Power-on Sequence
Note
For normal operation, power on the server; then,
power on the expansion enclosure.
The expansion enclosure can be powered on without
connecting it to a server. However, the expansion
enclosure must be connected to a server before the drives
installed in the enclosure can be used.
Power Supply (FRU Number 60H8301)
Note
Verify that the voltage-select switch is set for the
correct voltage. If the voltage switch is set to the
wrong position, permanent damage might occur to the
rack when you power it on.
If the power-on indicator is not on, and the power-supply
fan is not running, check the power cord for proper
installation and continuity.
If the power cord is OK, either the power supply is
defective or a defective device is causing the power supply
to shut off. Check the power supply voltages.
The power supply is rated at 200 watts. Too many
devices (adapters or hard disk drives) can cause power
consumption to exceed 200 watts and cause the power
supply to shut down. See “Power Supply Shutdowns” on
page 5. Remove adapters or devices to determine if this
is the cause.
If the voltages are incorrect, replace the power supply.
DASD Connectors P1, P2, P3, P4, P5, P6, P7, P8
1
4
Aux SCSI Board Power Connectors P9, P10
4
1
−
Lead
Pin
+Lead
Pin
V dc
Minimum
V dc
Maximum
2
3
1
4
+11.52V
+4.8V
+12.6V
+5.25V
−
Lead
Pin
+Lead
Pin
V dc
Minimum
V dc
Maximum
2
3
1
4
+11.52V
+4.8V
+12.6V
+5.25V
4
PC Server HMM
