4-52 
Improvement of print quality
(12) After replacing the wiper cleaner, is such failure cleared? 
(1)  With reference to "6-1-19. Replacing the wiper cleaner", replace the wiper cleaner with a new one. 
(2)  Print out a nozzle check pattern to check the result. 
ï‚·  If non-ink ejection nozzle is not found -> OK 
 
ï‚·  If the state of non-ink ejection nozzle is not changed -> NG 
=> With reference to "5-1-4. Cleaning of head nozzle", clean the nozzles. 
=> Print out the nozzle check pattern once again, and if the print quality is not regained, clean the head 
with reference to "7-2-2. Head cleaning". 
=> Print out the nozzle check pattern once again, and if the print quality is not regained, clean the head 
with reference to "6-1-31. Replacement of print head".