When Normal Cleaning Is Not Effective; Medium Cleaning - TDS EJ-640 Maintenance Manual

Periodic Care and Maintenance
- Medium cleaning/powerful cleaning.
Perform medium cleaning or powerful cleaning when problems such as dot drop-out are
not corrected after performing normal cleaning.
- Manual cleaning
Perform manual cleaning periodically according to your frequency of use.
- Refreshing subtanks (REFRESH SUBTANKS)
Perform this procedure once every six months. (This procedure is effective when light
choke cleaning does not resolve uneven color issues.)
Care and Maintenance When Uneven Color Occurs
-
Light choke cleaning
Perform this cleaning when printed colors are unstable or uneven, e.g. when color density
is inconsistent, even if the same data is printed with the same settings.
- Refresh subtanks (REFRESH SUBTANKS)
Use this procedure when light choke cleaning does not resolve uneven color issues. (Note
that it is necessary to perform this procedure once every six months regardless of whether
or not there are problems with uneven colors.)
Note: The print heads are components that ware out. Periodic replacement is required,
with the frequency of replacement depending on use.

When Normal Cleaning Is Not Effective

Medium Cleaning

When problems such as dot drop-out are not resolved by normal cleaning, perform the
more forceful "medium cleaning" to remove clogging from the print heads.
Procedure
EJ-640 Maintenance Guide