Hughes DIRECWAY DW4020 Manual Do Utilizador

The receive and transmit modems have LEDs on their front 
panels. Both modems have a green R

 LED. The receive 

modem has a green RX LED. The transmit modem has a green 
TX LED. The LEDs’ status indicate various conditions. Table 13 
describes the basic states.

The LEDs may also indicate various conditions through blink 
patterns. Tables 7 and 8 explain these. The numbers in brackets 
are the status codes discussed in The System Status indicator on 
page 36. 

If the modem does not appear to be functioning, check all cable 
connections. If they are secure, cycle the power by unplugging 
the power cord at the power supply and plugging it back in. A 
number of conditions and corrective actions are described below.

The R

 LEDs should come on steadily when the DW4020 is 

powered up and when it is operating. The TX and RX lights can 
also blink when the DW4020 is first powered up, or when the 
DW4020 is power cycled. However, that blinking does not 
indicate anything about their status.

The DW4020 is extremely reliable. If you find you cannot surf 
the Internet or the DW4020 seems to have a problem, follow this 
sequence of steps below to identify and fix the problem.

• Check whether the DW4020 LEDs or on or off. The LEDs 

may indicate that a connection has become loose. 
Reconnecting a cable or power cord may restore function. 
See DW4020 LEDs status.

• Check if the LEDs are blinking in a pattern. The LEDs can 

blink in a pattern. The patterns correspond to the receive and 
transmit status codes discussed in Transmit Status messages 
on page 37 and Receive Status messages on page 42. See 
LED blinking indicating status codes on page 60 for a 
discussion of the blinking LEDs.

Table 13: Basic Receive and Transmit Modem LED States

Receive modem

Modem not functioning

Modem functioning, no 
data being received

Modem functioning, 
data being received

Transmit modem

Modem not functioning

Modem functioning, no 
data being transmitted

Modem functioning, 
data being transmitted