Diagnostics

The Cable Modem has five status LEDs for diagnostics. You can monitor the LEDs during installation and during normal operations .

Table 1 shows Cable Modem status LEDs and identifies what each LED light means. This table will help you to diagnose problems.

Function

Color

 

Definition

Power

Green

-

dark for power off

 

 

- solid for power on

Cable

Green

-

dark for no downstream RF carrier present or

 

 

 

power off

 

 

- flashing slowly (*1) for downstream RF carrier

 

 

 

present and initial ranging in progress

 

 

- flashing fast (*2) for registration in progress

 

 

- solid for the Cable Modem registered and ready

 

 

 

to transfer data

PC

Green

-

dark for no carrier to/from PC present or power

 

 

 

off

 

 

- solid for carrier to/from PC present

Data

Green

-

dark for no user data going through the Cable

 

 

 

Modem to/from PC present or power off

 

 

- flashing for user data going through the Cable

 

 

 

Modem to/from PC present

Test

Amber

-

dark for initial self-test of the Cable Modem OK

 

 

 

or power off

 

 

- flashing for initial self-test of the Cable Modem in

 

 

 

progress or software down loading of the Cable

 

 

 

Modem in progress

 

 

- solid for self-test failure of the Cable Modem

 

 

Table 1

Status LEDs

(*1) flashing slowly : flashing every 2-seconds (approximately)

(*2) flashing fast : flashing every 1-second (approximately)

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Toshiba PCX1100U owner manual Diagnostics, Function Color Definition