Part Type: Lower Scan Drive Board, SU Board 
Part number: FPF31R-SDR0034
Manufacturer Part Number: Hitachi FPF31R-SDR0034
Board Number(s): ND60200-0034
Substitute Part Number(s): 
Works for the following Model(s): 

Hitachi 55HDT79
Hitachi 55HDX62
Hitachi 55HDS52
Hitachi 55HDT52
Hitachi 55HDS69