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StarHub >  Support  >  Broadband  >  Quick Tips  >  Online Troubleshooting  >  SB3100 Front Panel

Online Troubleshooting

SB3100 Front Panel

Panel LED Descriptions

LED
 Description
Power
 Flashing green indicates performing startup diagnostics. Solid indicates power on and completed diagnostics successfully
Receive
 Flashing green indicates scanning for the downstream frequency. Solid green indicates the downstream channel is acquired.
Send
 Flashing green indicates scanning for the upstream channel. Solid green indicates the upstream channel is acquired.
Online
 Flashing green indicates requesting an IP address (DHCP). Solid green indicates successful completion of DHCP and activities noted above for Power, Receive and Send.
Activity
 Flashing amber when data is transmitted on the downstream or upstream connection. When the LED is off, it indicates no data transfer.

Panel LED Diagnostics

LED
 Statue Possible Problems Suggested Actions
Power
 Off
  • Power cord not
    properly seated.
  • Power outlet not
    operating.
  • Cable modem
    faulty.
  • Check the power cord connection
  • Check the power outlet (use test pen or plug to another power point)
  • Replace the cable modem
Power
 Blinking
  • Failed start-up test
  • Reset modem, if system persists. Replace cable modem
Receive
 Blinking
  • Connection
  • Check RG-6 connection from TV point to Cable modem (e.g loose
    connection)
  • Bypass splitter if any.
  • Replace another RG-6 cable
Send
 Blinking
  • Connection
  • Check RG-6 connection from TV point to Cable modem (e.g loose
    connection)
  • Bypass splitter if any.
  • Replace another RG-6 cable
Online
 Blinking
  • Registration
    unsuccessful
  • Call StarHub Customer Care :1633.
Activity
 No Blinking
  • Cause by Power,
    Receive, Send or
  • Online.
    Faulty Ethernet
    Connection or UTP
    Cable
  • Faulty Ethernet
    Card
  • Refer to the above suggested actions.
  • LINK indicator at the rear panel lit? If no, refer to the suggested action
    under LINK in Rear Panel LED Diagnostic.

Rear Panel LED Diagnostics

LED
 Status Possible Problems Suggested Actions
LINK/ ACT
(Located at the rear panel of the GI cable modem)
 Off


  • PC not powered on
  • Faulty Ethernet
    Connection or UTP Cable
  • Faulty Ethernet Card
  • Faulty Modem
  • Check PC is switched on and the TCP/IP software is
    loaded.
  • Reconnect the UTP cable, if cannot change UTP cable
  • Check and reseat the Ethernet Adapter card, if
    problem persist try replacing the card
  • Replace the modem

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