User's Manual

724-746-5500 | blackbox.com
Page 12
EME149A-20
Chapter 2: Overview
2.3.5 EME149D-20 Front Panel
1
2
5
7
8
3
4
6
Figure 2-5. Front panel.
Table 2-5. Front-panel components.
Number Component Description
1 Power LED When the unit is powered on, the power LED will be lit continuously. If the
power LED is flashing, there is a problem with the CPU. Contact Technical
Support at 724-746-5500 or [e-mail].
2 Link LED The Link LED indicates network connectivity. It lights when a network is
connected to the ServSensor V4E Lite.
3 Mic The mic is a small hole for access to the internal microphone. Use it as a
sound sensor (or use an external mic).
4 SD memory card slot Place your SD card in the removable SD memory card slot. It can store sounds
recorded from the internal microphone and also the current firmware of the
unit.
5 Activity LED The Activity LED flashes when network traffic is sent to or received by the
ServSensor V4E Lite.
6 Status/Online LEDs 1–8 The Status/Online LEDs are numbered 1–8. They indicate the connectivity
status of the sensors connected to each port. You can also use these LEDs to
indicate system status during various operations.
Additionally, the LEDs can indicate the progress of an upgrade. The red LEDs
move from left to right to indicate activity, and all the green LEDs indicate
overall progress of the upgrade. When all the red lights are off and the green
are on, the upgrade/recovery process is complete.
These lights also indicate if the unit is operating in safe mode. This is when
the unit loads the operating system (OS) with a minimal set of drivers. If your
device enters safe mode after rebooting, contact Black Box Technical Support
at 724-746-5500 or [e-mail].
The unit may enter recovery mode if a firmware upgrade is incomplete. In this
case, the unit displays a continuously lit row of red LEDs. If this happens,
contact Black Box Technical Support at 724-746-5500 or [e-mail].