Technical information

Chapter 4. Power Supply
Note: Some adapters and hard disk drives draw more current than the recommended limits. These
adapters and drives can be installed in the system; however, the power supply will shut down if the
total power used exceeds the maximum power that is available.
Output Protection
The power supply protects against output overcurrent, overvoltage, and short circuits. Please see the
power supply specifications for details.
A short circuit that is placed on any dc output (between outputs or between an output and dc return)
latches all dc outputs into a shutdown state, with no damage to the power supply.
If this shutdown state occurs, the power supply returns to normal operation only after the fault has been
removed and the power switch has been turned off for at least one second.
If an overvoltage fault occurs (in the power supply), the power supply latches all dc outputs into a
shutdown state before any output exceeds 130% of the nominal value of the power supply.
Table 27. Internal Devices (DASD)
Supply Voltage Maximum Current Regulation Limits
+5.0 V dc 1400 mA +5.0% to −5.0%
+12.0 V dc 1500 mA +5.0% to −5.0%
22 Technical Information Manual