Tomey UD-600, Operator'S Manual

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6-23
6. Troubleshooting
Cause 2
The measurement mode is set as auto measurement
“Chin” or “Hand”.
Remedy
Set the mode as "Manual". (See "3.6.3 e)
Setting of the measuring method".)
z z
z z
z
Measured data is not stable or correct, which largely differs from
those measured previously.
Cause 1
The connection of the biometry probe is not cor-
rect.
Remedy
Connect the biometry probe correctly. See
"3.2.1 b) Connecting of the biometry probe".
Cause 2
The cornea is excessively compressed with the
probe.
Remedy
In case of using the chinrest, provide a suffi-
cient length of the probe cord between the
probe and the cord hook so that the cord may
not be applied with undue pulling force..
("3.6.6. b) Handling of the slider for measure-
ment when using the chinrest").
Cause 3
The position of the retinal waveform cursor is not
proper.
Remedy
Set the retinal waveform cursor on just left
side at the actual retinal echo. Be careful not
to contain any noise between the cursor and
the retinal echo.
Cause 4
The Biometry probe is not properly applied.
Remedy
Place the probe vertically to the center of
the cornea so that retinal echo steeply
stands.
Cause 5
The corneal protective gel is excessively applied,
while setting the contact mode.
Remedy
Excessive amount of the gel causes a gap
between the probe and the cornea, result-
ing in longer measured data than actual val-
ues. Appropriate amount of the gel should
be applied.