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6 Troubleshooting
Abnormal performance of the instrument
Symptom What to check · State of equipment Remedy
The button different from the
pressed button reacts during
LCD monitor operation.
It is out of calibration. Calibration must be performed.
You see nothing when you look
into the viewnder.
Non-mydriatic mode is enabled.
You cannot observe from the view-
nder in non-mydriatic mode.
LCD monitoring mode is enabled.
Press the LCD monitoring button
to change to the viewnder moni-
toring mode.
The focus dot and the working
dot are not displayed.
Alignment of the retinal camera is not
correctly adjusted.
Align the retinal camera correctly.
The ON/OFF switch is off.
Turn on the focus dot switch or the
working dot switch.
The diopter compensation button is
turned to “+” or “
”.
Focus dots and working dots are
not displayed when the diopter
compensation lens is inserted.
Is illumination light for monitoring too
bright?
When the retinal image is bright,
focus dots and working dots may
be lost. Decrease the amount of
illumination light for monitoring.
The external fixation target
does not illuminate.
Is internal xation target enabled?
The external fixation target and
the internal fixation target do not
illuminate at the same time. Select
the external fixation target at the
xation target selection button.
It is in the power saving mode.
Press a button on the operation
panel to cancel the power saving
mode.
The alarm does not sound.
Is alarm sound of the timer turned
off?
Turn on the alarm sound of the
timer in the setting. See 5.1.4.
All LED on the operation panel
turn on and off.
EHD07 or EHD08 is displayed. Turn off the power and stop using.