IBM OpenCAPI, Installing And Servicing

Page: 39 / 82

Common procedures for servicing or installing
features in the 8335-GTC, 8335-GTG, 8335-GTH,
8335-GTW, or 8335-GTX system
Learn about the common procedures related to installing, removing, and replacing features in the system.
Before you begin
Observe these precautions when you are installing, removing, or replacing features and parts.
About this task
These precautions are intended to create a safe environment to service your system and do not provide
steps for servicing your system. The installation, removal, and replacement procedures provide the step-
by-step processes that are required to service your system.
DANGER: When working on or around the system, observe the following precautions:
Electrical voltage and current from power, telephone, and communication cables are hazardous. To
avoid a shock hazard: If IBM supplied the power cord(s), connect power to this unit only with the
IBM provided power cord. Do not use the IBM provided power cord for any other product. Do not
open or service any power supply assembly. Do not connect or disconnect any cables or perform
installation, maintenance, or reconfiguration of this product during an electrical storm.
• The product might be equipped with multiple power cords. To remove all hazardous
voltages, disconnect all power cords. For AC power, disconnect all power cords from their AC power
source. For racks with a DC power distribution panel (PDP), disconnect the customer’s DC power source
to the PDP.
• When connecting power to the product ensure all power cables are properly connected. For racks with
AC power, connect all power cords to a properly wired and grounded electrical outlet. Ensure that the
outlet supplies proper voltage and phase rotation according to the system rating plate. For racks with a
DC power distribution panel (PDP), connect the customer’s DC power source to the PDP. Ensure that the
proper polarity is used when attaching the DC power and DC power return wiring.
• Connect any equipment that will be attached to this product to properly wired outlets.
• When possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• Do not attempt to switch on power to the machine until all possible unsafe conditions are corrected.
• When performing a machine inspection: Assume that an electrical safety hazard is present. Perform all
continuity, grounding, and power checks specified during the subsystem installation procedures to
ensure that the machine meets safety requirements. Do not attempt to switch power to the machine
until all possible unsafe conditions are corrected. Before you open the device covers, unless instructed
otherwise in the installation and configuration procedures: Disconnect the attached AC power cords,
turn off the applicable circuit breakers located in the rack power distribution panel (PDP), and
disconnect any telecommunications systems, networks, and modems.
• Connect and disconnect cables as described in the following procedures when installing, moving, or
opening covers on this product or attached devices.
To Disconnect: 1) Turn off everything (unless instructed otherwise). 2) For AC power, remove the power
cords from the outlets. 3) For racks with a DC power distribution panel (PDP), turn off the circuit
breakers located in the PDP and remove the power from the Customer's DC power source. 4) Remove
the signal cables from the connectors. 5) Remove all cables from the devices.
©
Copyright IBM Corp. 2019, 2020 25