Ricoh L4160 Operation Manual page 128

If nozzle missing cannot be solved even if you performed white maintenance
When nozzle missing of white ink cannot be improved even if you performed white maintenance, replace the
filter.
1
Replace the white ink filter.
• Referring to P.4-29 "Confirmation Message in LOCAL", replace the white ink filter.
2
Fill up the white ink.
• Referring to P.4-38 "Filling the white ink", fill white ink.
3
Clear the white ink filter used days.
• P.4-41 "Clearing white ink filter used days", reset the white ink filter used days.
4-36