Sun Microsystems SPARCstation 4, Service Manual

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11-2 SPARCstation 4/Xterminal 1 Service Manual • January 1995
Note – An SBus card extractor is included with all SBus card FRUs. You must
remove the extractor from the replacement card and install it on the defective card.
Then use the SBus card extractor to remove the defective card from the system unit.
If you need to remove an SBus card temporarily, and you do not have a replacement
card, try to find an extractor from some other source. If an extractor is not available,
place both thumbs beneath the corners of the card where it connects to the system
board. Carefully push upward with your thumbs until the card disconnects from the
system board.
11.1.1 Removing the SBus Card
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. Push the upper card retainers back from the edge of the SBus card.
The SBus card is installed in the upper level.
FIGURE 11-2
Opening the SBus Card Retainers
4. Remove the SBus card extractor handle from the replacement SBus card.
a. Bend one leg of the extractor handle slightly to the outside until the hook
clears the hole in the SBus card.
Push back both
upper card retainers.