Models 870 And 890 - Processor Msa (Air Mover) Assembly; Models 870 And 890 - Supporting Information - IBM iSeries 270 Service Manual

1. Inspect the new NIC card for damage. See "Inspect the Network interface controller (NIC) card" on
page 113 above.
2. Unlatch the handles on the replacement card.
3. Take care not to hit the connector against the cage, which can cause damage to the NIC card
connectors.
4. Slide the card in until it reaches the alignment pins.
5. Using even pressure, actuate both handles simultaneously until the card is fully seated.
6. Reconnect all cables to their original locations.
7. At the back of the system, replace the safety bars on the NIC card.
8. Repeat this procedure for all replacement NIC cards.
This ends the procedure.

Models 870 and 890 - Processor MSA (air mover) assembly

For use by authorized service providers.
Use this procedure to remove or replace the Processor motor scrolling assembly (MSA) on the Models
870 and 890.
To remove the Processor MSA:
1. Do not power down the system if it is powered on; this procedure can be performed concurrently.
2. Open the cover to access the field replaceable unit (FRU). See Models 870 and 890 - Covers.
3. Find the location of the MSA to be replaced in Locations - Models 870 and 890.
4. Note the state of the motor drive assembly's (MDA's) LEDs. Then, press the (green) Start Service
button on the UEPO panel.
5. Proceed only if the MDA LED is off, or the repair has been scheduled (System outage - EPO off).
6. Verify that all the cables are labeled for plug location, and then unplug the cables from the MDA on the
MSA to be removed.
7. If the FRU call listed both the MSA and MDA for removal, it is synonymous with removing the air
moving device (AMD). In that case, ignore this step and continue with the next step. Otherwise,
remove the MDA from the face of the MSA. See Models 870 and 890 - MDA (air mover) controller.
8. Loosen the upper and lower thumb screws on the MSA, and slide the MSA from the enclosure
opening. The upper and lower spring loaded internal doors will close automatically when the MSA is
removed, preventing loss of air flow while the MSA is out of the enclosure.
Note: The MSA contains a 10.5 inch diameter blower, and weighs approximately 5 Kg (eleven
pounds).
To replace the Processor MSA:
1. Position the MSA in front of the opening through the spring loaded doors in the air moving enclosure.
2. Slide the MSA into the enclosure opening, and tighten the upper and lower thumb screws.
3. Replace the MDA onto the face of the MSA. See Models 870 and 890 - MDA (air mover) controller.
4. To indicate completion of these steps, press the (white) Service Complete button on the UEPO panel.
This ends the procedure.

Models 870 and 890 - Supporting information

For use by authorized service providers.
Use these pages to assist you when performing remove and replace procedures on the Models 870 and
890.
Models 870 and 890 - Install the MCM/L3/passthrough tri-fold plug map
114
Hardware (Remove and Replace; Part Locations and Listings)