Specific Oxygen Board (Nellcor Spo Pcb - Mp205 Or Mp506) - Welch Allyn 52000 Series Service Manual

Section 4
Replacing the SpO
2
24. Connect wires to locations as shown in Figure 4-4.
25. Cover bottoms of connections with 376e108 (G.E. gray rtv #167, electronic adhesive
sealant)
Note: Reassemble in reverse order of disassembly.
Verification of repair:
26. When completely assembled, switch the unit to "on" and perform a full functional
check of the SpO function.
2
Specific Oxygen Board (Nellcor SpO
Note: Removing and replacing the Nellcor SpO
and remove the front housing.
1. Turn unit off and disconnect AC power cord from the unit.
2. Disconnect all accessories from the unit.
A.If the unit is pole-mounted, remove unit from the pole.
B. If the unit is wall-mounted, remove unit from the wall.
C. If the unit is free-standing, turn the back towards you.
Battery cover removal:
3. Remove four (4) Phillips head screws from the battery door with the Phillips bit.
4. Remove battery door.
Battery removal from battery compartment:
5. Remove the battery out of the compartment by turning the unit upside down and shaking
until battery begins to slide out.
6. Disconnect the two (2) connectors.
Note: If the battery is to be discarded, comply with all environmental regulations pertaining
to battery disposal.
Opening front housing:
7. Position unit so the front panel is facing down.
8. Remove six (6) Phillips screws with the Phillips bit.
9. Carefully separate the front and rear housings.
Disconnection of connectors:
10. Disconnect the connector from top of main board to relieve strain.
48 Welch Allyn Vital Signs Monitor
board:
Disassembly and Repair
PCB - MP205 or MP506)
2
PCB requires that you remove the battery,
2
Service Manual 95P445E Rev. C