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Appendix C • Installing the DW4020 Manually
1031484-0001 Revision 2
87
• Check if the LEDs on the back of the Gateway or on or off.
The LAN ports on the back of the Gateway have LEDs. See
Ethernet port LEDs on page 94.
• Contact Customer Care. If the corrective actions described in
this chapter and Chapter 3 – The User Interface do not solve
the problem, contact technical support.
The DW4020 LEDs The receive modem has a RX and a READY LED. The transmit
modem has a TX and a READY LED. The Gateway has a
STATUS and READY LED.
Note: Whenever the LEDs do not function properly as described
below, check to be sure you have the correct power supply, PN
1031105-0001.
DW4020 LEDs status This section describes the LEDs’ appearance during typical
DW4020 operation. It also describes their appearance when some
basic problem is occurring.
Normal operation, no
transmit or receive
When the DW4020 is powered on but not receiving or
transmitting data, it appears as shown in Figure 63. The modems’
READY LEDs are continuously lit. Both the Gateway LEDs are
continuously lit.
Figure 63: DW4020 normal operation, no data received or transmitted
Modems’ READY
LEDs continuously lit
Both Gateway LEDs
continuously lit