Sequence of operation
The DC controller in the engine-control system controls the operational sequences of the product.
The following table describes durations and operations for each period of a print operation from the
time the product is turned on until the motor stops rotating.
Normal sequence of operation
NOTE: The following sequence of operation applies to the engine portion of the product.
Table 1-1 Sequence of operation (product base)
Name Timing Purpose
Waiting From the time the power is turned on or
when the product exits Sleep mode until
the product is ready for printing
●
Pressurizes the fuser pressure roller
●
Detects the toner cartridges and imaging drums
●
Detects the home position for the intermediate-transfer
belt (ITB) and the developing unit
●
Cleans waste toner from the ITB
Standby From the end of the waiting sequence or
the last rotation until the formatter
receives a print command or until the
product is turned off
●
The product is in the ready state
●
Awaits print reservation command (await INTR sequence)
●
Enters Sleep mode after the specified length of time
●
Calibrates if it is time for an automatic calibration
Initial rotation From the time the formatter receives a
print command until the paper enters the
paper path.
●
Activates the high-voltage power supply
●
Prepares each laser/scanner unit
●
Warms the fuser to the appropriate temperature
Printing From the time the first sheet of paper
enters the paper path until the last sheet
has passed through the fuser
●
Forms the image on the photosensitive drums
●
Transfers the toner to the paper
●
Fuses the toner image onto the paper
●
Performs calibration after a specified number of pages
Last rotation From the time the last sheet of paper
exits the fuser until the motors stop
rotating
●
Moves the last printed sheet into the output bin
●
Stops each laser/scanner unit
●
Discharges the bias from the high-voltage power supply
ENWW Basic operation 3
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