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451-0308 MRV Communications, Inc. www.mrv.com 17
Installing the LX-4000 Series
Port Status LEDs
Each of the eight (or 16, or 32, or 48) green LEDs flash when receive, transmit, or status activity is
detected on its corresponding serial port. The port status LEDs are used in several ways. During the
initialization process, the LEDs indicate self-tests are being performed, and if any self-test fails, they
indicate an error code. After a POST test and a system software boot, the lights indicate when a port
is actively being used.
Rear Panel LEDs
This section explains the rear panel LEDs and shows you a rear view of the various LX-4000 models
(see Figures 5 through 11).
Figure 5 - LX Series 4008 Rear Panel
Figure 6 - LX Series 4008 with Modem Rear Panel
100-240VAC
1.0A 50/60Hz
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5678
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ETHERNET
RCV LINK
DIAG
100
RCV
100 Mbps
LE
D
LIN
K
DIAG Port (Port 0)
100-240VAC
1.0A 50/60Hz
10/100 ETH
DIAG/MGMT
100
RCV
100
Mbps
LED
LINK
RCV LINK
TELCO
LINE
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Interface
Modem Port
DIAG Port (Port 0)
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