Toshiba MMD-UP0721HFP-UL Service Manual page 28

Fan IPDU board (MCC-1610)
Power supply
CN500 (white)
Reactor connection
CN511
Reactor connection
CN510
UART (communication between CDB boards (MCC-1643))
CN504 (blue)
I/O board (communication between (TCB-PCUC2))
CN505 (red)
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Power relay output
CN602 (black)
DC fan output U phase
CN705 (red)
DC fan output V phase
CN704 (white)
DC fan output W phase
CN703 (black)