Cis Module Assembly Service Check - Lexmark 4300 Series Service Manual

FRU
Carrier Assembly

CIS module assembly service check

FRU
CIS Module Assembly
Action
Check the following parts for wear or damage:
• Printhead cartridge latch
• Latch spring
• Carrier
• Printhead cables
Reseat the printhead cables in the system board.
If any of these parts are defective, replace the carrier
assembly. Go to "Carrier assembly removal" on
page 4-14.
Check the gold-plated contacts located on the inside
(rear) of the printhead carrier for dirt, wear, and
damage. Use a clean, damp cloth to clean the
contacts. Let the contacts dry completely. If the gold
contacts are damaged, replace the carrier assembly.
Go to "Carrier assembly removal" on page
If the symptom remains, replace the system board. Go
to "System board removal" on page
Action
If CIS module does not move, check
connector J17 on the system board. If
connection is okay, check for approximately
1 V dc on pins 1, 2, 3, and 4. If the voltage
is incorrect, replace the system board. Go
to "System board removal" on
page 4-16.
If the lamp does not come on as the CIS
module assembly is scanning or moving,
check connector J16 on the system board.
If connection is okay and the lamp still does
not work, replace the scanner module
assembly. Go to
assembly removal" on page
4-16.
"Scanner module
4-7.
Diagnostic information
4421-XXX
4-14.
2-11