Oki IP-6620 Maintenance Manual page 164

[Symptom B]
Cause
Print head nozzles (1) Perform a nozzle print, and set nozzle map for the clogged
are clogged. nozzles.
(2) Check for obstructions such as media lint or ink clot in the nozzle
scanning path including the platen surface, and remove them.
(3) If the media is curled or wrinkled, solve the problem by referring
to the description on the problem, The media is curled or
wrinkled.
(4) Perform the daily maintenance.
* Do not forget to clean the head guard and media edge guards.
* Be sure to perform the print head cleaning.
(5) Clean the print heads surfaces with print sheet mount cleaning.
Printing with a color stripe bar is effective to prevent missing dots.
Print head nozzles (1) Print a nozzle print pattern, and set nozzle map for the inclined
inclination. nozzles.
(2) Printing with a color stripe bar is effective to prevent missing dots.
[Symptom C]
Cause
The ink does not (1) Decrease the temperature of all three heaters by 5°C. *1
match the media. * Before starting the print, ensure that the heater temperatures have
(Media with low dot been decreased to the target temperature.
spread rate) * With some media, the increasing the heater temperatures may be
effective.
(2) Change the print mode to be slower. *1 *2
(3) Use proven media.
(4) Print in high density.
*1 Adjust the media advance adjustment value again.
*2 Note that the print speed differs depending on the mode selected.
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
User Solution
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.
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.
Reference
Assumed to Check/
Replace
Parts
Reference
Assumed to Check/
Replace
Parts
5-5