IBM FlashSystem 900, Service Manual

Page: 488 / 546

FRU Exchange
Exchange a CSCE
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 CSCE using Figure 4-9 on
page 4-8.
6. Remove the internal cover (2 screws) to have
access to the CSCE.
.1/
7. WARNING: Use the ESD kit and proce-
dures.
8. Unfasten the top and bottom screws holding
the CSCE cassette in the enclosure, but do
not pull the CSCE cassette out of the enclo-
sure.
9. Remove the two internal covers
.2/
to have
access to the CS.
10. Unplug the processor cables coming from the
CSCE cassette from the CS.
.3/
11. Pull the CSCE out of the enclosure.
12. To install the new CSCE cassette , perform
this procedure in reverse order.
13. Switch the main circuit breaker(s) CB1 ON.
14. Return to the step in the MAP you were per-
forming.
Figure 4-19. 3746-900 CSCE Cable Connection to the Connectivity Switch (CS)
4-22
3746-900: Service Guide