Canon CR-2 AF Digital Non-Mydriatic Retinal Camera Manual
46
7 Troubleshooting
Symptom
Cause and remedy
The split lines are not visible.
The patient's pupil is not dilated enough. Dilate the patient’s
pupil. If the pupil is still too small, enable the small pupil
photography function (see page 33).
Eyebrows or eyelashes are blocking the pupil. Instruct the
patient to open his/her eye wider.
The patient's eye is opacity. Focusing cannot be performed
with the split lines.
The diopter compensation lens is inserted. Press the diopter
compensation button to be no diopter compensation.
The split line lamps are not lit.
pupil. If the pupil is still too small, enable the small pupil
photography function (see page 33).
Eyebrows or eyelashes are blocking the pupil. Instruct the
patient to open his/her eye wider.
The patient's eye is opacity. Focusing cannot be performed
with the split lines.
The diopter compensation lens is inserted. Press the diopter
compensation button to be no diopter compensation.
The split line lamps are not lit.
The split lines do not align.
The diopter of the patient’s eye is outside the range of –10 to
+15D.
Use the diopter compensation function, turn the focus ring, and
focus on the position where the images of the retina look clear.
+15D.
Use the diopter compensation function, turn the focus ring, and
focus on the position where the images of the retina look clear.
Cannot capture good images.
The patient's pupil is not dilated enough. Dilate the patient’s
pupil. If the pupil is still too small, enable the small pupil
photography function (see page 33).
The retinal camera and the eye are not aligned. Align them
correctly.
Focus the image.
Eyebrows or eyelashes are blocking the pupil. Instruct the
patient to open his/her eye wider.
The patient's eye is opacity. Clear images cannot be captured if
this is the case.
Adjust the flash intensity, the diopter compensation, or the
small pupil photography function.
The objective lens is dirty. Clean the objective lens (see page 40).
The patient is wearing contact lenses. Instruct the patient to
remove his/her contact lenses.
pupil. If the pupil is still too small, enable the small pupil
photography function (see page 33).
The retinal camera and the eye are not aligned. Align them
correctly.
Focus the image.
Eyebrows or eyelashes are blocking the pupil. Instruct the
patient to open his/her eye wider.
The patient's eye is opacity. Clear images cannot be captured if
this is the case.
Adjust the flash intensity, the diopter compensation, or the
small pupil photography function.
The objective lens is dirty. Clean the objective lens (see page 40).
The patient is wearing contact lenses. Instruct the patient to
remove his/her contact lenses.
Black spots or any artifacts
appear in the same place in every
captured image.
appear in the same place in every
captured image.
There is dirt or dust on the objective lens. Clean the objective
lens (see page 40).
Dirt or dust is stuck to the image sensor of the digital camera.
Use the self-cleaning sensor unit to clean it (see page 41).
lens (see page 40).
Dirt or dust is stuck to the image sensor of the digital camera.
Use the self-cleaning sensor unit to clean it (see page 41).
White spots are visible on the
captured image.
captured image.
The objective lens is dirty. Clean the objective lens (see page 40).
The patient's eyelashes are interfering with the image. Instruct
the patient to open his/her eye wider, then capture another
image.
The patient's eyelashes are interfering with the image. Instruct
the patient to open his/her eye wider, then capture another
image.
No observed or previewed images
are displayed properly on the
external monitor.
are displayed properly on the
external monitor.
Configure the settings to output to the external monitor on the
Rics NM 2.
Use a monitor having a full high definition (1920 x 1080)
resolution. For details, please contact your sales representative
or local Canon dealer.
Rics NM 2.
Use a monitor having a full high definition (1920 x 1080)
resolution. For details, please contact your sales representative
or local Canon dealer.
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