NCR 7156, Руководство по эксплуатации и устранению неисправностей

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6 Chapter 2: Troubleshooting
Check the following to determine the cause of the problem.
Printer Hookup
Before document feeding is enabled the printer control program checks
for the following:
•
Internal harness connected to their associated headers
•
All covers closed
•
Receipt paper loaded
Confirm proper harness hookup, cover closures, and loaded paper.
Damaged Document
Inspect the document. There must be no holes or notches along the 1”
margin on the MICR side of the document. A notch or hole that passes
over a sensor could be misinterpreted as the end of the document.
Obscured or Faulty Slip-In Sensor
If the printer is in diagnostic mode, reconfigure the DIP switches for
normal operation; remember to reset the printer to enable the new
switch settings.
To test the slip-in sensors, do the following:
•
With the printer turned on, check the green indicator LED on the
front of the printer. This light should be off when no slip is
inserted.
•
Insert a slip, lining it up with the slip guide wall and sliding it all
the way to the slip stop (behind the feed rollers). When the slip is
correctly and completely inserted, the green indicator LED should
be on.
If the indicator LED responds correctly, continue testing the slip-in
sensors:
•
Pull the slip straight back about 1/4 inch: the indicator LED should
turn off. (This tests the back LED slip-in sensor.)