IBM Power System 8335-GCA User manual

Power Systems
Problem analysis, system parts, and
locations for the IBM Power System
S822LC (8335-GCA, 8335-GTA, and
8335-GTB), and IBM Power System
S812LC (8348-21C)
IBM

Power Systems
Problem analysis, system parts, and
locations for the IBM Power System
S822LC (8335-GCA, 8335-GTA, and
8335-GTB), and IBM Power System
S812LC (8348-21C)
IBM

Note
Before using this information and the product it supports, read the information in “Safety notices” on page v, “Notices” on
page 145, the IBM Systems Safety Notices manual, G229-9054, and the IBM Environmental Notices and User Guide, Z125–5823.
This edition applies to IBM Power Systems™servers that contain the POWER8®processor and to all associated
models.
© Copyright IBM Corporation 2015, 2019.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Safety notices ................................. v
Beginning troubleshooting and problem analysis .................. 1
Determining the problem analysis procedure to perform..................... 1
Resolving a BMC access problem ............................ 2
Resolving a power problem .............................. 3
Resolving a system firmware boot failure .......................... 4
Resolving a VGA monitor problem ............................ 8
Resolving an operating system boot failure ......................... 9
Resolving a sensor indicator problem ........................... 11
Resolving a hardware problem ............................. 12
Resolving a GPU, PCIe adapter, or device problem ...................... 13
Resolving a RAID adapter problem .......................... 14
Resolving a network adapter problem ......................... 15
Resolving a graphics processing unit problem ....................... 16
Resolving an NVMe Flash adapter problem ....................... 19
Resolving a storage device problem .......................... 20
Identifying the location of the PCIe adapter by using the slot number ............... 21
Identifying the location of the GPU .......................... 22
Identifying the location of the NVMe Flash adapter ..................... 23
Identifying the location of the storage device ....................... 24
User guides for GPUs and PCIe adapters ........................ 25
Resolving an over temperature problem for a water-cooled 8335-GTB system ............. 26
Identifying a service action .............................. 27
Identifying a service action by using system event logs.................... 27
Identifying service action keywords in system event logs ................... 36
Identifying a service action by using sensor and event information ................ 37
Identifying a service action by using sensor and event information for the 8335-GCA and 8335-GTA ... 37
Identifying a service action by using sensor and event information for the 8335-GTB ......... 57
Identifying a service action by using sensor and event information for the 8348-21C ......... 78
Isolation procedures ................................ 96
EPUB_PRC_FIND_DECONFIGURE_PART isolation procedure ................. 96
EPUB_PRC_SP_CODE isolation procedure ........................ 97
EPUB_PRC_PHYP_CODE isolation procedure ....................... 97
EPUB_PRC_ALL_PROCS isolation procedure ....................... 98
EPUB_PRC_ALL_MEMCRDS isolation procedure...................... 98
EPUB_PRC_LVL_SUPPORT isolation procedure ...................... 99
EPUB_PRC_MEMORY_PLUGGING_ERROR isolation procedure ................ 100
EPUB_PRC_FSI_PATH isolation procedure ....................... 100
EPUB_PRC_PROC_AB_BUS isolation procedure...................... 101
EPUB_PRC_PROC_XYZ_BUS isolation procedure ..................... 101
EPUB_PRC_EIBUS_ERROR isolation procedure ...................... 102
EPUB_PRC_POWER_ERROR isolation procedure ..................... 103
EPUB_PRC_MEMORY_UE isolation procedure ...................... 104
EPUB_PRC_HB_CODE isolation procedure ....................... 104
EPUB_PRC_TOD_CLOCK_ERR isolation procedure .................... 106
EPUB_PRC_COOLING_SYSTEM_ERR isolation procedure .................. 106
EPUB_PRC_GPU_ISOLATION_PROCEDURE isolation procedure ................ 107
Verifying a repair ................................. 108
Collecting diagnostic data .............................. 109
Contacting IBM service and support........................... 110
Finding parts and locations .......................... 111
8335-GCA and 8335-GTA locations ........................... 111
8335-GCA and 8335-GTA parts ............................ 115
© Copyright IBM Corp. 2015, 2019 iii

Finding parts and locations .......................... 121
8335-GTB locations ................................ 121
8335-GTB parts .................................. 125
Finding parts and locations .......................... 133
8348-21C locations................................. 133
8348-21C parts .................................. 138
Notices ................................... 145
Accessibility features for IBM Power Systems servers ..................... 146
Privacy policy considerations ............................. 147
Trademarks ................................... 148
Electronic emission notices .............................. 148
Class A Notices................................. 148
Class B Notices................................. 152
Terms and conditions................................ 155
iv Problem analysis, system parts, and locations for the 8335-GCA, 8335-GTA, 8335-GTB, and 8348-21C

Safety notices
Safety notices may be printed throughout this guide:
vDANGER notices call attention to a situation that is potentially lethal or extremely hazardous to
people.
vCAUTION notices call attention to a situation that is potentially hazardous to people because of some
existing condition.
vAttention notices call attention to the possibility of damage to a program, device, system, or data.
World Trade safety information
Several countries require the safety information contained in product publications to be presented in their
national languages. If this requirement applies to your country, safety information documentation is
included in the publications package (such as in printed documentation, on DVD, or as part of the
product) shipped with the product. The documentation contains the safety information in your national
language with references to the U.S. English source. Before using a U.S. English publication to install,
operate, or service this product, you must first become familiar with the related safety information
documentation. You should also refer to the safety information documentation any time you do not
clearly understand any safety information in the U.S. English publications.
Replacement or additional copies of safety information documentation can be obtained by calling the IBM
Hotline at 1-800-300-8751.
German safety information
Das Produkt ist nicht für den Einsatz an Bildschirmarbeitsplätzen im Sinne § 2 der
Bildschirmarbeitsverordnung geeignet.
Laser safety information
IBM®servers can use I/O cards or features that are fiber-optic based and that utilize lasers or LEDs.
Laser compliance
IBM servers may be installed inside or outside of an IT equipment rack.
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:
vIf 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.
vDo not open or service any power supply assembly.
vDo not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this
product during an electrical storm.
vThe 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.
vWhen connecting power to the product ensure all power cables are properly connected.
© Copyright IBM Corp. 2015, 2019 v

– 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.
vConnect any equipment that will be attached to this product to properly wired outlets.
vWhen possible, use one hand only to connect or disconnect signal cables.
vNever turn on any equipment when there is evidence of fire, water, or structural damage.
vDo not attempt to switch on power to the machine until all possible unsafe conditions are corrected.
vAssume 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.
vDo not continue with the inspection if any unsafe conditions are present.
vBefore 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:
vConnect 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)
(R001 part 1 of 2):
DANGER: Observe the following precautions when working on or around your IT rack system:
vHeavy equipment–personal injury or equipment damage might result if mishandled.
vAlways lower the leveling pads on the rack cabinet.
vAlways install stabilizer brackets on the rack cabinet.
vTo avoid hazardous conditions due to uneven mechanical loading, always install the heaviest devices
in the bottom of the rack cabinet. Always install servers and optional devices starting from the bottom
of the rack cabinet.
vRack-mounted devices are not to be used as shelves or work spaces. Do not place objects on top of
rack-mounted devices. In addition, do not lean on rack mounted devices and do not use them to
stabilize your body position (for example, when working from a ladder).
vi Problem analysis, system parts, and locations for the 8335-GCA, 8335-GTA, 8335-GTB, and 8348-21C

vEach rack cabinet might have more than one power cord.
– For AC powered racks, be sure to disconnect all power cords in the rack cabinet when directed to
disconnect power during servicing.
– For racks with a DC power distribution panel (PDP), turn off the circuit breaker that controls the
power to the system unit(s), or disconnect the customer’s DC power source, when directed to
disconnect power during servicing.
vConnect all devices installed in a rack cabinet to power devices installed in the same rack cabinet. Do
not plug a power cord from a device installed in one rack cabinet into a power device installed in a
different rack cabinet.
vAn electrical outlet that is not correctly wired could place hazardous voltage on the 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.
(R001 part 2 of 2):
CAUTION:
vDo not install a unit in a rack where the internal rack ambient temperatures will exceed the
manufacturer's recommended ambient temperature for all your rack-mounted devices.
vDo not install a unit in a rack where the air flow is compromised. Ensure that air flow is not blocked
or reduced on any side, front, or back of a unit used for air flow through the unit.
vConsideration should be given to the connection of the equipment to the supply circuit so that
overloading of the circuits does not compromise the supply wiring or overcurrent protection. To
provide the correct power connection to a rack, refer to the rating labels located on the equipment in
the rack to determine the total power requirement of the supply circuit.
v(For sliding drawers.) Do not pull out or install any drawer or feature if the rack stabilizer brackets are
not attached to the rack. Do not pull out more than one drawer at a time. The rack might become
unstable if you pull out more than one drawer at a time.
v(For fixed drawers.) This drawer is a fixed drawer and must not be moved for servicing unless specified
by the manufacturer. Attempting to move the drawer partially or completely out of the rack might
cause the rack to become unstable or cause the drawer to fall out of the rack.
Safety notices vii

CAUTION:
Removing components from the upper positions in the rack cabinet improves rack stability during
relocation. Follow these general guidelines whenever you relocate a populated rack cabinet within a
room or building.
vReduce the weight of the rack cabinet by removing equipment starting at the top of the rack
cabinet. When possible, restore the rack cabinet to the configuration of the rack cabinet as you
received it. If this configuration is not known, you must observe the following precautions:
– Remove all devices in the 32U position (compliance ID RACK-001 or 22U (compliance ID RR001)
and above.
– Ensure that the heaviest devices are installed in the bottom of the rack cabinet.
– Ensure that there are little-to-no empty U-levels between devices installed in the rack cabinet
below the 32U (compliance ID RACK-001 or 22U (compliance ID RR001) level, unless the
received configuration specifically allowed it.
vIf the rack cabinet you are relocating is part of a suite of rack cabinets, detach the rack cabinet from
the suite.
vIf the rack cabinet you are relocating was supplied with removable outriggers they must be
reinstalled before the cabinet is relocated.
vInspect the route that you plan to take to eliminate potential hazards.
vVerify that the route that you choose can support the weight of the loaded rack cabinet. Refer to the
documentation that comes with your rack cabinet for the weight of a loaded rack cabinet.
vVerify that all door openings are at least 760 x 230 mm (30 x 80 in.).
vEnsure that all devices, shelves, drawers, doors, and cables are secure.
vEnsure that the four leveling pads are raised to their highest position.
vEnsure that there is no stabilizer bracket installed on the rack cabinet during movement.
vDo not use a ramp inclined at more than 10 degrees.
vWhen the rack cabinet is in the new location, complete the following steps:
– Lower the four leveling pads.
– Install stabilizer brackets on the rack cabinet.
– If you removed any devices from the rack cabinet, repopulate the rack cabinet from the lowest
position to the highest position.
vIf a long-distance relocation is required, restore the rack cabinet to the configuration of the rack
cabinet as you received it. Pack the rack cabinet in the original packaging material, or equivalent.
Also lower the leveling pads to raise the casters off of the pallet and bolt the rack cabinet to the
pallet.
(R002)
(L001)
DANGER: Hazardous voltage, current, or energy levels are present inside any component that has this
label attached. Do not open any cover or barrier that contains this label. (L001)
(L002)
viii Problem analysis, system parts, and locations for the 8335-GCA, 8335-GTA, 8335-GTB, and 8348-21C