Replacing The System I/O Board - Sun Microsystems SPARCclassic Service Manual

2. Use a small flat-blade screwdriver to remove the 10 screws that secure the
system I/O board to the system unit chassis (see Figure 8–7). Take care to
remember where each screw belongs.
3. Pull the system I/O board away from the back panel to remove it.
Figure 8–7 Removing the System I/O Board

Replacing the System I/O Board

To replace the system I/O board:
1. Replace the system I/O board.
a. Position the system I/O board so that its connectors protrude through their
respective openings in the system unit chassis.
b. Align the screw holes in the chassis with the holes in the system I/O board
and secure the board with the 10 screws provided (see Figure 8–7). (Replace
the plastic connector covers, if necessary.)
2. Reinstall the main logic board.
a. Grasp the board by the SBus connectors with both hands. Insert the main
logic board extractor lever through the rectangular cutout in the main logic
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Major Subassemblies