Technical data
- 12 - 
Possible problem areas and solutions 
5. Possible problem areas and their solutions 
Problem Reason  Solution 
The enrolment of a finger is not 
successful 
The finger has not been drawn 
consistently starting from the 
finger joint over the senor. 
The finger has been drawn too soft 
or too strongly over the sensor. 
The finger has been drawn too fast 
or too slowly over the sensor. 
Draw the finger consistently over the 
sensor. 
Draw the finger gently, but not too softly 
over the finger. 
Draw the finger with moderate speed over 
the sensor. 
An already enrolled finger cannot 
be found 
During enrolment another area of 
the finger was scanned. 
The enrolment has not been 
carried out correctly 
The finger has to be enrolled again by 
drawing it consistently over the sensor. 
See “Enrolment of a finger is not working” 
– perfect enrolment ensures high 
identification efficiency. 
Status point of the inside unit is 
not flashing 
Break down of the system 
Turn off the device for approx. 20 sec. 
E0  No connection to the outside unit 
Check the „4-line” connection wire. 
E1  Already 99 fingers enrolled  It is not possible to enrol more fingers. If 
necessary erase fingers in order to enrol 
new ones. 
E2  30min locking after 3 times 
entering the wrong security code 
Wait for 30 min., in order to key in the 
security code anew. 
E3  Wrong unit coupling. The green 
LED on the outside unit is 
signalling a positive identification, 
which is not accepted, because one 
of the devices has been changed. 
After exchange of the outside or inside 
unit a reset to the initial settings has to 
be carried out. 










