111.Xx Lsu Service Check; Fuser Service Check - Lexmark MS410 Series Service Manual

111.xx LSU service check

Action
Step 1
Check the LSU cables JVIDEO1 and JGLV1 for proper connection.
Are they properly connected?
Step 2
Inspect the LSU cables and connectors.
Are they free of damage?

Fuser service check

Action
Step 1
•
Check the fuser cables JTHERM1 and JEXIT for proper connection to
the controller board.
•
Check the cable PCN5 for proper connection to the power supply.
Are they properly connected?
Step 2
Are the cables JTHERM1, JEXIT and PCN5 free of damage?
Step 3
a
Turn off the printer.
b
Remove the rear door and cover.
c
Disconnect the fuser cable connected to PCN5 of the power supply.
d
Check for approximate correct resistance on the fuser cable:
• 220V fuser—43 ohms
• 110V fuser—10 ohms
• 100V fuser—8 ohms
Is the resistance equal to any of the above values?
Step 4
Check the fuser rollers, belts and gears for damage and debris.
Are they free of damage and debris?
Yes
Go to step 2.
Replace the controller
board. See
board removal" on
page
Yes
Go to step 2.
Go to step 3.
Perform an LVPS
service check. See
"LVPS service check"
on page
Perform a cooling fan
service check and LVPS
service check. See
"Cooling fan service
check" on page 99
and
check" on page
Diagnostic information
83
No
Reseat the cables.
Replace the LSU. See
"Controller "Laser scanning unit
(LSU) removal" on
164. page 213.
No
Reseat the cables.
Replace the fuser. See
"Fuser removal" on
page 211.
Replace the fuser. See
"Fuser removal" on
page 211.
84.
Replace the fuser. See
"Fuser removal" on
page 211.
"LVPS service
84.
4514-420, -430