Salter Brecknell 6712 - Manual (Page 11)

Model 6712 Point-of-Sale Interface Scale User’s Manual 11
Input/Output (I-O) – To test the data I/O port,
install a loopback connector and press the test
button. The message PASS or FAIL is displayed.
This test requires a jumper (short) between
transmit and receive data lines.
Internal Counts (A/D) – Displays A/D data
internal counts (factory use only).
Follow these steps to access the tests in the
DIAG menu. Refer to Figure 2.
1. Press SW-1…
Display shows DIAG.
2. Press the TEST key. . .
DISP is displayed.
3. Press the TEST key to perform the display
test described earlier…
Display test is performed and shows
DISP after the test is completed.
4. Press the ZERO key to scroll to the I/O test...
I-O is displayed. This stands for the
Input/Output test.
5. With a loopback connector in place, press
the TEST key to perform the I/O test . . .
PASS or FAIL is displayed. If the test
fails, the unit may have a serial interface
failure.
6. Press the ZERO key to scroll to the internal
count test . . .
A/D is displayed. Tests A/D count data.
Step-by-Step Instructions
for Diag Mode
Return to normal
operating mode by
pressing the SW-1
switch.
Press the ZERO key
to scroll through the
lists of selections.
Press the TEST Key to
make a selection.
If you want to skip a
test, press the ZERO
key to scroll to the
next test.
If you press the ZERO
key to advance the
display message to
DONE, you can press
TEST to return to the
DIAG menu.
If you encounter any
failure in these tests,
contact technical
support.