Stryker Medical 1050, Maintenance Manual

Page: 30 / 108

Service Information
25
LOGIC CIRCUIT BOARD REPLACEMENT
Logic Circuit Board Part Number 1550–80–900
Required Tools:
Standard Screwdriver 5/32” Allen Wrench 7/64” Allen Wrench
Procedure:
1. Unplug the power cord from the wall socket. Properly ground yourself (see page 18).
2. Lift the foot section and pivot it back, securing it with a string or cord. Using a 5/32” Allen wrench, remove
the four screws and two Knee Gatch guides from the sides of the motor/board enclosure cover. Using a
standard screwdriver, remove the two sheet metal screws holding the cover to the foot end frame tube
and remove the cover.
3. Disconnect all cables and connectors from the logic circuit board, noting their locations so they will be re-
connected properly.
4. Using a 7/64” Allen wrench, remove the 6 Allen screws on the bottom of the motor/board enclosure. Lift
the logic circuit board out of the enclosure.
5. Reverse the above steps to install the new circuit board. Reinstall the enclosure cover and Knee Gatch
guides with the four socket head cap screws. When reinstalling the Knee Gatch guides, be sure the large
hole in the guide is toward the foot (crank) end with the ridged side of the guide facing out. Install the two
sheet metal screws. Test all bed functions before returning the stretcher to service.
PATIENT CONTROL LOCKOUT SWITCH REPLACEMENT
Rocker Switch Part Number 59–68
Required Tools:
Standard Screwdriver 5/32” Allen Wrench
Procedure:
1. Unplug the power cord from the wall socket. Properly ground yourself (see page 18).
2. Lift the foot section and pivot it back, securing it with a string or cord. Using a 5/32” Allen wrench, remove
the four screws and two Knee Gatch guides from the sides of the motor/board enclosure cover. Using a
standard screwdriver, remove the two sheet metal screws holding the cover to the foot end frame tube
and remove the cover.
3. Disconnect the three cables leading from the rocker switch to the lockout cable on the logic circuit board.
4. From inside the enclosure, squeeze the sides of the rocker switch and push the switch out of the frame
tube.
5. Push the new switch into the frame tube, threading the three cables through the tube. Connect the cables
to the lockout cable, being sure the white cable is connected in the center.
6. Reinstall the enclosure cover and Knee Gatch guides with the four socket head cap screws. When reinstal-
ling the Knee Gatch guides, be sure the large hole in the guide is toward the foot (crank) end with the ridged
side of the guide facing out. Install the two sheet metal screws.
7. Plug the stretcher power cord into a properly grounded wall receptacle and test the lockout function before
returning the stretcher to service.