Service Manual
Page 28 of 50
4.4. Diagnosis
1. Isolate and identify the symptom.
2. Refer to the diagnostic guide and locate the symptom
(Please also refer to the Troubleshooting chapter).
3. Follow the suggested remedies in the order they appear.
4. Perform the indicated checks, or refer to the appropriate section of the manual.
5. Repair or replace the defective section of the scale.
NOTE:
If more than one symptom is observed, approach one area at a time, and remember that the symptoms
may be interrelated.
If a problem arises that is not covered in this manual, contact us for further information.
5. Replacing parts
Before servicing the scale, always unplug the power cord from the scale.
Only qualified service staff may open the scale for service purposes.
Be aware of any static charges and wear a static-proof wrist belt when touching the PCB.
5.1. Service Preparation
Use the below procedures to replace the main board, display, load cell and keyboard.
Important Notice:
Assuming the user is to use the (non-automatic) scales/balance in the legally regulated field, the user will
be responsible for notifying the appropriate calibration authorities of the repaired scales/balance, so that
the latter can take the appropriate measures (calibration/recalibration).
After replacing the main board or parts used in the actual measurement process, the following steps must
be performed:
n
Check & set the local geo code setting (geo code for the region in which the product is to be used)
n
Check calibration reproducibility, linearity, eccentricity
n
Apply local currency/country setting
Preparations before opening the housing (if possible):
n
Note settings (Country, Geo code, Decimal point)
n
Verify installed SW version
The repair of the scale requires common hand tools:
