4: Repair Internal Assemblies — Front Chassis
120
Replacement
1 Replace the Therapy port. See Figure 76.
a Install the washer into the guides inside the Front Case wall next to the Therapy Port opening.
b Install the O-ring onto the Therapy port.
c Slide the Therapy port into its hole in the case. Guide the wires and connectors through the
hole and the washer. Turn the 9-wire connector sideways so it passes through first.
d Guide the wires and connectors the same way through the nut.
e Reconnect the Therapy Port 9-wire bundle to the Processor PCA, see Ta bl e 35 on page 135,
➀.
f Ensure the connector is fully seated.
g Hold the O-ring while engaging the Front Tab into the slot of the Therapy Port opening.
Make sure:
– The O-ring is not visible on either side of the case
– The washer tab is engaged with the Rear Slot of the Therapy port.
– The washer is engaged with the ribs on the Front Case wall.
2 Replace the nut.
a Manually start the nut to avoid cross-threading the metal nut on the plastic connector.
b Tighten the nut against the metal plate with the Therapy Port nut socket at 20 inch-lb.
(2.3 N m).
If the Therapy Port nut socket is not available, then do not use pliers with sharp teeth because if
they slip, they can create small metal shavings trapped inside the box that may affect
performance of your HeartStart XL+.
3 Bring the Rear Chassis into the upright position. See “Pivoting Rear Chassis Downward” on
page 108.
4 Close the case.
See “Closing the Case” on page 151.
To Complete the Replacement:
Run Performance Verification and Safety testing as described in the “Performance Verification”
chapter.
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