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M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 152
Service Procedures: E-box
7. Install the replacement board.
8. Reverse step 5 through step 2 to complete the procedure.
9. Perform all RST and system checks to verify performance.
➤ Replacing the Motherboard
To replace the e-box motherboard, See Figure 13-2 on page 183 to locate parts and assemblies,
and complete the following procedure:
NOTE You can perform this procedure with the e-box mounted in the system, but it is easier
with the e-box removed and separated from the power supply. See “Removing the
Power Supply and the E-box” on page 154 and “Separating the E-box and the Power
Supply” on page 155.
CAUTION Always observe proper ESD procedures when servicing the inside of the e-box. Wear a
grounded wrist band, and work on a static-dissipating mat when possible. See “ESD Safeguards”
on page 139.
1. Remove the BPAP board, the demodulator board, and the two TR boards from the e-box,
following the steps in “Replacing E-box Circuit Boards” on page 151.
2. Disconnect the power cables from the motherboard and the distribution board.
3. Loosen the four screws that secure each of the two septum panels in the e-box, and remove
the septum panels.
4. Remove the 15 screws that secure the motherboard to the e-box center wall.
5. Tilt out the top edge of the motherboard to clear the board racks, and remove the
motherboard.