Correcting Malfunctions
7-8 LigaSure Vessel Sealing Generator Service Manual
Generator is on and
accessory is activated,
but generator does not
deliver output.
Malfunctioning footswitching
or handswitching instrument
Turn off the generator. Check and correct all accessory
connections.
Turn on the generator. Replace the accessory if it
continues to malfunction.
Footswitch connected to
wrong receptacle
Move the footswitch connector to the correct receptacle
(check the color code).
Handset connected to wrong
receptacle
Move the handset connector to the correct receptacle.
Power set too low Increase the power setting.
An alarm condition exists Check the display for an alarm number. Note the number
and refer to Responding to System Alarms in this chapter.
Blown fuse on power supply Check the high voltage power supply fuse (F1) and
replace if necessary. For instructions, refer to Chapter 8,
Fuses.
Control board malfunction If the system does not illuminate the activation indicator
and the tone does not sound, replace the control board.
For instructions, refer to Chapter 8, Control Board and
Battery.
RF output stage malfunction
(high voltage is present during
activation)
Troubleshoot the RF output stage as described below:
On the RF board, verify T_ON\ pulses at TP12 during
activation.
If pulses are not present at U24, pin 1, replace the control
board. For instructions, refer to Chapter 8, Control Board
and Battery.
Check the power MOSFET at TP11 for failure (typically
fail shorted).
Check all output relays to verify that they toggle during
operation. If they do not, check the relay driver (U12).
Check for shorting of the output tuning inductors (L1 and
L2).
Check the single fault inhibit logic at U20, pin 4 (active
low) for correct RF operation.
Generator does not detect
vessel sealing instrument,
bipolar instrument, or Smart
Connector Adapter
Firmly insert the Smart Connector into the appropriate
receptacle on the generator front panel. Ensure the
vessel sealing receptacle indicator light changes from red
to green.
Situation Possible Cause Recommended Action
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
