Nidek Medical CP-770, Service Manual

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4 - 11
MCP8**RDA001A/E
4.8 The Chart does not Appear Properly When Looking at Polarized
Chart through the Polarizing Glasses.
4.9 The Beep Volume is Inappropriate.
Install the main body on a level surface. Is the main body tilted?
Is the projected chart tilted?
Is the refractor used as the check instrument for
test subjects?
Is the trial lens used as the check instrument for
test subjects?
When the polarizing glasses are used as the
check tool for subjects and the polarizing glasses
are reversed left and right, is the appearance of
the polarized chart changed?
Replace the chart ASSY. (See 6..1.6.2.)
Adjust the initial position. (See 7.3.)
Replace the chart ASSY. (See 6.1.6.2.)
Replace the polarizing glasses.
Does the polarized chart disappear when the trial
lens is moved?
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Replace the chart ASSY. (See 6.1.6.2.) Completion
Yes No
Adjust the beep volume.
(Refer to the operator
㵭
s manual.)
Is the symptom improved?
Replace the main board. (34801-BA01).
(See 6.2.)
Completion
Yes
No