Canon CR-55 사용자 설명서

Regular Maintenance

Magnetic Heads

If the magnetic heads are dirty, MICR characters cannot be scanned correctly.
Periodically clean the magnetic heads with a commercially available audio
head cleaner.

Hook your finger around the open lever and open the maintenance cover.

Clean the magnetic heads with a commercially available audio head cleaner.

The magnetic heads are on the maintenance cover in the location illustrated
below.

Gently close the maintenance cover until it clicks into place.