Epson Stylus Pro 9500 - Page 80

EPSON Stylus Pro 9500 Revision A
Troubleshooting Outline 80
3. If the extra ink charge does not clear the clogged nozzles, confirm the following.
n There is no damage to or foreign materials in rubber of the Cap
Assembly
n The Cap Assembly valve is operating normally (if it is not, the Cap
Assembly will not properly absorb ink
n The Cap Assembly retention spring is working properly.
n The Cap Assembly retention ink tube is working properly.
n The ink tubes and pipes between the ink cartridges and printheads are
properly connected and are not damaged (check the nuts for tightness,
the O-rings for warping, and the tubes/pipes for ink leakage)
4. If after following the above steps the printout still shows missing dots, replace one of
the parts listed below and check the print out.
n Main Board
n Printhead(s)
UNEVEN PRINTING/POOR RESOLUTION
If printout quality suffers from unevenness, poor quality, or similar problems,
check the following.
1. Perform platen gap adjustment
Using the control-panel setting or the diagnostic-program function, check the platen
gap (bi-directional printing position as well as PG adjustment).
2. If this error occurs only when the user prints on custom or thick paper, (Use the control
panel paper thickness setting to correct the paper size and the print position (depending
on the paper-thickness setting, the location where the ink strikes the paper may
change))
3. If after following the above steps the printout quality has not improved, verify the
following.
n Head angle adjustment
n Head height adjustment
SMUDGED OR MARRED PRINTOUT (FRONT)
The front, or top, side of the paper can become smudged or marred if it rubs
against the printhead surface. If this happens, verify the following.
1. If the smudged area is just around the front or rear edge of roll paper, make sure the
margins (top and bottom) are set to 15mm on the control panel.
(When printing high-duty print jobs with the top and bottom margins set to 3mm, the
high volume of ink can cause the paper to warp and rub against the printhead surface.)
2. If the trouble occurs again, check the following.
n Check if the cap assembly or tension spring has come off.
(If this spring comes off, ink will remain inside the cap and ink adhering around
the head nozzle surface will end up adhering to the paper.)
CAUTION
n Before you uninstall the Main Board or a printhead,
make sure all cables are disconnected. After
installing the new board or head, make sure all
cables are properly connected; if cable connectors
not completely inserted, they can damage circuits
or the heads when current is turned on.
n Make sure you replace the correct head, B head or
C head.
CHECK
PO INT
When using the “Adj.B (or C) Head Skew” as well as
the “Adj:PG Check Height” functions, always perform
the Gap Adjustment or Bi-directional Position
Adjustment operation.