Nellcor NPB-75, Service Manual

Page: 38 / 71

Section 7: Disassembly Guide
7-5
7.4 REPLACING THE SPO
2
BOARD
(Refer to Figure 7-5: Replacing SpO
2
board.)
1. Open the monitor case as described in section 7.2 "Opening the
Monitor Case".
2. Pull out the Internal SpO
2
Connector Lock.
3. Remove the three SpO
2
board Mounting Screws and Washers.
4. Remove the SpO
2
board with attached cables and replace with a
new SpO
2
board. Be sure to reattach the cables and use the new
Internal SpO
2
Connector Lock. Be sure the SpO
2
Insulation
Plate is placed correctly over the three screw mounts.
Caution: When replacing the SpO
2
Mounting Screws, be sure you
use the plastic washers supplied with the original unit.
Caution: When replacing the SpO
2
board, carefully hand-tighten
the Mounting Screws. Overtightening can strip the screw-holes
.
Figure 7-5: Replacing SpO
2
board