KaVo K4 - Page 11

K4 Table top controller 4954
9
C• Motor speed too high for longer than
2 sec, possibly one phase of the motor is
interrupted or motor electronics are faulty
R• Repair fault
C• Speed preselection potentiometer dis-
connection (open circuit)
R• Repair fault
C• No foot switch connected (possibly open
circuit)
R• Connect foot switch and check function
C• Foot switch at start when mains switched
on
R• Release foot switch (stop)
C• Short-circuit in direct-current chopper
(transistor)
R• Repair motor electronics
C• Direct-current chopper or measuring
device U_wr, I_wr faulty
R• Repair motor electronics
C• Inverter faulty (automatic test on swit-
ching on)
R• Repair motor electronics
C• Brake device faulty (automatic test on
switching on)
R• Repair motor electronics
C• Warning - Data loss in EEPROM memory
R• Start motor, if necessary send to EWL
for checking and recalibration
C• Program memory (ROM) faulty (auto-
matic test on switching on)
R• Send to EWL for checking and soldering
in new processor
F = Fault C = Cause R = Rectification
F• flash 20 times
F• flash 19 times
F• flash 16 times
F• flash 15 times
F• flash 14 times
F• flash 13 times
F• flash 12 times
F• flash 11 times
F• flash 9 times
F• flash 6 times
GB
OPERATING INSTRUCTIONS
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