensor) initial setting.
• Developer Agitation
  The developer is stirred, with the development roller and the transport coil rotating (30 seconds).
• Initial µ Count Detection
  The machine detects the TD sensor (µ sensor) output while mixing the developer, and stores the output as the initial µ count. 
• SP3-030-061 Initial µ count (Line speed 1)
• Vt Calculation
  The machine refers to the initial µ count with the above SP according to the machine type and calculates Vt with the difference of the present µ count.
• If the initial µ count detected is out of the upper/lower output limit, the machine displays a TD sensor (µ sensor) calibration error (SC360-01).
• After replacing a PCDU and performing the initial TD sensor (µ sensor) setting, the machine forcibly executes the process control.