Cpu Pcb Or Display Pcb Replacement; Figure 8: Display Pcb And Cpu Pcb Removal - Nellcor OxiMax NPB-40 Service Manual

Disassembly Guide

CPU PCB or Display PCB Replacement

46
Do the following procedure to replace the CPU PCB or the display PCB.
1. Do the procedure in paragraph Prior to Disassembly on page 43.
2. Do the procedure in paragraph Separating the Front and Back Cases on
page 44.
Caution: The battery connectors (spring assemblies) at the bottom of the
CPU PCB are held in slots in the battery compartment. Observe how these
connectors are engaged in these slots when you remove the CPU PCB and
display PCB and ensure that the battery connectors are inserted back into
these slots when you reassemble the NPB-40.
3. Pull the CPU PCB and display PCB to the left and lift the CPU PCB and
display PCB from the case. See Figure 8.

Figure 8: Display PCB and CPU PCB Removal

Caution: Do not force the display PCB and CPU PCB apart. This may
damage the boards. Gently work the boards apart.
To separate the Display PCB and the CPU PCB, grasp the display PCB in one
hand and the CPU PCB in the other. Rotate the ends of the two PCBs as
shown in Figure 9 until the two PCBs separate at the connectors J1 and J2.