GE MEDICAL SYSTEMS 
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
Chapter 8 - Replacement Procedures  8-43
8-4-6 Fan Replacement Procedure
8-4-6-1 Tools
Use the appropriate flat and Phillips-type screw drivers, a wire cutter and the appropriate Hex wrenches 
as indicated in the fan replacement procedure.
8-4-6-2 Preparation
Shut down the Vivid™ 4 ultrasound unit, as described in Chapter 3 - Installation.
8-4-6-3 Fan Removal Procedure
1) Remove the front end crate, as described in the Front End Crate Removal Procedure on page 8 - 41.
2) Unscrew and remove the four screws that secure the fans to the top of the front end crate.
Figure 8-37 Fan Screws
Note: Mark the position at which the fan is attached to the connector, to ensure that the new fan 
is reconnected correctly.
3) Gently lift up the fan and disconnect its wires from the block terminal.
4) Unwrap the spiral wrapping around the harness and release the fan wires.
5) Remove the fan, together with its four Isodamp Grommets and Insulation Sleeves found under each 
corner.
Figure 8-38 Fan Part Details