Troubleshooting; White Fine Line / Banding / Missing Dot / Scratchy Printing / Blurred Printing - Roland SOLJET PRO III XJ-540 Service Notes

6 Troubleshooting

6-1 WHITE FINE LINE / BANDING / MISSING DOT / SCRATCHY PRINTING / BLURRED PRINTING

Missing dot or
deflected-fired dot
appears on the test
pattern.
To 1-10
NO CHECKING POINT
The machine is not
1
installed in an appropriate
location
The media is not set up
2
correctly
Temperature of the
3 Preheater / Print heater /
Dryer is inappropriate
Bi-directinal adjustment is
4
not correct
FEED CALIBRATION is
5
not correct
Scanning distance of the
6
Head Carriage
7
[PERIODIC CL.] setting
Wrong profile for the
8
media
9
Head Rank is not correct
10
Head is not adjusted
11 Foreign substances
12 Wiper wears out
Yes
No
ACTION
Install in a location that
is level and stable
offering good operating
conditions
Load and set up the
media correctly at the User's Manual
correct position
Set appropriate
User's Manual
temperature
Correct setting for
User's Manual
Bidirectional Printing
Apply Calibration User's Manual
Set the [FULL WIDTH
User's Manual
S] to [FULL]
Set [PERIODIC CL.] to
User's Manual
[NONE] or [Page]
Use the suitable profile
[3-1 HEAD
Set Head Rank
REPLACEMENT]
[4-4 HEAD
Head Alignment
ALIGNMENT]
Manual Cleaning User's Manual
[3-2 WIPER
Wiper Replacement
REPLACEMENT]
Perform Normal
Cleaning
Not Improved
*Several Normal Cleanings and a
Powerful Cleaning do not improve the
printing result.
To 11-16
REFERENCE
Never install the machine in a location where it is tilted or where it may
wobble or librate.
Load the media while the left media holder is positioned close to the
left edge. Also, never secure the media holder in place before loading
the media. Loading media without following the steps described in the
User's Manual may make smooth and straight media feed impossible
or affect the print quality.
Feed is not smooth when the media is tilted or tensioned unevenly on
the left and right. Hold the media at the center and pull it out straight
and make sure all areas of the media are taut before setting up the
media.
When the temperature of the print heater is too high and the ink dries
too fast, it may result in banding because the dots stay small after
landing on media.
When the temperature of the print heater is too low and the ink dries
too slow, it may result in dark banding because the dots stay large and
overlap each other after landing on media.
If the calibration is not correct, white fine lines caused by gaps or dark
lines caused by overlaps appear.
In addition, a correction value set while printing is in progress is saved
only as a setting on the machine. In case of the calibration value made
on the RIP to take precedence, the correction value set by printer is
ignored.
Set [FULL WIDTH S] to [FULL] to uniform the heating time on each
pass. This may improve printing quality.
When this is set to [1 min] to [990 min], self cleaning is performed
while a printing is paused. It may cause uneven printing at the part
before and after cleaning.
Head Rank setting affects the amount of the fired Ink. If it is
not set properly, the ink dots are not fired in appropriate sizes.
Check whether each [BIAS], [VERTICAL], [HORIZONTAL] and [BI-
DIR.DEFAULT] settings are correct.
Nozzle condition becomes poor due to the foreign substances stuck on
the surface of the Head.
Wiping does not work effectively and foreign substances left
on the head surfaces cannot be removed completely.
6-1
Improved
Completed
OUTLINE