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9. TROUBLESHOOTING
If the WGA-910A does not function as expected or is found unstable, do not immediately take it that the WGA-910A
has failed, but check the operating environment for possible causes.
This section describes causes of every phenomenon and checking methods.
If all this fails to recover normal operation, contact KYOWA or our representatives.
KYOWA may deny repairs when the WGA-910A has been damaged through improper usage (i.e. not confirming to
guidelines described in this manual), or when the WGA-910A has been disassembled or modified by the user.
For troubles and countermeasures relating to the optional units, see WGA-910A INSTRUCTION MANUAL (FOR
OPTIONS).
9-1. POWER SWITCH CANNOT TURN ON THE WGA-910A
The power cable may be faulty or fuse may be melted when the “POWER” LED does not light up even if the turning
ON the WGA-910A or when nothing is displayed on the LCD.
First, check to be sure that the power cable is not broken.
Contact KYOWA or our representatives if a fuse may be melted.
9-2. DISPLAYING ERRORS
Check the followings if the errors are displayed.
1) No-load Zero
Displaying
Content:
Stops the no-load zero.
Cause:
Transducer input is exceeding ±3.2 mV/V during conducting the no-load zero.
In addition, the Transducer may be faulty, cable may be disconnected or may be
incorrectly connected.
How to Check:
Check that the Transducer is in no-load state or receiving an excessive load.
After that, conduct the channel check.
2) Sens. Registering
Displaying
Content:
Stops the sensitivity registering.
Cause:
The setting value of the rated output and rated display may out of the specification range
or may not set ±10000 per 0.1 mV/V or less.
In addition, the actual load calibration may be conducted with the nearly same load of the
no-load zero.
How to Check:
Check the setting value of the sensitivity registering calibration or actual load calibration
again.
3) Indicated Value + Over/Indicated Value - Over
Displaying
Content:
The displaying value is higher than +99999.
The displaying value is lower than -99999.
Cause:
The setting value of the rated display to the rated output of the sensitivity registering
calibration (actual load calibration) may excessively large.
How to Check:
Check the setting value of the sensitivity registering calibration (actual load calibration)
again.
Check the setting value of the rated display again.
In addition, conduct the channel check.
4) Input Value + Over/Input Value - Over
Displaying
Content:
The input is higher than +3.2 mV/V.
The input is lower than -3.2 mV/V.
Cause:
The rated output of the transducer (including zero point float) may exceeds ±3.2 mV/V.
In addition, the transducer may be faulty, cable may be disconnected or may be incorrectly
connected.
How to Check:
Conduct the channel check.
