1-17Installation 15088: K 3/21/01NOTEFor installation of system boards in the first level of theICA-4L, omit Steps 2 and 3.Figure 2.3-8 Mount System Boards to the ICA-4L ChassisStep 1Place the board in front of the Interconnect ChassisAssemblies (ICA-4L) in the position where it will beinstalled. Tilt the board into the ICA-4L and align thesquare slots on the board with the first set of four tabson the ICA-4L as illustrated.○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○Step 3Push the board back again to the second level andthen slide it away from the ICA-4L until it is directlyover the third set of four tabs, now located immediatelybehind the printed circuit board.Step 4Now push the board back so that it is resting on thefour tabs behind the board. Slide the board inwardtoward the center of the ICA-4L and carefully engagethe female connector on the board with the maleconnector on the ICA-4L. When the board is correctlyseated, it will be stopped by a mechanical tab. Someforce is required. Before applying force, carefullycheck alignment of all pins. When finished, the boardshould be seated in a channel consisting of fourretaining tabs in front of the printed circuit board andfour retaining tabs behind the printed circuit board.○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○Step 2Carefully push the board back to the first level and thenslide it away from the ICA-4L, until it is directly over thesecond set of four tabs, now located immediately behindthe printed circuit board.CAUTIONRemove Serial Interface Boards (SIBs) carefully, as themetal tabs on the ICA-4L may shear off some of the SIBcomponents.