ICEL MD-6520 Instruction Manual page 91

5. The meter will do self-test to check whether inside battery is rechargeable
or not. The self-test will take 2~3 minutes, no pushbuttons can be operated
in this period. If something wrong, the error message will be indicated as
following:
Three
segments
displayed
cycling to
present the
battery is
under
charged and
testing.
Error Condition
OL
1. No battery inside
2. Failed battery
3. Battery is full
C-Err
1. Non rechargeable
battery inside
2. Failed battery
If such error message occurred, check whether the battery is specified
one. We have done best recognition as possible as we can to prevent
wrong battery to be charged. Maybe some batteries from different
manufactures have bad quality. Please make sure the battery is specified
rechargeable battery before starting charge function again. Once the
specified rechargeable battery has been used, press "
self test again. If the C-Err still occurred, replace with a new battery.
87
Figure- 58 Self-test
Figure- 59 Error message
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Secondary Display
" button to do