Sun Microsystems SPARCstation 20, Service Manual

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58 SPARCstation 20 Service Manual • July 1996
FIGURE 8-2
Power Supply and DC Power Harness
Installing the Power Supply
Caution –
Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing it on any surface.
1. Grasp the power supply with one hand; with the other hand, connect the DC
power harness to the rear of the power supply (
FIGURE 8-2
).
2. Lower the power supply into the chassis at an angle such so the DC power
harness fits under the edge of the chassis drive bracket.
3. Slide the power supply toward the rear of the chassis until it locks in the power
supply chassis mounts.
Caution –
Do not use a power driver to tighten the captive screws. Do not
overtighten the captive screws.
4. Tighten the captive screw(s) that secure the power supply to the chassis
(
FIGURE 8-3
).
Note –
Some systems use only one captive screw to secure the power supply.
Power supply
rear view
DC power harness
DC power
connector