Time (sec) Printer state Visual and acoustic information
27 Mechanical initialization
1. Basic check of servos Sound of the printer's motors
2. Scan Axis, Paper Axis check Carriage movement
3. Paper and print system initialization Paper movement
45 Ready state
NOTE: Initialization lasts around 45 s if there was a clean power-off (using the front panel Power
button). If there was a dirty power-off, the printer will require more time to inititialize (to ensure that the
printhead is in a good state).
Subsystems
Covers
Functionality
These parts cover the printing mechanism and act as protection from potential knocks or dust. They also
prevent the customer from coming into contact with unsafe parts during the operation of the printer.
Finally, the covers complement the style and aesthetics of the printer.
The T120 and T520 printers have covers of different colors, and a different configuration of the roll
cover, as seen in the following table:
HP Designjet T120 HP Designjet T520
Roll Cover Not Present Transparent
Top Cover Opaque Black Transparent
Output Platen Black-Blackberry Black-Olive
Output Tray Black-Olive Black-Olive
ENWW
Subsystems
5
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