HP Designjet T790 HP Designjet T790 and T1300 ePrinter: User's Guide - English - Page 135
Update the firmware
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Printer maintenance If you need to leave the printer turned off for a long time, follow the additional steps below. 1. Turn off the power using the Power key on the front panel. 2. Also turn off the power switch at the rear of the printer. 3. Disconnect the printer's power cable. CAUTION: If you turn the printer upside down, ink could escape into the printer and cause serious damage. When the printer is turned back on, it takes about three minutes to initialize itself and to check and prepare the printheads. Preparing the printheads normally takes just over a minute. However, if the printer has been off for a six weeks or more, preparing the printheads could take up to 45 minutes. CAUTION: If the printer remains off for a long period of time, the printheads may become unusable. In this case, you need to replace the printheads with new ones. TIP: Because preparing and purging the printheads uses both time and ink, you are strongly recommended to leave the printer always on or in sleep mode, whenever possible, to maintain the health of the printheads. In both cases, the printer wakes up from time to time to maintain the printheads. Thus you can avoid going through lengthy preparation processes before using your printer. Update the firmware The printer's various functions are controlled by firmware that resides in the printer. From time to time firmware updates will be available from Hewlett-Packard. These updates increase the printer's functionality and enhance its features. There are various ways of downloading and installing firmware updates; you can choose whichever you find most convenient. NOTE: If an administrator password has been set, it will be required to change these settings. NOTE: A firmware update package can be large; you may want to consider whether there are any implications for your network or Internet connection. Downloads made with a Jetdirect adaptor are slower than those made with the built-in Ethernet adaptor. NOTE: A firmware update is downloaded in the background: the printer can be printing at the same time. However, it cannot be installed in the background: printing must stop. ● You can configure the printer to download firmware updates automatically whenever they become available: see Configure firmware updates on page 23. The following options are available if you choose manual firmware updates. ● Using the Embedded Web Server, select the Firmware update maintenance tab and then Firmware update. Press Check now to check whether new firmware is available. If new firmware is available, some information about the new firmware is displayed, and you are given the opportunity to download and install it. ● Using the front panel, press , then , then Firmware update. Press Check now to check whether new firmware is available. If new firmware is available, you are given the opportunity to download and install it. ENWW Update the firmware 127