Maintenance
Inspection guide
The purpose of this inspection guide is to aid you in identifying the intervals, based on page count, at which parts must
be inspected (for visible physical damage), cleaned, or replaced.
If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you correct the
hazard.
As you service the machine, check for the following:
• Damaged, missing, or altered parts, especially in the area of the On/Off switch and the power supply
• Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover
• Possible safety exposure from any non-Lexmark attachments
Use the following table to determine when specified parts should be inspected:
EVERY
SERVICE
CALL
EVERY 100K EVERY 200K NOTES
MEDIA TRAY—ALL
Tray insert Inspect Inspect Replace
Media side guides Inspect Inspect Check for correct positioning.
Media end guide Inspect Inspect Check for correct positioning.
Separation pad Inspect Clean Damp cloth
MEDIA FEEDERS—ALL
Pick roller Inspect Inspect Replace Verify page count before replacing.
MPF feed rollers Inspect Inspect Replace
Sensor Clean Clean Brush or blower brush
TRANSFER ROLL
Transfer roll Inspect Inspect Replace
FUSER
Fuser Inspect Inspect Replace
Sensor (fuser exit) Clean Clean Blower brush
REDRIVE ASSEMBLY
Redrive assembly Inspect Replace
Lubrication specification
Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than those
specified in this service manual can cause premature failure. Some unauthorized lubricants might chemically attack
polycarbonate parts. Use Grease P/N 99A0394 Nyogel 744.
4514-420, -430
Maintenance
223
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