Replacement
Notes:
1. If you are replacing this assembly with a new assembly, the manufacturing label with the machine type,
model number, and the serial number for the subsystem must be ordered to apply to the new part. For
information on replacement labels, see Chapter 10, “Parts Information”, on page 941.
2. Before beginning the replacement procedure, install rails in the frame if they are not already installed.
1. Position the lift tool such that the new I/O subsystem chassis can be moved onto the lift plate.
2. Install the wheel chocks and engage the brake.
3. Move the new I/O subsystem chassis onto the tool with its rear (PCI adapter end) flush with the lift
plate.
4. Position the lift tool as close as possible to the front of the rack. Install wheel chocks on the lift tool
casters. Engage the lift tool brake.
5. Raise the plate to a height such that the lift plate is just above the rails onto which the I/O subsystem
chassis will be installed. Release pins on the extender arms and position them on both left and right
side. Arms must fit around the frame extenders and lock in place (do not adjust the lift tool after these
arms are locked in place).
6. One person should gently push the I/O subsystem chassis toward the frame from the front of the
system. Adjust the height of the lift plate, as needed. After the I/O subsystem is installed in the frame,
retract the extender arms.
7. Lower the lift plate and remove it from the lift tool. Repackage the lift tool.
8. Align the I/O subsystem chassis, then secure it to the rack with retaining screws.
9. Replace the I/O backplanes (up to 2) as described in the replacement section of “I/O Subsystem I/O
Backplane Assembly” on page 927.
10. Replace all PCI adapter cassettes or fillers as described in “PCI Adapters” on page 851.
11. Replace all I/O subsystem fan assemblies as described in the replacement section of “I/O Subsystem
Fan” on page 932.
12. Replace all DCA units as described in the replacement section of “I/O Subsystem Distributed
Converter Assembly (DCA)” on page 925.
13. Replace all DASD 4-pack or 4-pack filler assemblies as described in the replacement section of “I/O
Subsystem DASD 4-Pack” on page 931.
14. Replace all DASD hard disk drives or DASD fillers as described in the replacement section of “I/O
Subsystem DASD Hard Disk Drive Assembly” on page 929.
15. Reconnect all cables to the front and rear of your system.
16. If your system is configured with a half I/O drawer filler plate, remove the filler plate.
17. Remove the I/O subsystem front cover.
Chapter 9. Removal and Replacement Procedures
935
Summary of Contents for pSeries 670
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Page 973: ...Power and SCSI Cables to the Media Subsystem 1 2 3 5 4 6 Chapter 10 Parts Information 953...
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