IBM 270, Руководство по обслуживанию

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Models 270, 800, and 810 - Disk unit (dedicated)
For use by authorized service providers.
Use this procedure to remove or replace a disk unit using dedicated maintenance on the Models 270, 800,
and 810.
The Models 270, 800, and 810 may be housed in a FC 0551 frame. The upper and lower system units are
placed on rails in the frame. If you are working on the upper or lower unit, follow these instructions and
access the internal parts by opening the front cover and sliding the system unit out on its rails.
Attention: The disk unit is sensitive to electrostatic discharge. See Work with electrostatic
discharge-sensitive parts.
To remove or replace the disk unit using dedicated maintenance:
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.
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. On Models 270, 800, and 810 with a system unit expansion attached,
disconnect both the system line cord and the expansion unit line 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.
Figure 1. Removing a disk unit - dedicated
4. Are you finished with the repair?
Analyze hardware problems
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