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[QUOTE="HP_Xerox_guy, post: 219502, member: 18045"]
Your HL-L3270CDW displays the infamous "No Toner" error after years of service [B][I]and[/I][/B] you (sensibly) use aftermarket toner cartridges [B][I]and [/I][/B]you have [U][B]not[/B][/U] updated the printer's firmware to a rev greater than [I]Main [/I]v1.27/Sub1 v1.10... begin your t'shooting by replacing the [B]black (K) [/B]toner cartridge.

[B][I]If that does not clear the lockout...[/I][/B]
Connect the printer to a computer and install the [I]full installation[/I] (Brother driver and "iPrint&Scan" software combo package); open "Brother iPrint&Scan"--the software will immediately display the toner status. Replace any toner carts displaying an "X" in their respective icon.

[B][I]If that does not clear the lockout...[/I][/B]
Check the firmware version. If the firmware rev is greater than [I]Main [/I]v1.27/Sub1 v1.10, you will need to downgrade the firmware to rev [I]Main [/I]v1.27/Sub1 v1.10, or lower. Files and procedure forthcoming.
[/QUOTE]

Verification