92 Upgrade and Maintenance Manual BX900 S2
Power supply
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Configuration with six power supply units or five power supply units and
one fan module.
I Zones 1, 2 and 3 must always be fitted with a PSU. Zones 4, 5 and 6 can
be fitted with either PSUs or fan modules.
Zone 5 Zone 3 Zone 1 Zone 1 Zone 3 Zone 5
PSU 1 PSU 2 PSU 3 1 2 3 4 17 5 6 7 8
PSU 4 PSU 5 PSU 6 9 10 11 12 18 13 14 15 16
Zone 6 Zone 4 Zone 2 Zone 2 Zone 4 Zone 6