Sierra Wireless U598 Manual page 29

LED State of LED
Blue, blinking
Amber, blinking
Amber, not
blinking
Off
Amber, blinking
Amber, not
blinking
Indicates
The USB modem's firmware is being updated. Do not remove the USB
modem.
The USB modem is searching for service. If this state persists, try the
following:
Reorient your computer.
If you are inside a building or near a structure that may be
blocking the signal, change the position or location of your
computer.
Check with ****** — a network or account problem may be
preventing the USB modem from obtaining service.
An error has occurred. Remove the USB modem and reinsert it.
No service is available. If this state persists, try the following:
Try reorienting your computer.
If you are inside a building or near a structure that may be
blocking the signal, change the position or location of your
computer.
Check with ****** — a network or account problem may be
preventing the USB modem from obtaining service.
1xRTT coverage is detected. Ready to connect to the network; see the user
guide.
The USB modem is connected to a 1xRTT network and can send or
receive data.
Section 3A. Technical Specifications 23