Internal Assemblies — Front Chassis 4: Repair
143
2 Use tweezers to gently disconnect the Inverter PCA cable ➉.
3 Remove the screws and the chassis:
a Loosen and remove the six T15 screws
➊ – ➏ as shown in Figure 96.
b Loosen the screws
➐ and ➑ and remove them with tweezers or leave them in the Front Chassis’
screw holes.
c Move the wires out of the way.
d Hold the Front Chassis by the metal frame and lift it with the Processor PCA straight up out of
the Front Case.
Replacement
1 Replace the chassis and the screws:
a Move the wires out of the way.
b Place the screws
➐ and ➑ into the screw holes.
c Position the Front Chassis in the Front Case.
Make sure no wires are pinched under the Front Chassis, see Figure 97.
d Reconnect the Inverter PCA cable
➉.
e Start the screws
➐ and ➑.
f Manually start the screws
➊ – ➏.
If you have the EtCO
2
option installed, then do not install screw ➋ yet; you will need it to
replace the CO
2
cable retainer.
g Tighten the M4x10 (T15) screws
➊ – ➑ to 10 inch-lb. (1.1 N m). Use a criss-cross sequence,
e.g.
➊-➍-➐-➌-➑-➋-➎-➏.
2 Reconnect cables
➀ – ➈. See Ta ble 3 5 on page 135 and Figure 96.
3 Ensure the connectors are fully seated.
4 Replace the Printer PCA. See “Printer PCA” on page 124.
5 If present, replace the SpO
2
PCA. See “SpO2 PCA” on page 126.
6 Replace the Rear Chassis. See “Front Chassis and Case Access” on page 134.
7 Close the device. See “Closing the Case” on page 151.
8 Replace the Printer Assembly. See “Printer Assembly” on page 85.
To Complete the Replacement:
Run Performance Verification and Safety testing as described in the “Performance Verification”
chapter.
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