Usb Hub; Negative Pressure Backup System - EFI T1000 Operator's Manual

USB Hub

The USB Hub controls functions to many printer systems and controls printer security through
a removable USB dongle.
The USB must have the security dongle plugged in to operate the printer. Remove the dongle to
prevent unauthorized access to the printer.
Note: Never modify the USB configuration; moving USB cables may disable printer
functionality.

Negative Pressure Backup System

The T1000 ships with a 24V adaptor that connects to an auxiliary jack on the printer and
provides dedicated power to the carriage vacuum system.
The T1000 negative pressure system prevents ink from dripping from the print nozzles. Insufficient
negative pressure can result in ink dripping and excessive negative pressure can result in ink
starvation during printing. The pneumatic lines run from the pressure pump, to the Valve Cluster,
and finally to the overflow tank. The overflow tank collects the ink should a pressure imbalance
occur.
Caution: The negative pressure system must be plugged in and powered on to
prevent ink from dripping from the jet packs during power outages or printer
shutdown.
The CMYK and W negative pressure valves are located on top of the Carriage and must be open
when the printer is in use.
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Figure 15: USB Hub with Security Dongle
USB
Security
dongle
EFI, Inc.