NCR 7156, Owner'S Manual

Page: 40 / 138

Chapter 4: Diagnostics 7156 Owner’s Guide
September 1997 34
Level 1 Diagnostics
Level 1 diagnostics (setup mode) allow you to change the settings for various printer
functions and to run certain tests using the DIP switches.
Keep the following information in mind when changing the settings:
•
The settings can only be changed when the printer is in level 1 diagnostics (setup
mode): Switch 1 must be set to On. “Verifying Read of MICR Characters” is an
exception as it is run in on-line mode (switch 1 set to Off).
•
After the switches have been changed, press the on-line button (or plunger) and wait
for the green LED to flash. This does not always apply. See the section for each
function and test for specific instructions.
•
The default options are set at the factory and are stored in the history EEROM.
•
Once the settings have been changed and stored in the EEROM, the DIP switches must
be set back to the on-line settings for the printer to operate.
•
The stored settings for the functions are printed with a dump of all resident characters
during a print test. See “Print Test” later in this chapter.
Caution: If you are changing the switch settings, be sure they are the correct settings for
that particular function or test to avoid accidentally changing the settings for another
function or test. If the settings are accidentally changed, use the switch settings shown in
the tables throughout this section to change those settings back. If you need assistance,
contact a service representative. See “Contacting a Service Representative” in chapter 3.
The functions and tests are described in the following order in this section:
•
Setting Printhead Resistance
•
Setting Partial Cut Distance
•
Setting Data Error and Data Buffer Options
•
Ignoring/Using the Carriage Return
•
Checking and Adjusting the MICR Check Reader
•
Verifying Read of MICR Characters
•
Running the Data Scope Mode
•
Testing the Slip and Receipt Stations