9 Anesthetic Gas Module Repairing the Anesthetic Gas Module
244
Power Supply Unit
Removal
To remove the power supply unit (refer to Figure 68):
1 Ensure that the module is switched off and isolated from the mains power supply. Remove the top
cover of the module.
2 Remove the ac power connector (1) from the power supply unit.
3 Remove the power connector (2) from the main PC board.
4 Using a cross-tipped screwdriver, remove the four screws (3) securing the power supply unit to its
mounting.
5 Remove the power supply unit.
Replacement
To replace the power supply unit (refer to Figure 68):
1 Ensure that the module is switched off and isolated from the mains power supply.
2 Carefully place the power supply unit so that its locating holes are aligned with the threaded bores
in the mounting on the module.
3 Using a cross-tipped screwdriver, replace the four screws (3) securing the power supply unit to its
mounting.
4 Connect the power connector (2) to the main PC board.
5 Connect the ac power connector (1) to the power supply unit.
6 Replace the top cover of the module.
Now perform the performance checks described in the “Test and Inspection Matrix” on page 262.
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