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M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 154
Service Procedures: Power Supply
4. Remove the eight screws that secure the distribution board to the e-box center wall.
5. Tilt out the top edge of the distribution board and remove the board.
6. Reverse step 5 through step 1 to install the motherboard.
7. Perform all RST and system checks to verify performance.
Power Supply
The M2540A power supply is not serviceable in the field, except for replacing the fan. The power
supply and the e-box are bolted together and must be removed from the system before they can
be separated. Replacement power supplies are supplied with the fan and the finger guard
installed.
➤ Removing the Power Supply and the E-box
To remove the power supply and the e-box from the system, see Figure 13-3 on page 185 to
locate parts and assemblies, and complete the following procedure:
1. Disconnect the system power cord from the main AC supply.
2. Remove the service panel at the right front of the lower enclosure by pressing down the two
latches at the panel’s top.
3. Remove the two screws that secure the power supply to the angle bracket at the front of the
enclosure floor.
4. Remove the three screws from the bottom of the lower enclosure’s right side panel, and
remove the panel.
5. Disconnect all the cables from the rear of the e-box and the power supply. Mark the cable in
the top outlet. It powers the PC, and that outlet is powered whenever the system power
cable is plugged into a power source. If the PC is connected to one of the other outlets, it
does not boot up.