Brother
DCP-T820DW
- Issue
- Ink tank printer showing "Unable to Clean" error. Black ink not printing at all despite full tank. Head cleaning cycles ineffective.
- Solution
- Disassembled print head assembly. Ultrasonic cleaned clogged nozzles. Replaced ink dampers and purged air from ink lines.
Technician's note
Ink had dried in dampers due to 3 months of non-use. Advised customer to print test page weekly to prevent recurrence.
- Ink Tank
- Brother
- Print Head



