Nellcor N-180 Service Manual page 63

Section 6: Disassembly Guide
Battery Fuse
The battery fuse is in a fuse holder that is soldered to the CPU PCB. Once
you remove the top shield you can see the fuse beneath the connector that
routes between the CPU PCB and the oximetry module. To replace the fuse:
1
3.
Disconnect the battery wire connector that connects to CN4 on the CPU
PCB. -
Disconnect the ribbon cable between the CPU PCB and the oximetry
module.
Use a small flat blade screwdriver to gently pry the fuse from the holder.
Middle Shield and Oximetry Module
You have to remove the middle shield to gain access to components in the
bottom shield assembly, Here is how to remove the middle shield and
* oximetry module (figure 6-6).
1.
Gain access to the middle shield by following the instructions in this
section for gaining access to components; remove the battery and top
shield.
Disconnect sensor connector cable from connector JP1 of oximetry
module (not illustrated in figure).
Remove two screws and washers that hold middle shield assembly onto
bottom shield standoffs.
Rotate middle shield assembly to gain some clearance and disconnect
ribbon cable from oximetry module JP5. ©
. Lift oximetry module and middle shield assembly free.
To completely remove oximetry medule, remove three screws holding
oximetry module to the middle shield.
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