Axiohm 7156 Spezifikationen Seite 56

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Diagnostics 7156 Owner’s Guide
October 199548
Checking and Adjusting the MICR Reader
The adjustment procedure described in this section cancels or sharply reduces
extraneous signals picked up by the Magnetic Ink Character Recognition (MICR)
Reader.
Note: The MICR Reader feature has been factory adjusted for a normal operating
environment with a host system. However, additional devices, such as CRT
monitors or large metal surfaces near the printer, can affect the printer's magnetic
field, causing intermittent reading errors when the MICR Reader is in operation.
This condition can be easily diagnosed by checking the MICR Reader adjustment
and readjusting it if the factory setting has been altered. Follow the procedures in
this section to check and adjust the MICR Reader.
Check the MICR Reader Adjustment
Caution: Electro Static Discharge may damage the PC board. Wear a grounded
wrist strap and use a static mat or other ESD protected work surface whenever
you work with the PC board.
1. Open the front cover.
2. Press the On Line button to take the printer off-line.
Caution: The DIP switches are set at the factory to predetermined settings and
should generally not be changed. If you must change the settings do so carefully
to avoid changing other functions.
3. Set the DIP switches to the settings in the table.
See the illustration on the next page for the location of the DIP switches.
Switch 8: On = knife, Off = non-knife
Switch 1 Switch 2 Switch 3 Switch 4 Switch 5 Switch 6 Switch 7
On Off Off Off Off Off On
4. Close the front cover.
5. Press the On Line button to put the printer back on-line.
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