I have a motorola AP-300 which keeps on blinking amber light

You are going to get a range of opinions on this one. Some suggest a new power supply and others more invasivel repairs involving removal of the front panel and soldering!

http://www.tomshardware.com/answers/id-2277673/dell-wont-boot-amber-blinking-light.html

A red light indicates the charger is charging the battery, an amber light means it has switched from fast rate charging to trickle to keep the battery topped off, and green would mean the battery is completely charged. But don't be fooled waiting for green, many times the charger will only be on green for a moment before changing to amber and keeping the battery topped off.

Flashing can be a sign of a problem on some chargers.

A rapid flashing red can on some chargers indicate a bad or shorted battery, or a bad battery contact in the charger itself. If in question, try a different battery on the charger or compare with another charger to determine if the blinking is normal.

Best regards.

What controller are you using? You are correct - it is an IOS error. Usually the AP is not compatible with the WLC ios.

The SB6121 link light uses color to indicate the connection speed. Blinking means data transfer is taking place. Blue means that it's a 1000Base-T (High-speed Gigabit Ethernet). Amber means it's an older ethernet device. 100Base-T or 10Base-T Ethernet connection.

You got to check a few things prior to perform any troubleshooting step.
1)whenever you face a disconnection check both end FO converters and try to figure out which one lights are blinking and which are not blinking in both ends at the same time.
2) are both the converter is similar make or not? If not please specify both makes.
3)How many devices are connected on both end after the AP's(approx)? Is there any switch or hub also present within the same network?
4)whenever you face a hang/disconnection position disconnect and reconnect power from one of the FO converters and see what happens then disconnect and reconnect power in the other end and see what you get.
Please revert back with the above detail and I feel I will be able to help you out.Rather you will be able to find out where the issue lies by applying the above steps.
All the best.

British only say dodgy. so bingo for UK?
reckon is only said by us confederates, rebels.lol well the Arris (SB5101U) moldem is first , its LED happy./

SOUNDS LIKE IT IS BAD DO ME, IF MODEM WORKS
AND ROUTER FAILS THEN ROUTERS IS BAD.
But any router made can be not configured at all.
as in hard reset and fails. so reDO alo that. in the Airport router
AirPort extreme
Apple AirPort Extreme 802.11ac User Manual lets read some pages router
wan jack wired to wan jack on modem, check
the AP status LED light
off means no power.
sold amber means AP is process of starting up;.


SOLD GREEN LED: is good
Flashing Amber (orange/) means.
Your AirPort Extreme can't establish a connection to the network or the Internet,
or is encountering a problem. Use AirPort Utility to get information about what
might cause the status light to flash amber. See "If Your AirPort Extreme Status
Light Flashes Amber" on page 18.

the error above amber blink means the AP can not connect to the ARRIS MODEM. so reset it first. reset it by only unpluging AC power from wall for 5min and put back and wait 15min or until modem shows fully connected, to ISP./
the router is last not first. ISP not down today.
if the modem keeps failing call the ISP..
one can wire connect a PC directly tot the modem and test that way
but I will show a page on that now.

https://red-dot-geek.com/connect-pc-modem-ethernet-cable/


now you learned how to test the modem first and then router.
wired
once wired works both modem and router
we play WIFI H3LL all day long, ask. can do but endless causes to fail, in truth.

From the installation guide for this AP, I find the following:

LED Indicators

The unit has LED activity indicators on the front of the case provide a status display indicating error conditions, transmission, and network activity for the 802.11a (amber) radio or the 802.11b/g (green) radio.

802.11a Activity LED Amber

The amber LED flashes three times per second until firmware is loaded. During boot, 802.11a mobiles cannot associate. After adoption, the amber LED is steady or flashes with 802.11a radio traffic.

The amber LED flashes once per second if an error prevents the 802.11a radio from operating normally.

802.11b/g Activity LED Green

The green LED flashes three times per second until firmware is loaded. During boot, 802.11b/g mobiles cannot associate. After adoption, the green LED is steady or flashes with 802.11b/g radio traffic.

The green LED flashes once per second if an error prevents the 802.11b/g radio from operating normally.

From this, it appears that the 802.11A radio is malfunctioning.

Here is the Motorola support web page for this device.

Check the HP site for the "blink" codes.

make sure that all the cables are connected FULLY.
blinking light means that there is no signal.

The monitor requires service The monitor is not receiving a signal from the computer