GE Corometrics 126, Service Manual

Page: 349 / 440

Revision B 120 Series Maternal/Fetal Monitor 12-17
2015590-001
Upgrading a 120 Series Monitor: Nellcor MSpO
2
and NBP Option Upgrade Kit
Monitors with a 3.5-inch x 4.5-inch Display
Installation instructions are provided with the kit; they are repeated here for
information purposes.
Unpacking
Unpack the kit and ensure it contains all items on the packing list. If something is
missing, contact your GE Medical Systems
Information Technologies Service
Representative immediately.
Installation
NOTE:
Unless otherwise instructed, retain all hardware for re-assembly.
1. Turn off the 120 Series Monitor and disconnect the power cord from the
monitor.
2. Use a flathead screwdriver to pry off the blank plugs inserted in the
Maternal
SpO
2
and
BP
connectors on the front panel of the monitor. Discard these plugs.
3. Remove the nine screws which secure the monitor top cover. Four screws are
located on the bottom of the monitor and five screws are located in the back.
4. Remove the cover by sliding it toward the rear of the monitor.
5. Disconnect the display interconnect cable from the DSP Board at J5. (Refer to
Figure 12-4 .)
6. Disconnect the ribbon cable from the Recorder Board at J2. Leave the other
end connected to the Main Motherboard. (Refer to
Figure 12-5 .)
7. Disconnect the Power Supply cable harness from the Recorder Board at J1.
(Refer to
Figure 12-5 .)
8. Disconnect the ribbon cable from the membrane switch panel. Leave the other
end connected to the DSP Board.
9. Remove the four screws which fasten the front bezel to the monitor—two on
each side.
10. Gently tilt the bezel forward until it lays flat. Be careful not to disconnect the
front end harness cable ferrite beads from their clips. The number of beads
varies depending on which options are installed in your monitor. (Refer to
Figure 12-6 .)
11. Disconnect the Trim Knob cable assembly from the membrane switch panel.
12. Remove the two nuts holding the membrane panel assembly to the back side of
the bezel assembly.
13. Remove the two screws and accompanying washers fastening the membrane
switch panel metal tabs to the Recorder LED Board.
14. Push the membrane switch panel through the front panel. The switch panel will
automatically disconnect from the Recorder LED Board.
15. Peel off the adhesive backing from the new membrane switch panel supplied
with the kit.