OHAUS T72XW AM, Instruction Manual

Page: 101 / 143

7000 SERIES INDICATORS EN 93
5.3.2 If no changing digits can be seen, proceed to the Power Test.Power Test
On T72XW indicators, if the display is blank or if intermittent problems are occurring, the condition of the AC power
source should be checked. Use a multi-meter to check that the AC input power is within

15% to

10% of the
standard 100
–240 VAC voltage range.
Begin by checking the AC power at the source. If no AC power is present, have a qualified electrician at the site
restore power at the source. After power is restored, test the T72XW for correct operation.
5.3.3 Problem Diagnosis
The following chart lists a few potential symptoms and some suggestions for resolving the issue. Use qualified
electricians to test for problems with the AC power source. If a problem that is not listed in Table 5-1 occurs, or if
the suggested fix does not resolve the problem, contact an authorized OHAUS CORPORATION service
representative for assistance.
Table 5-1: Symptoms and Suggested Fixes
Symptom Suggestion
Display is blank
Check backlight and contrast settings.
Confirm source of AC power is OK
Contact service representative.
Display on but weight
does not change
Check wiring to load cell.
Look for broken wires, open connections or mis-wiring.
Contact service representative.
No serial port
communications
Use serial diagnostics section of Maintenance block of
setup to determine if the problem is internal or external
to the indicator.
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 indicator.
Contact service representative.
5.3.4 Error Codes and Error Messages
The T72XW indicator uses a combination of error codes and error messages to indicate error conditions that occur
in the indicator. A list of possible error codes is given in Table 5-2.
Table 5-2: Error Code List
Error
Code
Description
Err 0001 An approval region has been enabled and the W&M switch is off
Err 0002 This setup parameter cannot be changed while indicator is approved
Err 0003 Increment size will be reset due to scale capacity change
Err 0004 In multiple range mode, programmed capacity for range 2 must be
greater than the programmed capacity for range 1
Err 0005 Capacity value exceeds limit
Err 0006 Calibration weight exceeds range
Err 0007 GEO value exceeds limit
Err 0008 Illegal capacity value
Err 0009 In multiple range mode, range 2 increment / range 1 increment must be
< 50
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