Epson Stylus Pro 4800 Portrait Edition, Service Manual

Page: 99 / 506

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Product Description Operating Panel 99
Table 1-42. Nozzle Check Pattern
Paper skew check
Feeds a specified amount of paper for checking the skew level, and detects the
Position paper edge before and after feeding with the sensor to check the
error.
When the paper feed amount is entered after the paper initialization, the edge
sensor detects the left edge of the paper (home position side) after feeding
operation and the printer displays the difference with that of before feeding on
the panel.
The first paper edge detection determines the paper skew judging standard
position in the firmware.
NOTE 1: If the paper check LED blinks/lights, the paper detection error
currently occurs. In this case, perform the paper skew check again
after releasing the lever once.
2: If the skew result indicates [99.999mm], it could be caused by the
following reason(s). In this case, perform the paper skew check
again after removing the cause(s).
• The paper width has been changed by 3mm at one of the
paper edges compared with the previous paper width detection.
• The paper is loaded too close to the home position side.
• The lever is pulled up or the cover is opened during paper feed.
3: The panel keys are invalid during paper skew check.
4: For the indicated value, "+" indicates the home position side and "-
"indicates the other side.
PRINT MENU
This menu is intended to print test patterns and adjustment values. An
adjustment parameter pattern is printed followed by a test pattern.
The following table shows the printable patterns.
Version : A<Z><xxxx>
Maintenance Tank : <yyy>%
Head Rank ID :xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Color ID : xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx
xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx
Vertical Alignment [VSD1]
Vertical Alignment [VSD2]
Vertical Alignment [VSD3]
Horizontal Alignment [VSD1]
Horizontal Alignment [VSD2]
Horizontal Alignment [VSD3]