IBM 270, Руководство по обслуживанию

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book, and lift place assembly tool, PN 11P4369.
v All components must be removed from the system unit backplane to reduce its weight to a minimum.
– DCA books and DCA blanks
– Capacitor books
– Network interface controller (NIC) card
– Memory books and memory blanks
– Processor MSA (air mover) assembly
– MCM modules (processor) and pass-through modules (remove the MCMs only if the chassis is to be
replaced)
– L3 modules (remove the L3 modules only if the chassis is to be replaced)
– System clock card
v The lift tool wheels must be chocked to prevent it from moving during the operation. The frame must not
be on its casters, the leveling pads must be engaged to prevent the frame from moving during the
operation.
1. Unpack the lift tool and follow assembly instructions included with the tool. Also, refer to the Rack Lift
Tool Operation and Maintenance
book. Inspect the tool for damage (do not perform the remove procedure with a damaged lift tool).
Read all safety instructions before performing this operation. Replace the blue lift plate with the
orange lift plate. (PN 11P4369). Orient two round holes in lift plate to the side of the lift tool that will
be closest to the frame.
2. Power off the system. See Power on/off the system and logical partitions.
3. Open the rack doors and remove them from the rack.
4. Verify that all cables are labeled. If not, then label all cables and components along with their location
at the front and rear of the system.
5. Unplug all power cables from the line power source.
Attention: Because this procedure is performed with power removed from the system, references to
using the white or green service buttons on the UEPO switch do not apply during the remainder of
this procedure.
6. Unplug any cables attached to the Network interface controller (NIC) card and DCAs.
7. At the back of the system, remove the safety bars from the Network interface controller (NIC) card,
using an allen wrench on the captive screws.
8. Remove the Network interface controller (NIC) card or cards. See Models 870 and 890 - Network
interface controller (NIC) card.
9. Remove the DCAs and capacitor books (and blanks if applicable). See “Models 870 and 890 - DC
converter assembly (DCA)” on page 98, and Models 870 and 890 - Capacitor books and blanks.
10. At the front of the system, remove the safety bars from the memory books and blanks.
11. Remove the memory books (and blanks if applicable). See Models 870 and 890 - Memory books and
memory blanks.
12. Remove all the MSA assemblies. See Models 870 and 890 - Processor MSA (air mover) assembly.
13. Remove the MSA enclosure. See Models 870 and 890 - MSA (air mover) enclosure.
14. Remove the MCM modules. See Models 870 and 890 - MCM module (processor) and pass-through
modules.
15. Remove the L3 modules. See Models 870 and 890 - L3 modules.
16. Remove the clock card. See Models 870 and 890 - System clock card.
17. Remove two frame extender mounting bolts from EIA position 17 (10mm bolt).
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Hardware (Remove and Replace; Part Locations and Listings)