Lexmark 7300 Series, Service Manual

Page: 34 / 88

4418-X6X
2-14
Service Manual
CIS module assembly service check
Carrier Assembly Check the following parts for wear or damage:
• Printhead cartridge latch
• Latch spring
• Carrier
• Printhead cables
Ensure that all printhead cables are fully seated.
If any of these parts are defective, replace the carrier
assembly. Go to
“Carrier assembly with cables, belt,
and cable clip removal” on page 4-18 .
Check the gold-plated contacts located on the inside
(rear) of the printhead carrier for dirt, wear, and
damage. Use a clean cloth dampened with water to
clean the contacts. Let the contacts dry completely. If
the gold contacts are damaged, replace the carrier
assembly. Go to
“Carrier assembly with cables, belt,
and cable clip removal” on page 4-18 .
If the symptom remains, replace the system board. Go
to
“System board removal” on page 4-14 .
Unit/Problem Action
CIS Module
Assembly If the CIS module does not move, ensure that the belt
is installed and is not binding. Check the scanner
motor connector JP3 on the system board for proper
connection. If the CIS module still does not move,
replace the system board. Go to
“System board
removal” on page 4-14 .
If the lamp does not come on as the CIS module
assembly is scanning, check connector J12 on the
system board. If the connection is okay and the
problem remains, replace the scanner module
assembly. Go to
“Scanner module assembly
removal” on page 4-6 .
Unit/Problem Action