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1-6
MAX Administration Guide
Administering MAX Hardware
Interpreting indicator lights
The MAX 3000 unit’s back-panel indicator lights convey information about the 10 Mbps
operation, 100 Mpbs operation, transmitter activity, Full Duplex Mode, Half Duplex Mode,
receiver activity, and collisions. Figure 1-5 shows the MAX 3000 back-panel indicator lights.
Figure 1-5. MAX 3000 back-panel indicator lights
Table 1-5 describes the indicator lights on the MAX 3000 unit’s back panel.
Alarm
On (amber) at power-up. Thereafter, on indicates a WAN
alarm or a trunk out of service (for example, during line
loopback diagnostics). WAN alarms include Loss of Sync,
Red Alarm, Yellow Alarm, and All Ones (or AIS).
For more information regarding the Alarm indicator light,
see “Troubleshooting a Red Alarm” on page 5-2 and
“Troubleshooting a blinking Alarm” on page 5-4.
Table 1-5. MAX 3000 back-panel indicator lights
Light
Description
LNK
During 10 Mbps operation, indicates Link Valid status. Dur-
ing 100 Mpbs operation, indicates scrambler lock and receipt
of valid Idle codes. The light is green when on.
TX
On (green) when transmitter is active.
DPLX
On (green) when the port is in Full Duplex Mode. When the
light is off, the port is in Half Duplex Mode.
Table 1-4. MAX 3000 front-panel indicator lights (continued)
Light
Description
LAN UTP
LNK
COL
DPLX
100BT
TX
RX
WAN 1