Hardy HI 2151/30WC Single-Scale Controller - Manual (Page 145)

Chapter 8 - Troubleshooting
8-25
System Integrity
Check and Fault
Determination
To determine if an instrument or cabling problem exists, verify the basic operation of the system by per-
forming the following system checks.
Self-Test 1. Self-test can be entered only from the net, gross or rate of change
operating modes.
2. To initiate self-test, press the -/Test/Clr button.
3. Press the Enter button.
4. The name of each test is displayed for about 2 seconds after which
the result is displayed for another 2 seconds. The self-test program
automatically steps through each test and continues through any
failed tests until all are completed.
5. When the self-test program has completed all tests, the instrument
returns to the keyboard test, which can be ended by pressing the 0/
exit button.
6. Speed up the self-test by holding down the UP arrow key. Pause the
self-test display by pressing the down arrow key. To resume the
self-test, press the up
↑ arrow key. To exit the self-test at any time,
press the exit key.
7. Write down the test results and compare them to the System Data
Survey Sheet. Determine if any differences are due to system modi-
fications, and update the Survey Sheet.
8. Following are the sequential tests conducted by the self-test pro-
gram:
DISPLAY TEST FAILURE SOLUTIONS
SLFTEST Indicates beginning of self-test. None
VER X.XX Version of EPROM installed. None
8.8.8.8.8.8 Display Test - All segments and words 1. Main card not seated
on display turned on.
properly in display board.
2. Contamination on
connector pins.
3. LED display not
functioning.
ERREXC Indicates that the measured current is 1. New System Calibration
out of tolerance by ± 10%. has not been completed.
2. Load Cell is faulty.
3. Broken or Open excitation wire.