MKS 651D Series, User Manual, Page: 137 / 162

Chapter Seven: Maintenance and Troubleshooting Maintenance
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14. Pull the front panel module completely forward and remove the battery circuit board
assembly.
15. Disconnect the two insulated clips from the battery terminals.
Caution
Do not allow anything to short across the battery terminals, such as
a screwdriver.
16. Push the battery straight up (from underneath) and out.
17. Be sure that the new battery is positioned such that the terminals are at the rear and (+)
is on the right-hand side.
18. Reconnect the two insulated clips.
Be sure that (+) is connected to (+) and (-) is connected to (-).
19. Feed the ribbon cable through the slot.
Be sure to keep the cable away from the heatsink.
20. Replace the two screws that attach the circuit assembly to its chassis and the screw
removed from the left side of the housing.
21. Position the front panel module and battery backup housing so that the ribbon cable
connector can be plugged into the card cage.
22. Plug the bus connector into the circuit board located in the battery backup housing.
23. Slide the battery backup housing into position and snap it into place.
24. Replace the two screws on each side of the battery backup housing.
25. Push the front panel module slightly back and fold the ribbon cable.
26. Slide the front panel module into the battery backup housing and snap into place.
27. Replace the two screws on both sides of the front panel module.
28. Replace the top cover and its four screws.