IBM CS821, Service Manual

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v 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.
v Do not continue with the inspection if any unsafe conditions are present.
v 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.
DANGER:
v 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.
To Connect:
1. Turn off everything (unless instructed otherwise).
2. Attach all cables to the devices.
3. Attach the signal cables to the connectors.
4. For AC power, attach the power cords to the outlets.
5. For racks with a DC power distribution panel (PDP), restore the power from the Customer's DC
power source and turn on the circuit breakers located in the PDP.
6.
Turn on the devices.
Sharp edges, corners and joints may be present in and around the system. Use care when handling
equipment to avoid cuts, scrapes and pinching. (D005)
Attention:
Failure to follow the step-by-step sequence for FRU removal or installation might result in FRU or system
damage.
For safety, airflow purposes and thermal performance, the service access cover must be installed and fully
seated before you power the system on.
For safety and airflow purposes and thermal performance, if you remove parts from the system, you
must ensure that PCIe tail-stock fillers are present.
Use the following precautions whenever you handle electronic components or cables.
v The electrostatic discharge (ESD) kit and the ESD wrist strap must be used when you handle logic
cards, single chip modules (SCM), multichip modules (MCM), electronic boards, and disk drives.
v Keep all electronic components in the shipping container or envelope until you are ready to install
them.
v If you remove and then reinstall an electronic component, temporarily place the component on an ESD
pad or blanket.
Removing and replacing a storage drive in the 8001-12C or 8005-12N
Learn how to remove and replace a storage drive in the IBM Power
®
System S821LC (8001-12C) or the
IBM CS821 (8005-12N) system.
2
Power Systems: Servicing the IBM Power System S821LC (8001-12C) or the IBM CS821 (8005-12N)