Canon CR-2 - Manual (Page 40)

40
If any of the symptoms listed here occurs or if a warning appears in the Rics NM 2 while using the
CR-2, try the relevant remedy described below.
If these remedies do not eliminate the symptoms or the warning, turn off the power and contact
the Canon representative or distributor from whom you purchased the CR-2. Be ready to provide a
detailed description of the symptoms and message.
Symptom Cause and remedy
The power lamp does not light
when the power is turned on.
The power cord has been disconnected. Turn off the power to
the retinal camera and reconnect the power.
The power cord has been cut. Contact the Canon
representative or distributor from whom you purchased the CR-
2.
A buzzer sounds (pi-pi-pi) and the
operation panel lamps blink when
the power is turned on.
A system error has occurred. Contact the Canon representative
or distributor from whom you purchased the CR-2.
The observation monitor is dim
and hard to see. Adjust the brightness of the observation monitor. See the Rics
NM 2 manual.
The observation monitor does not
turn on.
Turn on the digital camera.
An error appears (Err xx) on the
observation monitor. A malfunction has been detected in the digital camera. Turn off
the power to the retinal camera and then turn it on again.
The working distance dots are
hard to see.
The observation light is too bright. Reduce the observation light
brightness.
The split lines are hard to see.
The working distance dots are not
visible.
The retinal camera and the eye are not aligned. Align them
correctly.
Flare is visible.
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.
Eyebrows or eyelashes are blocking the pupil. Instruct the
patient to open their eye wider.
The patient's eye is cloudy. Focusing cannot be done with the
split lines.
The diopter compensation knob is set to either negative or
positive. Set it to the 0 position.
The split line lamps are not lit.
The split lines do not align.
The diopter patient's eye is outside the range of –10 to +15 D.
Use the diopter compensation function, turn the focus ring, and
focus on the position where the images of the retina look clear
at the same time.
7
Troubleshooting