Kowa K9L48B, Service Manual, Page: 44 / 60

GG-09001 Edition 1.3
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9-3 Cleaning objective lens
①
Turn on
POWER switch
.
②
In order to identify soils on the objective lens clearly, reduce room’s luminance, select
Mydriatic Mode, and choose “ visible light” for Illumination light. Turn the observation lamp
intensity selector knob to “
MAX”.
③
Follow the steps described in “9
-1 Preparing for lens cleaning
” and “9
-2 Lens cleaning
procedures
” to clean the objective lens. Since the objective lens is a large lens, you may
clean the lens using a sheet of cleaning paper folded into a small piece and held by your
fingers. However, make sure that you leave no fingerprint on the lens surface while cleaning.
④
After the end of the lens cleaning procedure, turn the observation lamp intensity selector knob to
the 10 o’clock position.
⑤
Turn off
POWER switch
.