G. PWB cover installation � Install the PWB cover with screws.
4. PS kit (AR-PS1) installation
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Fix the PS PWB with pawl.
�Note: The DIMM connector and the PS-PWB are provided with the reverse insertion protection key(notch). A strong push, however, allows reverse insertion. Use great care of the inserting direction.
3. Expansion memory installation
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Fix the memory PWB with pawls.
5. Network Interface Control PWB installation
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Insert the network PWB into the printer PWB connector and fix it with screws.