EFA-200/-300 3 Preparation for use
3-7
Possible malfunctions
The instrument does not operate.
The batteries are completely discharged.
⇒ Recharge the rechargeable batteries or replace the dry cells.
Charging the rechargeable batteries: see page 3-3
Replacing the rechargeable batteries / dry cells: see page 10-1
– or –
A fatal error has occurred.
⇒ Perform a reset, possibly also recall basic settings.
Basic Unit keyboard: see page 4-1
Display remains blank after switching on.
Display contrast is set too high / too low.
⇒ Check the display contrast setting.
Contrast: see page 4-5
The default setting always appears after switching on.
The lithium battery is exhausted.
⇒ Contact the Service Center.
Lithium battery: see page 10-3
Two beeps are heard close together.
The self test detected missing data in the device configuration.
⇒ The instrument will be reset to the default setting automatically.
Measurements can be started.
Three beeps are heard close together and the error message “ERROR
DETECTED” appears in the display.
The function test cannot be completed because of an internal fault in the
instrument.
⇒ Contact the Service Center.
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