High Frequency Bands - Lexmark C935 Service Manual

5057-XXX

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
carriers. Go to
on page 4-53
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 4-214.
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
Perform a print test.
Does the problem continue?
2-174
Printer Service Manual
Check
"Developer unit assembly removal"
and "Developer carrier removal and
4-57.
"Printhead assembly
4-104.
"Color registration (RegCon)" on
4-90.
Yes No
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.
Go to "RIP card
assembly
removal" on
page 4-86.
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