HP Deskjet 6127 Color Inkjet Printer - Manual (Page 109)

cleaning the print cartridges and print cartridge cradle
1. Lightly moisten a cotton swab with distilled water.
2. Clean the face and edges of the first print cartridge with the swab, as shown in
the following illustration.
Do not wipe the nozzle plate.
1. nozzle plate 2. face and edges of print cartridge
3. Inspect the face and edges of the print cartridge for fibers.
Repeat steps 1 and 2 above if fibers are still present.
4. Repeat steps 1 through 3 for the second print cartridge.
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