Try a known good power cord and wall outlet and see if the printer would power on.If there were any power outages before the printer stopped working, most likely it got damaged by an electrical surge. If the printer powers on after replacing the power cable, check the operator panel display for any error message. Check page 89 of the printer manual for an explanation. The manual can downloaded from the link below:
http://support.dell.com/support/edocs/Systems/PRN964/en/om/om_en.pdf
Replacing Ink Cartridges
CAUTION: Before performing any of the procedures listed in this section, read and
follow the safety information in "CAUTION: SAFETY INSTRUCTIONS" on page 9.
Dell ink cartridges are only available through Dell. You can order more ink online at
www.dell.com/supplies or by phone. To order by phone, see "Ordering Supplies" on page 2.
Dell recommends Dell ink cartridges for your printer. Dell does not provide warranty coverage
for problems caused by using accessories, parts, or components not supplied by Dell.
1 Turn on your printer.
2 Lift the printer unit, and position the scanner support between the tabs to hold it open.
The ink cartridge carrier moves and stops at the loading position unless the printer is busy.
3 Press down on the ink cartridge lever to raise each ink cartridge lid.
4 Remove the old ink cartridges.
5 Store the cartridges in an air-tight container, such as the storage unit you received with
your photo cartridge, or dispose of them properly.
6 If you are installing new ink cartridges, remove the sticker and transparent tape from the
back and bottom of each ink cartridge.
7 Insert the new ink cartridges. Make sure the black or photo ink cartridge is secure in the
left ink cartridge carrier, and the color ink cartridge is secure in the right ink cartridge
carrier.
8 Snap each lid closed.
9 Lift the printer unit, and hold the scanner support up while lowering the printer unit until
it is completely closed.
See page 71, section 7 in the user guide:
http://support.dell.com/support/edocs/systems/944/en/om/om_en.pdf
Click on this link or copy and paste the complete link into your browser.
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