6-4
Cisco 1800 Series Integrated Services Routers (Fixed) Hardware Installation Guide
OL-6425-03
Chapter 6 Troubleshooting
Reading System LEDs
Reading System LEDs
Check the system LEDs on the front panel of the router for information about the power, data packet
activity, and CompactFlash activity. See
Table 6-1
.
Reading Port and Connection LEDs
Check the port and connection LEDs to determine router performance and operation. See
Table 6-2
.
Table 6-1
System LEDs on Cisco 1800 Series Fixed-Configuration Routers
LED
Indicator
State
Meaning
Possible Causes and Corrective Actions
SYS OK
Off
If the fan is not running—
•
No output from the internal
power supply.
Power is not switched on at the router.
Power is not available from source.
Faulty input power wires or connections.
Failed power supply in the router.
If the fan is running—
•
Router fault
Failure in one or more system board components. Contact
Cisco technical support. See the
“Obtaining Documentation
and Submitting a Service Request”
section of the
Preface
.
Solid green
Router is receiving power, and
the internal power supply is
functional.
Normal indication. No action is required.
Blinking green
During bootup, router is
booting up normally.
Normal indication. No action is required.
After bootup, router is
operating in ROM monitor
mode.
See the router rebooting and ROM monitor information in
the
Cisco IOS Configuration Fundamentals Configuration
Guide
for your Cisco IOS software release.
POE
1
1.
Inline power is a field-upgradable option on Cisco 1800 series fixed-configuration routers, and is not installed by default.
Off
Inline power is not installed.
No action is required.
Solid green
Inline power is functional.
Normal indication. No action is required for inline power
supply.
Solid amber
Inline power output has failed.
Replace inline power supply. See the
“Installing the
Optional Inline Power Supply” section on page 7-5
.
CF
Off
The CompactFlash memory is
not being accessed.
Normal indication. No action is required. The
CompactFlash memory card can be removed if the CF LED
remains off.
Solid green or
blinking
The CompactFlash memory is
being accessed.
Normal indication. No action is required.
Caution: Do not remove the CompactFlash memory card
while it is being accessed.