IBM iSeries 270 Service Manual page 75

d. Press Enter on the console. After the delay time, the light above the device location will begin
flashing. You now have nine 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 out part way. 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.
Figure 1. Disk unit removal, Models 830/SB2 and 840/SB3 (concurrent)
Wait another five seconds to allow time for the disk to stop spinning. Then pull the disk unit out the
rest of the way.
2. 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.
3. 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.
b. Select Start a Service Tool —> Hardware Service Manager.
c. Select Device Concurrent Maintenance and enter the required information in the information
fields. Do not press the Enter key at this time.
d. Slide the unit in half-way. Ensure that the device does not contact the backplane at this time.
e. Press Enter on the console. After the delay time, the light above the device location will begin
flashing. You now have nine seconds to insert the disk unit. Put the disk unit part way into the
desired slot and rotate the handle of the disk unit towards you. Then push the disk unit completely
Analyze hardware problems
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