ECOTEST DKG-21 Operating Manual page 34

Table 4.1 - Possible troubles and troubleshooting
Trouble
1 The dosimeter does
not switch on after the
MODE button is
pressed
2 "Err" symbol is
displayed on the dLCD
after the battery has
been replaced
Probable cause
1 Storage battery is low
2 Poor contact between the
storage battery and the
battery compartment
clamps
3. Storage battery failure
Failure of the nonvolatile
memory of the dosimeter
32
Solution
1 Charge the storage
battery
2 Restore the contact
between the storage
battery and the
clamps
3 Replace the
storage battery
Send the dosimeter
for repair to the
manufacturer