Lexmark X548 Series, Руководство по обслуживанию

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Diagnostic information
2-53
7525-63 x
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Print quality—solid color page
Service tip: A solid color page is generally caused by a problem in the high-voltage
controller or an incorrect high voltage in the printing process resulting in toner
development on the entire photoconductor drum.
Step Questions / actions Yes No
1
Replace the photoconductor unit (part of the
imaging unit). Remove the imaging unit and
remove the developers. Place the original
developers in the new photoconductor, and
then replace the imaging unit. See
“Developer
unit removal” on page 4-47
.
Does this fix the problem?
Problem resolved. Go to step 2.
2
A faulty printhead can cause the problem. To
test the printhead for solid colors, place a
narrow strip of paper over the gap between the
developers. Make sure the paper stays in
place when you replace the imaging unit. This
will block the laser from discharging the
photoconductors. Print a Quality Test Page.
Does the page have a white vertical band?
Replace the printhead. See
“Printhead removal” on
page 4-61
.
Go to step 3.
3
Check the high-voltage contact from the HVPS
to the photoconductor charge roll. Ensure the
contact springs are properly mounted and that
the charge roll contact spring is making good
contact with the HPVS spring that runs through
the left printer frame. See
“Toner cartridge
contacts removal” on page 4-64
to view the
proper mounting and for removal procedures.
Are the spring(s) defective?
Replace the transfer contact
assembly. See
“Toner
cartridge contacts
removal” on page 4-64
.
Go to step 4.
4
Turn the printer off, and check the continuity of
the HVPS cable.
Is there continuity?
Go to step 5. Replace the cable
assembly.
5
Replace the HVPS. See
“High-voltage power
supply (HVPS) with spring assembly
removal” on page 4-40
.
Does this solve the problem?
Problem resolved. Replace the RIP board. See
“RIP board removal” on
page 4-19
.