IBM iSeries 270 Service Manual page 34

v Yes: After you have determined the location of the disk unit to replace, remove the front covers for
access. (See "Model 820 - Covers" on page 21.) Continue with the next step.
3. Remove the EMC access plate that is over the location of the disk unit that you are removing. For
location information, see "Locations and addresses" on page 224.
4. To remove a disk unit using concurrent maintenance perform the following:
a. Select System Service Tools (SST). If you cannot get to SST, select DST.
Do not perform a system IPL to get to DST.
b. Select Start a Service Tool—>Hardware Service Manager.
c. Select Device Concurrent Maintenance and enter the required information in the information
fields.
d. Press Enter on the console. After the delay time, the light above the device location will begin
flashing. You now have 9 seconds to pinch the two surfaces of the latching mechanism together
and rotate the handle of the disk unit towards you. Pull the disk unit partially out of the tower. The
light above the device location will go off and remain off as soon as the device is no longer making
contact with the backplane.
Attention: If you remove the device when the light is not flashing, data may be lost, the disk unit
may be damaged, or the backplane may be damaged.
e. Wait another 5 seconds to allow time for the disk to stop spinning. Then pull the disk unit the
remaining way out of the tower.
5. Are you finished with the repair?
v No: Continue with the next step.
v Yes: Replace the covers that were removed during this procedure and return to the procedure that
sent you here.
This ends the procedure.
6. To install a disk unit using concurrent maintenance perform the following:
a. Select System Service Tools (SST). If you cannot get to SST, select DST.
Do not perform a system IPL to get to DST.
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Hardware (Remove and Replace; Part Locations and Listings)