Nidek Medical CP-690, Service Manual

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4 - 11
4.10 The Polarized Chart does not Disappear.
Replace the chart ASSY.
(See 5.5.)
Is the refractor used to polarize the
chart?
Is the main body tilted?
Y
Y
N
Is the trial lens used to polarize the
chart?
Y
Does the polarized chart
image disappear by moving
the lens?
N
Are the polarizing glasses used to
polarize the chart?
Y
Does the view change by
reversing the right and left
of the glasses?
Y
End
Y
N
N
Replace the polarizing glasses.
Install the main body on a stable and
level surface.
N
Is the projected chart tilted? Adjust the initialized position.
(See 6.1.)
Y
N