Sequence of operation The DC controller in the engine-control system controls the operational sequences of the product. The table below describes durations and operations for each period of a print operation from when the product is turned on until the motor stops rotating. Normal sequence of operation Table 1-1 Sequence of operation Name Timing Purpose WAIT From the time the power switch is turned on, the door is closed or the product exits Sleep mode until the product gets ready for a print operation. Brings the product to ready state. The product performs the following during the operations:
● Detects the print cartridge ● Heats the fuser film in the fuser ● Rotates, and the stops, the main motor STBY (standby) From the end of the WAIT or LSTR period until either a print command is sent or the power switch is turned off. Maintains the product in printable condition. The product performs the following during the operation: ● Enters Auto-Off mode if Auto-Off command is received INTR (initial rotation) From the time a print command is received until the paper is picked up. The product performs the following during the operations:
● Drives the main motor ● Activates the high-voltage power supply ● Activates the laser/scanner ● Warms the fuser heater PRINT From the end of the INTR period until the last sheet completes the fuser operation. Forms the image on the photosensitive drum based on the VIDEO signals from the formatter. Transfers and fuses the toner image to the paper. LSTR (last rotation) From the end of the PRINT period until the main motor stops rotating. Moves the last printed sheet out of the product. The product performs the following during the operations:
● Stops the main motor ● Deactivates the high-voltage power supply ● Deactivates the laser/scanner ● Deactivates the fuser heater The product enters the INTR period as the LSTR period is completed, if the formatter sends another print command. ENWW Basic operation 3