Siemens 4200 Series User Manual

Router User’s Guide

Troubleshooting

Interpreting the LED Display

The LED indicators on the front of the router give you a visual clue to the router activity. When the router
is configured and working correctly, all LED indicator lights briefly turn a solid green. The following table
shows the possible states indicated by the LEDs. If the LEDs indicate a problem, refer to “Resolving
Specific Issues” later in this chapter.

LED

pwr

dsl

USB

enet*

Off

No power to
router

No power to router

- DS

L signal not

detected

- No power to
router

- No USB device
connected
- USB driver not
installed or
installed
incorrectly

- No power to
router
- No Ethernet
device connected
- Wrong Ethernet
cable used
(cross- over
instead of
straight-through)

Green

Normal system
operation

Connected and ready for
data traffic

Normal USB
operation, link okay,
no user traffic

Normal Ethernet
operation, link okay,
no user traffic

Blinking
Green

N/A

- Steady blinking:
DSL attempting to
connect
- Sporadic blinking:
DSL connected and
user traffic flowing

USB user traffic
flowing in either
direction

Ethernet user traffic
flowing in either
direction

Blinking
Red/
Green

Flash Write in
progress

N/A N/A

N/A

Red

- POST tests in
progress (first
30 sec. after
powering on or
rebooting)
- POST error
occurred

N/A N/A

N/A