HP Color LaserJet Enterprise CP5525 Service Manual - Page 29

Formatter-control system The formatter is responsible for the following procedures: ● Controlling sleep mode ● Receiving and processing print data from the various product interfaces ● Monitoring control-panel functions and relaying product-status information (through the control panel and the network or bidirectional interface) ● Developing and coordinating data placement and timing with the DC controller PCA ● Storing font information ● Communicating with the host computer through the network or the bidirectional interface The formatter receives a print job from the network or bidirectional interface and separates it into image information and instructions that control the printing process. The DC controller PCA synchronizes the image-formation system with the paper-input and -output systems, and then signals the formatter to send the print-image data. The formatter also provides the electrical interface and mounting locations for an additional DIMM. Sleep mode NOTE: In the Display Settings menu (a sub menu of the Administration menu), this item is termed Sleep Mode. This feature conserves power after the product has been idle for an adjustable period of time. When the product is in Sleep Mode, the control-panel backlight is turned off, but the product retains all settings, downloaded fonts, and macros. The default setting is for Sleep Mode to be enabled, and the product enters Sleep Mode after a 15-minute idle time. The product exits Sleep Mode and enters the warm-up cycle when any of the following events occur: ● A print job, valid data, or a PML or PJL command is received ● A control-panel button is pressed ● A cover is opened ● A paper tray is opened ● The engine-test switch is pressed NOTE: Product error messages override the Sleep message. The product enters Sleep Mode at the appropriate time, but the error message continues to appear. ENWW Formatter-control system 5