Toshiba SureMark 4610 2CR, Hardware Manual

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M
Figure 27. Cleaning the MICR read head
4. Prepare a swab with isopropyl alcohol.
5. Gently wipe the head (see
M
in Figure 27) with the swab several times. Wipe away any
residual alcohol with a dry swab.
6. Replace the ribbon and close the ribbon door.
If cleaning the MICR read head does not solve the problem you are having, you might be
experiencing electromagnetic noise interference. Sources of electromagnetic noise (for example,
displays, security towers, and other sources) can interfere with the MICR read head. The printer
is equipped to filter noise from many devices. If the MICR read head does not function properly,
rearranging the printer relative to the noise source might improve MICR reading. The noise
source should be as far away as possible from the right side of the printer.
Cleaning the thermal printhead
The thermal printhead should be cleaned at regular intervals or when the print quality has
noticeably deteriorated. There are many factors that affect cleaning frequency. Poor paper
quality, high printer usage, or a dirty environment are all reasons to clean the thermal printhead
more often. Complete the following steps to clean the thermal printhead:
1. Open the paper cover by pushing the large blue button on the top of the printer.
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4610 Hardware Guide for Models 2CR and 2NR