To Power On The Cabinet Power Supply - Sun Microsystems StorEdge A7000 Service Manual

7.4.3

To Power On the Cabinet Power Supply

Power on both cabinet power supplies; these supplies provide power to the blowers
at the bottom of the cabinet and the System Console transformer (located in the
carrier tray). To power on the cabinet power supplies:
1. At the left AC distribution box, throw the main circuit breaker switch CB1 to the
right (ON). See
2. Press the cabinet power switch to turn on power to the cabinet.
3. Repeat the above steps for the right AC distribution box.
4. Listen for the blower fans; this indicates power has been applied to the cabinet.
7.4.3.1 To Check the AC Relay Switch
These steps verify that the AC relay switch is operating.
5. Perform steps 2 and 3 for both AC boxes.
6. At the AC box you first powered on (for dsp1), throw the main circuit breaker
switch CB1 to the left (OFF) and verify that all three blower fans continue to
operate.
7. Throw switch CB1 to the right (ON). Verify that power is restored by seeing that
the switch lights.
8. At the AC box for dsp2, throw switch CB1 to the left (OFF) and verify that all three
blower fans continue to operate.
9. Throw switch CB1 to the right (ON). Verify that power is restored by seeing that
the switch lights.
7.4.3.2 To Check Any Other Switches
10. Power on the LAD/SCSI Expander. See
11. Open the I/O Bay cabinet doors. Just above the right power cord are two switches
labeled DSP1 and DSP2. Press the top of the switch to throw these to ON. See
FIGURE 7-8
LED in each switch will light.
.
FIGURE 7-6
. These supply power to the dual DC supplies for each subsystem. The
for switch location.
FIGURE 7-7
Chapter 7 Operation 7-11