4.1 OVERVIEW
Note following points, although adjustment item is same as Stylus Color 800.
Y
Since the program is not Basic but made by "C" Language and designed for the purpose of
repairing, it differs from the one on the manufacture line. Symptom of fatal error does not
occur, even if adjustment item is freely selected. Also, even if the waste ink sequence is
activated, important data such as various adjustment values or RIP Module are not cleared.
Y
Unlike Stylus Color 800, there is no selection on the screen for setting the destination, and only
confirmation of the model name appears on the initial menu.
Y
There is no Uni-D adjustment in Stylus Color 800, it is necessary to perform this for Stylus
Color 850. There is no rule that which adjustment (Bi-d adjustment or Uni-D adjustment)should
be done first. However, like the previous models, following adjustments should be done for the
mechanism around the head;(Refer to Table4-1 on the Service Manual of Stylus Color800 for
more details)
1) Initial Ink Charge 2)Head ID Input 3)Head Angular Adjustment 4)Head
Linear(height) adjustment 5)Head Gap Adjustment, then perform Bi-D adjustment or Uni-
D adjustment.
Y
Since the adjustment for Stylus Color850 supports Bi-d Communication, there are following
benefits.
T
Current Head ID value can be checked on the PC screen.
T
Current protection counter value can be checked on the PC screen.
T
Current adjustment values of Bi-D, Uni-D and Head Gap Adjustment can be checked on the
PC screen.
Y
Although the pattern, which is mixed with black and magenta is printed and checked for the
head gap adjustment in many of the previous models, please note that magenta portion is
mixture of magenta and cyan in the Stylus Color 850. There are some cases that the speed of
fired ink differs because of difference of color material even when the same amount of energy
is put through PZT. Therefore, color head itself can be checked by this pattern.
If you find a head that magenta and cyan are not mixed and each color can be distinguished
respectively, exchange the color head. Also, the head gap adjustment that a user can perform
through utility in the built-in function and printer driver, the pattern is printed out by black and
magenta, as it is same as in the previous models.
Y
The printer can print printing patterns 3 times in A4 size sheet for the Head Angular
Adjustment(Bk or CMY). After third printing is completed, the printer ejects the paper
automatically. If you can not complete the adjustment in one sheet, select "Head Angular
Adjustment" again and feed another paper sheet.
Y
2 A4 size sheets are necessary for A4 check pattern.
Rev. A
EPSON Stylus Color 850
Chapter4 Adjustment
4-1
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