7526 DCT Reference

Diagnostics

A series of tests can be run on the 7526 DCT by selecting DIAGNOSTICS while in the Setup Mode.

In the diagnostic mode, pressing any key other than Enter advances through the following menu:

If the optional bar code coprocessor is not installed, bar code and magnetic reading tests can be run on both Ports A and B.

If the optional bar code coprocessor is installed, Port A is dedicated to the coprocessor (bar code reading only).

Diagnostic Interface

The diagnostics are in addition to the power-on self test diagnostics (POST) run automatically during initial power-on or cold reset. The diagnostics are accessible from the setup menu (Shift and keylock keys). See "Setup Mode".

When DIAGNOSTICS is selected, pressing any key, other than the Enter key, scrolls through the diagnostic tests. When the desired test is displayed, pressing the Enter key starts the test.

Note:

See the Maintenance Information manual for complete details about using diagnostics.

The following is a list of the diagnostic test and meaning:

Test
Meaning
DISPLAY COUNTERS
View or clear diagnostic event counters
TEST DISPLAY
Test the display
TEST KEYPAD
Test the keypad
TEST MAG READING
Test a magnetic badge reader attached to either port
TEST BAR READING
Test reading of bar code data on either port
TEST COMM
Monitor or test the RS-422 communications port
TEST CLOCK CHIP
Test the internal calendar/clock chip
TEST DIGITAL I/O
Test the digital input/output circuitry
TEST PRINTER
Test the printer port connection
TEST MEMORY
Test the RAM
EXIT DIAGNOSTICS
Show total RAM installed, then display terminal address selected

Field Replaceable Units

Refer to the Maintenance Information manual for problem isolation and removal/replacement procedures, and parts catalog.

The following items are Field Replaceable Units (FRUs) and are available as FRU part numbers.