The 
(Alarm) LED indicates a printer error status.
LED Printer status
On
●
Blinking
❍↔︎●
Paper empty, paper jam or mis-feeding. If a paper jam occurs, refer to ‘Paper Jams’ in Chapter 5.
There is no ink cartridge installed or the ink cartridge(s) is not installed correctly when an ink LED(s) is also on.
The top cover of the printer is open and should be closed so that the printer can print.
When the
(Alarm) LED is on or blinking and the printer has detected an error condition, refer to the ‘Alarm Indications at a Glance’ section in Chapter 5 and clear the problem to make the printer ready to print.