Bi-D Adjustment - Epson Stylus Pro 5000 Service Manual

Stylus Pro5000

5.1.1.7 Bi-D Adjustment

Bi-D adjustment is performed only to the black nozzle in the left head(for
dark colors), and its procedures are done like head gap adjustment;
printing→checking→adjustment→checking. This adjustment should be done
until 2 vertical lines; one even line and one odd line match each other and
make one straight line. Following shows conditions which require this
adjustment.
Table 5-11. Conditions that require Bi-D Adjustment
No. Conditions
1 Head Exchange
2 C228 DRV Board
Exchange
3 Other environmental
changes
Rev. A
Reason/Background
If the head is exchanged, new head ID or
various characteristics are newly
registered in the C228 DRV board.
Because of this, it becomes necessary to
change the head gap adjustment value
and Bi-D adjustment value.
Head gap adjustment value and Bi-D
adjustment values are stored in the
EEPROM on the C228 board by
parameter, which is electrical Timing
corrected data. Therefore, if C228 DRV
board is replaced, since these data are all
cleared, it becomes necessary to register
them again
In the ink jet printers, there are cases that
the adjusted data in the factory does not
work as it is supposed to under the
particular environments. As a more
specific example, there is a problem that
the perfect color matching becomes
difficult by the adjusted head gap values
in the factory, because ink viscosity
changes in the extremely cold or hot
environments. Considering this kind of
possibilities, the user is able to adjust
directly from the driver in the present
EPSON ink jet printers.
Following shows its procedure.
Step1. Connect PC and printer with printer cable and turn both PC
and printer on.
Step2. Type the following sentence on the DOS or DOS Prompt.
C:\mode lpt1:_retry=p
WARNING
Typing this sentence prevents PC from going to
Time Out Error, maintaining the scan mode until
the PC is able to recognize the printer ID correctly,
which comes back from the printer. If this
operation is not performed, the program may hang
up on the initial screen.
Step3. Type as following on the DOS Prompt for exclusive
program; Stylus Pro.5000.EXE attached with this manual.
A(In case of FD): \spro.5000.EXE
WARNING
When typing the sentence above, the program
hangs up on the initial screen, if the printer is not
turned on. In this case, start again from Step1.
Chapter5 Adjustment
5-27