Service manual

990-1008, Revision 1, 4/99 28
7.8 Removing the Controller Board
1. Switch off the Smart-UPS DP (7.1).
2. Remove the cover (7.2).
3. Remove the external DC-Supply (7.3).
4. Open the Smart-UPS DP (7.4).
5. Remove the internal DC-supply (7.5).
6. Remove the external unit’s cables (7.6).
7. Remove the SmartSlot (7.7)
8. Remove the 2 (4) screws that connect the CU-board to the PU-board(s).
9. Remove the LED-display ribbon cable.
10. Remove the options ribbon cable.
11. Remove the grounding wire from the chassis.