High Frequency Bands - Lexmark X940e Service Manual

High frequency bands

Step
1 Check the four PC cartridges for proper installation.
Check the PC cartridge connections.
Are the PC cartridge connections free of excess wear
and contamination?
2 Replace the four developer units and four developer
"Developer unit assembly removal"
carriers. Go to
on page 4-52 and
replacement" on page
Does the problem remain?
3
Replace the printhead. Go to
removal" on page
Does the problem remain?
4 Re-adjust the color registration (Regcon) for the new
printhead. Go to
page 4-257.
Does the problem remain?
5 Check the upper printer engine card assembly.
Replace the upper printer engine card assembly.
Go to "Upper printer engine card assembly removal"
on page 4-77.
Perform a print test.
Does the problem continue?
Check
"Developer carrier removal and
4-56.
"Printhead assembly
4-95.
"Color registration (RegCon)" on
Yes
Go to step 2. Correct and
clean
contaminated
pins, or replace
the appropriate
PC cartridge or
connector.
Go to step 3. Problem solved.
Go to step 2. Problem solved.
Go to step 3. Problem solved.
Replace the RIP Problem solved.
card assembly.
"RIP card
Go to
assembly
removal" on
page 4-73.
Diagnostic information
7510
No
2-235