Figure 26: Main Pcb Removal; Figure 27: Main Pcb Removed - Nellcor OxiMax N-550B Service Manual

Disassembly Guide
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8. Remove the front panel assembly from the top case assembly.
9. Disconnect the MP-506 to main PCB cable from the main PCB connector.
See Figure 26 item 1.

Figure 26: Main PCB Removal

10. Disconnect the main PCB to front PCB cable from the main PCB
connector item 2.
11. Remove the three remaining screws holding the main PCB to the top case.
12. Carefully lift the main PCB out of the top case. See Figure 27.

Figure 27: Main PCB Removed