GE Corometrics 126 User Manual

10-8 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Strip Chart Recorder Servicing: Field Serviceable Assemblies
Thermal Printhead
The thermal printhead is a part of the printhead assembly. Refer to the parts list in
“Chapter 16, Assembly Drawings and Parts Lists”, of this manual for ordering
information and illustrations showing the printhead assembly.
Removing the Printhead
Use the following procedure for removing the 120 Series Monitor printhead. As
long as you have a short screwdriver, you will not need to remove the strip chart
recorder from the monitor.
1. Turn off the 120 Series Monitor and disconnect the power cord from the
monitor.
2. 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.
3. Remove the cover by sliding it toward the rear of the monitor.
4. Disconnect the printhead harness cable from J3 on the Recorder Board.
5. Open the recorder door.
6. Support the printhead by reaching in through the recorder door, then remove the
two screws on top of the printhead.
7. Pull the printhead down and out through the recorder door with the harness still
attached.
NOTE: If you are familiar with other Corometrics monitors, be assured that the
four pressure springs are held captive and will not fall out.
8. Remove the harness cable from the printhead and retain for use with
replacement printhead.
Replacing the Printhead
Use the following procedure for installing a 120 Series Monitor printhead:
1. Turn off the 120 Series Monitor and disconnect the power cord from the
monitor.
2. Carefully remove the new printhead from the packaging; do not touch any of
the contact pins. Record the voltage rating marked on the decal affixed to the
bottom of the printhead. This value is the VHEAD voltage. The voltage rating
should be marked over the old voltage rating on the printhead bracket.
3. Re-connect the harness cable to the printhead.
4. Slide the new printhead into position through the recorder door and under its
bracket. Push on the center of the printhead to ensure it is pushed all the way
back.
5. Align the printhead with the front holes in the bracket and replace the two
screws.
6. Re-connect the harness cable to the Recorder Board at J3.
7. Connect the positive lead of a voltmeter to TP1 on the Recorder Board; connect
the negative lead to TP2.
8. Re-connect the monitor power cord and then turn on the monitor.

GE Corometrics 126 Specifications

General

Brand	GE
Model	Corometrics 126
Category	Medical Equipment
Language	English