Inspection And Maintenance - Casio UP-250 Technical Manual

Inspection and Maintenance

Proper performance of the inspection and maintenance procedures described below allows this
unit to perform for the years of trouble-free operation for which it is designed.
Maintenance Procedures
The inspection procedures described here are divided between two types: daily inspection,
which can be performed by those who use the unit on a daily basis, and periodic inspection, to
be performed by individuals who have a more detailed technical knowledge of the unit.
Daily inspection
Setup
Paper particles, paper
scraps, foreign matter
Periodic inspection
Checkpoints
Dust, paper particles, or
dirt on and in the printer
Lubrication
Operation check
Shape of the springs
Ribbon cassette
Inspection item
Check for proper connection of cables.
Check for proper installation of roll
paper and ribbon cassette. Is the
ribbon passing along the proper route?
Check the ribbon for damage.
Open the roll paper cover and make
sure there are no large pieces of paper
or other foreign matter present.
Standards
No dust, paper particles, or dirt should be
allowed to build up on or in the printer.
No small pieces of paper should be
left in the paper path.
See the "Lubricants" section.
When each printer component is
checked, no abnormalities should be
found.
No spring should be bent or deformed. Replace any deformed springs.
The ribbon cassette should be properly
installed in the printer.
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Action
Reconnect any cables that have
come loose.
Correctly install roll paper and the
ribbon cassette.
Replace the ribbon cassette, if
damaged.
Clean out any paper or foreign
matter.
Remedies
Clean the printer thoroughly with a
vacuum cleaner.
Remove any pieces of paper from
the paper path.
Lubricate the points listed in the
"Lubrication Points" section.
Check the printer following the
Troubleshooting flowcharts in
Chapter 4.
See "Replacing the Ribbon Cassette"
in this chapter.
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