AT&T PC 6300 - Page 570

MAINTENANCE
10. Slide the upper cover of the Small Expansion Box forward
approximately 0.5 inch and lift the cover from the box,
11. Remove the screws that secure the HDU to the Small
Expansion Box chassis.
12. Carefully remove the HDU and cables from the Small
Expansion Box.
Prior to installing the new HDU, verify that it is the same size as
the one just removed.
To reinstall the Small Expansion Box, perform the removal
procedure in reverse order.
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