Epson Stylus Pro 7400 Service Manual page 93

EPSON Stylus Pro 7400/7800/9400/9800
Shifting amount of the lower lines
The following illustrates and explains the shifting amount of the lower lines
printed on the pattern assuming that the shift amount is "x" micrometers when
the paper thickness is changed by 0.1mm.
Head
A B C D
Figure 1-23. Shifting Amount of the Lower Lines on the Pattern
Note : AB: Gap adjustment value when paper thickness is +0.1mm
AC: Present gap adjustment value
AD: Gap adjustment value when paper thickness is -0.1mm
Given that the gap regularly corresponds to the change in paper thickness;
X* = AC - AB = AD - AC
* The "x" value is 240 cps or 14.42 micron meters in VSD2 mode.
The value is saved on the NVRAM, and is left changeable.
Example) Gap adjustment when paper thickness is 0.2mm
Pattern Gap between the Upper
number and Lower lines
1 +2X
2 +1X
3 ± 0
4 -1X
5 -2X
6 -3X
7 -4X
8 -5X
Product Description
Paper thickness when adjusting gap + 0.1mm
Paper thickness when adjusting gap
Paper thickness when adjusting gap - 0.1mm
Pattern Gap between the Upper
number and Lower lines
9 -6X
10 -7X
11 -8X
12 -9X
13 -10X
14 -11X
15 -12X
16 -13X
1.4.4.32 Cutter Replacement
The "Cutter Replacement" in the MAINTENANCE menu displays instructions for
replacing the cutter on the LCD panel in accordance with operations made by the user.
Procedure for replacing the cutter
1. Enter the "Cutter Replacement" menu using the panel.
(You can also access the menu just by holding down the [Paper Select
button for three seconds)
2. Open the front cover following the instruction displayed on the LCD.
3. Follow the next instruction to replace the cutter.
4. Close the front cover when the instruction is displayed.
NOTE: The cutter replacing work can be interrupted by the following
errors. The printer displays the error message for three seconds
and returns to the MAINTENANCE" menu screen.
• Ink end.
• Ink cartridge model wrong.
• CSIC contact error.
• Ink cartridge failure.
• No ink cartridge.
• When thick paper is set.
Correcting improper cutter installation
The printer runs a cutter failure confirmation sequence (displays confirmation
messages or instructions to inform the user to check the cutter) under the following
conditions.
When a cutting error is detected for the first time after replacing the cutter.
When a cutting error is detected for the first time after a paper jam-related
service call error occurs.
When a cutting error is detected for the first time after the printer runs the
cutter failure confirmation sequence. If the sequence is carried out two times
in a row, a cutting error message is displayed until the corrective action is
taken.
Control Panel
Revision B
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