CHAPTER 2 TROUBLESHOOTING
7000 Series T72XW Indicators Service Manual
2-7
Ohaus Corporation www.ohaus.com
Symptom
Suggestion
No serial port
communications
Use serial diagnostics section of Maintenance
block of setup to determine if the problem is
internal or external to the terminal.
Contact service representative.
Discrete inputs or
outputs don’t
operate
Use the discrete input and output diagnostics
section of the Maintenance block of setup or the
DIO status display on the system line to determine
if the problem is internal or external to the terminal.
Contact service representative.
2.5 Internal Diagnostics
The T72XW terminal provides several internal diagnostic tools that are accessible in setup
mode.These tests are intended to assist in diagnosing whether a problem is internal or external
to the terminal.
To access these tools, enter the Operator menu then the
SETUP
mode and navigate to the
Maintenance menu. Open the Maintenance block then the Diagnostic block.
Each of the diagnostic items is shown in the menu.
The following diagnostic tests are included:
2.5.1 Display Test
When the display test is run, the terminal will display all dots on for approximately 4 seconds
then all dots off for another 4 seconds. This cycle will repeat continuously until the
LEFT
navigation key is pressed to exit.
Note: All dots are also illuminated on the display during the power up sequence.
Содержание 7000 Series
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