c. Select Device Concurrent Maintenance and enter the required information in the information
fields. Do not press Enter at this time.
d. Slide the unit half-way in.
Attention: 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 9 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
into the slot and rotate the handle towards the disk unit to latch it into the slot. The light above the
device location will go off and remain off for a few seconds when the device contacts the
backplane. Then it should go on and remain on.
Attention:
If you install the device when the light is not flashing, data may be lost, the disk unit
may be damaged, or the backplane may be damaged.
f. Replace the covers that were removed during this procedure and return to the procedure that sent
you here.
This
ends the procedure.
Model 825 - Disk unit (dedicated)
For use by authorized service providers.
Use this procedure to remove or replace the disk unit using dedicated maintenance in the Model 825.
Attention: The disk unit is sensitive to electrostatic discharge. See Work with electrostatic
discharge-sensitive parts.
To remove or replace disk units (dedicated):
1. Determine if the system has logical partitions. Go to Determine if the system has logical partitions
before continuing with this procedure.
2. Were you directed here from Recovery procedures?
v Yes: Continue with the next step.
v No: Go to “Recovery procedures” on page 539.
3.
To remove a disk unit using dedicated maintenance perform the following:
a. Power off the system. See Power on/off the system and logical partitions.
b. Disconnect the power cord.
c. To remove the disk unit, pinch the two surfaces of the latching mechanism together and pull the
handle towards you to release the disk unit from the slot.
d. Remove the unit.
Analyze hardware problems 37
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