HP LaserJet Pro P1606 HP LaserJet Professional P1560 and P1600 Series Printer - Page 22
Formatter-control system, Sleep mode, Input/output, CPU, Memory - wireless
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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. Sleep mode NOTE: This product uses an Auto-Off feature for sleep mode. After a user-specified time, the Auto-Off feature automatically conserves electricity by substantially reducing power consumption when the product is not printing. After a user-specified time, the product automatically reduces its power consumption (Auto-Off). The product returns to the ready state when a button is pressed, a print job is received, or a door is opened. When the product is in Auto-Off mode, all of the control-panel LEDs and the power button backlight LED are off. NOTE: Although the product lights are off in Auto-Off mode, the product functions normally when it receives a print job. Input/output The product receives print data primarily from the following: ● Hi-Speed USB 2.0 port ● 802.11b/g wireless networking (wireless models only) CPU The formatter incorporates a 400 MHz Helium processor. Memory The random access memory (RAM) on the formatter PCA contains the page, I/O buffers, and the font storage area. RAM stores printing and font information received from the host system, and can also serve to temporarily store a full page of print-image data before the data is sent to the print engine. 4 Chapter 1 Theory of operation ENWW