ConMed ExcaliburPLUS PC - Troubleshooting; Understanding Fault Codes

Use the Coag Power Increase or Decrease keys to
select the other calibration point, connect the new
indicated resistance, pause and press Alarm Set
Point key.
If an error tone is sounded when the Alarm Set
Point key is pressed, then the calibration point is
out of range, and both points will be declared
uncalibrated. Check to insure that the resistance
has the value as displayed in the Coag window
and that it is well connected to the Return
Electrode. Then repeat calibration of both values.
Calibration was successful if the ASSIST
Resistance Indicator is lit steadily for both points.
Pressing the “STORE” key will restore the menu
immediately and save the new values.
If calibration is incomplete or unsuccessful, press-
ing the “STORE?” key will yield an Incomplete
Cal error code, Err 10.9. Pressing the “STORE”
key again will return the menu, and the PAd dis-
play will be flashing. If calibration was inadver-
tently incomplete, then the A.R.M. calibration
mode may be reentered to correct the situation.
If a circuit fault is suspect, Diagnostics 2 should
be entered for troubleshooting. Complete recali-
bration will be required after the circuit fault is
corrected,
4.7 TROUBLESHOOTING
This section explains the troubleshooting aids
built in to the Excalibur Plus PC™ and provides a
guide to their use. Not all failures can be covered
in a guide such as this, so the troubleshooter
must by necessity understand the full operation of
the unit. Read Section 3 for the description of
system and circuit theory.
>WARNING<
READ THE SAFETY SUMMARY IN SEC-
TION 1.1.4 BEFORE TROUBLESHOOT-
ING THE UNIT.
If trouble is suspected, perform a thorough visual
inspection, looking for loose or burned compo-
nents which may point to the source of the prob-
lem. Verify that all connections are clean and
seated properly and that soldered harness connec-
tors are sound and not shorting. Check power
iburPIUS PCT
cord and all other wiring for evidence of mechan-
ical damage. Check the regulated and unregulat-
ed power supply voltages. Improper supply volt-
ages can produce a multitude of problems. Check
that the RF shield is in place and all mechanical
connections are secure. Check all fuses. Check
the operating instructions and see if the suspected
problem was actually designed to work that way.
4.7.1 Fault Codes
The Excalibur Plus PC™ microprocessor is pro-
grammed with a number of fault detection rou-
tines designed to shut the unit down safely if a
failure has occurred. This shutdown procedure
will produce a fault code that can help with the
trouble shooting process. Refer to Appendix A
for a complete list of the Fault Codes and their
possible causes.
Two types of Fault codes can be generated by the
unit. An “Err” fault code indicates a problem
internal to the machine and generally requires a
technician to fix the problem. Accessory prob-
lems, such as a stuck activation key, footswitch or
control panel key are denoted by “ACC” fault
codes. These codes can generally be cleared by
turning the unit off, ensuring that no switches are
pressed during power up, and turning the unit
on. If this does not clear an ACC code, remove
the accessory indicated and turn the unit on
again. An ACC code not cleared by this will
require repair.
Upon fault detection, the program displays a fault
code in the Monopolar Cut and Coag power level
displays. This loop takes /RFENA low, forces
VBASE and the waveform generator output to
zero drive condition and commands the relays to
open. Further, it ceases generation of Watchdog
Timer strobes and redundantly disables base and
gate drive to the Power Amplifier.
If the Watchdog Timer detects a processor fault, it
will issue an interrupt to the processor, causing a
branch to the same routine as above if the proces-
sor is healthy enough to respond; if not, RF will
still be disabled, but the front panel may not be
capable of displaying the code. Additionally, if
able, the unit will store the fault so it can be read.
later.
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