IBM FlashSystem 900, Service Manual

Page: 492 / 546

FRU Exchange
Exchange the Power Distribution DCDP
Important
Check that the 'Power Control' display is
set to local (3) on the control panel.
If not, do the following:
¹
Press the 'Power Control' key until (3) is
displayed in the power control window.
¹
Press the 'Validate' key.
If the state of the machine does not allow you
to display or to change the 'Power control'
mode, continue with the following procedure.
1. If the machine has its:
¹
Ready LED ON, go to step 2.
¹
Otherwise, go to step 4.
.
2. Press the 'Standby' key.
3. When the machine is in standby mode with its
Standby LED ON, go to the next step.
4. Switch OFF the main circuit breaker CB1
.1/
of the ACPW and, if installed, of the second
ACPW/DCPW.
5. Locate the DCDP using Figure 4-9 on
page 4-8.
6. At the rear of the machine, loosen the screws
which secure the transformer cover plates.
7. Remove the transformer cover plates.
8. Unplug all the cables present from the DCDP
connectors labeled (J8, J9, J10, J11, J12).
9. At the front of the machine, unplug all the
cables present from the DCDP connectors
labeled (3745, J1, J2, J3, J4, J5, J6, J7).
10. Disconnect the two ground straps located on
the left side from the DCDP.
11. Remove the two screws holding the
DCDP.
.4/
12. Pull the DCDP out of the machine.
13. Return to the step in the MAP you were per-
forming.
To install the new DCDP:
1. Perform this procedure (steps 10 to 5) in the
reverse order.
2. Return to the step in the MAP you were per-
forming.
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3746-900: Service Guide