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7 Maintenance and inspection
7.3.2 Cleaning and disinfection of the parts where patients contact the instrument (the
forehead base, the chin rest, and the grip (optional accessory))
Wipe the forehead rest (including K9L-HR56 (optional accessory)), head bands, the chin rest (in case not
using the chin paper), and the grip (K9L-GR56 (optional accessory)) with rubbing alcohol as soon as a
patient completes the examination.
7.3.3 Cleaning the exterior and the LCD monitor
When exterior of this instrument other than described above is dirty, follow the steps below to clean it.
1) Wipe the surface with rmly squeezed dampened soft cloth.
2) Wipe off the obstinate dirt with soft cloth, after dampening it in water or lukewarm water with diluted
small amount of neutral detergent and rmly squeezing it.
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Do not use solvents such as thinner and benzene for cleaning the exterior.
When the LCD monitor is dirty, clean according to the following steps.
1) Wipe the LCD monitor with soft cloth, after dampening in water and rmly squeezing it
2) Lightly wipe the LCD monitor with dry and soft cloth before the surface becomes completely dry.
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Do not wipe all the surface at a time, and nish area by area
Water drops leave spots when they are dried.
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Do not use any liquid other than water or rubbing alcohol for cleaning the LCD monitor..
7.4 Replacement of consumables
7.4.1 Replacement of observation illumination lamps
1) Turn off the power switch and unplug the power plug from the electrical outlet.
Wait for about 30 minutes and cool the lamp unit.
2) Loosen the lamp cover screws with a at-head screwdriver, and
remove the lamp cover.
Hold a hand toward the internal black lamp cover, and touch it if
you do not feel the heat to conrm it is cool enough.
3) Loosen the inside lamp cover screws with a at-head screwdriver.
Loosen the 3 screws bit by bit, and remove the lamp cover when
all screws are loosened. The observation illumination lamp comes
out with the cover from the lamp house.
4) Hold a hand toward the illumination lamp, and lightly touch it if you do not feel the heat to conrm it is
cool enough.