NCR 7156, Service Manual

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7156 Service Guide Chapter 2: Setting Up the Printer
September 1998 11
Setting DIP Switches
The DIP switches, located behind the front cover, are used for three purposes:
•
To set communication parameters for the RS-232C communication interface (see
Appendix B for the switch settings)
Or
to set address bits for the LCSIO (RS-485) communication interface (see Appendix B for
the switch settings)
•
To set variables for several printer functions (see the sections for the various printer
functions in “Level 1 Diagnostics” in “Chapter 3: Diagnostics” for the switch settings)
•
To perform diagnostic tests (see the sections for the various diagnostic tests in “Level 1
Diagnostics” in “Chapter 3: Diagnostics” for the switch settings)
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.
Before changing any of the switches, first run the print test to print out the current switch
settings on the receipt. See “Testing the Printer” at the end of this chapter for instructions
on running the print test and for a sample printout.
Front of Printer
Reset
Button
Front Cover
Off
Switch 1 is shown
in the OFF position
On
DIP Switch
Note: Switch 1 is shown in the off position for reference.
Note: Some 7156 models may appear slightly different from what is shown in the
illustration. The procedures are the same for all models unless otherwise noted.