Toner Cartridges, Maintenance Kits and Parts

5 Items
Black Genuine Toner Cartridge Standard Yield, 4,500 pages
Cyan Genuine Toner Cartridge Standard Yield, 5,900 pages
Magenta Genuine Toner Cartridge Standard Yield, 5,900 pages
Yellow Genuine Toner Cartridge Standard Yield, 5,900 pages
Genuine Drum Unit Standard Yield, 12,500 pages
The Phaser 780GN uses XER 016-1681-00 (XER 016168100), XER 016-1680-00 (XER 016168000), XER 016-1679-00 (XER 016167900), XER 016-1678-00 (XER 016167800) toner cartridges. XER 016-1681-00 yields 5900 pages; XER 016-1680-00 yields 5900 pages; XER 016-1679-00 yields 5900 pages; XER 016-1678-00 yields 4500 pages.
The XER 016-1678-00 cartridge has an approximate yield of 4500 pages.
Approximate color cartridge yields: XER 016-1681-00 (XER 016168100, ~5900 pages), XER 016-1680-00 (XER 016168000, ~5900 pages), XER 016-1679-00 (XER 016167900, ~5900 pages).
Yes — the Phaser 780GN uses a replaceable imaging drum: XER 016-1864-00 (XER 016186400).
When the Phaser 780GN reports "Supply Problem", it usually just can't communicate with one cartridge's chip. Give the printer a full power-cycle, take out and firmly reinsert the flagged cartridge, and lightly buff its metal contacts with a dry, lint-free cloth. If the message stays, install a new cartridge in the reported colour.