HP Designjet T120 and T520 ePrinter Series - Certificate of Volatility

This statement provides a generic view of memory devices volatility of the stated Designjet printers. It should not be use as a supporting document directly or indirectly for any
claims against Hewlett-Packard. HP assumes no obligation to any legal issues arise from the use of this document directly or indirectly. This letter is privileged, confidential and
contains private information. Any reading, retention, distribution or copying of this communication by any person other than its intended recipient is prohibited
HP Designjet T520/T120 Printer Certificate
of Volatility
Introduction
The following is a statement regarding the volatility of customer data stored in memory devices and hard disk
drives of the HP Designjet T520/T120 ePrinter.
The printer uses volatile memory to store customer data during the printing process. When the printer is turned
off, this volatile memory is erased. The printer uses non-volatile memory to store device configuration
information. This non-volatile information is used to initialize the volatile memory when the printer is turned on
and at the beginning of a print job. The printer also contains a hard disk drive that retains data after the printer
is powered off.
Volatile memory
‐ Main SDRAM (DDR3): 1 GB in T520 and 256 MB in T120. Used as system memory. All info is erased when
printer is powered off.
‐ Main IC cache: embedded RAM in the Main integrated circuit used for its internal process and operation.
Non volatile memory
‐ NVM-Main: 16 KBytes Serial CMOS EEPROM with BIOS parameters.
‐ NVM-Backup: 32Kbytes. Contains a copy of the NVM-Main and is accessed in case this Main PCA is
changed (Serviced).
‐ SPI Flash IC: 1 GB for boot loader storage
‐ NVM in the Printhead assembly: some KB for PHA information storage
‐ NVM in the supplies (x4): some KB for supplies information storage
USB Thumb drive
2 GBytes unit for:
‐ Firmware storage (non-volatile part, this information remains always inside the Thumb drive and is not
accessible by user)
‐ Print jobs manipulation and process (used when printing plots with special needs and high
computational capacity)