Sequence of operation
The DC controller PCA controls the operating sequence, as described in the following table.
Table 1-1 Sequence of operation
Period Duration Description
Waiting From the time the power is turned on, the door is
closed, or when the printer exits Sleep mode until the
printer is ready for printing.
●
Heats the fuser lm in the fuser
●
Detects the toner cartridge
●
Rotates and stops each motor
●
Rotates and stops each fan
●
Cleans the transfer roller
Standby From the end of the waiting sequence or the last
rotation until the formatter receives a print command,
or until the printer is turned o.
●
Is in the Ready state
●
Enters Sleep mode if the formatter sends the
sleep command
●
Rotates and stops each fan
Initial rotation From the time the formatter receives a print command
until the paper enters the paper path.
●
Rotates each motor
●
Rotates each fan
●
Activates the high-voltage power supply (high-
voltage bias)
●
Prepares the laser/scanner unit
●
Warms the fuser to the correct temperature
Printing From the time the rst sheet of paper enters the paper
path until the last sheet passes through the fuser.
●
Forms the image on the photosensitive drums
●
Transfers the toner to the paper
●
Fuses the toner image onto the paper
Last rotation From the time the last sheet of paper exits the fuser
until the motors stop rotating.
●
Stops each motor
●
Stops each fan
●
Stops the high-voltage power supply (high-
voltage bias)
●
Stops the laser/scanner unit
●
Turns the fuser heater o
●
If another print command is received, the printer
enters the initial rotation period when the last
rotation is complete.
4 Chapter 1 Theory of operation ENWW
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