Canon TX-F, Руководство по эксплуатации

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8.2 Before Calling a Service Person
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8.2.2 If Message Such as Following Appears on the Monitor
If message does not disappear even after taking the countermeasures indicated in this sec-
tion, contact Canon representative or distributor.
Message / Display Cause Remedy
D
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tom
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ent
[1] EYE CANNOT BE FOUND
PRESS START SW AGAIN
The position of examinee’s eye
is off the automatic alignment
range.
Use the roller and trackball to
move the position of the exam-
inee’s eye on the monitor toward
the center a little more and press
the START switch again.
Examinee’s eye is moving rest-
lessly.
Have the examinee look at the
eye fixation lamp and press the
START switch again.
Or, if two bright dots are dis-
played on the monitor, measure-
ment will be performed if the
START switch is pressed timely
during alignment. However,
measurement error will occur if
the positioning is not accurate.
The pupil is obscured by eye-
lashes or eyelid.
Instruct the examinee to keep
his/her eye open wide, or help
them open the eye widely by lift-
ing up the upper eyelid lightly
with your fingers. Then, press
the START switch again.
Pupil is eccentric or deformed.
Use the roller and trackball to
move the position of the exam-
inee’s eye on the monitor toward
the center a little more and press
the START switch again.
The center of the pupil could not
be found due to effect of surgery,
etc.
Measure the eye manually.
Problem in surface of cornea.
Measure the eye manually. How-
ever, error may occur even in
MANUAL mode if the disease is
serious.
Effect of external light.
Do not expose the examinee’s
eye directly to bright artificial
light or sunlight.
[10] CANCELLED BY USER
The examiner has cancelled the
automatic measurement by
pressing one of the switches, or
measurement error has
occurred.
Press START switch again as
required.