Remedies For Print Quality Troubles - Epson Stylus Pro GS6000 Service Manual

Epson Stylus Pro GS6000

3.5 Remedies for Print Quality Troubles

This section provides troubleshooting of print quality troubles classifying them by observed symptom.
Symptom
Dot missing The nozzles has been clogged with ink, and the dot missing has occurred.
Due to a failure of some of the parts listed on the right column, cleaning or firing
ink cannot be made normally.
Ink smear (printed area) The paper is contaminated by ink smear in the paper feed path.
Paper is rubbed against the printhead.
Because the vacuum fan is not operating properly, the paper is not held flat during
printing.
Drying ink is insufficient.
There is a foreign material or dirt absorbing ink around the PRINT HEAD(s).
The paper is buckling.
The color dots are smearing and mixing into each-other.
TROUBLE SHOOTING
Description
Remedies for Print Quality Troubles
Remedy/Points to be checked
Run cleanings (Cleaning 1, 2, 3, 4, Washing).
Replace the PRINT HEAD(s) (p.158).
Inspect the following parts, and correct/replace them as necessary.
PUMP ASSY (p.167)
The pump tube is disconnected.
Some portion of the pump tube has become flat.
The pump tube is broken.
CLEANER HEAD (p.166)
The cleaner blade is contaminated with foreign material or the blade is broken.
WIPER ASSY (p.166)
The WIPER ASSY does not operate due to a trouble of the solenoid.
There is something wrong with the connection of the ink cartridge, ink holder,
tube, VALVE ASSEMBLY, HEAD, or PRINT HEAD(s).
The head FFC is not connected correctly.
PRINT HEAD(s) (p.158)
MAIN BOARD ASSY (p.110)
Check the PRESSURE ROLLER(s) for ink smudges, and clean it if any dirt is
observed.
Widen the platen gap.
Turn on the printer in the serviceman mode, and check whether the VACUUM
FAN(s) operates normally (p.234). If any abnormality is found, check the
connection status and replace the defective VACUUM FAN if necessary.
Raise the heater temperature and make the print again.
Turn on the printer in the serviceman mode, and check whether the heaters operate
normally (p.234). If any abnormality is found, check the connection status and
replace the defective heater if necessary.
Check around the PRINT HEAD(s) for a dirt or foreign material, and remove it if
any.
Re-load the paper once the set heater temperature is reached.
Make sure the heater temperature is not set too high.
The ink dots dry too slowly: try increasing the heater temperature.
Revision F
60
Confidential