Lexmark C77X, Service Manual

Page: 311 / 480

Repair information
4-79
5061
Color printhead electronic alignment
After replacing a color printhead:
1.
Select Alignment from the Diagnostics Menu.
2.
Select the color of printhead you are replacing.
3.
Select Quick Test .
Test pages are printed.
4.
Adjust the Step 1 settings, based on the Test pages.
•
Follow Step 1 of the instruction on the Test pages. The goal is to change the values until the Test
page shows A is within ±1 from B.
Note: If fine adjustment lines do not line up, then use coarse alignment.
•
For Step 1 (top margin), press or on the operator panel to adjust the top margin. Press to
submit the change. Press or to adjust the right margin. Press to submit the change.
•
After each adjustment, print another set of Test pages by pressing and selecting Quick Test to
verify the change.
•
Repeat Step 1 until A is within ±1 from B, then go to step 2.
5.
Adjust the Step 2 settings.
•
Follow Step 2 of the instructions on the Test pages. The goal is to change the value until the Test
page shows A
and B are within ±1.
•
For Step 2 (top margin), press or to adjust the top margin. Press to submit the change.
•
Press or to adjust the right margin. Press to submit the change.
•
After each adjustment, print the Quick Test pages to verify the change.
•
Repeat Step 2 until A and B are within ±1, then go to step 3.
6.
Adjust the Step 3 settings.
•
Follow Step 3 of the instructions on the Test pages. The goal is to change the value for both the left
and right margins until the Test page shows C and D within ±6.
•
After each adjustment, print another set of Test pages to verify the change.
•
Round any fractional numbers up to the nearest whole number. For example: (1+2)/2 = 1.5 rounds to
2.
•
Repeat Step 3 until C and D are within ±6. When they are, you are done.
7.
Exit Diagnostics mode.
Installation note : Be sure to replace all cable ties.