98 SPARCstation 20 Service Manual • July 1996
FIGURE 8-35 Attaching a Wrist Strap to Back Panel and Removing the Power Supply
Note – The wrist strap is usually grounded to the power supply. When removing or
installing the power supply, ground the wrist strap to the upper edge of the back
panel.
4. Remove any SBus cards.
See “Removing an SBus Card” on page 152.
5. Disconnect the diskette data cable (optional), SCSI data cable, DC power
connector, and the speaker/LED cable from the system board (FIGURE 8-36).
Drive bracket
Captive
screw (2)
Power
supply
DC power
connector
Power supply
rear view
DC power
harness
Wriststrap
System unit backplane metal edge
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