Diagraph I.V./700, Service Manual

Page: 38 / 50

5750-212
Revision A
Page 38
4 Type the value from the bottom of the label iden-
tified as "Column Dot =". Press Enter.
5 Press SET-UP then J. The LCD will show "Dot:
1". The controller is waiting for a dot diameter
value for the dot from the first valve in the print-
head.
6 Refer to the "Dot Size" value for valve 1 on the
printhead label and enter it at the prompt. Press
ENTER when done. Repeat this operation for all
seven valves.
7 After typing the label value for dot 7, press SET-
UP. The LCD will show "Factory Setting Y/N?"
Select 2-YES.
8 Press Set-Up then K. The LCD will show "1st Dot
Time:000 sec" Accept this default time by press-
ing ENTER. If the controller shows value other
than zero, change that value to zero and press
ENTER.
9 The LCD will display "1st Dot Adjust.: 1." Press
ENTER.
10 The second line of the LCD will display "Dot
Adjustment: 00". Refer to "1st Dot" for valve 1
on the printhead label and type it at the prompt.
Press ENTER when done.
11 Repeat the procedure from steps 7 and 8 for all
seven dots. After the seventh dot, press SET-UP.
The LCD will prompt for "Factory Setting Y/N".
Select 2 = YES.
Printing Problems
Do not make any adjustments described in this
section until you have eliminated incorrect settings
on the controller as a probable source of the
problem.
One or more of the printed dots is consis-
tently too small.
Single Dot Diameter Adjustment
This function allows you to change the dot
diameter of individual dots by altering the stroke,
in microseconds, of a piston in an ink channel.
1 Press and hold ALT+INFORMATION.
2 Plug in the barrel connector.
3 Release the keys when the LCD shows "Informa-
tion."
4 Press SET-UP
Information
1-Unused Messages
Dot #4 reduced by 25 Dot #4 at preset value Dot #4 increased by 40