HP Color LaserJet 8500 Service Manual - Page 165

cartridge stop position flag); the yellow, magenta, and cyan cartridge stop position flags (three flags); and the fetch (removal or replacement) flags (four flags). When the controller board receives the print signal from the formatter, the carousel motor (M1) is turned on at normal speed. When the controller board detects that the carousel rotation has reached the slow down position, the controller board reduces the carousel speed until the controller board senses that the carousel rotation has reached the stop position. Figure 43 shows an example of the carousel in the yellow cartridge stop position where the printer is ready for yellow development. The yellow toner cartridge is facing the imaging drum. Figure 43. Carousel control Carousel stop solenoid The carousel lock control fixes the carousel by pushing the stopper lever against the carousel when the cartridge is moved to the fetch position. When a user presses the carousel rotation button while replacing the color toner cartridge, the carousel begins to rotate, then stops in the color toner cartridge fetch position. The carousel is fixed when the carousel stopper solenoid (SL5) pushes the stopper lever. EN Consumable detection mechanisms 163