Correcting Malfunctions
7-6 LigaSure Vessel Sealing Generator Service Manual
Generator is on, but
did not complete the
self-test.
An alarm condition exists Check the display for an alarm number. Note the number
and refer to Responding to System Alarms in this chapter.
Software malfunction Turn off, then turn on the generator.
Loose or disconnected
internal cables
Check and correct all internal connections.
Faulty low voltage power
supply
Check the low voltage power supply.
Damaged control board
connectors, malfunctioning
control board, or both
Remove the control board and inspect the connectors to
the RF board and to the display board for damage, poor
seating, etc. If the problem persists, replace the control
board. For instructions, refer to Chapter 8, Control Board
and Battery.
Faulty power switch Replace the power switch. For instructions, refer to
Chapter 8, Front Panel and Display Board.
Malfunctioning front panel
components
Replace the front panel assembly. For instructions, refer
to Chapter 8, Front Panel and Display Board.
Shorts or disconnects on HV
power supply
Check the HV power supply for shorts or disconnects.
Shorts or disconnects on RF
board
Check the RF board for shorts or disconnects.
Neither activation tone
nor alarm tone
sounds; speaker is
malfunctioning.
Poor connection or damaged
footswitch board ribbon cable
Check/correct connection. If indicated, replace the
footswitch board.
Faulty connections or speaker
on footswitch board
Replace the footswitch board. For instructions, refer to
Chapter 8, Footswitch Board.
Audio signal malfunction on
control board
Replace the control board. For instructions, refer to
Chapter 8, Control Board and Battery.
Situation Possible Cause Recommended Action
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