Specifications

NCR RealScan 7883 Installation and Owner Guide
497-0424789 Release H 02/05
33 of 76
Correcting Scanner Problems
When the RealScan 7883 is first turned on, several diagnostic tests are run to check the status of various components. If a
failure occurs, a series of beeps and flashes of the Green Status Indicator identify it. The number of beeps (flashes)
identifies the problem. The problem indication is repeated continuously with a 3-second pause between each indication
series. Following the first problem indication, the beeps are turned off and only the Green Status Indicator flashes to
identify the problem.
If the diagnostics identify a problem, you must have the scanner repaired. Refer to Obtaining Technical Assistance on
page 3. Although several conditions can be identified, following are the most common.
Green
Status
Indicator
Tones
Problem
Suspect Component
2 Flashes 2 Beeps RAM – Write / Read failure Printed Circuit Board
3 Flashes 3 Beeps Spinner motor running when it
should be off
Printed Circuit Board
4 Flashes 4 Beeps Interface Failure Code received Printed Circuit Board
5 Flashes 5 Beeps Motor running too slow
• Motor
• Printed Circuit Board
6 Flashes 6 Beeps EEPROM failure – cannot load
contents into memory
Printed Circuit Board
7 Flashes 7 Beeps No +12 Vdc or –12 Vdc Power Supply
8 Flashes 8 Beeps Laser Diode On when it should
be Off
Printed Circuit Board
9 Flashes No Beeps Scanner does not see Terminal
power
Terminal powered off or
cable not connected.
11 Flashes 11 Beeps Laser Diode Off when it should
be On
Printed Circuit Board
12 Flashes 12 Beeps ROM sum check failure Printed Circuit Board