Sun Microsystems SPARCstation 4, Service Manual

Page: 144 / 190

11-26 SPARCstation 4/Xterminal 1 Service Manual • January 1995
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Remove the Audio Module (if present).
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Remove all DSIMMs.
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Remove the VSIMM (if present).
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Remove the NVRAM.
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Remove the system board.
1. Shut down and power off the system.
See Section 6.1 “Powering Off the System.”
2. Remove the cover and attach a wrist strap.
See Chapter 7.
3. Remove the SBus card.
See Section 11.1.1 “Removing the SBus Card.”
4. Remove the Audio Module (if present).
See Section 11.2.1 “Removing the Audio Module.”
5. Remove all DSIMMs.
See Section 11.3.1 “Removing the DSIMM.”
6. Remove the VSIMM (if present).
See Section 11.4.1 “Removing the VSIMM.”
7. Remove the NVRAM.
See Section 11.6.1 “Removing the NVRAM Chip.”
8. Unplug the DC power, SCSI data, diskette data, and speaker/LED cables (if
present) from the system board.
See
FIGURE 11-27
.