HP Designjet 5000 Service Manual - Page 378

Functional Overview Introduction This Chapter contains a simplified description of the HP DesignJet 5000/5000PS Printer. In total there are 4 Models with the following Part Numbers: Model Size Part No. HP DesignJet 5000 42" 60" C6090A C6095A HP DesignJet 5000PS 42" 60" C6091A C6096A Electrical System The electrical system of the Printer consists of six major blocks and their associated cabling: n Power Supply Unit: Connected to the mains supply of whichever country this block provides 24V, 5V, 3.3V and -15V to the rest of the electrical system. It has a soft power switching feature allowing the firmware to control when power is removed from the system, and eliminates the need for high tension cables to the front panel. n Main Electronics: This block contains the I/O, central processing units and controls most of the motors and sensors in the printer. The motors and sensors themselves are located throughout the printer and are connected to the main electronics via cables. n Carriage: Connected to the Printheads, this block supplies power to them, as well as monitoring and protecting them from damage. It also has the ability to control warming and to perform continuity checking, as well as controlling the Line Sensor. The Carriage Encoder is also located in this block. n Ink Supply Station: The Ink Supply Station is connected to the Ink Cartridge supplies, and controls air pressure (pump, sensor and valve), as well as monitoring ink levels and the supply latch sensor. n Service Station: Contains the electronics needed to perform drop detection, a DC motor/encoder for capping, wiping and spitting and a stepper motor for priming. n Front Panel: is the user interface. It consists of an LCD display, a key panel and four LEDs. 10-2 HP DesignJet 5000 Series Printers Service Manual