Verifying Read Of Micr Characters - NCR 7156 Service Manual

Chapter 3: Diagnostics
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Verifying Read of MICR Characters

This test reads the characters on a check and prints a hexadecimal dump of the characters
on the receipt. It is run during normal operation (on-line mode).
Caution: The DIP switches are pre-set at the factory and should generally not be changed.
If you must change them, do so carefully to avoid changing other functions.
Note: The operator panel may differ depending on the model. To put the printer on- or
off-line, use a paper clip or other pointed object to depress the plunger (in place of the On
Line button) on models with that item.
1.
2.
3.
Switch 1 must be set to Off. Switch 8: On = knife, Off = non-knife
Switch 1
Off
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Align the hinges.
Push down gently until the cover snaps into place.
Close the receipt cover.
Open the front cover and set the DIP switches back to the settings for normal operation
(on-line mode).
See "Appendix B: Communication Information" for the switch settings.
On models with the On Line button (or plunger) on top of the printer, press the On
Line button (or plunger) to put the printer off-line.
On models without the On Line button (or plunger), press the reset button (under the
DIP switches) to put the printer off-line.
Set the DIP switches to the settings in the table.
Switch 2 Switch 3
On Off
Close the front cover and press the On Line button (or plunger) on those models.
The green LED flashes when the printer cycles. The settings are entered into EEROM.
Press the reset button on those models.
The green LED flashes when the printer cycles.
Insert a check into the slip station.
The printer waits until a check is inserted and detected before the platen closes and the
characters are read by the MICR check reader. The decoded data is printed to the
receipt, the platen is opened, and the test is re-started.
If the MICR check reader misreads the characters, question marks "?" are printed on
the receipt. If the MICR check reader is unable to read any characters, "NO MICR
CHARACTERS" is printed on the receipt.
Press the On Line button (or plunger) on those models to put the printer off-line.
Press the reset button (under the DIP switches) on those models to put the printer off-
line.
Open the front cover and set the DIP switches back to the settings for normal operation
(on-line mode).
See "Appendix B: Communication Information" for the switch settings.
Switch 4 Switch 5 Switch 6
Off Off Off
September 1998
7156 Service Guide
Switch 7
On