HP Deskjet 5145 Color Inkjet Printer - Manual (Page 66)

printer lights are on or flashing
what the lights indicate
The printer lights indicate the printer status.
1. power light 2. resume light 3. print cartridge status light
power light is flashing
the printer is preparing to print
The light stops flashing when the printer has received all data.
resume light is flashing
the printer may be out of paper
1. Place paper in the In tray.
2. Press the Resume button on the front of the printer.
there may be a paper jam
Follow these instructions to clear a paper jam .
print cartridge status light is on or flashing
if the light is on and not flashing
Check to see if a print cartridge is low on ink.
If a print cartridge is low on ink, consider replacing the print cartridge .