Indicator Lights for the WBM750A/B Models
The Wideband Cable Modem has five indicator lights to assist in troubleshooting.
Patterns: Normal Operation
The following table shows light patterns during normal operation.
Patterns: Startup Sequence
The following table shows the light patterns during each phase of the startup se-
quence.
Power
DS
US
Online Link
Description
Off
Off
Off
Off
Off
No power to Wideband Cable Modem
Flash
Flash
Flash
Flash
Flash
Power-on Self Test
On
Flash
Off
Off
Off
Downstream search
On
On
Flash
Off
Off
Downstream found; upstream search
On
On
On
Flash
Off
Downstream and Upstream found;
retrieving setup information from cable
operator
Mode
Power
DS
US
Online
Link
AC Power
On
On = Connected
to the Internet
Flash
= Not
connected to the
Internet
On = Connected
to the Internet
Flash
= Not
connected to the
Internet
On = Internet
Available
Off = Internet
not available
On = Computer
Connected
Off = Computer
not connected
Flash
= Computer
Activity
No AC Power
Off
Off
Off
Off
Off
Firmware
Upgrade
On
Flash
Flash
On
(normal operation)
Touchstone TM602 Telephony Modem User’s Guide
Safety
Getting
Started
Installation
USB
Drivers
Ethernet
Configuration
Usage
Troubleshooting
Glossary
45
A
B
C
D
E
