HP Designjet 8000 HP Designjet 8000s Printer Series - User's Guide - Page 27

How do I... (basic operation topics)? WARNING! The printer has an internal clock which allows it to automatically wash the printheads, flushing some ink through the printheads, which keeps the printheads in good condition. The printer automatically washes the printheads regularly after the last printing process. If the printer is switched Off for a long period, this process does not happen. If the ink does not flow through the printheads from time to time, the ink will dry inside the nozzles, reaching a point where it is impossible to recover them and the printheads will fail. This will mean an expensive printhead replacement. Automatic maintenance and cleaning will not be performed if you turn off the printer on the front panel or leave it without media loaded. The printer power switch on the rear of the printer should only be used when the printer is turned off to move it, to connect it to a computer, or to install or maintain printer parts. WARNING! Turn the printer OFF and unplug the power cable from the power outlet in any of the following cases; - when placing your hands inside the printer; - if there is smoke or an unusual smell coming from the printer; - if the printer is making an unusual noise not heard during normal operation; - a piece of metal or a liquid (not part of cleaning and maintenance routines) touches internal parts of the printer; - during an electrical (thunder/lightning) storm; - during a power failure. CAUTION Always hold the power cable by the plug when connecting and disconnecting from the power outlet. Never pull on the cable because this may damage it and create risk of fire and electric shock. ▲ Turn off the power by pressing the power on/off key on the front panel for a couple of seconds. The front panel displays the message above to indicate that a shutdown process is in progress. After the process ends, the power is turned off. If you intend to turn the printer off for a short time, you can avoid the printhead wash operation by pressing the power on/off key while pressing the CANCEL key. The printhead wash operation is recommended to keep the printheads in good condition. CAUTION The printer power switch on the rear of the printer should only be used when the printer is turned off to move it, connect it to a computer, or to install or maintain printer parts. The printer automatically washes the printheads regularly after the last printing process. We recommend that the printer power is left on and media is loaded. ENWW Turn the power on/off 17