User`s guide

PSB No: S-0060A
Page: 7 of 8
*** HARDWARE UPDATES ***
EQUITY I MRS - BD (Main Board)
Initial Release
P/N Y144201000 00 (With VFO SUB BOARD)
P/N Y144201000 01 (VFO SUB BOARD eliminated)
VFO/MRS - SUB BOARD
Initial Release - Version CAA (wouldn’t work with a hard disk)
VFO upgraded to Version CAC (Required for HDD operation)
Units beginning with the following serial numbers have the CAC version VFO.
Model
Serial Number
Q501A-AA (1 FDD)
018670
Q501A-AB (2 FDD) 022722
Q501A-AE (2 FDD)
024510