IBM 87401RU, Installation And User Manual

Page: 33 / 110

Attention: Only trained service personnel, other than IBM service
technicians, are authorized to make the connections to and
disconnections from the -48 volt dc power source. IBM service
technicians are not certified or authorized to install or remove the -48 volt
power cable. The customer is responsible for ensuring that only trained
service personnel install or remove the -48 volt power cable.
b. Turn off the power source.
c. Remove the dc terminal cover for each power terminal. See “Removing a
dc terminal cover” on page 42 for more information.
Nut
Flat washer
(optional)
Split washer
d. Remove the nut, split washer, flat washer, and power cord from each
terminal post.
e. Remove the power cables.
v
BladeCenter HT type 8750:
a. Make sure the blade servers are powered off.
Statement 33:
CAUTION:
This device does not provide a power control button. Removing
power supply modules or turning off the server blades does not turn
off the electrical current supplied to the device. The device also
might have more than one power cord. To remove all electrical
current from the device, ensure that all power cords are
disconnected from the power source.
3 1
2 4
Chapter 2. BladeCenter HT unit power, components, and indicators
17