4: Repair Internal Assemblies — Rear Chassis
110
Therapy PCA
Removing the Therapy PCA involves disconnecting many cables and removing many screws. Take your
time and be methodical.
CAUTION: Never touch the Therapy PCA surface with your fingers.
Keep the replacement Therapy PCA in the antistatic pouch until ready to install.
Preparation
1 Open the Case. See “Opening the Case” on page 87.
2 Remove the Rear Chassis Shelf. See “Rear Chassis Shelf” on page 93.
3 Position the open HeartStart XL+ display side down, Therapy PCA facing you.
4 Pivot the Rear Chassis downward. See “Pivoting Rear Chassis Downward” on page 108.
Removal
1 Disconnect all remaining Therapy PCA cables,
➅ – ➉, see Tab le 3 4 and Figure 71.
You have already disconnected cables
➀, ➁, ➄ when pivoted the Rear Chassis downward.
a Disconnect cables
➂, ➃, ➅ – ➉.
TIP: Use your fingernails to disconnect the battery data cable
➅. Do not use any tools to avoid
crushing the fragile connector
➅.
b Remove both Fan wires (
➈, ➉) from the Rear Chassis grommet.
c Remove the Therapy PCA AC Power supply wire
➆ from the Rear Chassis opening.
Table 34 Therapy PCA Connections
Ref. # PCA Mark Description Connects To Disconnect By
➀
J10, Apex narrow spade connector, white wire
Therapy Port
extension
Pull, wiggle, use pliers if
needed
➁
J8, Sternum wide spade connector, red wire
➂
J16, White wide spade connector, white wire
Therapy
Capacitor
➃
J15, Red narrow spade connector, red wire
➄
J4 ribbon cable Processor PCA Release latches at the
connector sides, pull
➅
J5 3-wire bundle Battery PCA Gently pull, wiggle
➆
J1 2-wire bundle Power supply
Push on latch to release,
pull, wiggle
➇
J2 4-wire bundle Battery PCA
➈
J12 3-wire bundle
Fans Pull, wiggle
➉
J13 3-wire bundle
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