Correcting Malfunctions - Covidien Valleylab LS10 Service Manual

Correcting Malfunctions

System Functions
Logs
The logs list the activities on the generator such as activation counts, instrument
insertion, and other events.
Service Mode
Service mode functionality requires an external PC and terminal emulation program.
When the system is in service mode, the system status indicator will illuminate white and
flash. Cycle power to exit service mode.
Correcting Malfunctions
If a solution is not readily apparent, use the table below to help identify and correct
specific malfunctions. After the malfunction is corrected, power cycle the generator,
confirm the self-test completes, and returns to ready state.
Situation
Abnormal neuromuscu-
lar stimulation (stop sur-
gery immediately)
Generator does not re-
spond when turned on
5-4
Possible Cause
Metal-to-metal sparking
Abnormal 50 Hz-60 Hz
leakage currents
Disconnected power cord
or faulty wall outlet
Faulty power cord
Fuse drawer is open or fus-
es are blown.
Internal component mal-
function
Valleylab LS10, LS Series Single Channel Vessel Sealing Generator Service Manual
Solution
Check all connections to
the generator and LigaSure
instrument and cords for
damage.
Contact your biomedical-
engineering department or
a Covidien Technical Service
representative for assis-
tance.
Check power cord connec-
tions (generator and wall
outlet). Connect the power
cord to a functional outlet.
Replace the power cord.
Replace the blown fuse(s).
Close the fuse drawer. Re-
fer to the service manual.
Use a backup generator.
Contact the biomedical-en-
gineering department or a
Covidien Technical Service
representative for assis-
tance.