Section 7 —Disassembly
Page 7-24
VitalCare
TM
506N3 Series
Service Manual
Criticare Systems, Inc.
Replace Main Board
NOTE
: If upgrading the Main Board from pn 91384A001 or
91384A002 to pn 91384A003, refer to “Appendix A – Main Board
Upgrades” for more details.
First perform “Disassemble Front Bezel from Rear Housing”
procedure.
1. Remove the speaker from the rail of the bezel. Lift the orange
and brown wires from the relief of main as shown below.
Figure 7-30: Remove Speaker
2. Unplug the speaker assembly (pn 90932A001) from
J3
of the
Main Board. Place speaker assembly aside.
3. With a #1 Phillips screwdriver, remove the screw
(pn 40995B005) and washer (pn 40086B002) holding the folded
tab from the membrane to the Main Board.
Figure 7-31: Membrane Tab
NOTE
: If replacing an older Main Board (pn 91384A001 or
91384A002), remove the two (2) screws holding the ground wire
to the Main Board. Disconnect the green ground wire from
P3
on the Main Board.
4. Remove the four(4) remaining screws located on the top,
bottom left and middle. (Or three (3) screws on the top and
middle if the monitor had a ground wire which you removed in
the previous step.)
Speaker
Folded Tab
from Membrane
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