Chapter 9. Removal And Replacement Procedures - IBM pSeries 630 6C4 Service Manual

Chapter 9. Removal and Replacement Procedures

Notes:
1. Servicing of the Model 6E4 can be performed with the system in either the vertical or horizontal
position. Servicing of the Model 6C4 is performed with the system in the rack and placed into the
service position. The service position for the Model 6C4 is described in "Placing the Model 6C4 into
the Service Position" on page 429.
2. Before performing any of the removal or replacement procedures in this chapter, read the following
danger and caution notices.
In the system you are about to set up or service:
v The ac power interface connector is considered the main power disconnect device.
v This system has redundant power supply capabilities, meaning that it has the ability to have two power
supplies running simultaneously in the same system unit. When instructed to disconnect the power
source, ensure that all power cables have been unplugged.
DANGER
An electrical outlet that is not correctly wired could place hazardous voltage on metal parts of
the system or the devices that attach to the system. It is the responsibility of the customer to
ensure that the outlet is correctly wired and grounded to prevent an electrical shock.
Before installing or removing signal cables, ensure that the power cables for the system unit
and all attached devices are unplugged.
When adding or removing any additional devices to or from the system, ensure that the power
cables for those devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
Use one hand, when possible, to connect or disconnect signal cables to prevent a possible
shock from touching two surfaces with different electrical potentials.
During an electrical storm, do not connect cables for display stations, printers, telephones, or
station protectors for communications lines.
D05
CAUTION:
This product is equipped with a three-wire power cable and plug for the user's safety. Use this
power cable with a properly grounded electrical outlet to avoid electrical shock.
C01
CAUTION:
This unit has more than one power supply cord. To reduce the risk of electrical shock, disconnect
two power supply cords before servicing.
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