Huvitz HDR-7000, Service Manual

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4.11 Cleaning lens
Clean the lenses in the Refractor Body by following the procedure below.
(1) Remove the cover glasses from the test window of Refractor body at both the
examinee’s and examiner’s side.
(2) Execute the Lens Check function in the Engineer Menu mode.
(3) Use R/L or OU button to select body.
(4) Turn the dial in clock-wise insert lenses one by one.
(5) Clean the lenses gently by using alcohol swabs.
(6) Assemble the parts in reverse order after the cleaning procedure is completed.