Replacing Sbus Cards - Sun Microsystems SPARCclassic Service Manual

Figure 11–2

Replacing SBus Cards

Caution -
LED at the front of the system unit should not be lit and the fan should not be
running. When the system power switch is in the Standby position, and the AC
power cord remains connected to a power outlet, hazardous AC voltage is still
present in the power supply primary. Do not attempt to service the power supply
under these conditions. Disconnect the AC power cord prior to handling the power
supply. When servicing any other system component, the AC power cord should
remain connected and poses no safety hazard.
To install a replacement SBus card in the system unit:
1. Remove the faulty SBus card.
See "Removing SBus Cards" on page 107. Make sure you use the wrist strap and
antistatic mat. Be sure to remember which slot contained the faulty SBus card.
2. Read the manual supplied with the replacement SBus card.
Pay particular attention to the section describing the jumper or switch settings,
slot requirements, and tools needed.
3. Remove the replacement card from its antistatic bag. Hold the card by the
edges.
SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual ♦ Revision A, November 1993
110
SBus Slot Filler Panels
Verify that the system power switch is in the Standby position. The green