User's Manual
Table Of Contents
8 Series 4000 Maintenance and Operations Manual
USB Port
Communication LEDs.
Two LEDs located to the right of the battery and above the COMP1 connector indicate the
direction of communication through the USB port.
• The left LED (LED 1) indicates when data is sent from the tablet or laptop through the USB
port to the Series 4000 MTU.
• The right LED (LED2) indicates when data is sent from the MTU out through the USB port
to the tablet or laptop.
DRAFT