HP LaserJet M1319 Service Manual - Page 58
Sequence of operation, product base, Operational theory
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Sequence of operation, product base Table 5-2 Basic sequence of operation, product base Period Purpose Remarks WAIT After the product is turned on until To clear the drum surface of potential Detects whether or not the cartridge is the end of the initial rotation of the main and to clean the primary charging roller. installed. motor. STBY (Standby) From the end of the WAIT period or the LSTR period until the pickup command is sent from the formatter. Or, from the end of the LSTR period until the product is turned off. To pause until the product is ready to print. INTR (Initial Rotation Period) After the pickup command has been sent from the formatter until the media reaches the topof-page sensor (PS801). To stabilize the photosensitive drum sensitivity in preparation for printing. Also to clean the primary charging roller. PRINT (Print) From the end of the initial rotation until the primary voltage goes OFF. To form images on the photosensitive drum based on the VIDEO signals (/ VDO, VDO) sent from the formatter and to transfer the toner image onto the media. LSTR (Last Rotation Period) After the primary voltage goes OFF until the main motor stops rotating. To deliver the last page. Also to clean the primary charging roller. When the pickup command is sent from the video controller, the product enters the INTR period immediately after the end of the LSTR period. 40 Chapter 5 Operational theory ENWW