Chapter 4 Component Replacement
4-6 Atria Service Manual
Power Supply Board and Power Supply Cover
WARNING: There can be high voltage near the fuse, AC inlet
and transformer. Always unplug the electrocardiograph before
taking it apart.
CAUTION: The power supply board is very sensitive to static
electricity. Use an antistatic work surface.
1. Remove the top enclosure as described earlier.
2. Remove the paper drive assembly as described earlier.
3. Disconnect the cables from the power supply board:
✔ Disconnect the ground cable at P1, next to the power input
✔ Disconnect the 34-pin front end digital board cable at J2
4. Remove the five (5) screws securing the board to the bottom enclosure.
5. Lift power supply board straight up and out.
6. If replacing the power supply cover, lift the power supply cover out.
7. Replace in reverse order. Make sure all wires are properly routed before you
put the top enclosure back on.
power supply
cover
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