Chapter 3: Solving Problems; Printer Beeps Twice; Green Led Does Not Come On/Printer Will Not Print - NCR 7156 Owner's Manual

7156 Owner's Guide

Chapter 3: Solving Problems

The 7156 printer is a simple, generally trouble-free printer, but from time to time minor
problems may occur. For example, the power supply may be interrupted or the thermal
printhead may overheat.
A red LED on the operator panel signals that something may be wrong. The light on the
front right side of the printer is used only to indicate when a form is inserted properly. It
does not indicate an error.
For some problems, the printer communicates the information to the host computer and
relies on the application to indicate what the problem is.
The information on the following pages describes some problems that you may encounter:
problems that you can easily fix, and others that you will need to contact a service
representative for.
You may be able to correct many of the conditions or problems without calling for service.
However, if a problem persists, contact a service representative. See "Contacting a Service
Representative" at the end of this chapter.

Printer Beeps Twice

Problem
Printer Beeps Twice at Power On If printer beeps twice during level 0
If the printer beeps twice at
every power on, the EEROM has
failed

Green LED Does Not Come On/Printer Will Not Print

Problem
Cables may not be connected
properly
Power supply may be defective
What to Do
diagnostics, it indicates that default values
have been loaded into the EEROM. No action
is necessary.
The PC Board needs to be replaced. Contact a
service representative.
What to Do
Check all cable connections. Check that the
host computer and power supply are both on
(the power supply is turned on by plugging it
into an outlet).
If the power supply is plugged in, but does not
come on, you will need to order a new power
supply.
Chapter 3: Solving Problems
Where to Go
See "Contacting a Service
Representative" later in
this chapter.
Where to Go
See "Connecting the
Cables" in chapter 2.
See "Ordering Other
Supplies" in chapter 1.
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