Administering MAX Hardware
Interpreting indicator lights
MAX Administration Guide
1-7
Troubleshooting the Fault indicator light
If the MAX 3000 or MAX 6000 unit’s Fault indicator light is off, the unit passed its power-on
self tests and you cannot communicate with the VT100 interface, press Ctrl-L to refresh the
screen. If you still do not see any data, check the cabling between the MAX unit and your
terminal as follows:
1
Check the pin-out carefully on the 9-pin cable.
The control terminal plugs into the HHT-VT100 cable or the 9-pin connector labeled
Control on the back of the unit. If you are connecting to an IBM PC-like 9-pin serial
connector, a straight-through cable is appropriate. Otherwise, you might need a 9-to-25
pin conversion cable.
2
Check the flow control settings on your VT100 terminal.
If you are not communicating at all with the MAX unit, determine if you can establish
communication after you have turned off all transmit and receive flow control at your
terminal or terminal emulator.
3
Determine whether you need a null-modem cable converter.
Though generally not needed, occasionally a null-modem cable converter is required for a
few of the large numbers of different cable and terminal configurations that are available.
The Fault indicator light should remain off except during the power-on self tests. If you are
using the VT100 interface, press Ctrl-L to refresh the screen.
If the Fault indicator light remains on longer than a minute, there is a MAX hardware failure. A
blinking Fault indicator light also indicates a hardware failure.
Should these situations persist, contact Lucent Technologies technical support.
MAX 800
The MAX 800 unit’s front panel indicator lights convey information about the power supply,
WAN activity, and installed PCMCIA cards. Table 1-6 describes the indictor lights on the front
panel of a MAX 800 unit.
100BT
On (green) when 100 Mbps operation is selected for the UTP
port.
RX
On (green) when receiver is active.
COL
On (amber) when a collision occurs.
Table 1-5. MAX 3000 back-panel indicator lights (continued)
Light
Description
Table 1-6. MAX 800 front panel lights
Light
Description
Power light
The green Power light indicates when the unit has been turned on
and is receiving power.