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Service Guide ML320/ML321
Chapter 3 Maintenance & Disassembly
3.4
CLEANING
3.4.01 General Information
An accumulation of paper dust is the most frequent cause of print quality problems in a dot matrix
printer. Small pieces of paper can cause paper jams. A dirty platen will smudge paper. It is
important to clean the printer regularly, paying particular attention to the printhead area and
paper paths.
If the lubrication procedures are not performed properly, the printer will require more frequent
cleaning. Excessive lubricant attracts dust and accumulations build up quickly.
Keeping the covers in place and performing the cleaning procedures correctly will help ensure
the highest quality printer output.
3.4.02 Cleaning Schedule
Routine inspection and cleaning should be performed as listed below.
Every six months
or
300 hours of operation
3.4.03 Cleaning Tools
Soft, Lint-free Cloth
Cotton Swab
All-purpose Cleaner
Platen Cleaner
Vacuum Cleaner
Contact Kleen (P/N 51802301)
WARNING: Power OFF the printer before cleaning it.
3.4.04 Areas to be Cleaned
Areas To Be
Cleaned
Disassembly
Procedure
Tools
Description Of
Cleaning
Paper Feed Paths
and Pins
N/A
Vacuum
Cloth
All-purpose cleaner
Remove any paper
particles. Wipe or
vacuum all dirt, dust,
etc.
Ribbon Protector
3.2.03
Cotton swab
All-purpose cleaner
Remove ink residue
