10. Remove the screws that attach the backplane insulator to the backplane, and remove the insulator.
11. Remove the three small Torx screws and two small slotted screws from the upper middle edge of the
backplane assembly, that connect the backplane to the power bus bar assembly.
12. Remove the backplane assembly.
13. Choose from the following options:
v If you do not need to remove or replace the power bus bar assembly, continue with the next step.
v If you are here to remove or replace the power bus bar assembly:
a. Remove the two mounting screws near the power supply connectors in the right rear of the
system. See Figure 3. in Final assembly — Model 825.
b. Replace the power bus bar assembly. Then, continue with the next step.
14.
Install the new part by reversing the procedure.
Attention: Because the new CB1 does not come with an MB2 card, you will need to transfer it from
the original one. See Model 825 - HSL card - MB1 and MB2 for details.
15. Connect the power cord to the box and connect it to the AC.
16. Set the configuration ID:
a. Select function 07 on the system control panel, and press Enter. (07** will be displayed).
b. Use the arrow keys to increment/decrement to sub-function A9, and press Enter (07A9 00 will be
displayed).
48 Hardware (Remove and Replace; Part Locations and Listings)
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