ConMed ExcaliburPLUS PC - Maintenance; Routine Maintenance Procedures

4.1 GENERAL MAINTENANCE
INFORMATION
This section contains information useful in the
maintenance and repair of the Excalibur Plus
PC". While the unit has been designed and
manufactured to high industry standards, it is rec-
ommended that periodic inspection and perfor-
mance testing be performed to ensure continual
safe and effective operation.
Ease of maintenance was a primary consideration
in the design of the Excalibur Plus PC™.
Maintenance features of this unit include micro-
processor aided troubleshooting aids and push
button calibration, built in fault detection, circuit
protection, easy access to circuitry while the unit
is operational, and fused, screwdriver replaceable
power transistors. These features coupled with
the warranty, local support, loaner equipment,
factory support, toll free phone service to the fac-
tory and available factory training ensure the user
of a minimal maintenance effort with extensive
support available.
4.2 ASSEMBLY BREAKDOWN & PARTS
ACCESS
>WARNING<
HAZARDOUS VOLTAGES ARE PRESENT
ON INTERNAL COMPONENTS. BE
SURE THAT THE UNIT IS TURNED OFF
AND THE POWER PLUG IS DISCON-
NECTED BEFORE DISASSEMBLY.
The Excalibur Plus PC™ opens into a Base
Assembly and a Top Cover Assembly. To gain
access to the internal parts remove the two
Phillips head screws on the Rear Panel. Refer to
Figure 4.1. Slide the Top Cover forward and lift
its front edge. The Top Cover can be held open
vertically by sliding the Rear Support Bracket
Slots onto the top edge of the Rear Panel Base
Assembly. See Figure 4.2. To close the Top
Cover, lift it upward until the Support Bracket
Maintenance
Section 4.0
Slots are free and then lower it onto the Base
Assembly. Reengage the Front Closure Pins into
the Base Assembly slots before replacing the rear
screws.
>WARNING<
HAZARDOUS VOLTAGES ARE PRESENT
ON ALL BASE SUBASSEMBLIES WHEN
THE UNIT IS OPERATING.
NOTE: The Excalibur Plus PC™ may be operat-
ed with the Top Cover open and the RF Shield
removed for test purposes. Avoid drawing arcs
with the RF Shield removed. Failure to replace
the RF Shield when returning the unit to service
may cause erratic operation and/or cause error
codes to occur.
4.2.1 Display PWB A2
To gain access to the Display Assembly A2,
remove the nine nuts attaching the RF Shield to
the Top Cover. See Fig. 4.2. Access to the com-
ponent side of the A2 Display Assembly is gained
by removing the five screws. See Fig. 4.3. Verify
cable connections when reinstalling the Display
PWB. When replacing the RF Shield take care
not to pinch any of the cables.
CAUTION: Many of the components on the
A2 and A3 assemblies are static sensitive.
Take appropriate precautions when servicing
these boards.
4.2.2 Controller Assembly A3
To gain access to the Controller PWB A3, remove
the RF Shield. See Fig. 4.2. Access to the cir-
cuit side of the A3 Controller Board is gained by
removal of the six fasteners and eight cable con-
nections. Verify cable connections when rein-
stalling this board. Take care not to pinch any of
the cables when replacing the RF Shield.