APPENDIX
HYFRECATOR TROUBLESHOOTING GUIDELINE
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
Unit not plugged in.
Plug in to 110vac grounded
1. The unit will not energize.
outlet.
Fuse F1 or F2 open.
Replace.
2. Power on light does not
DS1 is open.
Replace.
energize.
Open lead to buzzer.
Reconnect.
3. Unit coagulates, but the
buzzer does not sound.
Open buzzer.
Replace.
4. Unit will not coagulate,
buzzer and active (yellow)
Bad hand piece.
Replace.
light operate.
5. Unit coagulates with hand
switch, but not with foot
Bad foot switch.
Replace.
switch.
Use TP1 through TP$ to
isolate faulty area, then
locate and replace faulty
6. Unit will not coagulate, no
component
ACTIVE (yellow) light or
Bad printed circuit board or
buzzer with either foot switch
component.
OR
or hand switch.
Replace printed circuit
board.
End of Appendix
MD0363
A-1