IBM SCM User manual

Power Systems
SCM
IBM

Power Systems
SCM
IBM

ii Power Systems: SCM

Remove SCM
To remove a SCM, complete the following steps:
1. When the node being serviced is above EIA location 29U, the ladders must be used while
installing or removing the rear and front FRUs and cables.
2. Perform the following procedure on ONLY THE FRU(s) BEING SERVICED. The following images
are generic and do not represent the literal location being serviced.
3. Modifying FRU locations which are not called out for service can have adverse effects on the
system, INCLUDING SYSTEM OUTAGE AND LOSS OF DATA.
4. The torque tool (P/N 41V1059) is required for this procedure. The torque tool was initially shipped
with the system.
5. CAUTION: If the system slide rails are installed above EIA location 29U, two Support Services
Representatives (SSRs) must perform the procedure together and the following equipment must be
used as a safety precaution for servicing: ServerLIFT tool (P/N 74Y4399), two Hard hats (P/N
5442867) and two service-qualified ladders (P/N 46G5947 and P/N 00E4866)
1. Remove front bezel
a. Remove the front bezel (A) from the system node being serviced and all system nodes which
share the same system control unit with the system node being serviced.
A
b. If present, remove the retention screws (A) from the front of the system node.
© Copyright IBM Corp. 2014 1

2. Unplug all power supply cables
Note: The following step applies to the system node being serviced and all system nodes which
share the same system control unit with the system node being serviced.
a. Locate the system control unit for the system being serviced.
b. Validate which system nodes are connected to the system control unit by visually tracing /
checking the clock cables.
c. Disconnect the power supply cables from each power supply of each affected system node.
3. Remove all power supply units
a. Push tab (A) down of the power supply being serviced and pull it towards the direction of the
arrow shown. Keep pulling until the power supply unit slides out from the slot.
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A
4. If an S-Biner power cable routing clip is present: While keeping the power cable correctly routed
through the S-Biner, unclip all S-Biners from the node being serviced.
5. Unplug line cords
a. Unplug the line cords from only the system node being serviced.
Remove SCM 3

6. Move cable management arm up
a. Pull out the retention pins (B) and rotate the cable management arm up on the pivot point (A)
from position (2) to position (1).. The pins will automatically retract into the locking position
when the arm is properly located in the up position.
A
B
1
2
7. Remove all PCI cables
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a. Make note of the location from which each PCI cable is removed. They must be plugged into the
same location when reinstalled.
b. Label and unplug the PCI cables from the system node being serviced.
8. Remove all SMP cables
a. Make note of the location from which SMP cable is removed. They must be plugged into the
same location when reinstalled.
b. Use the torque tool (41V1059) and turn in the direction indicated to unlock. There is a stop to
prevent over rotation. Visually confirm that the SMP cable camming mechanism is in the
unlocked position and that the black dots are showing through the two holes at the 5 and 11
o'clock positions before pulling on the cable.
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c. Label the SMP cables so they may be plugged back into the same slots.
d. Grip the pull tab and pull in the direction indicated to remove the SMP cables.
9. Remove all clock card cables
a. Make note of the location from which each clock card cable is removed. They must be plugged
into the same location when reinstalled.
6Power Systems: SCM