Upgrading To A 3.5" X 4.5" Display; Equipment Required; Disassembly - GE Corometrics 126 Service Manual

Upgrading to a 3.5" x 4.5" Display

Revision B
Calibration: Display Check
If you wish to replace an existing 3" x 3.75" display with a larger 3.5" x 4.5"
display, refer to "Chapter 14, Replacement
display kit contains a new front bezel assembly and DSP Board.

Equipment Required

You will need the following equipment:
Phillips Torque Driver
Flathead Screwdriver
Anti-Static Wristband
Static-Free Work Surface

Disassembly

Refer to Figure 7-1 through
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. Disconnect all front panel transducers and accessories.
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.
6. Disconnect switch panel ribbon cable from the DSP Board at J4.
7. Disconnect the recorder output ribbon cable from the Recorder Board at J2.
Leave the other end connected to the Main Motherboard.
8. Disconnect the recorder power supply cable harness from the Recorder Board at
J1.
9. Disconnect the main switch power harness from the connector at the top of the
divider to the recorder cavity.
10. Remove the hold-down cover for the front end boards. Three screws secure the
top; one screw is located on the side panel.
11. Disconnect the front panel US1 harness cable from the Ultrasound Board at J5.
Guide the plastic cable bushing out of the front-end enclosure.
12. Disconnect the front panel US2 harness cable from the Ultrasound Board at J6
and remove the cable bushing from the enclosure.
13. Disconnect the front panel UA harness cable from the Front End Motherboard
at J7.
14. Disconnect the front panel FECG harness cable from the Front end
Motherboard at J6. Pull the cable's ferrite bead out from the retaining clip.
15. If BP is installed in the monitor, disconnect the blood pressure tubing from the
front panel connector board. Label the tubes "top" and "bottom" using masking
tape for future reference.
120 Series Maternal/Fetal Monitor
2015590-001
Parts"to select the correct kit. The
Figure 7-3 while performing the display upgrade.
7-11