Oki IP-6620 Maintenance Manual page 162

<Missing dots are found at the beginning of printing.>
Cause
Outside the Use the printer within the operating temperature/humidity range.
operating
temperature/
humidity range.
Obstructions in the Check the platen, the media edge guards, the capping unit, the wiper
nozzle surface. blade, the pressure roller, and the head guards, and remove any
foreign matter.
Lint or paper fibers coming from a damaged media may touch the
print heads, which may cause missing dots. Replace the media with
a media with no lint or paper fibers.
The media entered Perform normal cleaning.
into contact with the If the problem persists, perform the action.
nozzle surfaces.
Cleaning did not Perform the daily maintenance.
finish normally. Clean the caps.
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
User Solution
OKI Data Infotech Corporation CONFIDENTIAL
Service Engineer
Inspection Replacement Part
- Install the last firmware - Firmware version
version. - PRINT HAED
- Check that the nozzles - CAP, MW
eject ink correctly. - WIPING UNIT,MW
- Check the cap position.
- Check that ink is sucked
when performing the FILL
CAP or PH.RECOVERY
operation.
- Check the wiping unit
operation.
- Check the wiping position.
- Fill the system with ink
again.
Reference
Assumed to Check/
Replace
Parts
5-3