HP Deskjet 3420 Color Inkjet Printer - Manual (Page 47)

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.
5. Wipe the underside of the print cartridge cradle walls using clean, moistened
cotton swabs.
Repeat this process until no ink residue appears on a clean swab.
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1. print cartridge cradle 2. print cartridge cradle walls
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.
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