Oki IP-6620 Maintenance Manual page 165

<Black stripes appear on the print.>
[Symptom A]
Cause
The print heads (1) Check for obstructions such as media lint or ink clot in the nozzle
periphery is scanning path including the platen surface, and remove them.
smeared. (2) If the media is curled or wrinkled, solve the problem by referring
to the description on the problem, The media is curled or
wrinkled.
(3) Perform the daily maintenance.
* Do not forget to clean the head guard and media edge guards.
* Be sure to perform the print head cleaning.
(4) Clean the print heads surfaces with print sheet mount cleaning.
[Symptom B]
Cause
During bidirectional (1) Change the print mode to be slower. *1 *2 *3
printing, the order of (2) Print in unidirectional mode. *2
ejected ink colors in (3) Use proven media.
the rightward
direction differs form
that in the leftward
dircetion.
*1 Adjust the media advance adjustment value again.
*2 Note that the print speed differs depending on the mode selected.
*3 Be sure to adjust the bidirectional adjustment value again after changing the carriage speed.
5-6
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. - PCB-ASSY-IPB5-100
- Check the connection of - HEAD CABLE,MW
HEAD CABLE,MW - INKJET HEAD,MW
connectors on the - ROBOT CABLE,MW
HCB1M and the print - CARRIAGE FFC,MW
heads. - PCB-ASSY-HCB1M
- Check the connection of - ROBOT CABLE,MW
CARRIAGE FFC,MW
connectors on the
HCB1M and the IPB5.
- Check the connection of
ROBOT CABLE,MW
connectors.
Service Engineer
Inspection Replacement Part
- Install the last firmware - Firmware version
version. - PCB-ASSY-IPB5-100
- Check the connection of - HEAD CABLE,MW
HEAD CABLE,MW - INKJET HEAD,MW
connectors on the - ROBOT CABLE,MW
HCB1M and the print - CARRIAGE FFC,MW
heads. - PCB-ASSY-HCB1M
- Check the connection of - ROBOT CABLE,MW
CARRIAGE FFC,MW
connectors on the
HCB1M and the IPB5.
- Check the connection of
ROBOT CABLE,MW
connectors.
Reference
Assumed to Check/
Replace
Parts
Reference
Assumed to Check/
Replace
Parts