IBM Power775 Manual

Power775 Time of Day (TOD) Battery Service Procedure
PN: 41U8496, EC N44172
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Power775
Time of Day (TOD) Battery Service Procedure
Last Modified 9/30/2011

Power775 Time of Day (TOD) Battery Service Procedure
PN: 41U8496, EC N44172
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CONTENTS
1GENERAL ....................................................................................................................................................................4
1.1 R ELEASE / R EVISION H ISTORY .................................................................................................................................4
1.2 W HERE TO FIND THIS DOCUMENT , AND CONTENTS OF THE PARENT PDF................................................................4
1.3 R EQUIRED D OCUMENTS ...........................................................................................................................................4
1.4 A BBREVIATIONS ......................................................................................................................................................5
2OVERVIEW .................................................................................................................................................................6
2.1 S AFETY N OTICES .....................................................................................................................................................6
2.2 C ONFIRM HOW YOU GOT TO THIS P OWER 775 T IME OF D AY (TOD) B ATTERY S ERVICE P ROCEDURE ...................6
2.3 T IME OF D AY (TOD) B ATTERY D ESCRIPTION .........................................................................................................6
2.4 B ACKGROUND ..........................................................................................................................................................7
2.5 C ONCURRENCY ........................................................................................................................................................7
2.6 T IME OF D AY (TOD) B ATTERY W EIGHT .................................................................................................................7
2.7 R EQUIRED SSR S AND R OLES ...................................................................................................................................7
2.8 E STIMATED S ERVICE T IME ......................................................................................................................................7
2.9 P7IH H AND T OOL K IT R EQUIRED T OOLS ................................................................................................................7
2.10 P REREQUISITES FOR THIS P ROCEDURE ....................................................................................................................8
2.11 O VERVIEW OF P ROCEDURE ......................................................................................................................................8
3SERVICE PROCEDURE............................................................................................................................................9
3.1 I DENTIFY CEC D RAWER REQUIRING B ATTERY S ERVICE <= SSR TASK...............................................................9
3.2 R EMOVE B ATTERY C OVER AND B ATTERY <= SSR TASK...................................................................................12
3.3 I NSTALL NEW B ATTERY AND R E - INSTALL B ATTERY C OVER <= SSR TASK .......................................................13
3.4 V ERIFY B ATTERY I NSTALLATION <= SSR TASK .................................................................................................16
4END OF POWER775 TIME OF DAY (TOD) BATTERY SERVICE PROCEDURE .......................................20
5APPENDIX A: POWER775 BPC FSP COMMAND LINE PROCEDURE.........................................................21
5.1 P ROCEDURE TO A CCESS THE BPC FSP C OMMAND L INE ......................................................................................21
5.2 E ND OF A PPENDIX A: P OWER 775 BPC FSP C OMMAND L INE P ROCEDURE ..........................................................23

Power775 Time of Day (TOD) Battery Service Procedure
PN: 41U8496, EC N44172
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Figure List
Figure 1 Blue Battery Cover Location ...................................................................................................................................................7
Figure 2 Battery Location with Blue Battery Cover Removed ..............................................................................................................7
Figure 3 Identify LED Selection ............................................................................................................................................................9
Figure 4 System Unit, Model F2C Selection........................................................................................................................................10
Figure 5 Battery Identify LED Selection in DCCA .............................................................................................................................11
Figure 6 Depressing Blue Battery Cover Tab ......................................................................................................................................12
Figure 7 Removing Blue Battery Cover...............................................................................................................................................12
Figure 8 Battery Removal ....................................................................................................................................................................12
Figure 9 Battery Replacement..............................................................................................................................................................13
Figure 10 Replacing Blue Battery Cover .............................................................................................................................................13
Figure 11 Replacing Blue Battery Cover Continued............................................................................................................................14
Figure 12 Securing Blue Battery Cover ...............................................................................................................................................14
Figure 13 Manage Serviceable Events .................................................................................................................................................16
Figure 14 Filter Serviceable Events .....................................................................................................................................................17
Figure 15 Serviceable Event Selection.................................................................................................................................................18
Figure 16 Add comments panel ...........................................................................................................................................................19
Figure 17 Close Serviceable Event ......................................................................................................................................................19
Table List
Table 1 Release / Revision History ........................................................................................................................................................4
Table 2 Required Documents.................................................................................................................................................................4
Table 3 Abbreviations ............................................................................................................................................................................5

Power775 Time of Day (TOD) Battery Service Procedure
PN: 41U8496, EC N44172
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1 GENERAL
1.1 Release / Revision History
Document Name Date PDF name Description
Power775 Time of Day (TOD) Battery Service Procedure 9/30/2011 “p775_tod_battery.pdf” Initial Release
Table 1 Release / Revision History
1.2 Where to find this document, and contents of the parent PDF
The current Power775 Time of Day (TOD) Battery Service Procedure document is “p775_tod_battery.pdf” which is to be
downloaded from:
InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm
Click “PDF files for the IBM Power 775 (9125-F2C) removing and replacing parts”
Under “CEC Drawer”, click “Power775 Time of Day (TOD) Battery Service Procedure” to download PDF
“p775_tod_battery.pdf”
This is the only valid source for the latest Power775 Time of Day (TOD) Battery Service Procedure.
1.3 Required Documents
Document Doc Number Location
Safety Notices
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7hdx/G229-
9054.pdf
Doc# G229-9054 InfoCenter *
Table 2 Required Documents
*InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm

Power775 Time of Day (TOD) Battery Service Procedure
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1.4 Abbreviations
Abbreviation Definition Details
CEC Central Electronic Complex Also referred to as the node.
DCCA Distributed Conversion and Control
Assembly
The Power Supply for CEC and DE are call the CEC
DCCA and DE DCCA respectively
DE Disk Enclosure
GPFS Global Parallel File System IBM’s file system utilizing software RAID
HDD Hard Disk Drive This also means hard drive
LED Light Emitting Diode
PCB Printed Circuit Board
RAID Redundant Array of Inexpensive Disks
SAS Serial Attached SCSI Protocol used for direct attached storage
SSR System Service Representative IBM Service personnel
SSD Solid State Drive
UEPO Unit Emergency Power Off
Table 3 Abbreviations

Power775 Time of Day (TOD) Battery Service Procedure
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2 OVERVIEW
This section is an overview only. Do not start the service procedure until Section 3 which contains the detailed steps.
2.1 Safety Notices
Read “Safety_Notices “ available from InfoCenter at this link:
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7hdx/G229-9054.pdf
The following cautions apply to all Power775 service procedures:
CAUTION:
Energy hazard present. Shorting might result in system outage and possible physical injury.
Remove all metallic jewelry before servicing. (C001)
CAUTION:
The doors and covers to the product are to be closed at all times except for service by trained
service personnel. All covers must be replaced and doors locked at the conclusion of the service
operation. (C013)
CAUTION:
Servicing of this product or unit is to be performed by trained service personnel only. (C032)
The following notices specifically pertain to this Power775 service procedure.
CAUTION:
Only trained service personnel may replace this battery. The battery contains lithium. To
avoid possible explosion, do not burn or charge the battery. Do not: Throw or immerse into
water, heat to more than 100°C (212°F), repair or disassemble. (C002)
2.2 Confirm how you got to this Power 775 Time of Day (TOD) Battery
Service Procedure
You should be performing this procedure if
An SRC directed you to replace the battery
You should have downloaded this procedure from:
InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm
This is the only valid source for the latest Power775 Time of Day (TOD) Battery Service Procedure
2.3 Time of Day (TOD) Battery Description
Referring to Figure 1 and Figure 2 below, the Battery Cover and Battery are located at the middle right of each DCCA in
all CEC drawers at the front of the system.

Power775 Time of Day (TOD) Battery Service Procedure
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Figure 1 Blue Battery Cover Location
Figure 2 Battery Location with Blue Battery Cover Removed
2.4 Background
The battery provides Real Time Clock(RTC) function for the DCCA unit when 350VDC is not present on the DCCA power
cables. When 350VDC is present at the DCCA power connection, the RTC function will be powered by a regulator within
the DCCA circuitry. There is a blue cover placed over the top of the battery.
2.5 Concurrency
The battery replacement is concurrently maintainable. The CEC will be powered on with 350 Volts DC during this
procedure.
2.6 Time of Day (TOD) Battery Weight
The battery and battery cover have negligible weight.
2.7 Required SSRs and Roles
This service procedure requires 1 SSR.
2.8 Estimated Service Time
20 minutes
2.9 P7IH Hand Tool Kit Required Tools
None

Power775 Time of Day (TOD) Battery Service Procedure
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2.10 Prerequisites for this Procedure
In order to perform this procedure, you will need the following information:
1) The location code of the FRU to be serviced
2) The cage location of the FRU to be serviced
3) The frame number of the FRU to be serviced
2.11 Overview of Procedure
This is an overview of the tasks to be performed. Read this overview but do not perform any of the tasks yet.
3.1 I DENTIFY CEC D RAWER REQUIRING B ATTERY S ERVICE <= SSR TASK...............................................................9
3.2 R EMOVE B ATTERY C OVER AND B ATTERY <= SSR TASK...................................................................................12
3.3 I NSTALL NEW B ATTERY AND R E - INSTALL B ATTERY C OVER <= SSR TASK .......................................................13
3.4 V ERIFY B ATTERY I NSTALLATION <= SSR TASK .................................................................................................16

Power775 Time of Day (TOD) Battery Service Procedure
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3SERVICE PROCEDURE
NOTE: 350VDC will remain active on the power cables of the CEC drawer when servicing the battery. If the 350VDC is
powered off to the CEC Drawer while the battery is removed, you will need to re-set the clock after this service procedure.
3.1 Identify CEC Drawer requiring Battery Service <= SSR TASK
STEP 1 Identify with the customer and locate the HMC that manages the frame you will be
performing this procedure on.
STEP 2 In the Navigation menu on the HMC, expand Systems Management then select
Servers
STEP 3 Place a checkmark in the Select column of the CEC Drawer that you want to flash the
Battery Identify LED on.
STEP 4 From the Tasks menu select Operations -> LED Status -> Identify LED. See
Figure 3.
Figure 3 Identify LED Selection

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 5 In the window titled Identify LED, Select Enclosure select System Unit, Model F2C
then click the List FRUs… button. See Figure 4 .
Figure 4 System Unit, Model F2C Selection

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 6 In the window Identify LED, Select Location, place a checkmark in the Select column for the
battery location for the appropriate LED. Figure 5 shows the example of replacing the battery in
U78A9.001.[Serial#]-P1-C147-E1 and then click the Activate LED button. To select for the battery in the lower
DCCA of the CEC Drawer it would be U78A9.001.[Serial#]-P1-C148-E1.
Figure 5 Battery Identify LED Selection in DCCA
STEP 7 Locate and confirm the Frame selected now has a flashing UEPO Switch LED and is
the frame you plan to perform a service action on.

Power775 Time of Day (TOD) Battery Service Procedure
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3.2 Remove Battery Cover and Battery <= SSR TASK
STEP 8 Open the front door of the frame.
STEP 9 Locate the battery to be replaced. This battery will have the amber colored battery ID
LED illuminated which is included in the lower left of the blue battery cover. Be sure to leave the
hoses connected to DCCA as it requires water cooling.
STEP 10 Remove the battery cover by first depressing the tab on the top of blue battery cover as
indicated in Figure 6.
Figure 6 Depressing Blue Battery Cover Tab
STEP 11 While depressing the top tab, pull the top of the blue battery cover towards you while
leaving the bottom tab engaged in the DCCA. Do this in a rocking fashion as seen in Figure 7. The
last step is to pull the bottom of the blue battery cover out of the DCCA.
Figure 7 Removing Blue Battery Cover
STEP 12 Remove the old battery from the DCCA by gripping the top and bottom of the battery
and pulling it straight back towards you as seen in Figure 8.
Figure 8 Battery Removal

Power775 Time of Day (TOD) Battery Service Procedure
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3.3 Install new Battery and Re-install Battery Cover <= SSR TASK
STEP 13 Install the replacement battery into the battery slot by lining it up and pushing it into the
DCCA as seen in Figure 9. Note that the Plus side of the battery faces down. The tabs of the battery
holder will expand slightly as the battery slides into place. Be careful to note the orientation of the
battery; inserting the battery incorrectly will cause mechanical damage to the battery holder.
Figure 9 Battery Replacement
STEP 14 Verify that the new battery is seated tight to the back of the battery receptacle.
STEP 15 Reinstall the blue battery cover.
a) Engage the bottom tab of the blue battery cover into the DCCA.
b) Raise the top right corner of the blue battery cover so it encases the connector housing as seen
in Figure 10.
•Be careful to note the alignment of the left and right sides of the cover such that the
cover is not shifted compared to the opening.
c) Ensure the blue battery cover is lined up correctly by raising the top left corner up, as seen in
Figure 11
d) Engage the top tab of the blue battery cover until it snaps into place as seen in Figure 12.
Figure 10 Replacing Blue Battery Cover

Power775 Time of Day (TOD) Battery Service Procedure
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Figure 11 Replacing Blue Battery Cover Continued
Figure 12 Securing Blue Battery Cover
STEP 16 Verify that the blue cover is on securely by pulling gently on the cover. Note: do not
depress top tab.
STEP 17 When the use of the Battery and UEPO Identify LEDs are complete, turn them off by selecting it
in the list in Identify LED, Select Location and then click the Deactivate LED button.
STEP 18 Click the Cancel buttons to close the Identify LED windows.
STEP 19 Close the front door of the frame.

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 20 Use the procedure “Appendix: Power775 BPC FSP Command Line Procedure” (included
in Section 5 of this document). Verify the accuracy of the Real Time Clock (RTC) and if necessary reset
the RTC by executing the following commands on the BPC FSP Command line.
I. Determine the current Time Of Day (TOD) settings by executing the following command on
the BPC FSP Command line.
rtim timeofday
II. If the TOD needs to be changed, execute the following command on the BPC FSP Command
line.
rtim timeofday yyyyMMddhhmmss
Where:
yyyy: Year (0001 - 9999)
MM: Month (01 - 12)
dd: Day (01 - 31)
hh: Hour (00 - 23)
mm: Minute (00 - 59)
ss: Second (00 - 59)
•Confirm any changes by repeating the rtim timeofday command as necessary
•If time of day settings can not be properly set contact next level of support.
III. Log out of BPC FSP ASM

Power775 Time of Day (TOD) Battery Service Procedure
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3.4 Verify Battery Installation <= SSR TASK
STEP 21 In the Navigation menu on the HMC, expand Systems Management then select
Servers
STEP 22 Place a checkmark in the Select column of the CEC Drawer that requires battery
service.
STEP 23 From the Tasks menu select Serviceability -> Manage Serviceable Events. See
Figure 13.
Figure 13 Manage Serviceable Events

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 24 In the window titled Manage Serviceable Events, make changes to the filtering as
appropriate then click the OK button. See Figure 14.
Figure 14 Filter Serviceable Events

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 25 In the window titled Manage Serviceable Events – Serviceable Event Overview,
select the Problem associated with the required battery replacement. Then click the Selected pulldown
and choose Close Event. See Figure 15.
Figure 15 Serviceable Event Selection

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 26 In the window titled Manage Serviceable Events – Enter Serviceable Event
Comments, fill in details as appropriate, then click the Close Events button. See Figure 16.
Figure 16 Add comments panel
STEP 27 In the window titled Manage Serviceable Events – Close Serviceable Events, click
the Yes button. See Figure 17.
Figure 17 Close Serviceable Event
STEP 28 Click Cancel on the remaining screens until you are back to the main HMC screen,
STEP 29 Execute the battery verification test on the CEC FSP Command line:
registry -Hw rtim/BatteryAlertTime 0x00000000

Power775 Time of Day (TOD) Battery Service Procedure
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STEP 30 Check the HMC for any new battery Serviceable Events.
•If no new battery Serviceable Events show up on this DCCA within 3 minutes of
executing STEP 29, then the procedure is complete.
•If a new battery Serviceable Events is created within 3 minutes of executing STEP
29, then the procedure failed and you must have not successfully completed the
procedure. Complete the service procedure again until this step shows no new
battery Serviceable Events in this DCCA.
•If you continue to have a serviceable event on this DCCA, contact next level of
support.
4 END OF POWER775 TIME OF DAY (TOD) BATTERY
SERVICE PROCEDURE