Sun Microsystems SPARCclassic Service Manual page 81

Figure 8–3 System I/O Board and Unit Bottom
2. Place an antistatic mat, shiny side down, next to the system unit.
3. Remove any SBus cards installed in the system unit.
See "SBus Cards" on page 107 for removal procedures.
4. Disconnect all cables attached to the main logic board.
For connector locations, choose the appropriate board illustration in Chapter 11.
1. Disconnect the 12-pin power supply cable from its mating connector by
squeezing the clip at the end of the cable and pulling straight up.
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Major Subassemblies