Sun Microsystems Ultra 1 Series Upgrade Manual page 18

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6. Place the power on/standby switch to standby ( ) (Figure 2-1).
7. Verify the following:
a. Front panel LED is off.
b. System fans are disabled.
Power on/standby switch
Figure 2-1 Rear View of an Ultra 1 System
Warning – Disconnect the AC power cord only before handling the power
supply. Otherwise, leave the AC power cord connected and connected to a
power receptacle. When the power on/standby switch is in standby ( ) and
the AC power cord remains connected to a power receptacle, AC voltage is
present in the power supply transformer primary.
8. Disconnect cables to all peripheral equipment.
8 Sun Ultra 1 Series to Sun Ultra 30 System Upgrade Guide—June 1997