Chapter 8: Troubleshooting

This chapter discusses the troubleshooting a user may perform to diagnose problems which may occur during use of the NCR 7870. For more comprehensive repair and service information, refer to the NCR 7870 Scanner/Scale Repair Guide (D2-0966-A).

Fault Identification

The NCR 7870 Scanner/Scale performs internal diagnostic checks upon various functions during operation and the power-up sequence.

Scanner operational problems are signaled by

a series of tones,

Voice Messages (if available), and

Status Indicator light flashing.

Scale operational problems are signaled by an error code displayed on the NCR 7825 Remote Display or the integrated display. Like the scanner, the scale unit performs diagnostic checks during the power-up sequence and while in operation.

Troubleshooting consists of troubleshooting charts that are designed for locating and correcting certain problems without the aid of a trained technician. If the problem cannot be corrected by using these charts, a trained technician can then use the on-board diagnostics to help identify a faulty component.

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NCR 7870 manual Troubleshooting, Fault Identification