It stopped printing half through one page of document and then printed blank pages. It showed the ink cartridge as 50 % full. The cartridge was purchased from Dell and the printer was used on a daily basis
Try reading the below articles and see if it helps.
Troubleshooting Print Quality for the Dell V525w and V725w AIO Inkjet Printers
Troubleshooting Setup for the Dell 525w and 725w AIO Inkjet Printers