C I S C O C O N F I D E N T I A L - D r a f t A 1
4-6
Cisco Aironet 1250 Series Access Point Hardware Installation Guide
OL-8247-02
Chapter 4 Troubleshooting 1250 Series Lightweight Access Points
Checking the Power Injector LEDs
Checking the Power Injector LEDs
The power injector (model:AIR-PWRINJ4) has three LEDs on the top end of the case (see
).
Figure 4-2
Power Injector LEDs
lists the power injector LED indications.
Low Power Condition for Lightweight Access Points
The access point can be powered from the 1250 DC power module or from the 1250 in-line power
injector. The access point supports the Cisco Intelligent Power Management.
For full operation, the access point (powered device)
requires xx W (up to yy W with
100 m
CAT 5E (or higher) Ethernet cable. When the access point is being used in a PoE configuration, the
power drawn from the power sourcing equipment (PSE), such as a power injector, is higher by an amount
dependent on the length of the interconnecting cable.
Note
Current switches, power patch pannels, and IEEE 802.3af compliant power sources are not able to
provide sufficient power to the access point.
Note
If your access point is connected to in-line power, do not connect the power module to the access point.
Using two power sources on the access point might cause the access point to shut down to protect internal
components and might cause the switch to shut down the port to which the access point is connected. If
your access point shuts down, you must remove all power and reconnect only a single power source.
AP POWER
FAULT
AC POWER
170366
Table 4-2
Power Injector LED Indications
LED
Color
Description
AP Power
Green
Indicates DC power is available to the access point.
Fault
Red
Indicates a short or overload condition. Check Ethernet cables and
connections before contacting your support organization for assistance.
AC Power
Green
Indicates AC power is available at the power injector.
