22
Trouble Shooting Chart:
Problem Reason
Solution
Display does not switch on
The battery is discharged
Charge or replace
The battery is not installed correctly
Reinstall, observe the indicated polarity
Readings on the display do not change
There is no contact in the connector of the transducer with
the electronic module
Check the connection reliability
Break in the connecting cable or connector; fault of the
transducer of electronic module
Contact the service center
Measurement results are stable but differ
from reference hardness block nominal
value
The spring of the transducer has been worn out after long
life
Calibrate the hardness tester independently on the
reference hardness blocks
Big range of the measurement results
The tested material is not uniform in its structure
Increase the number of measurements
to obtain average
Tested area has not been prepared properly
Smooth out surface finish
The diamond pyramid or carbide ball are dirty
Clean using rubbing alcohol
The diamond pyramid tip or hardmetal ball are damaged
Contact the service center
D1 Dynamic Transducer
The impact device is not making proper contact or
alignment with the surface
The hardness reference block surface is covered by the
imprints from the previous measurements
Conduct the repeated test correctly
Use a new reference hardness block
U1 Ultrasonic Transducer
The packing on the transducer body is displaced
Contact the service center
D1 Dynamic Transducer
Much higher readings than actual value
of test block
Carbide ball deformation
Contact the service center for replacement balls
Higher readings when hardness of
cylinder shaped articles with surface
hardening is measured
Influence of the articles surface tensions
Use U1 ultrasonic transducer