NCR 74 OFX (7874), User Manual

Page: 261 / 268

Appendix B: Additional Diagnostic Functions B-3
4. Scan the Diagnostic Mode tag to enter the Base Diagnostic state – must be the first
tag scanned after applying power to the RealScan 74.
5. Scan the Hex 2 tag to start the RS232 Turnaround test.
•
Test Passes – a Good Read tone is emitted, the scanner will speak “RS232
Passed”, and “232 232” will appear on the remote display
•
Test Fails – the scanner will speak “RS232 Failed”
6. Repeat steps 4 and 5 to repeat the test.
7. Remove power from the RealScan 74.
8. Disconnect the turnaround plug.
•
Connect interface cable to connector where you removed the turnaround plug.
•
Set the RealScan 74 into the hole in the checkstand and install the Top Plate.
9. Supply power the RealScan 74.
Possible Bad Component
•
Optics Engine\Digital Board Assembly
Toad Test
The Toad test checks the scanner ʹ s ability to read UPC bar codes in various parts of
the scan pattern. The test repeats until ended by removing power from the RealScan
74.
1. Scan the Diagnostic Mode tag to enter the Base Diagnostic state—must be the first
tag scanned after applying power to the RealScan 74.
2. Scan the Hex 1 tag to enter the Toad test mode.
3. Position a good UPC or EAN tag within the scan pattern.
a. The green status Indicator displays and the Good Read tone sounds if the
scanner can read the bar code.
b. The red status Indicator displays if the scanner cannot read the bar code.
4. Repeat Step 3 for various areas of the scan pattern.
5. Remove power from the RealScan 74 to end this test.
Possible Bad Components
•
Optics Engine\Digital Board Assembly