Canon CR-2 AF Camera
Frequently Asked Questions (10)
Who is authorized to use the Canon CR-2 AF, and can it be purchased by anyone?
The CR-2 AF must only be used by a doctor or a legally qualified person. In the USA, federal law restricts this device to sale by or on the order of a physician (Rx Only). The user is responsible for managing the usage and maintenance of the equipment. (Page 2)
What should I do if 5 short beeps sound and the operation panel lamps blink when I turn on the power?
Five short beeps with blinking operation panel lamps indicate that a system error has occurred. You should contact your sales representative or local Canon dealer immediately. (Page 45)
What is the minimum pupil diameter required to take images with the CR-2 AF, and what can I do if the pupil is too small?
The CR-2 AF requires a pupil diameter of 4.0 mm or greater under standard conditions. If the patient's pupil does not dilate enough, the small pupil photography function can be used, which allows imaging through pupils as small as 3.3 mm in diameter. (Page 47)
How do I clean the objective lens on the CR-2 AF?
First, use a blower to blow away any dust or dirt — do not use a brush and do not allow the blower to touch the lens. Then, slightly dampen a Canon-designated lens cleaning paper with lens cleaner and wipe the lens starting from the center in spirals toward the circumference, changing the paper until no dirt or streaks remain. Never wipe the objective lens with disinfectant ethanol, eyeglass cleaner, or silicone-coated paper, as these can corrode the surface or leave streaks. (Page 40)
What are the correct environmental conditions for using, storing, and transporting the CR-2 AF?
During use, the CR-2 AF must be kept at a temperature of 10 to 35°C, humidity of 30 to 90% RH (no condensation), and atmospheric pressure of 700 to 1060 hPa. For storage and transportation, the acceptable ranges are –30 to 50°C, 10 to 95% RH (no condensation), and 600 to 1060 hPa. The original packaging should be used when storing or shipping the unit. (Page 14)
Show all 10 questions
What should I do immediately if smoke, an unusual smell, or unusual noise comes from the CR-2 AF?
You must immediately turn off the power to the CR-2 AF and unplug the power plug, then turn off the power to all connected devices. Contact your sales representative or local Canon dealer immediately, as continuing to use the device under such conditions may result in fire or electric shock. (Page 9)
How do I disinfect the forehead rest and chin rest between patients?
The forehead rest must be wiped with disinfectant ethanol for each patient to prevent the risk of infection; no other disinfectant should be used as it may corrode the forehead rest. The chin rest paper should be replaced for each patient, and if chin rest paper is not being used, the chin rest itself must be disinfected in the same manner as the forehead rest. (Page 42)
What does it mean when Err 06 or Err 70 appears on the observation monitor?
Err 06 indicates that sensor cleaning is not possible, and Err 70 indicates that photography is not possible due to an error. Both errors indicate a malfunction detected in the digital camera; you should turn off the power to the retinal camera and then turn it on again. (Page 45)
What is the focus adjustment range of the CR-2 AF, and what options are available for patients outside that range?
Without a compensation lens, the focus adjustment range is –10 to +15 D. For patients outside this range, diopter compensation photography can be used: the negative compensation lens covers –31 to –7 D, and the positive compensation lens covers +11 to +33 D. Note that AF and AS functions are not available in diopter compensation mode. (Page 47)
How do I prepare the CR-2 AF for long-term storage or when it will not be used for an extended period?
Turn off the power to all devices, cover the objective lens with the objective lens cap, and place the dust cover over the CR-2 AF. The power plug should also be unplugged from the AC outlet, as leaving the device plugged in for a long time in a dusty or humid environment may cause insulation failure and result in a fire. (Pages 10, 13)
Hi! I'm your AI assistant for the Canon CR-2 AF Camera. Ask me anything about setup, troubleshooting, maintenance, or features — I'll answer using the official manual.
Suggestions
AI answers may contain errors. Verify with the original manual for safety-critical questions.