Paxar 9840CL - Manual (Page 35)

Paxar Systems Group Paxar 9840CL Printer Care and Maintenance - 4
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5. Moisten another cotton swab with isopropyl alcohol. Rub the cotton swab across the
printhead and remove any build-up.
6. Rub the cotton swab across the supply sensor and remove any build-up.
7. Clean the build-up in the supply path.
8. Let the printer dry and reload your supplies.